Commit graph android_kernel_motorola_sm6375/kernel/exit.c
Author SHA1 Message Date
Blagovest Kolenichev
c8f071d27c Merge android-5.4-stable.50 (a200ad5) into msm-5.4
* refs/heads/tmp-a200ad5:
  Revert "usb: dwc3: gadget: Properly handle ClearFeature(halt)"
  Revert "ANDROID: kbuild: merge more sections with LTO"
  Revert "FROMLIST: f2fs: fix use-after-free when accessing bio->bi_crypt_context"
  Linux 5.4.50
  Revert "tty: hvc: Fix data abort due to race in hvc_open"
  xfs: add agf freeblocks verify in xfs_agf_verify
  dm writecache: add cond_resched to loop in persistent_memory_claim()
  dm writecache: correct uncommitted_block when discarding uncommitted entry
  xprtrdma: Fix handling of RDMA_ERROR replies
  NFSv4 fix CLOSE not waiting for direct IO compeletion
  pNFS/flexfiles: Fix list corruption if the mirror count changes
  SUNRPC: Properly set the @subbuf parameter of xdr_buf_subsegment()
  sunrpc: fixed rollback in rpc_gssd_dummy_populate()
  Staging: rtl8723bs: prevent buffer overflow in update_sta_support_rate()
  drm/amdgpu: add fw release for sdma v5_0
  drm/radeon: fix fb_div check in ni_init_smc_spll_table()
  drm: rcar-du: Fix build error
  drm/amd: fix potential memleak in err branch
  ring-buffer: Zero out time extend if it is nested and not absolute
  tracing: Fix event trigger to accept redundant spaces
  arm64: dts: imx8mn-ddr4-evk: correct ldo1/ldo2 voltage range
  arm64: dts: imx8mm-evk: correct ldo1/ldo2 voltage range
  arm64: perf: Report the PC value in REGS_ABI_32 mode
  mm/memcontrol.c: add missed css_put()
  ocfs2: fix panic on nfs server over ocfs2
  ocfs2: fix value of OCFS2_INVALID_SLOT
  ocfs2: load global_inode_alloc
  ocfs2: avoid inode removal while nfsd is accessing it
  mm/slab: use memzero_explicit() in kzfree()
  btrfs: fix failure of RWF_NOWAIT write into prealloc extent beyond eof
  btrfs: check if a log root exists before locking the log_mutex on unlink
  btrfs: fix data block group relocation failure due to concurrent scrub
  btrfs: fix bytes_may_use underflow when running balance and scrub in parallel
  x86/asm/64: Align start of __clear_user() loop to 16-bytes
  x86/cpu: Use pinning mask for CR4 bits needing to be 0
  KVM: VMX: Stop context switching MSR_IA32_UMWAIT_CONTROL
  KVM: nVMX: Plumb L2 GPA through to PML emulation
  KVM: X86: Fix MSR range of APIC registers in X2APIC mode
  erofs: fix partially uninitialized misuse in z_erofs_onlinepage_fixup
  ACPI: configfs: Disallow loading ACPI tables when locked down
  ACPI: sysfs: Fix pm_profile_attr type
  ALSA: hda/realtek: Add mute LED and micmute LED support for HP systems
  ALSA: hda/realtek - Add quirk for MSI GE63 laptop
  ALSA: hda: Add NVIDIA codec IDs 9a & 9d through a0 to patch table
  RISC-V: Don't allow write+exec only page mapping request in mmap
  block: update hctx map when use multiple maps
  blktrace: break out of blktrace setup on concurrent calls
  kprobes: Suppress the suspicious RCU warning on kprobes
  recordmcount: support >64k sections
  kbuild: improve cc-option to clean up all temporary files
  arm64: sve: Fix build failure when ARM64_SVE=y and SYSCTL=n
  s390/vdso: fix vDSO clock_getres()
  s390/vdso: Use $(LD) instead of $(CC) to link vDSO
  s390/ptrace: fix setting syscall number
  s390/ptrace: pass invalid syscall numbers to tracing
  pinctrl: tegra: Use noirq suspend/resume callbacks
  pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
  test_objagg: Fix potential memory leak in error handling
  net: alx: fix race condition in alx_remove
  ibmvnic: Harden device login requests
  hwrng: ks-sa - Fix runtime PM imbalance on error
  riscv/atomic: Fix sign extension for RV64I
  drm/amd/display: Use kfree() to free rgb_user in calculate_user_regamma_ramp()
  ata/libata: Fix usage of page address by page_address in ata_scsi_mode_select_xlat function
  sata_rcar: handle pm_runtime_get_sync failure cases
  sched/core: Fix PI boosting between RT and DEADLINE tasks
  sched/deadline: Initialize ->dl_boosted
  afs: Fix storage of cell names
  i2c: core: check returned size of emulated smbus block read
  i2c: fsi: Fix the port number field in status register
  clk: sifive: allocate sufficient memory for struct __prci_data
  net: bcmgenet: use hardware padding of runt frames
  netfilter: ipset: fix unaligned atomic access
  nvme: don't protect ns mutation with ns->head->lock
  usb: renesas_usbhs: getting residue from callback_result
  usb: gadget: udc: Potential Oops in error handling code
  scsi: lpfc: Avoid another null dereference in lpfc_sli4_hba_unset()
  ARM: imx5: add missing put_device() call in imx_suspend_alloc_ocram()
  cxgb4: move handling L2T ARP failures to caller
  net: qede: fix use-after-free on recovery and AER handling
  net: qede: fix PTP initialization on recovery
  net: qed: fix excessive QM ILT lines consumption
  net: qed: fix NVMe login fails over VFs
  net: qede: stop adding events on an already destroyed workqueue
  net: qed: fix async event callbacks unregistering
  net: qed: fix left elements count calculation
  iommu/vt-d: Update scalable mode paging structure coherency
  iommu/vt-d: Enable PCI ACS for platform opt in hint
  selftests/net: report etf errors correctly
  RDMA/mad: Fix possible memory leak in ib_mad_post_receive_mads()
  s390/qeth: fix error handling for isolation mode cmds
  ASoC: rockchip: Fix a reference count leak.
  RDMA/cma: Protect bind_list and listen_list while finding matching cm id
  RDMA/qedr: Fix KASAN: use-after-free in ucma_event_handler+0x532
  RDMA/rvt: Fix potential memory leak caused by rvt_alloc_rq
  rxrpc: Fix handling of rwind from an ACK packet
  ARM: dts: NSP: Correct FA2 mailbox node
  bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE
  devmap: Use bpf_map_area_alloc() for allocating hash buckets
  regmap: Fix memory leak from regmap_register_patch
  x86/resctrl: Fix a NULL vs IS_ERR() static checker warning in rdt_cdp_peer_get()
  ARM: dts: Fix duovero smsc interrupt for suspend
  ARM: dts: am335x-pocketbeagle: Fix mmc0 Write Protect
  bpf, xdp, samples: Fix null pointer dereference in *_user code
  samples/bpf: xdp_redirect_cpu: Set MAX_CPUS according to NR_CPUS
  ASoC: fsl_ssi: Fix bclk calculation for mono channel
  RDMA/siw: Fix pointer-to-int-cast warning in siw_rx_pbl()
  regualtor: pfuze100: correct sw1a/sw2 on pfuze3000
  ASoC: qcom: common: set correct directions for dailinks
  ASoc: q6afe: add support to get port direction
  efi/esrt: Fix reference count leak in esre_create_sysfs_entry.
  efi/tpm: Verify event log header before parsing
  ASoC: q6asm: handle EOS correctly
  xfrm: Fix double ESP trailer insertion in IPsec crypto offload.
  ARM: OMAP2+: Fix legacy mode dss_reset
  bus: ti-sysc: Ignore clockactivity unless specified as a quirk
  bus: ti-sysc: Flush posted write on enable and disable
  IB/hfi1: Fix module use count flaw due to leftover module put calls
  IB/mad: Fix use after free when destroying MAD agent
  loop: replace kill_bdev with invalidate_bdev
  cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip
  xhci: Return if xHCI doesn't support LPM
  xhci: Fix enumeration issue when setting max packet size for FS devices.
  xhci: Fix incorrect EP_STATE_MASK
  cifs/smb3: Fix data inconsistent when zero file range
  cifs/smb3: Fix data inconsistent when punch hole
  cifs: Fix cached_fid refcnt leak in open_shroot
  scsi: zfcp: Fix panic on ERP timeout for previously dismissed ERP action
  scsi: qla2xxx: Keep initiator ports after RSCN
  usb: cdns3: ep0: add spinlock for cdns3_check_new_setup
  usb: cdns3: ep0: fix the test mode set incorrectly
  usb: cdns3: trace: using correct dir value
  ALSA: usb-audio: Fix OOB access of mixer element list
  ALSA: usb-audio: add quirk for Samsung USBC Headset (AKG)
  ALSA: usb-audio: add quirk for Denon DCD-1500RE
  ALSA: usb-audio: Add implicit feedback quirk for SSL2+.
  usb: typec: tcpci_rt1711h: avoid screaming irq causing boot hangs
  usb: host: ehci-exynos: Fix error check in exynos_ehci_probe()
  xhci: Poll for U0 after disabling USB2 LPM
  usb: host: xhci-mtk: avoid runtime suspend when removing hcd
  USB: ehci: reopen solution for Synopsys HC bug
  usb: add USB_QUIRK_DELAY_INIT for Logitech C922
  usb: dwc2: Postponed gadget registration to the udc class driver
  USB: ohci-sm501: Add missed iounmap() in remove
  binder: fix null deref of proc->context
  ALSA: usb-audio: Fix potential use-after-free of streams
  fix a braino in "sparc32: fix register window handling in genregs32_[gs]et()"
  net: sched: export __netdev_watchdog_up()
  btrfs: fix a block group ref counter leak after failure to remove block group
  Revert "i2c: tegra: Fix suspending in active runtime PM state"
  tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
  sch_cake: fix a few style nits
  sch_cake: don't call diffserv parsing code when it is not needed
  sch_cake: don't try to reallocate or unshare skb unconditionally
  ip_tunnel: fix use-after-free in ip_tunnel_lookup()
  net: phy: Check harder for errors in get_phy_id()
  ip6_gre: fix use-after-free in ip6gre_tunnel_lookup()
  tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes
  tcp: grow window for OOO packets only for SACK flows
  tcp: don't ignore ECN CWR on pure ACK
  sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket
  rxrpc: Fix notification call on completion of discarded calls
  rocker: fix incorrect error handling in dma_rings_init
  openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt_len
  net: usb: ax88179_178a: fix packet alignment padding
  net: increment xmit_recursion level in dev_direct_xmit()
  net: Fix the arp error in some cases
  net: fix memleak in register_netdevice()
  net: Do not clear the sock TX queue in sk_set_socket()
  net: core: reduce recursion limit value
  net: bridge: enfore alignment for ethernet address
  mvpp2: ethtool rxtx stats fix
  mld: fix memory leak in ipv6_mc_destroy_dev()
  ibmveth: Fix max MTU limit
  geneve: allow changing DF behavior after creation
  enetc: Fix tx rings bitmap iteration range, irq handling
  block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
  ANDROID: GKI: revert part of the ufshcd_* export removals
  ANDROID: GKI: update ABI definitions based on recent wifi backports
  BACKPORT: cfg80211: Configure PMK lifetime and reauth threshold for PMKSA entries
  BACKPORT: nl80211: add no pre-auth attribute and ext. feature flag for ctrl. port
  BACKPORT: nl80211: modify TID-config API
  BACKPORT: nl80211: Add NL command to support TID speicific configurations
  BACKPORT: cfg80211: Support key configuration for Beacon protection (BIGTK)
  BACKPORT: cfg80211: More error messages for key addition failures
  BACKPORT: cfg80211: Enhance the AKM advertizement to support per interface.
  BACKPORT: nl80211: add handling for BSS color
  BACKPORT: cfg80211: VLAN offload support for set_key and set_sta_vlan
  Revert "ANDROID: fscrypt: add key removal notifier chain"
  UPSTREAM: scsi: ufs: Fix imprecise load calculation in devfreq window
  UPSTREAM: scsi: ufs: Add trace event for UIC commands
  UPSTREAM: scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices
  UPSTREAM: scsi: ufs-mediatek: Allow unbound mphy
  UPSTREAM: scsi: ufs-mediatek: Fix unbalanced clock on/off
  UPSTREAM: scsi: ufs-mediatek: Introduce low-power mode for device power supply
  UPSTREAM: scsi: ufs-mediatek: Do not gate clocks if auto-hibern8 is not entered yet
  UPSTREAM: scsi: ufs-mediatek: Fix imprecise waiting time for ref-clk control
  BACKPORT: scsi: ufs: Disable WriteBooster capability in non-supported UFS device
  BACKPORT: scsi: ufs: Fix WriteBooster flush during runtime suspend
  BACKPORT: scsi: ufs: Fix index of attributes query for WriteBooster feature
  BACKPORT: scsi: ufs: Allow WriteBooster on UFS 2.2 devices
  UPSTREAM: scsi: ufs-mediatek: Customize WriteBooster flush policy
  UPSTREAM: scsi: ufs: Customize flush threshold for WriteBooster
  BACKPORT: scsi: ufs: Introduce ufs_hba_variant_params to group customizable parameters
  UPSTREAM: scsi: ufs-mediatek: Make ufs_mtk_fixup_dev_quirks static
  UPSTREAM: scsi: ufs: Cleanup WriteBooster feature
  UPSTREAM: scsi: ufs-mediatek: Enable WriteBooster capability
  BACKPORT: scsi: ufs: Add LU Dedicated buffer mode support for WriteBooster
  BACKPORT: scsi: ufs: Add "index" in parameter list of ufshcd_query_flag()
  UPSTREAM: scsi: ufs-mediatek: Add fixup_dev_quirks vops
  UPSTREAM: scsi: ufs: Export ufs_fixup_device_setup() function
  BACKPORT: scsi: ufs: Introduce fixup_dev_quirks vops
  UPSTREAM: scsi: ufs-mediatek: add error recovery for suspend and resume
  UPSTREAM: scsi: ufs: export ufshcd_link_recovery
  UPSTREAM: scsi: ufs-mediatek: customize the delay for enabling host
  UPSTREAM: scsi: ufs: make HCE polling more compact to improve initialization latency
  BACKPORT: scsi: ufs: allow custom delay prior to host enabling
  UPSTREAM: scsi: ufs-mediatek: use common delay function
  UPSTREAM: scsi: ufs: introduce common and flexible delay function
  UPSTREAM: scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc()
  UPSTREAM: scsi: ufs-mediatek: fix HOST_PA_TACTIVATE quirk for Samsung UFS Devices
  BACKPORT: scsi: ufs: Add max_lu_supported in struct ufs_dev_info
  ANDROID: GKI: remove ufshcd_* exports from whitelists
  ANDROID: GKI: enable CONFIG_SCSI_UFS_DWC_TC_PLATFORM
  ANDROID: GKI: enable QCOM and HISI UFS drivers
  ANDROID: GKI: enable UFS for x86 gki builds and SCSI_UFSHCD_PCI
  UPSTREAM: amba: Retry adding deferred devices at late_initcall
  ANDROID: GKI: Enable INTERVAL_TREE
  FROMGIT: binder: fix null deref of proc->context
  ANDROID: Makefile: append BUILD_NUMBER to version string when defined
  ANDROID: GKI: update the abi definitions due to 5.4.49 and padding
  ANDROID: GKI: USB: Gadget: add Android ABI padding to struct usb_gadget
  ANDROID: GKI: sound/usb/card.h: add Android ABI padding to struct snd_usb_endpoint
  ANDROID: ext4: Optimize match for casefolded encrypted dirs
  ANDROID: ext4: Handle casefolding with encryption
  Linux 5.4.49
  net: core: device_rename: Use rwsem instead of a seqcount
  sched/rt, net: Use CONFIG_PREEMPTION.patch
  pwm: jz4740: Enhance precision in calculation of duty cycle
  net: octeon: mgmt: Repair filling of RX ring
  e1000e: Do not wake up the system via WOL if device wakeup is disabled
  kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
  kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
  tracing/probe: Fix memleak in fetch_op_data operations
  crypto: algboss - don't wait during notifier callback
  crypto: algif_skcipher - Cap recv SG list at ctx->used
  Revert "drm/amd/display: disable dcn20 abm feature for bring up"
  drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
  drm/amd/display: Use kvfree() to free coeff in build_regamma()
  drm/connector: notify userspace on hotplug after register complete
  drm/i915: Whitelist context-local timestamp in the gen9 cmdparser
  drm/i915/gem: Avoid iterating an empty list
  drm/msm: Check for powered down HW in the devfreq callbacks
  drm/i915: Fix AUX power domain toggling across TypeC mode resets
  s390: fix syscall_get_error for compat processes
  f2fs: avoid utf8_strncasecmp() with unstable name
  f2fs: split f2fs_d_compare() from f2fs_match_name()
  net/mlx5: DR, Fix freeing in dr_create_rc_qp()
  block: nr_sects_write(): Disable preemption on seqcount write
  x86/boot/compressed: Relax sed symbol type regex for LLVM ld.lld
  drm/amd/display: Use swap() where appropriate
  drm/dp_mst: Increase ACT retry timeout to 3s
  ext4: avoid race conditions when remounting with options that change dax
  jbd2: clean __jbd2_journal_abort_hard() and __journal_abort_soft()
  selinux: fix double free
  drm/amdgpu: Replace invalid device ID with a valid device ID
  drm/qxl: Use correct notify port address when creating cursor ring
  drm/dp_mst: Reformat drm_dp_check_act_status() a bit
  ext4: avoid utf8_strncasecmp() with unstable name
  ext4: fix partial cluster initialization when splitting extent
  drm: encoder_slave: fix refcouting error for modules
  libata: Use per port sync for detach
  arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
  mvpp2: remove module bugfix
  block: Fix use-after-free in blkdev_get()
  scsi: ufs-bsg: Fix runtime PM imbalance on error
  bnxt_en: Return from timer if interface is not in open state.
  afs: Fix the mapping of the UAEOVERFLOW abort code
  afs: Set error flag rather than return error from file status decode
  afs: Always include dir in bulk status fetch from afs_do_lookup()
  afs: Fix EOF corruption
  afs: afs_write_end() should change i_size under the right lock
  afs: Fix non-setting of mtime when writing into mmap
  powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
  bcache: fix potential deadlock problem in btree_gc_coalesce
  ext4: stop overwrite the errcode in ext4_setup_super
  perf stat: Fix NULL pointer dereference
  perf report: Fix NULL pointer dereference in hists__fprintf_nr_sample_events()
  usb/ehci-platform: Set PM runtime as active on resume
  usb: host: ehci-platform: add a quirk to avoid stuck
  usb/xhci-plat: Set PM runtime as active on resume
  bpf: Fix memlock accounting for sock_hash
  iavf: fix speed reporting over virtchnl
  xdp: Fix xsk_generic_xmit errno
  nfs: set invalid blocks after NFSv4 writes
  nvme-pci: use simple suspend when a HMB is enabled
  net/filter: Permit reading NET in load_bytes_relative when MAC not set
  x86/idt: Keep spurious entries unset in system_vectors
  scsi: acornscsi: Fix an error handling path in acornscsi_probe()
  libbpf: Handle GCC noreturn-turned-volatile quirk
  drm/sun4i: hdmi ddc clk: Fix size of m divider
  tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes
  bpf, sockhash: Synchronize delete from bucket list on map free
  bpf/sockmap: Fix kernel panic at __tcp_bpf_recvmsg
  ASoC: rt5645: Add platform-data for Asus T101HA
  ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT10-A tablet
  ASoC: SOF: nocodec: conditionally set dpcm_capture/dpcm_playback flags
  ASoC: core: only convert non DPCM link to DPCM link
  afs: Fix memory leak in afs_put_sysnames()
  f2fs: don't return vmalloc() memory from f2fs_kmalloc()
  selftests/net: in timestamping, strncpy needs to preserve null byte
  drivers/perf: hisi: Fix wrong value for all counters enable
  i2c: icy: Fix build with CONFIG_AMIGA_PCMCIA=n
  NTB: ntb_test: Fix bug when counting remote files
  NTB: perf: Fix race condition when run with ntb_test
  NTB: perf: Fix support for hardware that doesn't have port numbers
  NTB: perf: Don't require one more memory window than number of peers
  NTB: Revert the change to use the NTB device dev for DMA allocations
  NTB: ntb_tool: reading the link file should not end in a NULL byte
  ntb_tool: pass correct struct device to dma_alloc_coherent
  ntb_perf: pass correct struct device to dma_alloc_coherent
  net: marvell: Fix OF_MDIO config check
  gfs2: fix use-after-free on transaction ail lists
  blktrace: fix endianness for blk_log_remap()
  blktrace: fix endianness in get_pdu_int()
  blktrace: use errno instead of bi_status
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really random
  include/linux/bitops.h: avoid clang shift-count-overflow warnings
  lib/zlib: remove outdated and incorrect pre-increment optimization
  geneve: change from tx_error to tx_dropped on missing metadata
  crypto: omap-sham - add proper load balancing support for multicore
  drm/amd/display: Revalidate bandwidth before commiting DC updates
  nfsd: safer handling of corrupted c_type
  pinctrl: freescale: imx: Fix an error handling path in 'imx_pinctrl_probe()'
  pinctrl: imxl: Fix an error handling path in 'imx1_pinctrl_core_probe()'
  scsi: ufs: Don't update urgent bkops level when toggling auto bkops
  scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj
  gfs2: Allow lock_nolock mount to specify jid=X
  nfsd4: make drc_slab global, not per-net
  ceph: don't return -ESTALE if there's still an open file
  drm/nouveau/disp/gm200-: fix NV_PDISP_SOR_HDMI2_CTRL(n) selection
  openrisc: Fix issue with argument clobbering for clone/fork
  rxrpc: Adjust /proc/net/rxrpc/calls to display call->debug_id not user_ID
  mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()
  rtc: rv3028: Add missed check for devm_regmap_init_i2c()
  vfio/mdev: Fix reference count leak in add_mdev_supported_type
  ASoC: fsl_asrc_dma: Fix dma_chan leak when config DMA channel failed
  extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'
  powerpc/4xx: Don't unmap NULL mbase
  input: i8042 - Remove special PowerPC handling
  of: Fix a refcounting bug in __of_attach_node_sysfs()
  NFSv4.1 fix rpc_call_done assignment for BIND_CONN_TO_SESSION
  net: sunrpc: Fix off-by-one issues in 'rpc_ntop6'
  /dev/mem: Revoke mappings when a driver claims the region
  misc: xilinx-sdfec: improve get_user_pages_fast() error handling
  clk: ast2600: Fix AHB clock divider for A1
  clk: sprd: return correct type of value for _sprd_pll_recalc_rate
  KVM: PPC: Book3S: Fix some RCU-list locks
  KVM: PPC: Book3S HV: Ignore kmemleak false positives
  scsi: ufs-qcom: Fix scheduling while atomic issue
  clk: bcm2835: Fix return type of bcm2835_register_gate
  scsi: target: tcmu: Fix a use after free in tcmu_check_expired_queue_cmd()
  ASoC: fix incomplete error-handling in img_i2s_in_probe.
  powerpc/32s: Don't warn when mapping RO data ROX.
  mfd: stmfx: Disable IRQ in suspend to avoid spurious interrupt
  mfd: stmfx: Fix stmfx_irq_init error path
  mfd: stmfx: Reset chip on resume as supply was disabled
  x86/apic: Make TSC deadline timer detection message visible
  RDMA/iw_cxgb4: cleanup device debugfs entries on ULD remove
  scripts: headers_install: Exit with error on config leak
  usb: gadget: Fix issue with config_ep_by_speed function
  usb: gadget: fix potential double-free in m66592_probe.
  usb: gadget: lpc32xx_udc: don't dereference ep pointer before null check
  USB: gadget: udc: s3c2410_udc: Remove pointless NULL check in s3c2410_udc_nuke
  usb: dwc2: gadget: move gadget resume after the core is in L0 state
  watchdog: da9062: No need to ping manually before setting timeout
  IB/cma: Fix ports memory leak in cma_configfs
  PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link
  PCI: dwc: Fix inner MSI IRQ domain registration
  PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port
  dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone
  powerpc/64s/pgtable: fix an undefined behaviour
  arm64: tegra: Fix flag for 64-bit resources in 'ranges' property
  arm64: tegra: Fix ethernet phy-mode for Jetson Xavier
  fuse: copy_file_range should truncate cache
  fuse: fix copy_file_range cache issues
  firmware: imx: scu: Fix possible memory leak in imx_scu_probe()
  scsi: target: tcmu: Userspace must not complete queued commands
  RDMA/hns: Fix cmdq parameter of querying pf timer resource
  RDMA/hns: Bugfix for querying qkey
  clk: samsung: exynos5433: Add IGNORE_UNUSED flag to sclk_i2s1
  fpga: dfl: afu: Corrected error handling levels
  tty: n_gsm: Fix bogus i++ in gsm_data_kick
  USB: host: ehci-mxc: Add error handling in ehci_mxc_drv_probe()
  ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT8-A tablet
  drm/msm/mdp5: Fix mdp5_init error path for failed mdp5_kms allocation
  usb/ohci-platform: Fix a warning when hibernating
  vfio-pci: Mask cap zero
  powerpc/ps3: Fix kexec shutdown hang
  drivers: phy: sr-usb: do not use internal fsm for USB2 phy init
  powerpc/pseries/ras: Fix FWNMI_VALID off by one
  powerpc/64s/exception: Fix machine check no-loss idle wakeup
  ipmi: use vzalloc instead of kmalloc for user creation
  habanalabs: increase timeout during reset
  PCI/PM: Assume ports without DLL Link Active train links in 100 ms
  HID: Add quirks for Trust Panora Graphic Tablet
  ALSA: usb-audio: Add duplex sound support for USB devices using implicit feedback
  tty: n_gsm: Fix waking up upper tty layer when room available
  tty: n_gsm: Fix SOF skipping
  powerpc/64: Don't initialise init_task->thread.regs
  PCI: Fix pci_register_host_bridge() device_register() error handling
  clk: ti: composite: fix memory leak
  USB: ohci-sm501: fix error return code in ohci_hcd_sm501_drv_probe()
  dlm: remove BUG() before panic()
  pinctrl: rockchip: fix memleak in rockchip_dt_node_to_map
  ASoC: ti: omap-mcbsp: Fix an error handling path in 'asoc_mcbsp_probe()'
  ASoC: ux500: mop500: Fix some refcounted resources issues
  SoC: rsnd: add interrupt support for SSI BUSIF buffer
  scsi: mpt3sas: Fix double free warnings
  scsi: target: loopback: Fix READ with data and sensebytes
  arm64: dts: msm8996: Fix CSI IRQ types
  ASoC: SOF: core: fix error return code in sof_probe_continue()
  power: supply: smb347-charger: IRQSTAT_D is volatile
  power: supply: lp8788: Fix an error handling path in 'lp8788_charger_probe()'
  ALSA: firewire-lib: fix invalid assignment to union data for directional parameter
  scsi: qla2xxx: Fix warning after FC target reset
  PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
  PCI: rcar: Fix incorrect programming of OB windows
  drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a driver developer is foolish
  serial: amba-pl011: Make sure we initialize the port.lock spinlock
  i2c: pxa: fix i2c_pxa_scream_blue_murder() debug output
  PCI: v3-semi: Fix a memory leak in v3_pci_probe() error handling paths
  staging: sm750fb: add missing case while setting FB_VISUAL
  staging: wilc1000: Increase the size of wid_list array
  usb: dwc3: gadget: Properly handle failed kick_transfer
  usb: dwc3: gadget: Properly handle ClearFeature(halt)
  HID: intel-ish-hid: avoid bogus uninitialized-variable warning
  soundwire: slave: don't init debugfs on device registration error
  ASoC: max98373: reorder max98373_reset() in resume
  clk: meson: meson8b: Don't rely on u-boot to init all GP_PLL registers
  thermal/drivers/ti-soc-thermal: Avoid dereferencing ERR_PTR
  gpio: pca953x: fix handling of automatic address incrementing
  clk: meson: meson8b: Fix the vclk_div{1, 2, 4, 6, 12}_en gate bits
  clk: meson: meson8b: Fix the polarity of the RESET_N lines
  clk: meson: meson8b: Fix the first parent of vid_pll_in_sel
  slimbus: ngd: get drvdata from correct device
  tty: hvc: Fix data abort due to race in hvc_open
  s390/qdio: put thinint indicator after early error
  ALSA: usb-audio: Fix racy list management in output queue
  ALSA: usb-audio: Improve frames size computation
  staging: gasket: Fix mapping refcnt leak when register/store fails
  staging: gasket: Fix mapping refcnt leak when put attribute fails
  firmware: qcom_scm: fix bogous abuse of dma-direct internals
  arm64: dts: qcom: fix pm8150 gpio interrupts
  virtiofs: schedule blocking async replies in separate worker
  pinctrl: rza1: Fix wrong array assignment of rza1l_swio_entries
  scsi: qedf: Fix crash when MFW calls for protocol stats while function is still probing
  gpio: dwapb: Append MODULE_ALIAS for platform driver
  RDMA/mlx5: Fix udata response upon SRQ creation
  ARM: dts: sun8i-h2-plus-bananapi-m2-zero: Fix led polarity
  arm64: dts: qcom: msm8916: remove unit name for thermal trip points
  scsi: qedi: Do not flush offload work if ARP not resolved
  arm64: dts: mt8173: fix unit name warnings
  staging: greybus: fix a missing-check bug in gb_lights_light_config()
  x86/purgatory: Disable various profiling and sanitizing options
  apparmor: fix nnp subset test for unconfined
  scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM
  scsi: sr: Fix sr_probe() missing deallocate of device minor
  bpf, sockhash: Fix memory leak when unlinking sockets in sock_hash_free
  ASoC: meson: add missing free_irq() in error path
  f2fs: handle readonly filesystem in f2fs_ioc_shutdown()
  apparmor: check/put label on apparmor_sk_clone_security()
  net: dsa: lantiq_gswip: fix and improve the unsupported interface error
  apparmor: fix introspection of of task mode for unconfined tasks
  mksysmap: Fix the mismatch of '.L' symbols in System.map
  NTB: Fix the default port and peer numbers for legacy drivers
  NTB: ntb_pingpong: Choose doorbells based on port number
  yam: fix possible memory leak in yam_init_driver
  sparc32: mm: Don't try to free page-table pages if ctor() fails
  pwm: img: Call pm_runtime_put() in pm_runtime_get_sync() failed case
  powerpc/crashkernel: Take "mem=" option into account
  ASoC: qcom: q6asm-dai: kCFI fix
  cifs: set up next DFS target before generic_ip_connect()
  RDMA/core: Fix several reference count leaks.
  PCI: vmd: Filter resource type bits from shadow register
  nfsd: Fix svc_xprt refcnt leak when setup callback client failed
  powerpc/perf/hv-24x7: Fix inconsistent output values incase multiple hv-24x7 events run
  IB/mlx5: Fix DEVX support for MLX5_CMD_OP_INIT2INIT_QP command
  clk: clk-flexgen: fix clock-critical handling
  scsi: vhost: Notify TCM about the maximum sg entries supported per command
  scsi: lpfc: Fix lpfc_nodelist leak when processing unsolicited event
  clk: zynqmp: fix memory leak in zynqmp_register_clocks
  scsi: cxgb3i: Fix some leaks in init_act_open()
  mfd: wm8994: Fix driver operation if loaded as modules
  powerpc/ptdump: Add _PAGE_COHERENT flag
  usb: gadget: core: sync interrupt before unbind the udc
  gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration
  m68k/PCI: Fix a memory leak in an error handling path
  PCI: pci-bridge-emul: Fix PCIe bit conflicts
  scsi: hisi_sas: Do not reset phy timer to wait for stray phy up
  RDMA/mlx5: Add init2init as a modify command
  coresight: tmc: Fix TMC mode read in tmc_read_prepare_etb()
  vfio/pci: fix memory leaks in alloc_perm_bits()
  arm64: dts: fvp/juno: Fix node address fields
  ps3disk: use the default segment boundary
  PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register
  arm64: dts: fvp: Fix GIC child nodes
  ASoC: SOF: Do nothing when DSP PM callbacks are not set
  clk: renesas: cpg-mssr: Fix STBCR suspend/resume handling
  pinctrl: ocelot: Fix GPIO interrupt decoding on Jaguar2
  arm64: dts: juno: Fix GIC child nodes
  arm64: dts: armada-3720-turris-mox: fix SFP binding
  arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes
  dm mpath: switch paths in dm_blk_ioctl() code path
  misc: fastrpc: fix potential fastrpc_invoke_ctx leak
  misc: fastrpc: Fix an incomplete memory release in fastrpc_rpmsg_probe()
  serial: 8250: Fix max baud limit in generic 8250 port
  usblp: poison URBs upon disconnect
  clk: samsung: Mark top ISP and CAM clocks on Exynos542x as critical
  remoteproc: qcom_q6v5_mss: map/unmap mpss segments before/after use
  i2c: pxa: clear all master action bits in i2c_pxa_stop_message()
  f2fs: report delalloc reserve as non-free in statfs for project quota
  iio: bmp280: fix compensation of humidity
  rtc: mc13xxx: fix a double-unlock issue
  powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT
  Input: edt-ft5x06 - fix get_default register write access
  scsi: qla2xxx: Fix issue with adapter's stopping state
  PCI: Allow pci_resize_resource() for devices on root bus
  ALSA: isa/wavefront: prevent out of bounds write in ioctl
  ALSA: hda/realtek - Introduce polarity for micmute LED GPIO
  arm64: dts: meson: fixup SCP sram nodes
  scsi: qedi: Check for buffer overflow in qedi_set_path()
  scsi: core: free sgtables in case command setup fails
  ARM: dts: stm32: Add missing ethernet PHY reset on AV96
  ARM: integrator: Add some Kconfig selections
  ASoC: davinci-mcasp: Fix dma_chan refcnt leak when getting dma type
  ARM: dts: renesas: Fix IOMMU device node names
  backlight: lp855x: Ensure regulators are disabled on probe failure
  ASoC: fsl_esai: Disable exception interrupt before scheduling tasklet
  clk: qcom: msm8916: Fix the address location of pll->config_reg
  remoteproc: Fix IDR initialisation in rproc_alloc()
  iio: pressure: bmp280: Tolerate IRQ before registering
  ASoC: SOF: imx8: Fix randbuild error
  i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets
  ASoC: tegra: tegra_wm8903: Support nvidia, headset property
  clk: sunxi: Fix incorrect usage of round_down()
  power: supply: bq24257_charger: Replace depends on REGMAP_I2C with select
  ANDROID: abi_gki_aarch64_qcom_whitelist: Add reboot_mode
  ANDROID: Update kabi for db845c (following moving pinctrl to a module)
  ANDROID: GKI: Remove msm_pinctrl-* symbols from the abi lists
  ANDROID: db845c_gki.fragment: Add PINCTRL_MSM=m
  ANDROID: GKI: Remove PINCTRL_MSM as built in driver
  ANDROID: pinctrl: qcom: Allow pinctrl-msm code to be loadable as a module
  ANDROID: GKI: update ABI after struct vm_fault changes
  ANDROID: GKI: mm: add struct vm_fault fields for SPECULATIVE_PAGE_FAULTS
  FROMLIST: f2fs: fix use-after-free when accessing bio->bi_crypt_context
  ANDROID: GKI: Update ABI for incremental fs
  ANDROID: GKI: Update whitelist and defconfig for incfs
  ANDROID: gki_defconfig: x86: Enable KERNEL_LZ4
  ANDROID: GKI: scripts: Makefile: update the lz4 command
  ANDROID: Use depmod from the hermetic toolchain
  ANDROID: ABI/Whitelist: update symbols of unisoc whitelist
  Linux 5.4.48
  perf symbols: Fix kernel maps for kcore and eBPF
  perf symbols: Fix debuginfo search for Ubuntu
  perf probe: Check address correctness by map instead of _etext
  perf probe: Fix to check blacklist address correctly
  perf probe: Do not show the skipped events
  f2fs: fix checkpoint=disable:%u%%
  w1: omap-hdq: cleanup to add missing newline for some dev_dbg
  mtd: rawnand: tmio: Fix the probe error path
  mtd: rawnand: mtk: Fix the probe error path
  mtd: rawnand: pasemi: Fix the probe error path
  mtd: rawnand: plat_nand: Fix the probe error path
  mtd: rawnand: sunxi: Fix the probe error path
  mtd: rawnand: oxnas: Fix the probe error path
  mtd: rawnand: socrates: Fix the probe error path
  mtd: rawnand: orion: Fix the probe error path
  mtd: rawnand: xway: Fix the probe error path
  mtd: rawnand: ingenic: Fix the probe error path
  mtd: rawnand: sharpsl: Fix the probe error path
  mtd: rawnand: diskonchip: Fix the probe error path
  mtd: rawnand: brcmnand: fix hamming oob layout
  mtd: rawnand: onfi: Fix redundancy detection check
  mtd: rawnand: Fix nand_gpio_waitrdy()
  sunrpc: clean up properly in gss_mech_unregister()
  sunrpc: svcauth_gss_register_pseudoflavor must reject duplicate registrations.
  kbuild: force to build vmlinux if CONFIG_MODVERSION=y
  powerpc/64s: Save FSCR to init_task.thread.fscr after feature init
  powerpc/64s: Don't let DT CPU features set FSCR_DSCR
  powerpc/32: Disable KASAN with pages bigger than 16k
  powerpc/kasan: Fix shadow pages allocation failure
  powerpc/kasan: Fix issues by lowering KASAN_SHADOW_END
  powerpc/32s: Fix another build failure with CONFIG_PPC_KUAP_DEBUG
  drivers/macintosh: Fix memleak in windfarm_pm112 driver
  ARM: dts: s5pv210: Set keep-power-in-suspend for SDHCI1 on Aries
  ARM: dts: at91: sama5d2_ptc_ek: fix vbus pin
  ARM: dts: exynos: Fix GPIO polarity for thr GalaxyS3 CM36651 sensor's bus
  soc/tegra: pmc: Select GENERIC_PINCONF
  ARM: tegra: Correct PL310 Auxiliary Control Register initialization
  kernel/cpu_pm: Fix uninitted local in cpu_pm
  powerpc/fadump: Account for memory_limit while reserving memory
  powerpc/fadump: consider reserved ranges while reserving memory
  powerpc/fadump: use static allocation for reserved memory ranges
  alpha: fix memory barriers so that they conform to the specification
  dm crypt: avoid truncating the logical block size
  sparc64: fix misuses of access_process_vm() in genregs32_[sg]et()
  sparc32: fix register window handling in genregs32_[gs]et()
  gnss: sirf: fix error return code in sirf_probe()
  pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs
  pinctrl: samsung: Correct setting of eint wakeup mask on s5pv210
  power: supply: core: fix memory leak in HWMON error path
  power: supply: core: fix HWMON temperature labels
  power: vexpress: add suppress_bind_attrs to true
  EDAC/amd64: Add AMD family 17h model 60h PCI IDs
  hwmon: (k10temp) Add AMD family 17h model 60h PCI match
  igb: Report speed and duplex as unknown when device is runtime suspended
  clk: mediatek: assign the initial value to clk_init_data of mtk_mux
  media: ov5640: fix use of destroyed mutex
  b43_legacy: Fix connection problem with WPA3
  b43: Fix connection problem with WPA3
  b43legacy: Fix case where channel status is corrupted
  Bluetooth: hci_bcm: fix freeing not-requested IRQ
  serial: 8250: Avoid error message on reprobe
  media: cedrus: Program output format during each run
  media: go7007: fix a miss of snd_card_free
  carl9170: remove P2P_GO support
  e1000e: Relax condition to trigger reset for ME workaround
  e1000e: Disable TSO for buffer overrun workaround
  PCI: Program MPS for RCiEP devices
  ima: Set again build_ima_appraise variable
  ima: Remove redundant policy rule set in add_rules()
  x86/amd_nb: Add AMD family 17h model 60h PCI IDs
  serial: 8250_pci: Move Pericom IDs to pci_ids.h
  PCI: Add Loongson vendor ID
  x86/amd_nb: Add Family 19h PCI IDs
  PCI: vmd: Add device id for VMD device 8086:9A0B
  PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
  PCI: Avoid FLR for AMD Starship USB 3.0
  PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
  PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect
  ext4: fix race between ext4_sync_parent() and rename()
  ext4: fix error pointer dereference
  ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
  evm: Fix possible memory leak in evm_calc_hmac_or_hash()
  ima: Remove __init annotation from ima_pcrread()
  ima: Call ima_calc_boot_aggregate() in ima_eventdigest_init()
  ima: Directly assign the ima_default_policy pointer to ima_rules
  ima: Evaluate error in init_ima()
  ima: Switch to ima_hash_algo for boot aggregate
  ima: Fix ima digest hash table key calculation
  mm: call cond_resched() from deferred_init_memmap()
  mm/pagealloc.c: call touch_nmi_watchdog() on max order boundaries in deferred init
  mm: initialize deferred pages with interrupts enabled
  mm: thp: make the THP mapcount atomic against __split_huge_pmd_locked()
  powerpc/mm: Fix conditions to perform MMU specific management by blocks on PPC32.
  btrfs: fix space_info bytes_may_use underflow during space cache writeout
  btrfs: fix space_info bytes_may_use underflow after nocow buffered write
  btrfs: fix wrong file range cleanup after an error filling dealloc range
  btrfs: fix error handling when submitting direct I/O bio
  btrfs: force chunk allocation if our global rsv is larger than metadata
  btrfs: send: emit file capabilities after chown
  btrfs: include non-missing as a qualifier for the latest_bdev
  btrfs: free alien device after device add
  string.h: fix incompatibility between FORTIFY_SOURCE and KASAN
  kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE
  selftests/bpf, flow_dissector: Close TAP device FD after the test
  bpf: Fix running sk_skb program types with ktls
  bpf: Refactor sockmap redirect code so its easy to reuse
  bpf: Fix map permissions check
  libbpf: Fix perf_buffer__free() API for sparse allocs
  platform/x86: asus_wmi: Reserve more space for struct bias_args
  platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
  platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
  platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
  cpuidle: Fix three reference count leaks
  spi: dw: Return any value retrieved from the dma_transfer callback
  mmc: sdhci-esdhc-imx: fix the mask for tuning start point
  iwlwifi: mvm: fix aux station leak
  ixgbe: fix signed-integer-overflow warning
  ice: fix potential double free in probe unrolling
  mmc: via-sdmmc: Respect the cmd->busy_timeout from the mmc core
  staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core
  mmc: sdhci-msm: Set SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 quirk
  bcache: fix refcount underflow in bcache_device_free()
  MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
  PCI: Don't disable decoding when mmio_always_on is set
  macvlan: Skip loopback packets in RX handler
  btrfs: qgroup: mark qgroup inconsistent if we're inherting snapshot to a new qgroup
  btrfs: improve global reserve stealing logic
  m68k: mac: Don't call via_flush_cache() on Mac IIfx
  MIPS: tools: Fix resource leak in elf-entry.c
  x86/mm: Stop printing BRK addresses
  selftests/bpf: CONFIG_IPV6_SEG6_BPF required for test_seg6_loop.o
  drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode
  drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven
  crypto: stm32/crc32 - fix multi-instance
  crypto: stm32/crc32 - fix run-time self test issue.
  crypto: stm32/crc32 - fix ext4 chksum BUG_ON()
  mips: Add udelay lpj numbers adjustment
  mips: MAAR: Use more precise address mask
  sched: Defend cfs and rt bandwidth quota against overflow
  x86/boot: Correct relocation destination on old linkers
  kgdboc: Use a platform device to handle tty drivers showing up late
  mwifiex: Fix memory corruption in dump_station
  rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup()
  net/mlx5e: IPoIB, Drop multicast packets that this interface sent
  veth: Adjust hard_start offset on redirect XDP frames
  iocost: don't let vrate run wild while there's no saturation signal
  raid5: remove gfp flags from scribble_alloc()
  md: don't flush workqueue unconditionally in md_open
  mt76: avoid rx reorder buffer overflow
  drm/mcde: dsi: Fix return value check in mcde_dsi_bind()
  net: qed*: Reduce RX and TX default ring count when running inside kdump kernel
  wcn36xx: Fix error handling path in 'wcn36xx_probe()'
  ath10k: Remove msdu from idr when management pkt send fails
  nvme-tcp: use bh_lock in data_ready
  nvme-pci: align io queue count with allocted nvme_queue in nvme_probe
  nvme: refine the Qemu Identify CNS quirk
  iwlwifi: avoid debug max amsdu config overwriting itself
  platform/x86: intel-vbtn: Also handle tablet-mode switch on "Detachable" and "Portable" chassis-types
  platform/x86: intel-vbtn: Do not advertise switches to userspace if they are not there
  platform/x86: intel-vbtn: Split keymap into buttons and switches parts
  platform/x86: intel-vbtn: Use acpi_evaluate_integer()
  xfs: fix duplicate verification from xfs_qm_dqflush()
  xfs: reset buffer write failure state on successful completion
  kgdb: Fix spurious true from in_dbg_master()
  mips: cm: Fix an invalid error code of INTVN_*_ERR
  MIPS: Truncate link address into 32bit for 32bit kernel
  Crypto/chcr: fix for ccm(aes) failed test
  xfs: clean up the error handling in xfs_swap_extents
  libertas_tf: avoid a null dereference in pointer priv
  powerpc/spufs: fix copy_to_user while atomic
  net: allwinner: Fix use correct return type for ndo_start_xmit()
  media: cec: silence shift wrapping warning in __cec_s_log_addrs()
  drivers: net: davinci_mdio: fix potential NULL dereference in davinci_mdio_probe()
  selinux: fix error return code in policydb_read()
  net: lpc-enet: fix error return code in lpc_mii_init()
  iocost_monitor: drop string wrap around numbers when outputting json
  drivers/perf: hisi: Fix typo in events attribute array
  sched/core: Fix illegal RCU from offline CPUs
  exit: Move preemption fixup up, move blocking operations down
  lib/mpi: Fix 64-bit MIPS build with Clang
  net: bcmgenet: Fix WoL with password after deep sleep
  net: bcmgenet: set Rx mode before starting netif
  selftests/bpf: Fix memory leak in extract_build_id()
  netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported
  dpaa2-eth: fix return codes used in ndo_setup_tc
  Drivers: hv: vmbus: Always handle the VMBus messages on CPU0
  audit: fix a net reference leak in audit_list_rules_send()
  Bluetooth: btbcm: Add 2 missing models to subver tables
  ath10k: add flush tx packets for SDIO chip
  MIPS: Make sparse_init() using top-down allocation
  media: platform: fcp: Set appropriate DMA parameters
  media: dvb: return -EREMOTEIO on i2c transfer failure.
  audit: fix a net reference leak in audit_send_reply()
  drm/mediatek: set dpi pin mode to gpio low to avoid leakage current
  dt-bindings: display: mediatek: control dpi pins mode to avoid leakage
  e1000: Distribute switch variables for initialization
  tools api fs: Make xxx__mountpoint() more scalable
  regulator: qcom-rpmh: Fix typos in pm8150 and pm8150l
  brcmfmac: fix wrong location to get firmware feature
  spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource
  media: staging/intel-ipu3: Implement lock for stream on/off operations
  ath10k: fix kernel null pointer dereference
  staging: android: ion: use vmap instead of vm_map_ram
  x86: fix vmap arguments in map_irq_stack
  net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss()
  x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit
  spi: dw: Fix Rx-only DMA transfers
  Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe()
  mmc: meson-mx-sdio: trigger a soft reset after a timeout or CRC error
  ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS
  ice: Fix memory leak
  batman-adv: Revert "disable ethtool link speed detection when auto negotiation off"
  ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE
  btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums
  btrfs: account for trans_block_rsv in may_commit_transaction
  media: dvbdev: Fix tuner->demod media controller link
  clocksource: dw_apb_timer_of: Fix missing clockevent timers
  clocksource: dw_apb_timer: Make CPU-affiliation being optional
  spi: dw: Enable interrupts in accordance with DMA xfer mode
  mips: Fix cpu_has_mips64r1/2 activation for MIPS32 CPUs
  ACPI/IORT: Fix PMCG node single ID mapping handling
  pmu/smmuv3: Clear IRQ affinity hint on device removal
  kgdb: Prevent infinite recursive entries to the debugger
  kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb
  Bluetooth: Add SCO fallback for invalid LMP parameters error
  MIPS: Loongson: Build ATI Radeon GPU driver as module
  platform/x86: dell-laptop: don't register micmute LED if there is no token
  ixgbe: Fix XDP redirect on archs with PAGE_SIZE above 4K
  lockdown: Allow unprivileged users to see lockdown status
  drm: rcar-du: Set primary plane zpos immutably at initializing
  block: reset mapping if failed to update hardware queue count
  arm64: insn: Fix two bugs in encoding 32-bit logical immediates
  block: alloc map and request for new hardware queue
  ACPICA: Dispatcher: add status checks
  spi: dw: Zero DMA Tx and Rx configurations on stack
  rtw88: fix an issue about leak system resources
  media: staging: ipu3: Fix stale list entries on parameter queue failure
  arm64: cacheflush: Fix KGDB trap detection
  ath10k: remove the max_sched_scan_reqs value
  efi/libstub/x86: Work around LLVM ELF quirk build regression
  net: ena: fix error returning in ena_com_get_hash_function()
  net: atlantic: make hw_get_regs optional
  sched/fair: Refill bandwidth before scaling
  x86,smap: Fix smap_{save,restore}() alternatives
  spi: pxa2xx: Apply CS clk quirk to BXT
  libbpf: Fix memory leak and possible double-free in hashmap__clear
  arm64/kernel: Fix range on invalidating dcache for boot page tables
  drm/amdgpu: Init data to avoid oops while reading pp_num_states.
  spi: spi-mem: Fix Dual/Quad modes on Octal-capable devices
  objtool: Ignore empty alternatives
  media: si2157: Better check for running tuner in init
  media: vicodec: Fix error codes in probe function
  crypto: ccp -- don't "select" CONFIG_DMADEVICES
  media: imx: imx7-mipi-csis: Cleanup and fix subdev pad format handling
  media: staging: imgu: do not hold spinlock during freeing mmu page table
  drm: bridge: adv7511: Extend list of audio sample rates
  ath10k: Fix the race condition in firmware dump work queue
  drm/amdgpu: fix and cleanup amdgpu_gem_object_close v4
  ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
  writeback: Drop I_DIRTY_TIME_EXPIRE
  writeback: Fix sync livelock due to b_dirty_time processing
  writeback: Avoid skipping inode writeback
  writeback: Protect inode->i_io_list with inode->i_lock
  Revert "writeback: Avoid skipping inode writeback"
  ANDROID: GKI: enable some more USB configfs options
  Linux 5.4.47
  KVM: arm64: Save the host's PtrAuth keys in non-preemptible context
  KVM: arm64: Synchronize sysreg state on injecting an AArch32 exception
  xen/pvcalls-back: test for errors when calling backend_connect()
  block/floppy: fix contended case in floppy_queue_rq()
  mmc: sdio: Fix several potential memory leaks in mmc_sdio_init_card()
  mmc: sdio: Fix potential NULL pointer error in mmc_sdio_init_card()
  ARM: dts: at91: sama5d2_ptc_ek: fix sdmmc0 node description
  mmc: uniphier-sd: call devm_request_irq() after tmio_mmc_host_probe()
  mmc: tmio: Further fixup runtime PM management at remove
  mmc: mmci_sdmmc: fix DMA API warning overlapping mappings
  mmc: sdhci-msm: Clear tuning done flag while hs400 tuning
  agp/intel: Reinforce the barrier after GTT updates
  perf: Add cond_resched() to task_function_call()
  fat: don't allow to mount if the FAT length == 0
  mm/slub: fix a memory leak in sysfs_slab_add()
  drm/vkms: Hold gem object while still in-use
  Smack: slab-out-of-bounds in vsscanf
  ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
  ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb
  ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
  ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx
  ath9k: Fix use-after-free Read in htc_connect_service
  selftests/ftrace: Return unsupported if no error_log file
  scsi: lpfc: Fix negation of else clause in lpfc_prep_node_fc4type
  scsi: megaraid_sas: TM command refire leads to controller firmware crash
  KVM: arm64: Make vcpu_cp1x() work on Big Endian hosts
  KVM: arm64: Stop writing aarch32's CSSELR into ACTLR
  KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits
  KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data)
  KVM: nVMX: Consult only the "basic" exit reason when routing nested exit
  KVM: nSVM: leave ASID aside in copy_vmcb_control_area
  KVM: nSVM: fix condition for filtering async PF
  KVM: nVMX: Skip IBPB when switching between vmcs01 and vmcs02
  video: fbdev: w100fb: Fix a potential double free.
  video: vt8500lcdfb: fix fallthrough warning
  EDAC/skx: Use the mcmtr register to retrieve close_pg/bank_xor_enable
  cpufreq: Fix up cpufreq_boost_set_sw()
  remoteproc: Fix and restore the parenting hierarchy for vdev
  remoteproc: Fall back to using parent memory pool if no dedicated available
  proc: Use new_inode not new_inode_pseudo
  ovl: initialize error in ovl_copy_xattr
  net/mlx5e: Fix repeated XSK usage on one channel
  net/mlx5: Fix fatal error handling during device load
  net/mlx5: drain health workqueue in case of driver load error
  selftests/net: in rxtimestamp getopt_long needs terminating null entry
  dccp: Fix possible memleak in dccp_init and dccp_fini
  crypto: virtio: Fix dest length calculation in __virtio_crypto_skcipher_do_req()
  crypto: virtio: Fix src/dst scatterlist calculation in __virtio_crypto_skcipher_do_req()
  crypto: virtio: Fix use-after-free in virtio_crypto_skcipher_finalize_req()
  firmware: imx: scu: Fix corruption of header
  firmware: imx-scu: Support one TX and one RX
  firmware: imx: warn on unexpected RX
  x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned
  crypto: drbg - fix error return code in drbg_alloc_state()
  crypto: algapi - Avoid spurious modprobe on LOADED
  crypto: cavium/nitrox - Fix 'nitrox_get_first_device()' when ndevlist is fully iterated
  gup: document and work around "COW can break either way" issue
  PM: runtime: clk: Fix clk_pm_runtime_get() error path
  spi: bcm-qspi: when tx/rx buffer is NULL set to 0
  spi: bcm-qspi: Handle clock probe deferral
  spi: bcm2835aux: Fix controller unregister order
  spi: bcm2835: Fix controller unregister order
  spi: pxa2xx: Fix runtime PM ref imbalance on probe error
  spi: pxa2xx: Fix controller unregister order
  spi: Fix controller unregister order
  spi: dw: Fix controller unregister order
  nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
  lib/lzo: fix ambiguous encoding bug in lzo-rle
  arm64: acpi: fix UBSAN warning
  ACPI: PM: Avoid using power resources if there are none for D0
  ACPI: GED: add support for _Exx / _Lxx handler methods
  ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
  ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
  ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt Dock
  ALSA: usb-audio: Fix inconsistent card PM state after resume
  ALSA: pcm: fix snd_pcm_link() lockdep splat
  ALSA: pcm: disallow linking stream to itself
  ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
  ALSA: fireface: fix configuration error for nominal sampling transfer frequency
  ALSA: es1688: Add the missed snd_card_free()
  watchdog: imx_sc_wdt: Fix reboot on crash
  smb3: add indatalen that can be a non-zero value to calculation of credit charge in smb2 ioctl
  smb3: fix incorrect number of credits when ioctl MaxOutputResponse > 64K
  efi/efivars: Add missing kobject_put() in sysfs entry creation error path
  io_uring: use kvfree() in io_sqe_buffer_register()
  ASoC: max9867: fix volume controls
  powerpc/ptdump: Properly handle non standard page size
  KVM: x86: Fix APIC page invalidation race
  KVM: x86: respect singlestep when emulating instruction
  KVM: x86/mmu: Set mmio_value to '0' if reserved #PF can't be generated
  perf/x86/intel: Add more available bits for OFFCORE_RESPONSE of Intel Tremont
  x86/reboot/quirks: Add MacBook6,1 reboot quirk
  x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
  x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.
  x86/speculation: Prevent rogue cross-process SSBD shutdown
  x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
  x86_64: Fix jiffies ODR violation
  sctp: fix refcount bug in sctp_wfree
  sctp: fix possibly using a bad saddr with a given dst
  iwlwifi: mvm: fix NVM check for 3168 devices
  ipv4: fix a RCU-list lock in fib_triestat_seq_show
  aio: fix async fsync creds
  fanotify: fix ignore mask logic for events on child and on dir
  selftests: fix flower parent qdisc
  mm: add kvfree_sensitive() for freeing sensitive data objects
  perf probe: Accept the instance number of kretprobe event
  PCI/PM: Adjust pcie_wait_for_link_delay() for caller delay
  KVM: x86: only do L1TF workaround on affected processors
  x86/cpu/amd: Make erratum #1054 a legacy erratum
  s390/pci: Log new handle in clp_disable_fh()
  padata: add separate cpuhp node for CPUHP_PADATA_DEAD
  RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated
  smack: avoid unused 'sip' variable warning
  ath9k_htc: Silence undersized packet warnings
  spi: dw: Fix native CS being unset
  powerpc/xive: Clear the page tables for the ESB IO mapping
  drivers/net/ibmvnic: Update VNIC protocol version reporting
  gfs2: Even more gfs2_find_jhead fixes
  csky: Fixup abiv2 syscall_trace break a4 & a5
  Input: synaptics - add a second working PNP_ID for Lenovo T470s
  sched/fair: Don't NUMA balance for kthreads
  ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
  Input: mms114 - fix handling of mms345l
  elfnote: mark all .note sections SHF_ALLOC
  bpf: Support llvm-objcopy for vmlinux BTF
  vxlan: Avoid infinite loop when suppressing NS messages with invalid options
  bridge: Avoid infinite loop when suppressing NS messages with invalid options
  tun: correct header offsets in napi frags mode
  net_failover: fixed rollback in net_failover_open()
  mlxsw: core: Use different get_trend() callbacks for different thermal zones
  ipv6: fix IPV6_ADDRFORM operation logic
  fs-verity: remove unnecessary extern keywords
  fs-verity: fix all kerneldoc warnings
  fscrypt: add support for IV_INO_LBLK_32 policies
  fscrypt: make test_dummy_encryption use v2 by default
  fscrypt: support test_dummy_encryption=v2
  fscrypt: add fscrypt_add_test_dummy_key()
  linux/parser.h: add include guards
  fscrypt: remove unnecessary extern keywords
  fscrypt: name all function parameters
  fscrypt: fix all kerneldoc warnings
  ANDROID: GKI: enable CONFIG_EXT4_FS_POSIX_ACL.
  ANDROID: arch: arm: Increase kernel command line size
  ANDROID: arch: arm64: Increase kernel command line size
  ANDROID: ABI: Add typec symbols to QCOM ABI whitelist
  UPSTREAM: usb: typec: Remove the callback members from struct typec_capability
  UPSTREAM: usb: typec: ucsi: Start using struct typec_operations
  UPSTREAM: usb: typec: tps6598x: Start using struct typec_operations
  UPSTREAM: usb: typec: tcpm: Start using struct typec_operations
  UPSTREAM: usb: typec: Separate the operations vector
  UPSTREAM: usb: typec: Introduce typec_get_drvdata()
  UPSTREAM: usb: typec: Copy everything from struct typec_capability during registration
  ANDROID: kbuild: merge more sections with LTO
  UPSTREAM: driver core: Remove unnecessary is_fwnode_dev variable in device_add()
  UPSTREAM: driver core: Remove check in driver_deferred_probe_force_trigger()
  UPSTREAM: of: platform: Batch fwnode parsing when adding all top level devices
  BACKPORT: driver core: fw_devlink: Add support for batching fwnode parsing
  BACKPORT: driver core: Look for waiting consumers only for a fwnode's primary device
  UPSTREAM: usb: musb: Add support for MediaTek musb controller
  UPSTREAM: usb: musb: Add musb_clearb/w() interface
  UPSTREAM: usb: musb: Add noirq type of dma create interface
  UPSTREAM: usb: musb: Add get/set toggle hooks
  UPSTREAM: dt-bindings: usb: musb: Add support for MediaTek musb controller
  Revert "ANDROID: Remove default y on BRIDGE_IGMP_SNOOPING"
  Linux 5.4.46
  Revert "net/mlx5: Annotate mutex destroy for root ns"
  uprobes: ensure that uprobe->offset and ->ref_ctr_offset are properly aligned
  x86/speculation: Add Ivy Bridge to affected list
  x86/speculation: Add SRBDS vulnerability and mitigation documentation
  x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation
  x86/cpu: Add 'table' argument to cpu_matches()
  x86/cpu: Add a steppings field to struct x86_cpu_id
  x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2
  nvmem: qfprom: remove incorrect write support
  CDC-ACM: heed quirk also in error handling
  staging: rtl8712: Fix IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
  tty: hvc_console, fix crashes on parallel open/close
  vt: keyboard: avoid signed integer overflow in k_ascii
  usb: musb: Fix runtime PM imbalance on error
  usb: musb: start session in resume for host port
  iio: adc: stm32-adc: fix a wrong error message when probing interrupts
  iio:chemical:pms7003: Fix timestamp alignment and prevent data leak.
  iio: vcnl4000: Fix i2c swapped word reading.
  iio:chemical:sps30: Fix timestamp alignment
  USB: serial: ch341: add basis for quirk detection
  USB: serial: option: add Telit LE910C1-EUX compositions
  USB: serial: usb_wwan: do not resubmit rx urb on fatal errors
  USB: serial: qcserial: add DW5816e QDL support
  net: be more gentle about silly gso requests coming from user
  net: check untrusted gso_size at kernel entry
  vsock: fix timeout in vsock_accept()
  nfp: flower: fix used time of merge flow statistics
  NFC: st21nfca: add missed kfree_skb() in an error path
  net: usb: qmi_wwan: add Telit LE910C1-EUX composition
  net: stmmac: enable timestamp snapshot for required PTP packets in dwmac v5.10a
  net/mlx5: Fix crash upon suspend/resume
  l2tp: do not use inet_hash()/inet_unhash()
  l2tp: add sk_family checks to l2tp_validate_socket
  devinet: fix memleak in inetdev_init()
  ANDROID: GKI: Update ABI after scsi/ufs changes
  FROMLIST: Documentation:sysfs-ufs: Add WriteBooster documentation
  FROMGIT: scsi: ufs-qcom: Configure write booster type
  FROMGIT: scsi: ufs: sysfs: Add sysfs entries for write booster
  BACKPORT: FROMGIT: scsi: ufs: Add write booster feature support
  ANDROID: ABI/Whitelist: update symbols of unisoc whitelist
  BACKPORT: FROMGIT: scsi: ufs: Remove unnecessary memset for dev_info
  ANDROID: staging: ion: Fix potential memory corruption
  ANDROID: staging: ion: optimize cache operation for non-cached buffer
  ANDROID: staging: ion: Skip sync if not mapped
  ANDROID: staging: ion: use dma_[un]map_sg_attrs
  ANDROID: arch: arm64: vdso: export the symbols for time()
  ANDROID: dm-bow: Add block_size option
  ANDROID: GKI: remove squashfs-needed symbols from exported abi
  ANDROID: GKI: remove erofs symbols from exported abi
  ANDROID: GKI: enable CONFIG_EROFS_FS=y
  ANDROID: scs: fix recursive spinlock in scs_check_usage
  f2fs: attach IO flags to the missing cases
  f2fs: add node_io_flag for bio flags likewise data_io_flag
  f2fs: remove unused parameter of f2fs_put_rpages_mapping()
  f2fs: handle readonly filesystem in f2fs_ioc_shutdown()
  f2fs: avoid utf8_strncasecmp() with unstable name
  f2fs: don't return vmalloc() memory from f2fs_kmalloc()
  ANDROID: GKI: set CONFIG_BLK_DEV_LOOP_MIN_COUNT to 16
  ANDROID: Incremental fs: Remove dependency on PKCS7_MESSAGE_PARSER
  ANDROID: Incremental fs: Cache successful hash calculations
  ANDROID: Incremental fs: Fix four error-path bugs
  f2fs: fix retry logic in f2fs_write_cache_pages()
  f2fs: fix wrong discard space
  f2fs: compress: don't compress any datas after cp stop
  f2fs: remove unneeded return value of __insert_discard_tree()
  f2fs: fix wrong value of tracepoint parameter
  f2fs: protect new segment allocation in expand_inode_data
  f2fs: code cleanup by removing ifdef macro surrounding
  writeback: Avoid skipping inode writeback
  f2fs: avoid inifinite loop to wait for flushing node pages at cp_error
  f2fs: compress: fix zstd data corruption
  f2fs: add compressed/gc data read IO stat
  f2fs: fix potential use-after-free issue
  f2fs: compress: don't handle non-compressed data in workqueue
  f2fs: remove redundant assignment to variable err
  f2fs: refactor resize_fs to avoid meta updates in progress
  f2fs: use round_up to enhance calculation
  f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS
  f2fs: Avoid double lock for cp_rwsem during checkpoint
  f2fs: report delalloc reserve as non-free in statfs for project quota
  f2fs: Fix wrong stub helper update_sit_info
  f2fs: compress: let lz4 compressor handle output buffer budget properly
  f2fs: remove blk_plugging in block_operations
  f2fs: introduce F2FS_IOC_RELEASE_COMPRESS_BLOCKS
  f2fs: shrink spinlock coverage
  f2fs: correctly fix the parent inode number during fsync()
  f2fs: compress: support lzo-rle compress algorithm
  f2fs: introduce mempool for {,de}compress intermediate page allocation
  f2fs: introduce f2fs_bmap_compress()
  f2fs: support fiemap on compressed inode
  f2fs: support partial truncation on compressed inode
  f2fs: remove redundant compress inode check
  f2fs: use strcmp() in parse_options()
  f2fs: Use the correct style for SPDX License Identifier

Conflicts:
	Documentation/devicetree/bindings
	Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
	abi_gki_aarch64_qcom_whitelist
	arch/x86/configs/gki_defconfig
	build.config.common
	drivers/hwtracing/coresight/coresight-tmc-etf.c
	drivers/mmc/host/sdhci-msm.c
	drivers/pinctrl/qcom/Kconfig
	drivers/pinctrl/qcom/pinctrl-msm.c
	drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
	drivers/scsi/ufs/ufs-qcom.c
	drivers/scsi/ufs/ufs-sysfs.c
	drivers/scsi/ufs/ufs.h
	drivers/scsi/ufs/ufs_quirks.h
	drivers/scsi/ufs/ufshcd.c
	drivers/scsi/ufs/ufshcd.h
	drivers/usb/dwc3/gadget.c
	drivers/usb/host/xhci-plat.c
	drivers/usb/typec/ucsi/ucsi.c
	include/linux/usb/composite.h
	include/linux/usb/gadget.h
	init/Kconfig.gki
	net/wireless/nl80211.c
	scripts/headers_install.sh

Change-Id: Iadbe19b28a1d459bc7378e0b9060219a92a408b6
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2020-07-20 19:22:16 -07:00
Jann Horn
2e256dd5b0 exit: Move preemption fixup up, move blocking operations down
[ Upstream commit 586b58cac8b4683eb58a1446fbc399de18974e40 ]

With CONFIG_DEBUG_ATOMIC_SLEEP=y and CONFIG_CGROUPS=y, kernel oopses in
non-preemptible context look untidy; after the main oops, the kernel prints
a "sleeping function called from invalid context" report because
exit_signals() -> cgroup_threadgroup_change_begin() -> percpu_down_read()
can sleep, and that happens before the preempt_count_set(PREEMPT_ENABLED)
fixup.

It looks like the same thing applies to profile_task_exit() and
kcov_task_exit().

Fix it by moving the preemption fixup up and the calls to
profile_task_exit() and kcov_task_exit() down.

Fixes: 1dc0fffc48 ("sched/core: Robustify preemption leak checks")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200305220657.46800-1-jannh@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-22 09:31:01 +02:00
Minchan Kim
805706982d pid: move pidfd_get_pid() to pid.c
process_madvise syscall needs pidfd_get_pid function to translate pidfd to
pid so this patch move the function to kernel/pid.c.

Change-Id: Ie3bfdb29b3fb73a444481739b705ac7eb762d6c2
Link: http://lkml.kernel.org/r/20200302193630.68771-5-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Suggested-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jann Horn <jannh@google.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Daniel Colascione <dancol@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Dias <joaodias@google.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oleksandr Natalenko <oleksandr@redhat.com>
Cc: Sandeep Patil <sspatil@google.com>
Cc: SeongJae Park <sj38.park@gmail.com>
Cc: SeongJae Park <sjpark@amazon.de>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Sonny Rao <sonnyrao@google.com>
Cc: Tim Murray <timmurray@google.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: <linux-man@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Git-Commit: e54e957dea26d6795d51842a785b8765efff396b
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
2020-06-18 18:01:49 +05:30
Stephen Dickey
b2cc9bc552 sched: Improve the scheduler
This change is for general scheduler improvements.

Change-Id: I6dc8fd228ca34fd36cdbaf58c42812bae3dcff7d
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Stephen Dickey <dickey@codeaurora.org>
2020-06-08 23:52:52 -07:00
Blagovest Kolenichev
2b9f49ee80 Merge android-5.4.8 (de197c5) into msm-5.4
* refs/heads/tmp-de197c5:
  Linux 5.4.8
  mm/hugetlbfs: fix for_each_hstate() loop in init_hugetlbfs_fs()
  mmc: sdhci-of-esdhc: re-implement erratum A-009204 workaround
  mmc: sdhci-of-esdhc: fix up erratum A-008171 workaround
  vhost/vsock: accept only packets with the right dst_cid
  net: ena: fix napi handler misbehavior when the napi budget is zero
  net: phylink: fix interface passed to mac_link_up
  ipv6/addrconf: only check invalid header values when NETLINK_F_STRICT_CHK is set
  bnxt: apply computed clamp value for coalece parameter
  gtp: do not allow adding duplicate tid and ms_addr pdp context
  gtp: fix an use-after-free in ipv4_pdp_find()
  hv_netvsc: Fix tx_table init in rndis_set_subchannel()
  tcp/dccp: fix possible race __inet_lookup_established()
  tcp: do not send empty skb from tcp_write_xmit()
  bonding: fix active-backup transition after link failure
  gtp: avoid zero size hashtable
  gtp: fix wrong condition in gtp_genl_dump_pdp()
  net: marvell: mvpp2: phylink requires the link interrupt
  net: dsa: sja1105: Reconcile the meaning of TPID and TPID2 for E/T and P/Q/R/S
  net/dst: do not confirm neighbor for vxlan and geneve pmtu update
  sit: do not confirm neighbor when do pmtu update
  vti: do not confirm neighbor when do pmtu update
  tunnel: do not confirm neighbor when do pmtu update
  net/dst: add new function skb_dst_update_pmtu_no_confirm
  gtp: do not confirm neighbor when do pmtu update
  ip6_gre: do not confirm neighbor when do pmtu update
  net: add bool confirm_neigh parameter for dst_ops.update_pmtu
  mlxsw: spectrum: Use dedicated policer for VRRP packets
  mlxsw: spectrum_router: Skip loopback RIFs during MAC validation
  bnxt_en: Add missing devlink health reporters for VFs.
  bnxt_en: Fix the logic that creates the health reporters.
  bnxt_en: Remove unnecessary NULL checks for fw_health
  bnxt_en: Fix bp->fw_health allocation and free logic.
  bnxt_en: Return error if FW returns more data than dump length
  bnxt_en: Free context memory in the open path if firmware has been reset.
  bnxt_en: Fix MSIX request logic for RDMA driver.
  udp: fix integer overflow while computing available space in sk_rcvbuf
  tcp: Fix highest_sack and highest_sack_seq
  ptp: fix the race between the release of ptp_clock and cdev
  net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs
  net_sched: sch_fq: properly set sk->sk_pacing_status
  net/sched: add delete_empty() to filters and use it in cls_flower
  net/sched: act_mirred: Pull mac prior redir to non mac_header_xmit device
  net: phy: aquantia: add suspend / resume ops for AQR105
  net/mlxfw: Fix out-of-memory error in mfa2 flash burning
  net: dsa: bcm_sf2: Fix IP fragment location and behavior
  cxgb4/cxgb4vf: fix flow control display for auto negotiation
  xfs: fix mount failure crash on invalid iclog memory access
  drm: limit to INT_MAX in create_blob ioctl
  uaccess: disallow > INT_MAX copy sizes
  tomoyo: Don't use nifty names on sockets.
  hrtimer: Annotate lockless access to timer->state
  net: icmp: fix data-race in cmp_global_allow()
  net: add a READ_ONCE() in skb_peek_tail()
  inetpeer: fix data-race in inet_putpeer / inet_putpeer
  netfilter: bridge: make sure to pull arp header in br_nf_forward_arp()
  net/smc: add fallback check to connect()
  powerpc: Fix __clear_user() with KUAP enabled
  6pack,mkiss: fix possible deadlock
  netfilter: ebtables: compat: reject all padding in matches/watchers
  Revert "iwlwifi: assign directly to iwl_trans->cfg in QuZ detection"
  md: make sure desc_nr less than MD_SB_DISKS
  sctp: fix err handling of stream initialization
  Revert "powerpc/vcpu: Assume dedicated processors as non-preempt"
  userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
  kernel: sysctl: make drop_caches write-only
  mm/hugetlbfs: fix error handling when setting up mounts
  selftests: vm: add fragment CONFIG_TEST_VMALLOC
  s390: disable preemption when switching to nodat stack with CALL_ON_STACK
  mailbox: imx: Fix Tx doorbell shutdown path
  ocfs2: fix passing zero to 'PTR_ERR' warning
  s390/cpum_sf: Check for SDBT and SDB consistency
  s390/unwind: filter out unreliable bogus %r14
  libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
  mailbox: imx: Clear the right interrupts at shutdown
  s390/zcrypt: handle new reply code FILTERED_BY_HYPERVISOR
  perf regs: Make perf_reg_name() return "unknown" instead of NULL
  perf script: Fix brstackinsn for AUXTRACE
  perf diff: Use llabs() with 64-bit values
  cifs: move cifsFileInfo_put logic into a work-queue
  cdrom: respect device capabilities during opening action
  of: unittest: fix memory leak in attach_node_and_children
  io_uring: io_allocate_scq_urings() should return a sane state
  um: virtio: Keep reading on -EAGAIN
  cifs: Fix use-after-free bug in cifs_reconnect()
  powerpc: Don't add -mabi= flags when building with Clang
  scripts/kallsyms: fix definitely-lost memory leak
  drm/amdgpu: Call find_vma under mmap_sem
  apparmor: fix unsigned len comparison with less than zero
  Drivers: hv: vmbus: Fix crash handler reset of Hyper-V synic
  tools/power/x86/intel-speed-select: Ignore missing config level
  gpio: lynxpoint: Setup correct IRQ handlers
  gpio: mpc8xxx: Don't overwrite default irq_set_type callback
  platform/x86: intel_pmc_core: Add Comet Lake (CML) platform support to intel_pmc_core driver
  platform/x86: intel_pmc_core: Fix the SoC naming inconsistency
  gpio/mpc8xxx: fix qoriq GPIO reading
  habanalabs: skip VA block list update in reset flow
  f2fs: Fix deadlock in f2fs_gc() context during atomic files handling
  scsi: target: iscsi: Wait for all commands to finish before freeing a session
  scsi: iscsi: Don't send data to unbound connection
  scsi: ufs: Fix up auto hibern8 enablement
  scsi: target: core: Release SPC-2 reservations when closing a session
  scsi: NCR5380: Add disconnect_mask module parameter
  scsi: scsi_debug: num_tgts must be >= 0
  scsi: ufs: Fix error handing during hibern8 enter
  scsi: pm80xx: Fix for SATA device discovery
  powerpc/fixmap: Use __fix_to_virt() instead of fix_to_virt()
  watchdog: Fix the race between the release of watchdog_core_data and cdev
  watchdog: prevent deferral of watchdogd wakeup on RT
  watchdog: imx7ulp: Fix reboot hang
  HID: rmi: Check that the RMI_STARTED bit is set before unregistering the RMI transport device
  HID: Improve Windows Precision Touchpad detection.
  libnvdimm/btt: fix variable 'rc' set but not used
  ARM: 8937/1: spectre-v2: remove Brahma-B53 from hardening
  HID: i2c-hid: fix no irq after reset on raydium 3118
  HID: logitech-hidpp: Silence intermittent get_battery_capacity errors
  dt-bindings: Improve validation build error handling
  HID: quirks: Add quirk for HP MSU1465 PIXART OEM mouse
  bcache: at least try to shrink 1 node in bch_mca_scan()
  clk: pxa: fix one of the pxa RTC clocks
  scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE
  powerpc/book3s/mm: Update Oops message to print the correct translation in use
  powerpc/eeh: differentiate duplicate detection message
  powerpc/security: Fix wrong message when RFI Flush is disable
  PCI: rpaphp: Correctly match ibm, my-drc-index to drc-name when using drc-info
  PCI: rpaphp: Annotate and correctly byte swap DRC properties
  PCI: rpaphp: Don't rely on firmware feature to imply drc-info support
  powerpc/pseries/cmm: Implement release() function for sysfs device
  scsi: ufs: fix potential bug which ends in system hang
  PCI: rpaphp: Fix up pointer to first drc-info entry
  scsi: zorro_esp: Limit DMA transfers to 65536 bytes (except on Fastlane)
  scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences
  Input: ili210x - handle errors from input_mt_init_slots()
  iomap: fix return value of iomap_dio_bio_actor on 32bit systems
  i2c: stm32f7: fix & reorder remove & probe error handling
  iommu/arm-smmu-v3: Don't display an error when IRQ lines are missing
  fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long
  dma-direct: check for overflows on 32 bit DMA addresses
  irqchip: ingenic: Error out if IRQ domain creation failed
  irqchip/irq-bcm7038-l1: Enable parent IRQ if necessary
  clk: clk-gpio: propagate rate change to parent
  clk: qcom: Allow constant ratio freq tables for rcg
  clk: qcom: smd: Add missing pnoc clock
  f2fs: fix to update dir's i_pino during cross_rename
  scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow
  scsi: lpfc: Fix unexpected error messages during RSCN handling
  scsi: tracing: Fix handling of TRANSFER LENGTH == 0 for READ(6) and WRITE(6)
  jbd2: Fix statistics for the number of logged blocks
  ext4: iomap that extends beyond EOF should be marked dirty
  ext4: update direct I/O read lock pattern for IOCB_NOWAIT
  powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning
  powerpc/security/book3s64: Report L1TF status in sysfs
  selftests/powerpc: Skip tm-signal-sigreturn-nt if TM not available
  dtc: Use pkg-config to locate libyaml
  clocksource/drivers/timer-of: Use unique device name instead of timer
  clocksource/drivers/asm9260: Add a check for of_clk_get
  leds: trigger: netdev: fix handling on interface rename
  leds: an30259a: add a check for devm_regmap_init_i2c
  leds: lm3692x: Handle failure to probe the regulator
  dmaengine: fsl-qdma: Handle invalid qdma-queue0 IRQ
  dma-mapping: fix handling of dma-ranges for reserved memory (again)
  dma-mapping: Add vmap checks to dma_map_single()
  dma-debug: add a schedule point in debug_dma_dump_mappings()
  powerpc/tools: Don't quote $objdump in scripts
  selftests/powerpc: Fixup clobbers for TM tests
  Input: st1232 - do not reset the chip too early
  powerpc/pseries: Don't fail hash page table insert for bolted mapping
  powerpc/pseries: Mark accumulate_stolen_time() as notrace
  scsi: hisi_sas: Delete the debugfs folder of hisi_sas when the probe fails
  scsi: hisi_sas: Replace in_softirq() check in hisi_sas_task_exec()
  scsi: csiostor: Don't enable IRQs too early
  scsi: lpfc: Fix SLI3 hba in loop mode not discovering devices
  scsi: lpfc: Fix hardlockup in lpfc_abort_handler
  scsi: target: compare full CHAP_A Algorithm strings
  dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_reset
  iommu/tegra-smmu: Fix page tables in > 4 GiB memory
  iommu: rockchip: Free domain on .domain_free
  platform/x86: peaq-wmi: switch to using polled mode of input devices
  tools/power/x86/intel-speed-select: Remove warning for unused result
  powerpc/papr_scm: Fix an off-by-one check in papr_scm_meta_{get, set}
  f2fs: fix to update time in lazytime mode
  Input: atmel_mxt_ts - disable IRQ across suspend
  scsi: lpfc: Fix list corruption in lpfc_sli_get_iocbq
  gpio: mxc: Only get the second IRQ when there is more than one IRQ
  scsi: mpt3sas: Reject NVMe Encap cmnds to unsupported HBA
  scsi: lpfc: Fix locking on mailbox command completion
  scsi: mpt3sas: Fix clear pending bit in ioctl status
  scsi: lpfc: Fix discovery failures when target device connectivity bounces
  scsi: lpfc: Fix spinlock_irq issues in lpfc_els_flush_cmd()
  Revert "MIPS: futex: Emit Loongson3 sync workarounds within asm"
  Revert "MIPS: futex: Restore \n after sync instructions"
  UPSTREAM: exit: panic before exit_mm() on global init exit
  ANDROID: serdev: Fix platform device support

Conflicts:
	Documentation/devicetree/bindings
	Documentation/devicetree/bindings/Makefile
	kernel/time/hrtimer.c

Change-Id: I271162549a080e2b747572f5c87cfd8fa111da51
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2020-03-06 19:19:20 -08:00
Blagovest Kolenichev
e79e029826 Merge android-5.4.5 (9cdc723) into msm-5.4
* refs/heads/tmp-9cdc723:
  Revert "usb: dwc3: gadget: Fix logical condition"
  Revert "FROMLIST: scsi: ufs-qcom: Adjust bus bandwidth voting and unvoting"
  Linux 5.4.5
  r8169: add missing RX enabling for WoL on RTL8125
  net: mscc: ocelot: unregister the PTP clock on deinit
  ionic: keep users rss hash across lif reset
  xdp: obtain the mem_id mutex before trying to remove an entry.
  page_pool: do not release pool until inflight == 0.
  net/mlx5e: ethtool, Fix analysis of speed setting
  net/mlx5e: Fix translation of link mode into speed
  net/mlx5e: Fix freeing flow with kfree() and not kvfree()
  net/mlx5e: Fix SFF 8472 eeprom length
  act_ct: support asymmetric conntrack
  net/mlx5e: Fix TXQ indices to be sequential
  net: Fixed updating of ethertype in skb_mpls_push()
  hsr: fix a NULL pointer dereference in hsr_dev_xmit()
  Fixed updating of ethertype in function skb_mpls_pop
  gre: refetch erspan header from skb->data after pskb_may_pull()
  cls_flower: Fix the behavior using port ranges with hw-offload
  net: sched: allow indirect blocks to bind to clsact in TC
  net: core: rename indirect block ingress cb function
  tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE()
  tcp: tighten acceptance of ACKs not matching a child socket
  tcp: fix rejected syncookies due to stale timestamps
  net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
  net: ipv6: add net argument to ip6_dst_lookup_flow
  net/mlx5e: Query global pause state before setting prio2buffer
  tipc: fix ordering of tipc module init and exit routine
  tcp: md5: fix potential overestimation of TCP option space
  openvswitch: support asymmetric conntrack
  net/tls: Fix return values to avoid ENOTSUPP
  net: thunderx: start phy before starting autonegotiation
  net_sched: validate TCA_KIND attribute in tc_chain_tmplt_add()
  net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
  net: ethernet: ti: cpsw: fix extra rx interrupt
  net: dsa: fix flow dissection on Tx path
  net: bridge: deny dev_set_mac_address() when unregistering
  mqprio: Fix out-of-bounds access in mqprio_dump
  inet: protect against too small mtu values.
  ANDROID: add initial ABI whitelist for android-5.4
  ANDROID: abi update for 5.4.4
  ANDROID: mm: Throttle rss_stat tracepoint
  FROMLIST: vsprintf: Inline call to ptr_to_hashval
  UPSTREAM: rss_stat: Add support to detect RSS updates of external mm
  UPSTREAM: mm: emit tracepoint when RSS changes
  Linux 5.4.4
  EDAC/ghes: Do not warn when incrementing refcount on 0
  r8169: fix rtl_hw_jumbo_disable for RTL8168evl
  workqueue: Fix missing kfree(rescuer) in destroy_workqueue()
  blk-mq: make sure that line break can be printed
  ext4: fix leak of quota reservations
  ext4: fix a bug in ext4_wait_for_tail_page_commit
  splice: only read in as much information as there is pipe buffer space
  rtc: disable uie before setting time and enable after
  USB: dummy-hcd: increase max number of devices to 32
  powerpc: Define arch_is_kernel_initmem_freed() for lockdep
  mm/shmem.c: cast the type of unmap_start to u64
  s390/kaslr: store KASLR offset for early dumps
  s390/smp,vdso: fix ASCE handling
  firmware: qcom: scm: Ensure 'a0' status code is treated as signed
  ext4: work around deleting a file with i_nlink == 0 safely
  mm: memcg/slab: wait for !root kmem_cache refcnt killing on root kmem_cache destruction
  mfd: rk808: Fix RK818 ID template
  mm, memfd: fix COW issue on MAP_PRIVATE and F_SEAL_FUTURE_WRITE mappings
  powerpc: Fix vDSO clock_getres()
  powerpc: Avoid clang warnings around setjmp and longjmp
  omap: pdata-quirks: remove openpandora quirks for mmc3 and wl1251
  omap: pdata-quirks: revert pandora specific gpiod additions
  iio: ad7949: fix channels mixups
  iio: ad7949: kill pointless "readback"-handling code
  Revert "scsi: qla2xxx: Fix memory leak when sending I/O fails"
  scsi: qla2xxx: Fix a dma_pool_free() call
  scsi: qla2xxx: Fix SRB leak on switch command timeout
  reiserfs: fix extended attributes on the root directory
  ext4: Fix credit estimate for final inode freeing
  quota: fix livelock in dquot_writeback_dquots
  seccomp: avoid overflow in implicit constant conversion
  ext2: check err when partial != NULL
  quota: Check that quota is not dirty before release
  video/hdmi: Fix AVI bar unpack
  powerpc/xive: Skip ioremap() of ESB pages for LSI interrupts
  powerpc: Allow flush_icache_range to work across ranges >4GB
  powerpc/xive: Prevent page fault issues in the machine crash handler
  powerpc: Allow 64bit VDSO __kernel_sync_dicache to work across ranges >4GB
  coresight: Serialize enabling/disabling a link device.
  stm class: Lose the protocol driver when dropping its reference
  ppdev: fix PPGETTIME/PPSETTIME ioctls
  RDMA/core: Fix ib_dma_max_seg_size()
  ARM: dts: omap3-tao3530: Fix incorrect MMC card detection GPIO polarity
  mmc: host: omap_hsmmc: add code for special init of wl1251 to get rid of pandora_wl1251_init_card
  pinctrl: samsung: Fix device node refcount leaks in S3C64xx wakeup controller init
  pinctrl: samsung: Fix device node refcount leaks in init code
  pinctrl: samsung: Fix device node refcount leaks in S3C24xx wakeup controller init
  pinctrl: samsung: Fix device node refcount leaks in Exynos wakeup controller init
  pinctrl: samsung: Add of_node_put() before return in error path
  pinctrl: armada-37xx: Fix irq mask access in armada_37xx_irq_set_type()
  pinctrl: rza2: Fix gpio name typos
  ACPI: PM: Avoid attaching ACPI PM domain to certain devices
  ACPI: EC: Rework flushing of pending work
  ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()
  ACPI: OSL: only free map once in osl.c
  ACPI / hotplug / PCI: Allocate resources directly under the non-hotplug bridge
  ACPI: LPSS: Add dmi quirk for skipping _DEP check for some device-links
  ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links
  ACPI: LPSS: Add LNXVIDEO -> BYT I2C7 to lpss_device_links
  ACPI / utils: Move acpi_dev_get_first_match_dev() under CONFIG_ACPI
  ALSA: hda/realtek - Line-out jack doesn't work on a Dell AIO
  ALSA: oxfw: fix return value in error path of isochronous resources reservation
  ALSA: fireface: fix return value in error path of isochronous resources reservation
  cpufreq: powernv: fix stack bloat and hard limit on number of CPUs
  PM / devfreq: Lock devfreq in trans_stat_show
  intel_th: pci: Add Tiger Lake CPU support
  intel_th: pci: Add Ice Lake CPU support
  intel_th: Fix a double put_device() in error path
  powerpc/perf: Disable trace_imc pmu
  drm/panfrost: Open/close the perfcnt BO
  perf tests: Fix out of bounds memory access
  erofs: zero out when listxattr is called with no xattr
  cpuidle: use first valid target residency as poll time
  cpuidle: teo: Fix "early hits" handling for disabled idle states
  cpuidle: teo: Consider hits and misses metrics of disabled states
  cpuidle: teo: Rename local variable in teo_select()
  cpuidle: teo: Ignore disabled idle states that are too deep
  cpuidle: Do not unset the driver if it is there already
  media: cec.h: CEC_OP_REC_FLAG_ values were swapped
  media: radio: wl1273: fix interrupt masking on release
  media: bdisp: fix memleak on release
  media: vimc: sen: remove unused kthread_sen field
  media: hantro: Fix picture order count table enable
  media: hantro: Fix motion vectors usage condition
  media: hantro: Fix s_fmt for dynamic resolution changes
  s390/mm: properly clear _PAGE_NOEXEC bit when it is not supported
  ar5523: check NULL before memcpy() in ar5523_cmd()
  wil6210: check len before memcpy() calls
  cgroup: pids: use atomic64_t for pids->limit
  blk-mq: avoid sysfs buffer overflow with too many CPU cores
  md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
  ASoC: fsl_audmix: Add spin lock to protect tdms
  ASoC: Jack: Fix NULL pointer dereference in snd_soc_jack_report
  ASoC: rt5645: Fixed typo for buddy jack support.
  ASoC: rt5645: Fixed buddy jack support.
  workqueue: Fix pwq ref leak in rescuer_thread()
  workqueue: Fix spurious sanity check failures in destroy_workqueue()
  dm zoned: reduce overhead of backing device checks
  dm writecache: handle REQ_FUA
  hwrng: omap - Fix RNG wait loop timeout
  ovl: relax WARN_ON() on rename to self
  ovl: fix corner case of non-unique st_dev;st_ino
  ovl: fix lookup failure on multi lower squashfs
  lib: raid6: fix awk build warnings
  rtlwifi: rtl8192de: Fix missing enable interrupt flag
  rtlwifi: rtl8192de: Fix missing callback that tests for hw release of buffer
  rtlwifi: rtl8192de: Fix missing code to retrieve RX buffer address
  btrfs: record all roots for rename exchange on a subvol
  Btrfs: send, skip backreference walking for extents with many references
  btrfs: Remove btrfs_bio::flags member
  btrfs: Avoid getting stuck during cyclic writebacks
  Btrfs: fix negative subv_writers counter and data space leak after buffered write
  Btrfs: fix metadata space leak on fixup worker failure to set range as delalloc
  btrfs: use refcount_inc_not_zero in kill_all_nodes
  btrfs: use btrfs_block_group_cache_done in update_block_group
  btrfs: check page->mapping when loading free space cache
  iwlwifi: pcie: fix support for transmitting SKBs with fraglist
  usb: typec: fix use after free in typec_register_port()
  phy: renesas: rcar-gen3-usb2: Fix sysfs interface of "role"
  usb: dwc3: ep0: Clear started flag on completion
  usb: dwc3: gadget: Clear started flag for non-IOC
  usb: dwc3: gadget: Fix logical condition
  usb: dwc3: pci: add ID for the Intel Comet Lake -H variant
  virtio-balloon: fix managed page counts when migrating pages between zones
  virt_wifi: fix use-after-free in virt_wifi_newlink()
  mtd: rawnand: Change calculating of position page containing BBM
  mtd: spear_smi: Fix Write Burst mode
  brcmfmac: disable PCIe interrupts before bus reset
  EDAC/altera: Use fast register IO for S10 IRQs
  tpm: Switch to platform_get_irq_optional()
  tpm: add check after commands attribs tab allocation
  usb: mon: Fix a deadlock in usbmon between mmap and read
  usb: core: urb: fix URB structure initialization function
  USB: adutux: fix interface sanity check
  usb: roles: fix a potential use after free
  USB: serial: io_edgeport: fix epic endpoint lookup
  USB: idmouse: fix interface sanity checks
  USB: atm: ueagle-atm: add missing endpoint check
  iio: adc: ad7124: Enable internal reference
  iio: adc: ad7606: fix reading unnecessary data from device
  iio: imu: inv_mpu6050: fix temperature reporting using bad unit
  iio: humidity: hdc100x: fix IIO_HUMIDITYRELATIVE channel reporting
  iio: adis16480: Fix scales factors
  iio: imu: st_lsm6dsx: fix ODR check in st_lsm6dsx_write_raw
  iio: adis16480: Add debugfs_reg_access entry
  ARM: dts: pandora-common: define wl1251 as child node of mmc3
  usb: common: usb-conn-gpio: Don't log an error on probe deferral
  interconnect: qcom: qcs404: Walk the list safely on node removal
  interconnect: qcom: sdm845: Walk the list safely on node removal
  xhci: make sure interrupts are restored to correct state
  xhci: handle some XHCI_TRUST_TX_LENGTH quirks cases as default behaviour.
  xhci: Increase STS_HALT timeout in xhci_suspend()
  xhci: fix USB3 device initiated resume race with roothub autosuspend
  xhci: Fix memory leak in xhci_add_in_port()
  usb: xhci: only set D3hot for pci device
  staging: gigaset: add endpoint-type sanity check
  staging: gigaset: fix illegal free on probe errors
  staging: gigaset: fix general protection fault on probe
  staging: vchiq: call unregister_chrdev_region() when driver registration fails
  staging: rtl8712: fix interface sanity check
  staging: rtl8188eu: fix interface sanity check
  staging: exfat: fix multiple definition error of `rename_file'
  binder: fix incorrect calculation for num_valid
  usb: host: xhci-tegra: Correct phy enable sequence
  usb: Allow USB device to be warm reset in suspended state
  USB: documentation: flags on usb-storage versus UAS
  USB: uas: heed CAPACITY_HEURISTICS
  USB: uas: honor flag to avoid CAPACITY16
  media: venus: remove invalid compat_ioctl32 handler
  ceph: fix compat_ioctl for ceph_dir_operations
  compat_ioctl: add compat_ptr_ioctl()
  scsi: qla2xxx: Fix memory leak when sending I/O fails
  scsi: qla2xxx: Fix double scsi_done for abort path
  scsi: qla2xxx: Fix driver unload hang
  scsi: qla2xxx: Do command completion on abort timeout
  scsi: zfcp: trace channel log even for FCP command responses
  scsi: lpfc: Fix bad ndlp ptr in xri aborted handling
  Revert "nvme: Add quirk for Kingston NVME SSD running FW E8FK11.T"
  nvme: Namepace identification descriptor list is optional
  usb: gadget: pch_udc: fix use after free
  usb: gadget: configfs: Fix missing spin_lock_init()
  BACKPORT: FROMLIST: scsi: ufs: Export query request interfaces
  ANDROID: update abi with unbindable_ports sysctl
  BACKPORT: FROMLIST: net: introduce ip_local_unbindable_ports sysctl
  ANDROID: update abi for 5.4.3 merge
  ANDROID: update abi_gki_aarch64.xml for ion, drm changes
  ANDROID: drivers: gpu: drm: export drm_mode_convert_umode symbol
  ANDROID: ion: flush cache before exporting non-cached buffers
  Linux 5.4.3
  kselftest: Fix NULL INSTALL_PATH for TARGETS runlist
  perf script: Fix invalid LBR/binary mismatch error
  EDAC/ghes: Fix locking and memory barrier issues
  watchdog: aspeed: Fix clock behaviour for ast2600
  drm/mcde: Fix an error handling path in 'mcde_probe()'
  md/raid0: Fix an error message in raid0_make_request()
  cpufreq: imx-cpufreq-dt: Correct i.MX8MN's default speed grade value
  ALSA: hda - Fix pending unsol events at shutdown
  KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)
  binder: Handle start==NULL in binder_update_page_range()
  binder: Prevent repeated use of ->mmap() via NULL mapping
  binder: Fix race between mmap() and binder_alloc_print_pages()
  Revert "serial/8250: Add support for NI-Serial PXI/PXIe+485 devices"
  vcs: prevent write access to vcsu devices
  thermal: Fix deadlock in thermal thermal_zone_device_check
  iomap: Fix pipe page leakage during splicing
  bdev: Refresh bdev size for disks without partitioning
  bdev: Factor out bdev revalidation into a common helper
  rfkill: allocate static minor
  RDMA/qib: Validate ->show()/store() callbacks before calling them
  can: ucan: fix non-atomic allocation in completion handler
  spi: Fix NULL pointer when setting SPI_CS_HIGH for GPIO CS
  spi: Fix SPI_CS_HIGH setting when using native and GPIO CS
  spi: atmel: Fix CS high support
  spi: stm32-qspi: Fix kernel oops when unbinding driver
  spi: spi-fsl-qspi: Clear TDH bits in FLSHCR register
  crypto: user - fix memory leak in crypto_reportstat
  crypto: user - fix memory leak in crypto_report
  crypto: ecdh - fix big endian bug in ECC library
  crypto: ccp - fix uninitialized list head
  crypto: geode-aes - switch to skcipher for cbc(aes) fallback
  crypto: af_alg - cast ki_complete ternary op to int
  crypto: atmel-aes - Fix IV handling when req->nbytes < ivsize
  crypto: crypto4xx - fix double-free in crypto4xx_destroy_sdr
  KVM: x86: Grab KVM's srcu lock when setting nested state
  KVM: x86: Remove a spurious export of a static function
  KVM: x86: fix presentation of TSX feature in ARCH_CAPABILITIES
  KVM: x86: do not modify masked bits of shared MSRs
  KVM: arm/arm64: vgic: Don't rely on the wrong pending table
  KVM: nVMX: Always write vmcs02.GUEST_CR3 during nested VM-Enter
  KVM: PPC: Book3S HV: XIVE: Set kvm->arch.xive when VPs are allocated
  KVM: PPC: Book3S HV: XIVE: Fix potential page leak on error path
  KVM: PPC: Book3S HV: XIVE: Free previous EQ page when setting up a new one
  arm64: dts: exynos: Revert "Remove unneeded address space mapping for soc node"
  arm64: Validate tagged addresses in access_ok() called from kernel threads
  drm/i810: Prevent underflow in ioctl
  drm: damage_helper: Fix race checking plane->state->fb
  drm/msm: fix memleak on release
  jbd2: Fix possible overflow in jbd2_log_space_left()
  kernfs: fix ino wrap-around detection
  nfsd: restore NFSv3 ACL support
  nfsd: Ensure CLONE persists data and metadata changes to the target file
  can: slcan: Fix use-after-free Read in slcan_open
  tty: vt: keyboard: reject invalid keycodes
  CIFS: Fix SMB2 oplock break processing
  CIFS: Fix NULL-pointer dereference in smb2_push_mandatory_locks
  x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect
  x86/mm/32: Sync only to VMALLOC_END in vmalloc_sync_all()
  media: rc: mark input device as pointing stick
  Input: Fix memory leak in psxpad_spi_probe
  coresight: etm4x: Fix input validation for sysfs.
  Input: goodix - add upside-down quirk for Teclast X89 tablet
  Input: synaptics-rmi4 - don't increment rmiaddr for SMBus transfers
  Input: synaptics-rmi4 - re-enable IRQs in f34v7_do_reflash
  Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus
  soc: mediatek: cmdq: fixup wrong input order of write api
  ALSA: hda: Modify stream stripe mask only when needed
  ALSA: hda - Add mute led support for HP ProBook 645 G4
  ALSA: pcm: oss: Avoid potential buffer overflows
  ALSA: hda/realtek - Fix inverted bass GPIO pin on Acer 8951G
  ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236
  ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop
  ALSA: hda/realtek - Enable internal speaker of ASUS UX431FLC
  SUNRPC: Avoid RPC delays when exiting suspend
  io_uring: ensure req->submit is copied when req is deferred
  io_uring: fix missing kmap() declaration on powerpc
  fuse: verify attributes
  fuse: verify write return
  fuse: verify nlink
  fuse: fix leak of fuse_io_priv
  io_uring: transform send/recvmsg() -ERESTARTSYS to -EINTR
  io_uring: fix dead-hung for non-iter fixed rw
  mwifiex: Re-work support for SDIO HW reset
  serial: ifx6x60: add missed pm_runtime_disable
  serial: 8250_dw: Avoid double error messaging when IRQ absent
  serial: stm32: fix clearing interrupt error flags
  serial: serial_core: Perform NULL checks for break_ctl ops
  serial: pl011: Fix DMA ->flush_buffer()
  tty: serial: msm_serial: Fix flow control
  tty: serial: fsl_lpuart: use the sg count from dma_map_sg
  serial: 8250-mtk: Use platform_get_irq_optional() for optional irq
  usb: gadget: u_serial: add missing port entry locking
  staging/octeon: Use stubs for MIPS && !CAVIUM_OCTEON_SOC
  mailbox: tegra: Fix superfluous IRQ error message
  time: Zero the upper 32-bits in __kernel_timespec on 32-bit
  lp: fix sparc64 LPSETTIMEOUT ioctl
  sparc64: implement ioremap_uc
  perf scripts python: exported-sql-viewer.py: Fix use of TRUE with SQLite
  arm64: tegra: Fix 'active-low' warning for Jetson Xavier regulator
  arm64: tegra: Fix 'active-low' warning for Jetson TX1 regulator
  rsi: release skb if rsi_prepare_beacon fails
  FROMLIST: scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
  FROMLIST: scsi: ufs: Add dev ref clock gating wait time support
  FROMLIST: scsi: ufs-qcom: Adjust bus bandwidth voting and unvoting
  FROMLIST: scsi: ufs: Remove the check before call setup clock notify vops
  FROMLIST: scsi: ufs: set load before setting voltage in regulators
  FROMLIST: scsi: ufs: Flush exception event before suspend
  FROMLIST: scsi: ufs: Do not rely on prefetched data
  FROMLIST: scsi: ufs: Fix up clock scaling
  FROMGIT: scsi: ufs: Do not free irq in suspend
  FROMGIT: scsi: ufs: Do not clear the DL layer timers
  FROMGIT: scsi: ufs: Release clock if DMA map fails
  FROMGIT: scsi: ufs: Use DBD setting in mode sense
  FROMGIT: scsi: core: Adjust DBD setting in MODE SENSE for caching mode page per LLD
  FROMGIT: scsi: ufs: Complete pending requests in host reset and restore path
  FROMGIT: scsi: ufs: Avoid messing up the compl_time_stamp of lrbs
  FROMGIT: scsi: ufs: Update VCCQ2 and VCCQ min/max voltage hard codes
  FROMGIT: scsi: ufs: Recheck bkops level if bkops is disabled
  ANDROID: update abi_gki_aarch64.xml for LTO, CFI, and SCS
  ANDROID: gki_defconfig: enable LTO, CFI, and SCS
  ANDROID: update abi_gki_aarch64.xml for CONFIG_GNSS
  ANDROID: cuttlefish_defconfig: Enable CONFIG_GNSS
  ANDROID: gki_defconfig: enable HID configs
  UPSTREAM: arm64: Validate tagged addresses in access_ok() called from kernel threads
  ANDROID: kbuild: limit LTO inlining
  ANDROID: kbuild: merge module sections with LTO
  ANDROID: f2fs: fix possible merge of unencrypted with encrypted I/O
  ANDROID: gki_defconfig: Enable UCLAMP by default
  ANDROID: make sure proc mount options are applied
  ANDROID: sound: usb: Add helper APIs to enable audio stream
  ANDROID: Update ABI representation
  ANDROID: Don't base allmodconfig on gki_defconfig
  ANDROID: Disable UNWINDER_ORC for allmodconfig
  ANDROID: ASoC: Fix 'allmodconfig' build break
  Linux 5.4.2
  platform/x86: hp-wmi: Fix ACPI errors caused by passing 0 as input size
  platform/x86: hp-wmi: Fix ACPI errors caused by too small buffer
  HID: core: check whether Usage Page item is after Usage ID items
  crypto: talitos - Fix build error by selecting LIB_DES
  Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()"
  ext4: add more paranoia checking in ext4_expand_extra_isize handling
  r8169: fix resume on cable plug-in
  r8169: fix jumbo configuration for RTL8168evl
  selftests: pmtu: use -oneline for ip route list cache
  tipc: fix link name length check
  selftests: bpf: correct perror strings
  selftests: bpf: test_sockmap: handle file creation failures gracefully
  net/tls: use sg_next() to walk sg entries
  net/tls: remove the dead inplace_crypto code
  selftests/tls: add a test for fragmented messages
  net: skmsg: fix TLS 1.3 crash with full sk_msg
  net/tls: free the record on encryption error
  net/tls: take into account that bpf_exec_tx_verdict() may free the record
  openvswitch: remove another BUG_ON()
  openvswitch: drop unneeded BUG_ON() in ovs_flow_cmd_build_info()
  sctp: cache netns in sctp_ep_common
  slip: Fix use-after-free Read in slip_open
  sctp: Fix memory leak in sctp_sf_do_5_2_4_dupcook
  openvswitch: fix flow command message size
  net: sched: fix `tc -s class show` no bstats on class with nolock subqueues
  net: psample: fix skb_over_panic
  net: macb: add missed tasklet_kill
  net: dsa: sja1105: fix sja1105_parse_rgmii_delays()
  mdio_bus: don't use managed reset-controller
  macvlan: schedule bc_work even if error
  gve: Fix the queue page list allocated pages count
  x86/fpu: Don't cache access to fpu_fpregs_owner_ctx
  thunderbolt: Power cycle the router if NVM authentication fails
  mei: me: add comet point V device id
  mei: bus: prefix device names on bus with the bus name
  USB: serial: ftdi_sio: add device IDs for U-Blox C099-F9P
  staging: rtl8723bs: Add 024c:0525 to the list of SDIO device-ids
  staging: rtl8723bs: Drop ACPI device ids
  staging: rtl8192e: fix potential use after free
  staging: wilc1000: fix illegal memory access in wilc_parse_join_bss_param()
  usb: dwc2: use a longer core rest timeout in dwc2_core_reset()
  driver core: platform: use the correct callback type for bus_find_device
  crypto: inside-secure - Fix stability issue with Macchiatobin
  net: disallow ancillary data for __sys_{send,recv}msg_file()
  net: separate out the msghdr copy from ___sys_{send,recv}msg()
  io_uring: async workers should inherit the user creds
  ANDROID: Update ABI representation
  UPSTREAM: of: property: Add device link support for interrupt-parent, dmas and -gpio(s)
  UPSTREAM: of: property: Fix the semantics of of_is_ancestor_of()
  UPSTREAM: i2c: of: Populate fwnode in of_i2c_get_board_info()
  UPSTREAM: regulator: core: Don't try to remove device links if add failed
  UPSTREAM: driver core: Clarify documentation for fwnode_operations.add_links()
  ANDROID: Update ABI representation
  ANDROID: gki_defconfig: IIO=y
  ANDROID: Update ABI representation
  ANDROID: ASoC: core - add hostless DAI support
  ANDROID: gki_defconfig: =m's applied for virtio configs in arm64
  ANDROID: Update ABI representation after 5.4.1 merge
  Linux 5.4.1
  KVM: PPC: Book3S HV: Flush link stack on guest exit to host kernel
  powerpc/book3s64: Fix link stack flush on context switch
  staging: comedi: usbduxfast: usbduxfast_ai_cmdtest rounding error
  USB: serial: option: add support for Foxconn T77W968 LTE modules
  USB: serial: option: add support for DW5821e with eSIM support
  USB: serial: mos7840: fix remote wakeup
  USB: serial: mos7720: fix remote wakeup
  USB: serial: mos7840: add USB ID to support Moxa UPort 2210
  appledisplay: fix error handling in the scheduled work
  USB: chaoskey: fix error case of a timeout
  usb-serial: cp201x: support Mark-10 digital force gauge
  usbip: Fix uninitialized symbol 'nents' in stub_recv_cmd_submit()
  usbip: tools: fix fd leakage in the function of read_attr_usbip_status
  USBIP: add config dependency for SGL_ALLOC
  ALSA: hda - Disable audio component for legacy Nvidia HDMI codecs
  media: mceusb: fix out of bounds read in MCE receiver buffer
  media: imon: invalid dereference in imon_touch_event
  media: cxusb: detect cxusb_ctrl_msg error in query
  media: b2c2-flexcop-usb: add sanity checking
  media: uvcvideo: Fix error path in control parsing failure
  futex: Prevent exit livelock
  futex: Provide distinct return value when owner is exiting
  futex: Add mutex around futex exit
  futex: Provide state handling for exec() as well
  futex: Sanitize exit state handling
  futex: Mark the begin of futex exit explicitly
  futex: Set task::futex_state to DEAD right after handling futex exit
  futex: Split futex_mm_release() for exit/exec
  exit/exec: Seperate mm_release()
  futex: Replace PF_EXITPIDONE with a state
  futex: Move futex exit handling into futex code
  cpufreq: Add NULL checks to show() and store() methods of cpufreq
  media: usbvision: Fix races among open, close, and disconnect
  media: usbvision: Fix invalid accesses after device disconnect
  media: vivid: Fix wrong locking that causes race conditions on streaming stop
  media: vivid: Set vid_cap_streaming and vid_out_streaming to true
  ALSA: usb-audio: Fix Scarlett 6i6 Gen 2 port data
  ALSA: usb-audio: Fix NULL dereference at parsing BADD
  futex: Prevent robust futex exit race
  x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3
  x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise
  selftests/x86/sigreturn/32: Invalidate DS and ES when abusing the kernel
  selftests/x86/mov_ss_trap: Fix the SYSENTER test
  x86/entry/32: Fix NMI vs ESPFIX
  x86/entry/32: Unwind the ESPFIX stack earlier on exception entry
  x86/entry/32: Move FIXUP_FRAME after pushing %fs in SAVE_ALL
  x86/entry/32: Use %ss segment where required
  x86/entry/32: Fix IRET exception
  x86/cpu_entry_area: Add guard page for entry stack on 32bit
  x86/pti/32: Size initial_page_table correctly
  x86/doublefault/32: Fix stack canaries in the double fault handler
  x86/xen/32: Simplify ring check in xen_iret_crit_fixup()
  x86/xen/32: Make xen_iret_crit_fixup() independent of frame layout
  x86/stackframe/32: Repair 32-bit Xen PV
  nbd: prevent memory leak
  x86/speculation: Fix redundant MDS mitigation message
  x86/speculation: Fix incorrect MDS/TAA mitigation status
  x86/insn: Fix awk regexp warnings
  md/raid10: prevent access of uninitialized resync_pages offset
  Revert "dm crypt: use WQ_HIGHPRI for the IO and crypt workqueues"
  Revert "Bluetooth: hci_ll: set operational frequency earlier"
  ath10k: restore QCA9880-AR1A (v1) detection
  ath10k: Fix HOST capability QMI incompatibility
  ath10k: Fix a NULL-ptr-deref bug in ath10k_usb_alloc_urb_from_pipe
  ath9k_hw: fix uninitialized variable data
  Bluetooth: Fix invalid-free in bcsp_close()
  ANDROID: gki_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE
  FROMLIST: crypto: arm64/sha: fix function types
  ANDROID: arm64: kvm: disable CFI
  ANDROID: arm64: add __nocfi to __apply_alternatives
  ANDROID: arm64: add __pa_function
  ANDROID: arm64: add __nocfi to functions that jump to a physical address
  ANDROID: arm64: bpf: implement arch_bpf_jit_check_func
  ANDROID: bpf: validate bpf_func when BPF_JIT is enabled with CFI
  ANDROID: add support for Clang's Control Flow Integrity (CFI)
  ANDROID: arm64: allow LTO_CLANG and THINLTO to be selected
  FROMLIST: arm64: fix alternatives with LLVM's integrated assembler
  FROMLIST: arm64: lse: fix LSE atomics with LLVM's integrated assembler
  ANDROID: arm64: disable HAVE_ARCH_PREL32_RELOCATIONS with LTO_CLANG
  ANDROID: arm64: vdso: disable LTO
  ANDROID: irqchip/gic-v3: rename gic_of_init to work around a ThinLTO+CFI bug
  ANDROID: soc/tegra: disable ARCH_TEGRA_210_SOC with LTO
  ANDROID: init: ensure initcall ordering with LTO
  ANDROID: drivers/misc/lkdtm: disable LTO for rodata.o
  ANDROID: efi/libstub: disable LTO
  ANDROID: scripts/mod: disable LTO for empty.c
  ANDROID: kbuild: fix dynamic ftrace with clang LTO
  ANDROID: kbuild: add support for Clang LTO
  ANDROID: kbuild: add CONFIG_LD_IS_LLD
  FROMGIT: driver core: platform: use the correct callback type for bus_find_device
  FROMLIST: arm64: implement Shadow Call Stack
  FROMLIST: arm64: disable SCS for hypervisor code
  FROMLIST: arm64: vdso: disable Shadow Call Stack
  FROMLIST: arm64: efi: restore x18 if it was corrupted
  FROMLIST: arm64: preserve x18 when CPU is suspended
  FROMLIST: arm64: reserve x18 from general allocation with SCS
  FROMLIST: arm64: disable function graph tracing with SCS
  FROMLIST: scs: add support for stack usage debugging
  FROMLIST: scs: add accounting
  FROMLIST: add support for Clang's Shadow Call Stack (SCS)
  FROMLIST: arm64: kernel: avoid x18 in __cpu_soft_restart
  FROMLIST: arm64: kvm: stop treating register x18 as caller save
  FROMLIST: arm64/lib: copy_page: avoid x18 register in assembler code
  FROMLIST: arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings
  ANDROID: clang: update to 10.0.1
  ANDROID: update ABI representation

Conflicts:
	Documentation/devicetree/bindings
	Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
	arch/arm64/Kconfig
	drivers/firmware/qcom_scm-64.c
	drivers/hwtracing/coresight/coresight.c
	drivers/scsi/ufs/ufs.h
	drivers/scsi/ufs/ufshcd.c
	drivers/scsi/ufs/ufshcd.h
	drivers/scsi/ufs/unipro.h
	drivers/staging/android/ion/heaps/ion_cma_heap.c
	drivers/staging/android/ion/heaps/ion_system_heap.c
	drivers/usb/dwc3/ep0.c
	drivers/usb/dwc3/gadget.c
	include/sound/pcm.h
	include/sound/soc.h
	kernel/exit.c
	kernel/sched/core.c

Change-Id: I66ea973ddcafd352ba999a1dc98e04df33397e3b
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2020-01-23 04:00:53 -08:00
chenqiwu
66d9052e6c exit: panic before exit_mm() on global init exit
commit 43cf75d96409a20ef06b756877a2e72b10a026fc upstream.

Currently, when global init and all threads in its thread-group have exited
we panic via:
do_exit()
-> exit_notify()
   -> forget_original_parent()
      -> find_child_reaper()
This makes it hard to extract a useable coredump for global init from a
kernel crashdump because by the time we panic exit_mm() will have already
released global init's mm.
This patch moves the panic futher up before exit_mm() is called. As was the
case previously, we only panic when global init and all its threads in the
thread-group have exited.

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
[christian.brauner@ubuntu.com: fix typo, rewrite commit message]
Link: https://lore.kernel.org/r/1576736993-10121-1-git-send-email-qiwuchen55@gmail.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-09 10:20:01 +01:00
chenqiwu
4e24886ec0 UPSTREAM: exit: panic before exit_mm() on global init exit
Currently, when global init and all threads in its thread-group have exited
we panic via:
do_exit()
-> exit_notify()
   -> forget_original_parent()
      -> find_child_reaper()
This makes it hard to extract a useable coredump for global init from a
kernel crashdump because by the time we panic exit_mm() will have already
released global init's mm.
This patch moves the panic futher up before exit_mm() is called. As was the
case previously, we only panic when global init and all its threads in the
thread-group have exited.

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
[christian.brauner@ubuntu.com: fix typo, rewrite commit message]
Link: https://lore.kernel.org/r/1576736993-10121-1-git-send-email-qiwuchen55@gmail.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
(cherry picked from commit 43cf75d96409a20ef06b756877a2e72b10a026fc)
Bug: 146789558
Change-Id: Icff81267e8c49bf1d332773351d1b47cb8cbac4a
Signed-off-by: Alistair Delva <adelva@google.com>
2020-01-03 23:17:51 +00:00
Satya Durga Srinivasu Prabhala
64b577b9cc sched: Add snapshot of Window Assisted Load Tracking (WALT)
This snapshot is taken from msm-4.19 as of commit 5debecbe7195
("trace: filter out spurious preemption and IRQs disable traces").

Change-Id: I8fab4084971baadcaa037f40ab549fc073a4b1ea
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
2019-12-10 12:39:14 -08:00
Thomas Gleixner
b2f4e10676 futex: Mark the begin of futex exit explicitly
commit 18f694385c4fd77a09851fd301236746ca83f3cb upstream.

Instead of relying on PF_EXITING use an explicit state for the futex exit
and set it in the futex exit function. This moves the smp barrier and the
lock/unlock serialization into the futex code.

As with the DEAD state this is restricted to the exit path as exec
continues to use the same task struct.

This allows to simplify that logic in a next step.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.539409004@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-29 10:10:11 +01:00
Thomas Gleixner
350a30ce84 futex: Set task::futex_state to DEAD right after handling futex exit
commit f24f22435dcc11389acc87e5586239c1819d217c upstream.

Setting task::futex_state in do_exit() is rather arbitrarily placed for no
reason. Move it into the futex code.

Note, this is only done for the exit cleanup as the exec cleanup cannot set
the state to FUTEX_STATE_DEAD because the task struct is still in active
use.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.439511191@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-29 10:10:10 +01:00
Thomas Gleixner
7d7e93588f exit/exec: Seperate mm_release()
commit 4610ba7ad877fafc0a25a30c6c82015304120426 upstream.

mm_release() contains the futex exit handling. mm_release() is called from
do_exit()->exit_mm() and from exec()->exec_mm().

In the exit_mm() case PF_EXITING and the futex state is updated. In the
exec_mm() case these states are not touched.

As the futex exit code needs further protections against exit races, this
needs to be split into two functions.

Preparatory only, no functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.240518241@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-29 10:10:10 +01:00
Thomas Gleixner
52507cfaff futex: Replace PF_EXITPIDONE with a state
commit 3d4775df0a89240f671861c6ab6e8d59af8e9e41 upstream.

The futex exit handling relies on PF_ flags. That's suboptimal as it
requires a smp_mb() and an ugly lock/unlock of the exiting tasks pi_lock in
the middle of do_exit() to enforce the observability of PF_EXITING in the
futex code.

Add a futex_state member to task_struct and convert the PF_EXITPIDONE logic
over to the new state. The PF_EXITING dependency will be cleaned up in a
later step.

This prepares for handling various futex exit issues later.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.149449274@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-29 10:10:09 +01:00
Eric W. Biederman
154abafc68 tasks, sched/core: With a grace period after finish_task_switch(), remove unnecessary code
Remove work arounds that were written before there was a grace period
after tasks left the runqueue in finish_task_switch().

In particular now that there tasks exiting the runqueue exprience
a RCU grace period none of the work performed by task_rcu_dereference()
excpet the rcu_dereference() is necessary so replace task_rcu_dereference()
with rcu_dereference().

Remove the code in rcuwait_wait_event() that checks to ensure the current
task has not exited.  It is no longer necessary as it is guaranteed
that any running task will experience a RCU grace period after it
leaves the run queueue.

Remove the comment in rcuwait_wake_up() as it is no longer relevant.

Ref: 8f95c90ceb ("sched/wait, RCU: Introduce rcuwait machinery")
Ref: 150593bf86 ("sched/api: Introduce task_rcu_dereference() and try_get_task_struct()")
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/87lfurdpk9.fsf_-_@x220.int.ebiederm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-09-25 17:42:29 +02:00
Eric W. Biederman
3fbd7ee285 tasks: Add a count of task RCU users
Add a count of the number of RCU users (currently 1) of the task
struct so that we can later add the scheduler case and get rid of the
very subtle task_rcu_dereference(), and just use rcu_dereference().

As suggested by Oleg have the count overlap rcu_head so that no
additional space in task_struct is required.

Inspired-by: Linus Torvalds <torvalds@linux-foundation.org>
Inspired-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/87woebdplt.fsf_-_@x220.int.ebiederm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-09-25 17:42:29 +02:00
Linus Torvalds
c17112a5c4 core-process-v5.4
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Merge tag 'core-process-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux

Pull pidfd/waitid updates from Christian Brauner:
 "This contains two features and various tests.

  First, it adds support for waiting on process through pidfds by adding
  the P_PIDFD type to the waitid() syscall. This completes the basic
  functionality of the pidfd api (cf. [1]). In the meantime we also have
  a new adition to the userspace projects that make use of the pidfd
  api. The qt project was nice enough to send a mail pointing out that
  they have a pr up to switch to the pidfd api (cf. [2]).

  Second, this tag contains an extension to the waitid() syscall to make
  it possible to wait on the current process group in a race free manner
  (even though the actual problem is very unlikely) by specifing 0
  together with the P_PGID type. This extension traces back to a
  discussion on the glibc development mailing list.

  There are also a range of tests for the features above. Additionally,
  the test-suite which detected the pidfd-polling race we fixed in [3]
  is included in this tag"

[1] https://lwn.net/Articles/794707/
[2] https://codereview.qt-project.org/c/qt/qtbase/+/108456
[3] commit b191d6491b ("pidfd: fix a poll race when setting exit_state")

* tag 'core-process-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  waitid: Add support for waiting for the current process group
  tests: add pidfd poll tests
  tests: move common definitions and functions into pidfd.h
  pidfd: add pidfd_wait tests
  pidfd: add P_PIDFD to waitid()
2019-09-16 09:28:19 -07:00
Eric W. Biederman
821cc7b0b2
waitid: Add support for waiting for the current process group
It was recently discovered that the linux version of waitid is not a
superset of the other wait functions because it does not include support
for waiting for the current process group. This has two downsides:
1. An extra system call is needed to get the current process group.
2. After the current process group is received and before it is passed
   to waitid a signal could arrive causing the current process group to change.
   Inherent race-conditions as these make it impossible for userspace to
   emulate this functionaly and thus violate async-signal safety
   requirements for waitpid.

Arguments can be made for using a different choice of idtype and id
for this case but the BSDs already use this P_PGID and 0 to indicate
waiting for the current process's process group.  So be nice to user
space programmers and don't introduce an unnecessary incompatibility.

Some people have noted that the posix description is that
waitpid will wait for the current process group, and that in
the presence of pthreads that process group can change.  To get
clarity on this issue I looked at XNU, FreeBSD, and Luminos.  All of
those flavors of unix waited for the current process group at the
time of call and as written could not adapt to the process group
changing after the call.

At one point Linux did adapt to the current process group changing but
that stopped in 161550d74c ("pid: sys_wait... fixes").  It has been
over 11 years since Linux has that behavior, no programs that fail
with the change in behavior have been reported, and I could not
find any other unix that does this.  So I think it is safe to clarify
the definition of current process group, to current process group
at the time of the wait function.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Alistair Francis <alistair23@gmail.com>
Cc: Zong Li <zongbox@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: GNU C Library <libc-alpha@sourceware.org>
Link: https://lore.kernel.org/r/20190814154400.6371-2-christian.brauner@ubuntu.com
2019-09-10 17:05:46 +02:00
Christian Brauner
3695eae5fe
pidfd: add P_PIDFD to waitid()
This adds the P_PIDFD type to waitid().
One of the last remaining bits for the pidfd api is to make it possible
to wait on pidfds. With P_PIDFD added to waitid() the parts of userspace
that want to use the pidfd api to exclusively manage processes can do so
now.

One of the things this will unblock in the future is the ability to make
it possible to retrieve the exit status via waitid(P_PIDFD) for
non-parent processes if handed a _suitable_ pidfd that has this feature
set. This is similar to what you can do on FreeBSD with kqueue(). It
might even end up being possible to wait on a process as a non-parent if
an appropriate property is enabled on the pidfd.

With P_PIDFD no scoping of the process identified by the pidfd is
possible, i.e. it explicitly blocks things such as wait4(-1), wait4(0),
waitid(P_ALL), waitid(P_PGID) etc. It only allows for semantics
equivalent to wait4(pid), waitid(P_PID). Users that need scoping should
rely on pid-based wait*() syscalls for now.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/20190727222229.6516-2-christian@brauner.io
2019-08-01 21:49:46 +02:00
Christian Brauner
30b692d3b3
exit: make setting exit_state consistent
Since commit b191d6491b ("pidfd: fix a poll race when setting exit_state")
we unconditionally set exit_state to EXIT_ZOMBIE before calling into
do_notify_parent(). This was done to eliminate a race when querying
exit_state in do_notify_pidfd().
Back then we decided to do the absolute minimal thing to fix this and
not touch the rest of the exit_notify() function where exit_state is
set.
Since this fix has not caused any issues change the setting of
exit_state to EXIT_DEAD in the autoreap case to account for the fact hat
exit_state is set to EXIT_ZOMBIE unconditionally. This fix was planned
but also explicitly requested in [1] and makes the whole code more
consistent.

/* References */
[1]: https://lore.kernel.org/lkml/CAHk-=wigcxGFR2szue4wavJtH5cYTTeNES=toUBVGsmX0rzX+g@mail.gmail.com

Signed-off-by: Christian Brauner <christian@brauner.io>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-30 19:57:14 +02:00
Suren Baghdasaryan
b191d6491b
pidfd: fix a poll race when setting exit_state
There is a race between reading task->exit_state in pidfd_poll and
writing it after do_notify_parent calls do_notify_pidfd. Expected
sequence of events is:

CPU 0                            CPU 1
------------------------------------------------
exit_notify
  do_notify_parent
    do_notify_pidfd
  tsk->exit_state = EXIT_DEAD
                                  pidfd_poll
                                     if (tsk->exit_state)

However nothing prevents the following sequence:

CPU 0                            CPU 1
------------------------------------------------
exit_notify
  do_notify_parent
    do_notify_pidfd
                                   pidfd_poll
                                      if (tsk->exit_state)
  tsk->exit_state = EXIT_DEAD

This causes a polling task to wait forever, since poll blocks because
exit_state is 0 and the waiting task is not notified again. A stress
test continuously doing pidfd poll and process exits uncovered this bug.

To fix it, we make sure that the task's exit_state is always set before
calling do_notify_pidfd.

Fixes: b53b0b9d9a ("pidfd: add polling support")
Cc: kernel-team@android.com
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20190717172100.261204-1-joel@joelfernandes.org
[christian@brauner.io: adapt commit message and drop unneeded changes from wait_task_zombie]
Signed-off-by: Christian Brauner <christian@brauner.io>
2019-07-22 16:02:03 +02:00
Tejun Heo
6b115bf58e cgroup: Call cgroup_release() before __exit_signal()
cgroup_release() calls cgroup_subsys->release() which is used by the
pids controller to uncharge its pid.  We want to use it to manage
iteration of dying tasks which requires putting it before
__unhash_process().  Move cgroup_release() above __exit_signal().
While this makes it uncharge before the pid is freed, pid is RCU freed
anyway and the window is very narrow.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
2019-05-31 10:38:57 -07:00
Thomas Gleixner
457c899653 treewide: Add SPDX license identifier for missed files
Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have EXPORT_.*_SYMBOL_GPL inside which was used in the
   initial scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:45 +02:00
Andrea Arcangeli
987717e5e0 mm: change mm_update_next_owner() to update mm->owner with WRITE_ONCE
The RCU reader uses rcu_dereference() inside rcu_read_lock critical
sections, so the writer shall use WRITE_ONCE.  Just a cleanup, we still
rely on gcc to emit atomic writes in other places.

Link: http://lkml.kernel.org/r/20190325225636.11635-3-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14 19:52:47 -07:00
Linus Torvalds
1fc1cd8399 Merge branch 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:

 - Oleg's pids controller accounting update which gets rid of rcu delay
   in pids accounting updates

 - rstat (cgroup hierarchical stat collection mechanism) optimization

 - Doc updates

* 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: remove unused task_has_mempolicy()
  cgroup, rstat: Don't flush subtree root unless necessary
  cgroup: add documentation for pids.events file
  Documentation: cgroup-v2: eliminate markup warnings
  MAINTAINERS: Update cgroup entry
  cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting
2019-03-07 10:11:41 -08:00
Andrei Vagin
8fb335e078 kernel/exit.c: release ptraced tasks before zap_pid_ns_processes
Currently, exit_ptrace() adds all ptraced tasks in a dead list, then
zap_pid_ns_processes() waits on all tasks in a current pidns, and only
then are tasks from the dead list released.

zap_pid_ns_processes() can get stuck on waiting tasks from the dead
list.  In this case, we will have one unkillable process with one or
more dead children.

Thanks to Oleg for the advice to release tasks in find_child_reaper().

Link: http://lkml.kernel.org/r/20190110175200.12442-1-avagin@gmail.com
Fixes: 7c8bd2322c ("exit: ptrace: shift "reap dead" code from exit_ptrace() to forget_original_parent()")
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-02-01 15:46:23 -08:00
Oleg Nesterov
51bee5abea cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting
The only user of cgroup_subsys->free() callback is pids_cgrp_subsys which
needs pids_free() to uncharge the pid.

However, ->free() is called from __put_task_struct()->cgroup_free() and this
is too late. Even the trivial program which does

	for (;;) {
		int pid = fork();
		assert(pid >= 0);
		if (pid)
			wait(NULL);
		else
			exit(0);
	}

can run out of limits because release_task()->call_rcu(delayed_put_task_struct)
implies an RCU gp after the task/pid goes away and before the final put().

Test-case:

	mkdir -p /tmp/CG
	mount -t cgroup2 none /tmp/CG
	echo '+pids' > /tmp/CG/cgroup.subtree_control

	mkdir /tmp/CG/PID
	echo 2 > /tmp/CG/PID/pids.max

	perl -e 'while ($p = fork) { wait; } $p // die "fork failed: $!\n"' &
	echo $! > /tmp/CG/PID/cgroup.procs

Without this patch the forking process fails soon after migration.

Rename cgroup_subsys->free() to cgroup_subsys->release() and move the callsite
into the new helper, cgroup_release(), called by release_task() which actually
frees the pid(s).

Reported-by: Herton R. Krzesinski <hkrzesin@redhat.com>
Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2019-01-31 06:55:57 -08:00
Prateek Sood
6dc080eeb2 sched/wait: Fix rcuwait_wake_up() ordering
For some peculiar reason rcuwait_wake_up() has the right barrier in
the comment, but not in the code.

This mistake has been observed to cause a deadlock in the following
situation:

    P1					P2

    percpu_up_read()			percpu_down_write()
      rcu_sync_is_idle() // false
					  rcu_sync_enter()
					  ...
      __percpu_up_read()

[S] ,-  __this_cpu_dec(*sem->read_count)
    |   smp_rmb();
[L] |   task = rcu_dereference(w->task) // NULL
    |
    |				    [S]	    w->task = current
    |					    smp_mb();
    |				    [L]	    readers_active_check() // fail
    `-> <store happens here>

Where the smp_rmb() (obviously) fails to constrain the store.

[ peterz: Added changelog. ]

Signed-off-by: Prateek Sood <prsood@codeaurora.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 8f95c90ceb ("sched/wait, RCU: Introduce rcuwait machinery")
Link: https://lkml.kernel.org/r/1543590656-7157-1-git-send-email-prsood@codeaurora.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-01-21 11:15:36 +01:00
Linus Torvalds
e8746440bf Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix regression in multi-SKB responses to RTM_GETADDR, from Arthur
    Gautier.

 2) Fix ipv6 frag parsing in openvswitch, from Yi-Hung Wei.

 3) Unbounded recursion in ipv4 and ipv6 GUE tunnels, from Stefano
    Brivio.

 4) Use after free in hns driver, from Yonglong Liu.

 5) icmp6_send() needs to handle the case of NULL skb, from Eric
    Dumazet.

 6) Missing rcu read lock in __inet6_bind() when operating on mapped
    addresses, from David Ahern.

 7) Memory leak in tipc-nl_compat_publ_dump(), from Gustavo A. R. Silva.

 8) Fix PHY vs r8169 module loading ordering issues, from Heiner
    Kallweit.

 9) Fix bridge vlan memory leak, from Ido Schimmel.

10) Dev refcount leak in AF_PACKET, from Jason Gunthorpe.

11) Infoleak in ipv6_local_error(), flow label isn't completely
    initialized. From Eric Dumazet.

12) Handle mv88e6390 errata, from Andrew Lunn.

13) Making vhost/vsock CID hashing consistent, from Zha Bin.

14) Fix lack of UMH cleanup when it unexpectedly exits, from Taehee Yoo.

15) Bridge forwarding must clear skb->tstamp, from Paolo Abeni.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits)
  bnxt_en: Fix context memory allocation.
  bnxt_en: Fix ring checking logic on 57500 chips.
  mISDN: hfcsusb: Use struct_size() in kzalloc()
  net: clear skb->tstamp in bridge forwarding path
  net: bpfilter: disallow to remove bpfilter module while being used
  net: bpfilter: restart bpfilter_umh when error occurred
  net: bpfilter: use cleanup callback to release umh_info
  umh: add exit routine for UMH process
  isdn: i4l: isdn_tty: Fix some concurrency double-free bugs
  vhost/vsock: fix vhost vsock cid hashing inconsistent
  net: stmmac: Prevent RX starvation in stmmac_napi_poll()
  net: stmmac: Fix the logic of checking if RX Watchdog must be enabled
  net: stmmac: Check if CBS is supported before configuring
  net: stmmac: dwxgmac2: Only clear interrupts that are active
  net: stmmac: Fix PCI module removal leak
  tools/bpf: fix bpftool map dump with bitfields
  tools/bpf: test btf bitfield with >=256 struct member offset
  bpf: fix bpffs bitfield pretty print
  net: ethernet: mediatek: fix warning in phy_start_aneg
  tcp: change txhash on SYN-data timeout
  ...
2019-01-16 05:13:36 +12:00
Taehee Yoo
73ab1cb2de umh: add exit routine for UMH process
A UMH process which is created by the fork_usermode_blob() such as
bpfilter needs to release members of the umh_info when process is
terminated.
But the do_exit() does not release members of the umh_info. hence module
which uses UMH needs own code to detect whether UMH process is
terminated or not.
But this implementation needs extra code for checking the status of
UMH process. it eventually makes the code more complex.

The new PF_UMH flag is added and it is used to identify UMH processes.
The exit_umh() does not release members of the umh_info.
Hence umh_info->cleanup callback should release both members of the
umh_info and the private data.

Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-11 18:05:40 -08:00
Linus Torvalds
594cc251fd make 'user_access_begin()' do 'access_ok()'
Originally, the rule used to be that you'd have to do access_ok()
separately, and then user_access_begin() before actually doing the
direct (optimized) user access.

But experience has shown that people then decide not to do access_ok()
at all, and instead rely on it being implied by other operations or
similar.  Which makes it very hard to verify that the access has
actually been range-checked.

If you use the unsafe direct user accesses, hardware features (either
SMAP - Supervisor Mode Access Protection - on x86, or PAN - Privileged
Access Never - on ARM) do force you to use user_access_begin().  But
nothing really forces the range check.

By putting the range check into user_access_begin(), we actually force
people to do the right thing (tm), and the range check vill be visible
near the actual accesses.  We have way too long a history of people
trying to avoid them.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-04 12:56:09 -08:00
Linus Torvalds
96d4f267e4 Remove 'type' argument from access_ok() function
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-03 18:57:57 -08:00
Eric W. Biederman
0102498083 signal: Pass pid type into group_send_sig_info
This passes the information we already have at the call sight
into group_send_sig_info.  Ultimatelly allowing for to better handle
signals sent to a group of processes.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-07-21 12:57:35 -05:00
Eric W. Biederman
6883f81aac pid: Implement PIDTYPE_TGID
Everywhere except in the pid array we distinguish between a tasks pid and
a tasks tgid (thread group id).  Even in the enumeration we want that
distinction sometimes so we have added __PIDTYPE_TGID.  With leader_pid
we almost have an implementation of PIDTYPE_TGID in struct signal_struct.

Add PIDTYPE_TGID as a first class member of the pid_type enumeration and
into the pids array.  Then remove the __PIDTYPE_TGID special case and the
leader_pid in signal_struct.

The net size increase is just an extra pointer added to struct pid and
an extra pair of pointers of an hlist_node added to task_struct.

The effect on code maintenance is the removal of a number of special
cases today and the potential to remove many more special cases as
PIDTYPE_TGID gets used to it's fullest.  The long term potential
is allowing zombie thread group leaders to exit, which will remove
a lot more special cases in the code.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-07-21 10:43:12 -05:00
Eric W. Biederman
1fb53567a3 pids: Move task_pid_type into sched/signal.h
The function is general and inline so there is no need
to hide it inside of exit.c

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-07-21 10:43:12 -05:00
Dominik Brodowski
d300b61081 kernel: use kernel_wait4() instead of sys_wait4()
All call sites of sys_wait4() set *rusage to NULL. Therefore, there is
no need for the copy_to_user() handling of *rusage, and we can use
kernel_wait4() directly.

This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net

Acked-by: Luis R. Rodriguez <mcgrof@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2018-04-02 20:14:51 +02:00
Andrew Morton
dc8635b78c kernel/exit.c: export abort() to modules
gcc -fisolate-erroneous-paths-dereference can generate calls to abort()
from modular code too.

[arnd@arndb.de: drop duplicate exports of abort()]
  Link: http://lkml.kernel.org/r/20180102103311.706364-1-arnd@arndb.de
Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-01-04 16:45:09 -08:00
Sudip Mukherjee
7c2c11b208 arch: define weak abort()
gcc toggle -fisolate-erroneous-paths-dereference (default at -O2
onwards) isolates faulty code paths such as null pointer access, divide
by zero etc.  If gcc port doesnt implement __builtin_trap, an abort() is
generated which causes kernel link error.

In this case, gcc is generating abort due to 'divide by zero' in
lib/mpi/mpih-div.c.

Currently 'frv' and 'arc' are failing.  Previously other arch was also
broken like m32r was fixed by commit d22e3d69ee ("m32r: fix build
failure").

Let's define this weak function which is common for all arch and fix the
problem permanently.  We can even remove the arch specific 'abort' after
this is done.

Link: http://lkml.kernel.org/r/1513118956-8718-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-12-14 16:00:49 -08:00
Mark Rutland
6aa7de0591 locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.

For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.

However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:

----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()

// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch

virtual patch

@ depends on patch @
expression E1, E2;
@@

- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)

@ depends on patch @
expression E;
@@

- ACCESS_ONCE(E)
+ READ_ONCE(E)
----

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-25 11:01:08 +02:00
Kees Cook
1c9fec470b waitid(): Avoid unbalanced user_access_end() on access_ok() error
As pointed out by Linus and David, the earlier waitid() fix resulted in
a (currently harmless) unbalanced user_access_end() call.  This fixes it
to just directly return EFAULT on access_ok() failure.

Fixes: 96ca579a1e ("waitid(): Add missing access_ok() checks")
Acked-by: David Daney <david.daney@cavium.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-10-20 15:32:54 -04:00
Kees Cook
96ca579a1e waitid(): Add missing access_ok() checks
Adds missing access_ok() checks.

CVE-2017-5123

Reported-by: Chris Salls <chrissalls5@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes: 4c48abe91b ("waitid(): switch copyout of siginfo to unsafe_put_user()")
Cc: stable@kernel.org # 4.13
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-10-09 17:03:31 -07:00
Al Viro
6c85501f2f fix infoleak in waitid(2)
kernel_waitid() can return a PID, an error or 0.  rusage is filled in the first
case and waitid(2) rusage should've been copied out exactly in that case, *not*
whenever kernel_waitid() has not returned an error.  Compat variant shares that
braino; none of kernel_wait4() callers do, so the below ought to fix it.

Reported-and-tested-by: Alexander Potapenko <glider@google.com>
Fixes: ce72a16fa7 ("wait4(2)/waitid(2): separate copying rusage to userland")
Cc: stable@vger.kernel.org # v4.13
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-09-29 13:43:15 -04:00
Linus Torvalds
dd198ce714 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace updates from Eric Biederman:
 "Life has been busy and I have not gotten half as much done this round
  as I would have liked. I delayed it so that a minor conflict
  resolution with the mips tree could spend a little time in linux-next
  before I sent this pull request.

  This includes two long delayed user namespace changes from Kirill
  Tkhai. It also includes a very useful change from Serge Hallyn that
  allows the security capability attribute to be used inside of user
  namespaces. The practical effect of this is people can now untar
  tarballs and install rpms in user namespaces. It had been suggested to
  generalize this and encode some of the namespace information
  information in the xattr name. Upon close inspection that makes the
  things that should be hard easy and the things that should be easy
  more expensive.

  Then there is my bugfix/cleanup for signal injection that removes the
  magic encoding of the siginfo union member from the kernel internal
  si_code. The mips folks reported the case where I had used FPE_FIXME
  me is impossible so I have remove FPE_FIXME from mips, while at the
  same time including a return statement in that case to keep gcc from
  complaining about unitialized variables.

  I almost finished the work to get make copy_siginfo_to_user a trivial
  copy to user. The code is available at:

     git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git neuter-copy_siginfo_to_user-v3

  But I did not have time/energy to get the code posted and reviewed
  before the merge window opened.

  I was able to see that the security excuse for just copying fields
  that we know are initialized doesn't work in practice there are buggy
  initializations that don't initialize the proper fields in siginfo. So
  we still sometimes copy unitialized data to userspace"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  Introduce v3 namespaced file capabilities
  mips/signal: In force_fcr31_sig return in the impossible case
  signal: Remove kernel interal si_code magic
  fcntl: Don't use ambiguous SIG_POLL si_codes
  prctl: Allow local CAP_SYS_ADMIN changing exe_file
  security: Use user_namespace::level to avoid redundant iterations in cap_capable()
  userns,pidns: Verify the userns for new pid namespaces
  signal/testing: Don't look for __SI_FAULT in userspace
  signal/mips: Document a conflict with SI_USER with SIGFPE
  signal/sparc: Document a conflict with SI_USER with SIGFPE
  signal/ia64: Document a conflict with SI_USER with SIGFPE
  signal/alpha: Document a conflict with SI_USER for SIGTRAP
2017-09-11 18:34:47 -07:00
Linus Torvalds
5f82e71a00 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:

 - Add 'cross-release' support to lockdep, which allows APIs like
   completions, where it's not the 'owner' who releases the lock, to be
   tracked. It's all activated automatically under
   CONFIG_PROVE_LOCKING=y.

 - Clean up (restructure) the x86 atomics op implementation to be more
   readable, in preparation of KASAN annotations. (Dmitry Vyukov)

 - Fix static keys (Paolo Bonzini)

 - Add killable versions of down_read() et al (Kirill Tkhai)

 - Rework and fix jump_label locking (Marc Zyngier, Paolo Bonzini)

 - Rework (and fix) tlb_flush_pending() barriers (Peter Zijlstra)

 - Remove smp_mb__before_spinlock() and convert its usages, introduce
   smp_mb__after_spinlock() (Peter Zijlstra)

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits)
  locking/lockdep/selftests: Fix mixed read-write ABBA tests
  sched/completion: Avoid unnecessary stack allocation for COMPLETION_INITIALIZER_ONSTACK()
  acpi/nfit: Fix COMPLETION_INITIALIZER_ONSTACK() abuse
  locking/pvqspinlock: Relax cmpxchg's to improve performance on some architectures
  smp: Avoid using two cache lines for struct call_single_data
  locking/lockdep: Untangle xhlock history save/restore from task independence
  locking/refcounts, x86/asm: Disable CONFIG_ARCH_HAS_REFCOUNT for the time being
  futex: Remove duplicated code and fix undefined behaviour
  Documentation/locking/atomic: Finish the document...
  locking/lockdep: Fix workqueue crossrelease annotation
  workqueue/lockdep: 'Fix' flush_work() annotation
  locking/lockdep/selftests: Add mixed read-write ABBA tests
  mm, locking/barriers: Clarify tlb_flush_pending() barriers
  locking/lockdep: Make CONFIG_LOCKDEP_CROSSRELEASE and CONFIG_LOCKDEP_COMPLETIONS truly non-interactive
  locking/lockdep: Explicitly initialize wq_barrier::done::map
  locking/lockdep: Rename CONFIG_LOCKDEP_COMPLETE to CONFIG_LOCKDEP_COMPLETIONS
  locking/lockdep: Reword title of LOCKDEP_CROSSRELEASE config
  locking/lockdep: Make CONFIG_LOCKDEP_CROSSRELEASE part of CONFIG_PROVE_LOCKING
  locking/refcounts, x86/asm: Implement fast refcount overflow protection
  locking/lockdep: Fix the rollback and overwrite detection logic in crossrelease
  ...
2017-09-04 11:52:29 -07:00
Paul E. McKenney
656e7c0c0a Merge branches 'doc.2017.08.17a', 'fixes.2017.08.17a', 'hotplug.2017.07.25b', 'misc.2017.08.17a', 'spin_unlock_wait_no.2017.08.17a', 'srcu.2017.07.27c' and 'torture.2017.07.24c' into HEAD
doc.2017.08.17a: Documentation updates.
fixes.2017.08.17a: RCU fixes.
hotplug.2017.07.25b: CPU-hotplug updates.
misc.2017.08.17a: Miscellaneous fixes outside of RCU (give or take conflicts).
spin_unlock_wait_no.2017.08.17a: Remove spin_unlock_wait().
srcu.2017.07.27c: SRCU updates.
torture.2017.07.24c: Torture-test updates.
2017-08-17 08:10:04 -07:00
Paul E. McKenney
8083f29349 exit: Replace spin_unlock_wait() with lock/unlock pair
There is no agreed-upon definition of spin_unlock_wait()'s semantics, and
it appears that all callers could do just as well with a lock/unlock pair.
This commit therefore replaces the spin_unlock_wait() call in do_exit()
with spin_lock() followed immediately by spin_unlock().  This should be
safe from a performance perspective because the lock is a per-task lock,
and this is happening only at task-exit time.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-17 08:08:57 -07:00
Paul E. McKenney
ccdd29ffff rcu: Create reasonable API for do_exit() TASKS_RCU processing
Currently, the exit-time support for TASKS_RCU is open-coded in do_exit().
This commit creates exit_tasks_rcu_start() and exit_tasks_rcu_finish()
APIs for do_exit() use.  This has the benefit of confining the use of the
tasks_rcu_exit_srcu variable to one file, allowing it to become static.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2017-08-17 07:26:05 -07:00
Byungchul Park
b09be676e0 locking/lockdep: Implement the 'crossrelease' feature
Lockdep is a runtime locking correctness validator that detects and
reports a deadlock or its possibility by checking dependencies between
locks. It's useful since it does not report just an actual deadlock but
also the possibility of a deadlock that has not actually happened yet.
That enables problems to be fixed before they affect real systems.

However, this facility is only applicable to typical locks, such as
spinlocks and mutexes, which are normally released within the context in
which they were acquired. However, synchronization primitives like page
locks or completions, which are allowed to be released in any context,
also create dependencies and can cause a deadlock.

So lockdep should track these locks to do a better job. The 'crossrelease'
implementation makes these primitives also be tracked.

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: akpm@linux-foundation.org
Cc: boqun.feng@gmail.com
Cc: kernel-team@lge.com
Cc: kirill@shutemov.name
Cc: npiggin@gmail.com
Cc: walken@google.com
Cc: willy@infradead.org
Link: http://lkml.kernel.org/r/1502089981-21272-6-git-send-email-byungchul.park@lge.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-10 12:29:07 +02:00
Eric W. Biederman
cc731525f2 signal: Remove kernel interal si_code magic
struct siginfo is a union and the kernel since 2.4 has been hiding a union
tag in the high 16bits of si_code using the values:
__SI_KILL
__SI_TIMER
__SI_POLL
__SI_FAULT
__SI_CHLD
__SI_RT
__SI_MESGQ
__SI_SYS

While this looks plausible on the surface, in practice this situation has
not worked well.

- Injected positive signals are not copied to user space properly
  unless they have these magic high bits set.

- Injected positive signals are not reported properly by signalfd
  unless they have these magic high bits set.

- These kernel internal values leaked to userspace via ptrace_peek_siginfo

- It was possible to inject these kernel internal values and cause the
  the kernel to misbehave.

- Kernel developers got confused and expected these kernel internal values
  in userspace in kernel self tests.

- Kernel developers got confused and set si_code to __SI_FAULT which
  is SI_USER in userspace which causes userspace to think an ordinary user
  sent the signal and that it was not kernel generated.

- The values make it impossible to reorganize the code to transform
  siginfo_copy_to_user into a plain copy_to_user.  As si_code must
  be massaged before being passed to userspace.

So remove these kernel internal si codes and make the kernel code simpler
and more maintainable.

To replace these kernel internal magic si_codes introduce the helper
function siginfo_layout, that takes a signal number and an si_code and
computes which union member of siginfo is being used.  Have
siginfo_layout return an enumeration so that gcc will have enough
information to warn if a switch statement does not handle all of union
members.

A couple of architectures have a messed up ABI that defines signal
specific duplications of SI_USER which causes more special cases in
siginfo_layout than I would like.  The good news is only problem
architectures pay the cost.

Update all of the code that used the previous magic __SI_ values to
use the new SIL_ values and to call siginfo_layout to get those
values.  Escept where not all of the cases are handled remove the
defaults in the switch statements so that if a new case is missed in
the future the lack will show up at compile time.

Modify the code that copies siginfo si_code to userspace to just copy
the value and not cast si_code to a short first.  The high bits are no
longer used to hold a magic union member.

Fixup the siginfo header files to stop including the __SI_ values in
their constants and for the headers that were missing it to properly
update the number of si_codes for each signal type.

The fixes to copy_siginfo_from_user32 implementations has the
interesting property that several of them perviously should never have
worked as the __SI_ values they depended up where kernel internal.
With that dependency gone those implementations should work much
better.

The idea of not passing the __SI_ values out to userspace and then
not reinserting them has been tested with criu and criu worked without
changes.

Ref: 2.4.0-test1
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2017-07-24 14:30:28 -05:00
zhongjiang
dd83c161fb kernel/exit.c: avoid undefined behaviour when calling wait4()
wait4(-2147483648, 0x20, 0, 0xdd0000) triggers:
UBSAN: Undefined behaviour in kernel/exit.c:1651:9

The related calltrace is as follows:

  negation of -2147483648 cannot be represented in type 'int':
  CPU: 9 PID: 16482 Comm: zj Tainted: G    B          ---- -------   3.10.0-327.53.58.71.x86_64+ #66
  Hardware name: Huawei Technologies Co., Ltd. Tecal RH2285          /BC11BTSA              , BIOS CTSAV036 04/27/2011
  Call Trace:
    dump_stack+0x19/0x1b
    ubsan_epilogue+0xd/0x50
    __ubsan_handle_negate_overflow+0x109/0x14e
    SyS_wait4+0x1cb/0x1e0
    system_call_fastpath+0x16/0x1b

Exclude the overflow to avoid the UBSAN warning.

Link: http://lkml.kernel.org/r/1497264618-20212-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhongjiang <zhongjiang@huawei.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10 16:32:36 -07:00
Al Viro
634a816095 fix waitid(2) breakage
We lose the distinction between "found a PID" and "nothing, but that's not
an error" a bit too early in waitid().  Easily fixed, fortunately...

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Fixes: 67d7ddded3 ("waitid(2): leave copyout of siginfo to syscall itself")
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-07-08 11:26:39 -04:00