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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Greg Kroah-Hartman
|
ae0dae9ffc |
This is the 5.4.37 stable release
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generic interface s390/ftrace: fix potential crashes when switching tracers ASoC: q6dsp6: q6afe-dai: add missing channels to MI2S DAIs ASoC: tas571x: disable regulators on failed probe ASoC: meson: axg-card: fix codec-to-codec link setup ASoC: wm8960: Fix wrong clock after suspend & resume drivers: soc: xilinx: fix firmware driver Kconfig dependency nfsd: memory corruption in nfsd4_lock() bpf: Forbid XADD on spilled pointers for unprivileged users i2c: altera: use proper variable to hold errno rxrpc: Fix DATA Tx to disable nofrag for UDP on AF_INET6 socket net/cxgb4: Check the return from t4_query_params properly xfs: acquire superblock freeze protection on eofblocks scans svcrdma: Fix trace point use-after-free race svcrdma: Fix leak of svc_rdma_recv_ctxt objects net/mlx5e: Don't trigger IRQ multiple times on XSK wakeup to avoid WQ overruns net/mlx5e: Get the latest values from counters in switchdev mode PCI: Avoid ASMedia XHCI USB PME# from D0 defect PCI: Add ACS quirk for Zhaoxin multi-function devices PCI: Make ACS quirk implementations more uniform PCI: Unify ACS quirk desired vs provided checking PCI: Add Zhaoxin Vendor ID PCI: Add ACS quirk for Zhaoxin Root/Downstream Ports PCI: Move Apex Edge TPU class quirk to fix BAR assignment ARM: dts: bcm283x: Disable dsi0 node cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled s390/pci: do not set affinity for floating irqs net/mlx5: Fix failing fw tracer allocation on s390 sched/core: Fix reset-on-fork from RT with uclamp perf/core: fix parent pid/tid in task exit events netfilter: nat: fix error handling upon registering inet hook PM: sleep: core: Switch back to async_schedule_dev() blk-iocost: Fix error on iocost_ioc_vrate_adj um: ensure `make ARCH=um mrproper` removes arch/$(SUBARCH)/include/generated/ bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension bpf, x86_32: Fix clobbering of dst for BPF_JSET bpf, x86_32: Fix logic error in BPF_LDX zero-extension mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path xfs: clear PF_MEMALLOC before exiting xfsaild thread bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B libbpf: Initialize *nl_pid so gcc 10 is happy net: fec: set GPR bit on suspend by DT configuration. x86: hyperv: report value of misc_features signal: check sig before setting info in kill_pid_usb_asyncio afs: Fix length of dump of bad YFSFetchStatus record xfs: fix partially uninitialized structure in xfs_reflink_remap_extent ALSA: hda: Release resources at error in delayed probe ALSA: hda: Keep the controller initialization even if no codecs found ALSA: hda: Explicitly permit using autosuspend if runtime PM is supported scsi: target: fix PR IN / READ FULL STATUS for FC scsi: target: tcmu: reset_ring should reset TCMU_DEV_BIT_BROKEN objtool: Fix CONFIG_UBSAN_TRAP unreachable warnings objtool: Support Clang non-section symbols in ORC dump xen/xenbus: ensure xenbus_map_ring_valloc() returns proper grant status ALSA: hda: call runtime_allow() for all hda controllers net: stmmac: socfpga: Allow all RGMII modes mac80211: fix channel switch trigger from unknown mesh peer arm64: Delete the space separator in __emit_inst ext4: use matching invalidatepage in ext4_writepage ext4: increase wait time needed before reuse of deleted inode numbers ext4: convert BUG_ON's to WARN_ON's in mballoc.c blk-mq: Put driver tag in blk_mq_dispatch_rq_list() when no budget hwmon: (jc42) Fix name to have no illegal characters taprio: do not use BIT() in TCA_TAPRIO_ATTR_FLAG_* definitions qed: Fix race condition between scheduling and destroying the slowpath workqueue Crypto: chelsio - Fixes a hang issue during driver registration net: use indirect call wrappers for skb_copy_datagram_iter() qed: Fix use after free in qed_chain_free ext4: check for non-zero journal inum in ext4_calculate_overhead ASoC: soc-core: disable route checks for legacy devices ASoC: stm32: spdifrx: fix regmap status check Linux 5.4.37 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ice2ab2e77117b798ed22e9442f72a44f39be28dc |
||
Quentin Perret
|
c04d01e918 |
sched/core: Fix reset-on-fork from RT with uclamp
commit eaf5a92ebde5bca3bb2565616115bd6d579486cd upstream.
uclamp_fork() resets the uclamp values to their default when the
reset-on-fork flag is set. It also checks whether the task has a RT
policy, and sets its uclamp.min to 1024 accordingly. However, during
reset-on-fork, the task's policy is lowered to SCHED_NORMAL right after,
hence leading to an erroneous uclamp.min setting for the new task if it
was forked from RT.
Fix this by removing the unnecessary check on rt_task() in
uclamp_fork() as this doesn't make sense if the reset-on-fork flag is
set.
Fixes:
|
||
|
Greg Kroah-Hartman
|
a9372c6b57 |
This is the 5.4.33 stable release
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Merge 5.4.33 into android-5.4-stable
Changes in 5.4.33
ARM: dts: sun8i-a83t-tbs-a711: HM5065 doesn't like such a high voltage
bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
ARM: dts: Fix dm814x Ethernet by changing to use rgmii-id mode
bpf: Fix deadlock with rq_lock in bpf_send_signal()
iwlwifi: mvm: Fix rate scale NSS configuration
Input: tm2-touchkey - add support for Coreriver TC360 variant
soc: fsl: dpio: register dpio irq handlers after dpio create
rxrpc: Abstract out the calculation of whether there's Tx space
rxrpc: Fix call interruptibility handling
net: stmmac: platform: Fix misleading interrupt error msg
net: vxge: fix wrong __VA_ARGS__ usage
hinic: fix a bug of waitting for IO stopped
hinic: fix the bug of clearing event queue
hinic: fix out-of-order excution in arm cpu
hinic: fix wrong para of wait_for_completion_timeout
hinic: fix wrong value of MIN_SKB_LEN
selftests/net: add definition for SOL_DCCP to fix compilation errors for old libc
cxgb4/ptp: pass the sign of offset delta in FW CMD
drm/scheduler: fix rare NULL ptr race
cfg80211: Do not warn on same channel at the end of CSA
qlcnic: Fix bad kzalloc null test
i2c: st: fix missing struct parameter description
i2c: pca-platform: Use platform_irq_get_optional
media: rc: add keymap for Videostrong KII Pro
cpufreq: imx6q: Fixes unwanted cpu overclocking on i.MX6ULL
staging: wilc1000: avoid double unlocking of 'wilc->hif_cs' mutex
media: venus: hfi_parser: Ignore HEVC encoding for V1
firmware: arm_sdei: fix double-lock on hibernate with shared events
null_blk: Fix the null_add_dev() error path
null_blk: Handle null_add_dev() failures properly
null_blk: fix spurious IO errors after failed past-wp access
media: imx: imx7_mipi_csis: Power off the source when stopping streaming
media: imx: imx7-media-csi: Fix video field handling
xhci: bail out early if driver can't accress host in resume
ACPI: EC: Do not clear boot_ec_is_ecdt in acpi_ec_add()
x86: Don't let pgprot_modify() change the page encryption bit
dma-mapping: Fix dma_pgprot() for unencrypted coherent pages
block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
debugfs: Check module state before warning in {full/open}_proxy_open()
irqchip/versatile-fpga: Handle chained IRQs properly
time/sched_clock: Expire timer in hardirq context
media: allegro: fix type of gop_length in channel_create message
sched: Avoid scale real weight down to zero
selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
PCI/switchtec: Fix init_completion race condition with poll_wait()
block, bfq: move forward the getting of an extra ref in bfq_bfqq_move
media: i2c: video-i2c: fix build errors due to 'imply hwmon'
libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
pstore/platform: fix potential mem leak if pstore_init_fs failed
gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty
gfs2: Don't demote a glock until its revokes are written
cpufreq: imx6q: fix error handling
x86/boot: Use unsigned comparison for addresses
efi/x86: Ignore the memory attributes table on i386
genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
block: Fix use-after-free issue accessing struct io_cq
media: i2c: ov5695: Fix power on and off sequences
usb: dwc3: core: add support for disabling SS instances in park mode
irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency
md: check arrays is suspended in mddev_detach before call quiesce operations
firmware: fix a double abort case with fw_load_sysfs_fallback
spi: spi-fsl-dspi: Replace interruptible wait queue with a simple completion
locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
block, bfq: fix use-after-free in bfq_idle_slice_timer_body
btrfs: qgroup: ensure qgroup_rescan_running is only set when the worker is at least queued
btrfs: remove a BUG_ON() from merge_reloc_roots()
btrfs: restart relocate_tree_blocks properly
btrfs: track reloc roots based on their commit root bytenr
ASoC: fix regwmask
ASoC: dapm: connect virtual mux with default value
ASoC: dpcm: allow start or stop during pause for backend
ASoC: topology: use name_prefix for new kcontrol
usb: gadget: f_fs: Fix use after free issue as part of queue failure
usb: gadget: composite: Inform controller driver of self-powered
ALSA: usb-audio: Add mixer workaround for TRX40 and co
ALSA: hda: Add driver blacklist
ALSA: hda: Fix potential access overflow in beep helper
ALSA: ice1724: Fix invalid access for enumerated ctl items
ALSA: pcm: oss: Fix regression by buffer overflow fix
ALSA: hda/realtek: Enable mute LED on an HP system
ALSA: hda/realtek - a fake key event is triggered by running shutup
ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
ALSA: hda/realtek - Set principled PC Beep configuration for ALC256
ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
ALSA: hda/realtek - Add quirk for Lenovo Carbon X1 8th gen
ALSA: hda/realtek - Add quirk for MSI GL63
media: venus: firmware: Ignore secure call error on first resume
media: hantro: Read be32 words starting at every fourth byte
media: ti-vpe: cal: fix disable_irqs to only the intended target
media: ti-vpe: cal: fix a kernel oops when unloading module
seccomp: Add missing compat_ioctl for notify
acpi/x86: ignore unspecified bit positions in the ACPI global lock field
ACPICA: Allow acpi_any_gpe_status_set() to skip one GPE
ACPI: PM: s2idle: Refine active GPEs check
thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
nvmet-tcp: fix maxh2cdata icresp parameter
nvme-fc: Revert "add module to ops template to allow module references"
efi/x86: Add TPM related EFI tables to unencrypted mapping checks
PCI: pciehp: Fix indefinite wait on sysfs requests
PCI/ASPM: Clear the correct bits when enabling L1 substates
PCI: Add boot interrupt quirk mechanism for Xeon chipsets
PCI: qcom: Fix the fixup of PCI_VENDOR_ID_QCOM
PCI: endpoint: Fix for concurrent memory allocation in OB address region
sched/fair: Fix enqueue_task_fair warning
tpm: Don't make log failures fatal
tpm: tpm1_bios_measurements_next should increase position index
tpm: tpm2_bios_measurements_next should increase position index
KEYS: reaching the keys quotas correctly
cpu/hotplug: Ignore pm_wakeup_pending() for disable_nonboot_cpus()
genirq/debugfs: Add missing sanity checks to interrupt injection
irqchip/versatile-fpga: Apply clear-mask earlier
io_uring: remove bogus RLIMIT_NOFILE check in file registration
pstore: pstore_ftrace_seq_next should increase position index
MIPS/tlbex: Fix LDDIR usage in setup_pw() for Loongson-3
MIPS: OCTEON: irq: Fix potential NULL pointer dereference
PM / Domains: Allow no domain-idle-states DT property in genpd when parsing
PM: sleep: wakeup: Skip wakeup_source_sysfs_remove() if device is not there
ath9k: Handle txpower changes even when TPC is disabled
signal: Extend exec_id to 64bits
x86/tsc_msr: Use named struct initializers
x86/tsc_msr: Fix MSR_FSB_FREQ mask for Cherry Trail devices
x86/tsc_msr: Make MSR derived TSC frequency more accurate
x86/entry/32: Add missing ASM_CLAC to general_protection entry
platform/x86: asus-wmi: Support laptops where the first battery is named BATT
KVM: nVMX: Properly handle userspace interrupt window request
KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
KVM: s390: vsie: Fix delivery of addressing exceptions
KVM: x86: Allocate new rmap and large page tracking when moving memslot
KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support
KVM: x86: Gracefully handle __vmalloc() failure during VM allocation
KVM: VMX: Add a trampoline to fix VMREAD error handling
KVM: VMX: fix crash cleanup when KVM wasn't used
smb3: fix performance regression with setting mtime
CIFS: Fix bug which the return value by asynchronous read is error
mtd: spinand: Stop using spinand->oobbuf for buffering bad block markers
mtd: spinand: Do not erase the block before writing a bad block marker
btrfs: Don't submit any btree write bio if the fs has errors
Btrfs: fix crash during unmount due to race with delayed inode workers
btrfs: reloc: clean dirty subvols if we fail to start a transaction
btrfs: set update the uuid generation as soon as possible
btrfs: drop block from cache on error in relocation
btrfs: fix missing file extent item for hole after ranged fsync
btrfs: unset reloc control if we fail to recover
btrfs: fix missing semaphore unlock in btrfs_sync_file
btrfs: use nofs allocations for running delayed items
remoteproc: qcom_q6v5_mss: Don't reassign mpss region on shutdown
remoteproc: qcom_q6v5_mss: Reload the mba region on coredump
remoteproc: Fix NULL pointer dereference in rproc_virtio_notify
crypto: rng - Fix a refcounting bug in crypto_rng_reset()
crypto: mxs-dcp - fix scatterlist linearization for hash
erofs: correct the remaining shrink objects
io_uring: honor original task RLIMIT_FSIZE
mmc: sdhci-of-esdhc: fix esdhc_reset() for different controller versions
powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init()
tools: gpio: Fix out-of-tree build regression
net: qualcomm: rmnet: Allow configuration updates to existing devices
arm64: dts: allwinner: h6: Fix PMU compatible
sched/core: Remove duplicate assignment in sched_tick_remote()
arm64: dts: allwinner: h5: Fix PMU compatible
mm, memcg: do not high throttle allocators based on wraparound
dm writecache: add cond_resched to avoid CPU hangs
dm integrity: fix a crash with unusually large tag size
dm verity fec: fix memory leak in verity_fec_dtr
dm clone: Add overflow check for number of regions
dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
XArray: Fix xas_pause for large multi-index entries
xarray: Fix early termination of xas_for_each_marked
crypto: caam/qi2 - fix chacha20 data size error
crypto: caam - update xts sector size for large input length
crypto: ccree - protect against empty or NULL scatterlists
crypto: ccree - only try to map auth tag if needed
crypto: ccree - dec auth tag size from cryptlen map
scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point
scsi: ufs: fix Auto-Hibern8 error detection
scsi: lpfc: Fix lpfc_io_buf resource leak in lpfc_get_scsi_buf_s4 error path
ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board
arm64: dts: ti: k3-am65: Add clocks to dwc3 nodes
arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
selftests: vm: drop dependencies on page flags from mlock2 tests
selftests/vm: fix map_hugetlb length used for testing read and write
selftests/powerpc: Add tlbie_test in .gitignore
vfio: platform: Switch to platform_get_irq_optional()
drm/i915/gem: Flush all the reloc_gpu batch
drm/etnaviv: rework perfmon query infrastructure
drm: Remove PageReserved manipulation from drm_pci_alloc
drm/amdgpu/powerplay: using the FCLK DPM table to set the MCLK
drm/amdgpu: unify fw_write_wait for new gfx9 asics
powerpc/pseries: Avoid NULL pointer dereference when drmem is unavailable
nfsd: fsnotify on rmdir under nfsd/clients/
NFS: Fix use-after-free issues in nfs_pageio_add_request()
NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
ext4: fix a data race at inode->i_blocks
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
ocfs2: no need try to truncate file beyond i_size
perf tools: Support Python 3.8+ in Makefile
s390/diag: fix display of diagnose call statistics
Input: i8042 - add Acer Aspire 5738z to nomux list
ftrace/kprobe: Show the maxactive number on kprobe_events
clk: ingenic/jz4770: Exit with error if CGU init failed
clk: ingenic/TCU: Fix round_rate returning error
kmod: make request_module() return an error when autoloading is disabled
cpufreq: powernv: Fix use-after-free
hfsplus: fix crash and filesystem corruption when deleting files
libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
ipmi: fix hung processes in __get_guid()
xen/blkfront: fix memory allocation flags in blkfront_setup_indirect()
powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries
powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs
powerpc/64: Setup a paca before parsing device tree etc.
powerpc/xive: Fix xmon support on the PowerNV platform
powerpc/kprobes: Ignore traps that happened in real mode
powerpc/64: Prevent stack protection in early boot
scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
powerpc: Make setjmp/longjmp signature standard
arm64: Always force a branch protection mode when the compiler has one
dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
dm clone: replace spin_lock_irqsave with spin_lock_irq
dm clone: Fix handling of partial region discards
dm clone: Add missing casts to prevent overflows and data corruption
scsi: lpfc: Add registration for CPU Offline/Online events
scsi: lpfc: Fix Fabric hostname registration if system hostname changes
scsi: lpfc: Fix configuration of BB credit recovery in service parameters
scsi: lpfc: Fix broken Credit Recovery after driver load
Revert "drm/dp_mst: Remove VCPI while disabling topology mgr"
drm/dp_mst: Fix clearing payload state on topology disable
drm/amdgpu: fix gfx hang during suspend with video playback (v2)
drm/i915/icl+: Don't enable DDI IO power on a TypeC port in TBT mode
powerpc/kasan: Fix kasan_remap_early_shadow_ro()
mmc: sdhci: Convert sdhci_set_timeout_irq() to non-static
mmc: sdhci: Refactor sdhci_set_timeout()
bpf: Fix tnum constraints for 32-bit comparisons
mfd: dln2: Fix sanity checking for endpoints
efi/x86: Fix the deletion of variables in mixed mode
ASoC: stm32: sai: Add missing cleanup
scsi: lpfc: fix inlining of lpfc_sli4_cleanup_poll_list()
Linux 5.4.33
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I6c37e2c64801a572781c46fc5883bcc74e6a7a1a
|
||
Scott Wood
|
1dbfae0095 |
sched/core: Remove duplicate assignment in sched_tick_remote()
commit 82e0516ce3a147365a5dd2a9bedd5ba43a18663d upstream.
A redundant "curr = rq->curr" was added; remove it.
Fixes: ebc0f83c78a2 ("timers/nohz: Update NOHZ load in remote tick")
Signed-off-by: Scott Wood <swood@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1580776558-12882-1-git-send-email-swood@redhat.com
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||
Vincent Guittot
|
524089fa70 |
sched/fair: Fix enqueue_task_fair warning
commit fe61468b2cbc2b7ce5f8d3bf32ae5001d4c434e9 upstream. When a cfs rq is throttled, the latter and its child are removed from the leaf list but their nr_running is not changed which includes staying higher than 1. When a task is enqueued in this throttled branch, the cfs rqs must be added back in order to ensure correct ordering in the list but this can only happens if nr_running == 1. When cfs bandwidth is used, we call unconditionnaly list_add_leaf_cfs_rq() when enqueuing an entity to make sure that the complete branch will be added. Similarly unthrottle_cfs_rq() can stop adding cfs in the list when a parent is throttled. Iterate the remaining entity to ensure that the complete branch will be added in the list. Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: stable@vger.kernel.org Cc: stable@vger.kernel.org #v5.1+ Link: https://lkml.kernel.org/r/20200306135257.25044-1-vincent.guittot@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Michael Wang
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dd39eadc71 |
sched: Avoid scale real weight down to zero
[ Upstream commit 26cf52229efc87e2effa9d788f9b33c40fb3358a ] During our testing, we found a case that shares no longer working correctly, the cgroup topology is like: /sys/fs/cgroup/cpu/A (shares=102400) /sys/fs/cgroup/cpu/A/B (shares=2) /sys/fs/cgroup/cpu/A/B/C (shares=1024) /sys/fs/cgroup/cpu/D (shares=1024) /sys/fs/cgroup/cpu/D/E (shares=1024) /sys/fs/cgroup/cpu/D/E/F (shares=1024) The same benchmark is running in group C & F, no other tasks are running, the benchmark is capable to consumed all the CPUs. We suppose the group C will win more CPU resources since it could enjoy all the shares of group A, but it's F who wins much more. The reason is because we have group B with shares as 2, since A->cfs_rq.load.weight == B->se.load.weight == B->shares/nr_cpus, so A->cfs_rq.load.weight become very small. And in calc_group_shares() we calculate shares as: load = max(scale_load_down(cfs_rq->load.weight), cfs_rq->avg.load_avg); shares = (tg_shares * load) / tg_weight; Since the 'cfs_rq->load.weight' is too small, the load become 0 after scale down, although 'tg_shares' is 102400, shares of the se which stand for group A on root cfs_rq become 2. While the se of D on root cfs_rq is far more bigger than 2, so it wins the battle. Thus when scale_load_down() scale real weight down to 0, it's no longer telling the real story, the caller will have the wrong information and the calculation will be buggy. This patch add check in scale_load_down(), so the real weight will be >= MIN_SHARES after scale, after applied the group C wins as expected. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Link: https://lkml.kernel.org/r/38e8e212-59a1-64b2-b247-b6d0b52d8dc1@linux.alibaba.com Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Qais Yousef
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75fdd658cb |
UPSTREAM: sched/rt: cpupri_find: Trigger a full search as fallback
If we failed to find a fitting CPU, in cpupri_find(), we only fallback to the level we found a hit at. But Steve suggested to fallback to a second full scan instead as this could be a better effort. https://lore.kernel.org/lkml/20200304135404.146c56eb@gandalf.local.home/ We trigger the 2nd search unconditionally since the argument about triggering a full search is that the recorded fall back level might have become empty by then. Which means storing any data about what happened would be meaningless and stale. I had a humble try at timing it and it seemed okay for the small 6 CPUs system I was running on https://lore.kernel.org/lkml/20200305124324.42x6ehjxbnjkklnh@e107158-lin.cambridge.arm.com/ On large system this second full scan could be expensive. But there are no users outside capacity awareness for this fitness function at the moment. Heterogeneous systems tend to be small with 8cores in total. Bug: 120440300 Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lkml.kernel.org/r/20200310142219.syxzn5ljpdxqtbgx@e107158-lin.cambridge.arm.com (cherry picked from commit e94f80f6c49020008e6fa0f3d4b806b8595d17d8) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I94a3abf1440f20f57d8fe9ba1bb00e1d05221565 |
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Qais Yousef
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a6ec67b2fc |
UPSTREAM: sched/rt: Remove unnecessary push for unfit tasks
In task_woken_rt() and switched_to_rto() we try trigger push-pull if the task is unfit. But the logic is found lacking because if the task was the only one running on the CPU, then rt_rq is not in overloaded state and won't trigger a push. The necessity of this logic was under a debate as well, a summary of the discussion can be found in the following thread: https://lore.kernel.org/lkml/20200226160247.iqvdakiqbakk2llz@e107158-lin.cambridge.arm.com/ Remove the logic for now until a better approach is agreed upon. Bug: 120440300 Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-6-qais.yousef@arm.com (cherry picked from commit d94a9df49069ba8ff7c4aaeca1229e6471a01a15) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Ia49173b7be5dbd95e41cb1ddf248760975ad3355 |
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Qais Yousef
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063d4fb3fd |
UPSTREAM: sched/rt: Allow pulling unfitting task
When implemented RT Capacity Awareness; the logic was done such that if a task was running on a fitting CPU, then it was sticky and we would try our best to keep it there. But as Steve suggested, to adhere to the strict priority rules of RT class; allow pulling an RT task to unfitting CPU to ensure it gets a chance to run ASAP. Bug: 120440300 LINK: https://lore.kernel.org/lkml/20200203111451.0d1da58f@oasis.local.home/ Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-5-qais.yousef@arm.com (cherry picked from commit 98ca645f824301bde72e0a51cdc8bdbbea6774a5) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Ifa1b1529690e190c7ad209643fb70532d8c3b492 |
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Qais Yousef
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e1c68ebed9 |
UPSTREAM: sched/rt: Optimize cpupri_find() on non-heterogenous systems
By introducing a new cpupri_find_fitness() function that takes the fitness_fn as an argument and only called when asym_system static key is enabled. cpupri_find() is now a wrapper function that calls cpupri_find_fitness() passing NULL as a fitness_fn, hence disabling the logic that handles fitness by default. Bug: 120440300 LINK: https://lore.kernel.org/lkml/c0772fca-0a4b-c88d-fdf2-5715fcf8447b@arm.com/ Reported-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-4-qais.yousef@arm.com (cherry picked from commit a1bd02e1f28b1939cac8c64072a0e578c3cbc345) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I8d72829d0026219ad7d46633c30cb2653343360c |
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Qais Yousef
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a3b3fe50f5 |
UPSTREAM: sched/rt: Re-instate old behavior in select_task_rq_rt()
When RT Capacity Aware support was added, the logic in select_task_rq_rt was modified to force a search for a fitting CPU if the task currently doesn't run on one. But if the search failed, and the search was only triggered to fulfill the fitness request; we could end up selecting a new CPU unnecessarily. Fix this and re-instate the original behavior by ensuring we bail out in that case. This behavior change only affected asymmetric systems that are using util_clamp to implement capacity aware. None asymmetric systems weren't affected. Bug: 120440300 LINK: https://lore.kernel.org/lkml/20200218041620.GD28029@codeaurora.org/ Reported-by: Pavan Kondeti <pkondeti@codeaurora.org> Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-3-qais.yousef@arm.com (cherry picked from commit b28bc1e002c23ff8a4999c4a2fb1d4d412bc6f5e) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: Ie3e9e56fcf7d92a1552828b20a5d9d827c030099 |
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Qais Yousef
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0abe667623 |
UPSTREAM: sched/rt: cpupri_find: Implement fallback mechanism for !fit case
When searching for the best lowest_mask with a fitness_fn passed, make
sure we record the lowest_level that returns a valid lowest_mask so that
we can use that as a fallback in case we fail to find a fitting CPU at
all levels.
The intention in the original patch was not to allow a down migration to
unfitting CPU. But this missed the case where we are already running on
unfitting one.
With this change now RT tasks can still move between unfitting CPUs when
they're already running on such CPU.
And as Steve suggested; to adhere to the strict priority rules of RT, if
a task is already running on a fitting CPU but due to priority it can't
run on it, allow it to downmigrate to unfitting CPU so it can run.
Bug: 120440300
Reported-by: Pavan Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fixes: 804d402fb6f6 ("sched/rt: Make RT capacity-aware")
Link: https://lkml.kernel.org/r/20200302132721.8353-2-qais.yousef@arm.com
Link: https://lore.kernel.org/lkml/20200203142712.a7yvlyo2y3le5cpn@e107158-lin/
(cherry picked from commit d9cb236b9429044dc694ea70a50163ddd283cea6)
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: Ifa10286907644a01e75e37c9f523188fd7b43469
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Todd Kjos
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669d93f855 |
Revert "sched/core: Prevent race condition between cpuset and __sched_setscheduler()"
This reverts commit
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Greg Kroah-Hartman
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ce5de62e20 |
This is the 5.4.24 stable release
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dsa: b53: Ensure the default VID is untagged net: fib_rules: Correctly set table field when table number exceeds 8 bits net: macb: ensure interface is not suspended on at91rm9200 net: mscc: fix in frame extraction net: phy: restore mdio regs in the iproc mdio driver net: sched: correct flower port blocking net/tls: Fix to avoid gettig invalid tls record nfc: pn544: Fix occasional HW initialization failure qede: Fix race between rdma destroy workqueue and link change event Revert "net: dev: introduce support for sch BYPASS for lockless qdisc" udp: rehash on disconnect sctp: move the format error check out of __sctp_sf_do_9_1_abort bnxt_en: Improve device shutdown method. bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs. bonding: add missing netdev_update_lockdep_key() net: export netdev_next_lower_dev_rcu() bonding: fix lockdep warning in bond_get_stats() ipv6: Fix route replacement with dev-only route ipv6: Fix nlmsg_flags when splitting a multipath route ipmi:ssif: Handle a possible NULL pointer reference drm/msm: Set dma maximum segment size for mdss sched/core: Don't skip remote tick for idle CPUs timers/nohz: Update NOHZ load in remote tick sched/fair: Prevent unlimited runtime on throttled group dax: pass NOWAIT flag to iomap_apply mac80211: consider more elements in parsing CRC cfg80211: check wiphy driver existence for drvinfo report s390/zcrypt: fix card and queue total counter wrap qmi_wwan: re-add DW5821e pre-production variant qmi_wwan: unconditionally reject 2 ep interfaces NFSv4: Fix races between open and dentry revalidation perf/smmuv3: Use platform_get_irq_optional() for wired interrupt perf/x86/intel: Add Elkhart Lake support perf/x86/cstate: Add Tremont support perf/x86/msr: Add Tremont support ceph: do not execute direct write in parallel if O_APPEND is specified ARM: dts: sti: fixup sound frame-inversion for stihxxx-b2120.dtsi drm/amd/display: Do not set optimized_require to false after plane disable RDMA/siw: Remove unwanted WARN_ON in siw_cm_llp_data_ready() drm/amd/display: Check engine is not NULL before acquiring drm/amd/display: Limit minimum DPPCLK to 100MHz. drm/amd/display: Add initialitions for PLL2 clock source amdgpu: Prevent build errors regarding soft/hard-float FP ABI tags soc/tegra: fuse: Fix build with Tegra194 configuration i40e: Fix the conditional for i40e_vc_validate_vqs_bitmaps net: ena: fix potential crash when rxfh key is NULL net: ena: fix uses of round_jiffies() net: ena: add missing ethtool TX timestamping indication net: ena: fix incorrect default RSS key net: ena: rss: do not allocate key when not supported net: ena: rss: fix failure to get indirection table net: ena: rss: store hash function as values and not bits net: ena: fix incorrectly saving queue numbers when setting RSS indirection table net: ena: fix corruption of dev_idx_to_host_tbl net: ena: ethtool: use correct value for crc32 hash net: ena: ena-com.c: prevent NULL pointer dereference ice: update Unit Load Status bitmask to check after reset cifs: Fix mode output in debugging statements cfg80211: add missing policy for NL80211_ATTR_STATUS_CODE mac80211: fix wrong 160/80+80 MHz setting net: hns3: add management table after IMP reset net: hns3: fix a copying IPv6 address error in hclge_fd_get_flow_tuples() nvme/tcp: fix bug on double requeue when send fails nvme: prevent warning triggered by nvme_stop_keep_alive nvme/pci: move cqe check after device shutdown ext4: potential crash on allocation error in ext4_alloc_flex_bg_array() audit: fix error handling in audit_data_to_entry() audit: always check the netlink payload length in audit_receive_msg() ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro ACPI: watchdog: Fix gas->access_width usage KVM: VMX: check descriptor table exits on instruction emulation HID: ite: Only bind to keyboard USB interface on Acer SW5-012 keyboard dock HID: core: fix off-by-one memset in hid_report_raw_event() HID: core: increase HID report buffer size to 8KiB drm/amdgpu: Drop DRIVER_USE_AGP drm/radeon: Inline drm_get_pci_dev macintosh: therm_windtunnel: fix regression when instantiating devices tracing: Disable trace_printk() on post poned tests Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs" amdgpu/gmc_v9: save/restore sdpif regs during S3 cpufreq: Fix policy initialization for internal governor drivers io_uring: fix 32-bit compatability with sendmsg/recvmsg netfilter: ipset: Fix "INFO: rcu detected stall in hash_xxx" reports net/smc: transfer fasync_list in case of fallback vhost: Check docket sk_family instead of call getname netfilter: ipset: Fix forceadd evaluation path netfilter: xt_hashlimit: reduce hashlimit_mutex scope for htable_put() HID: alps: Fix an error handling path in 'alps_input_configured()' HID: hiddev: Fix race in in hiddev_disconnect() MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()' i2c: altera: Fix potential integer overflow i2c: jz4780: silence log flood on txabrt drm/i915/gvt: Fix orphan vgpu dmabuf_objs' lifetime drm/i915/gvt: Separate display reset from ALL_ENGINES reset nl80211: fix potential leak in AP start mac80211: Remove a redundant mutex unlock kbuild: fix DT binding schema rule to detect command line changes hv_netvsc: Fix unwanted wakeup in netvsc_attach() usb: charger: assign specific number for enum value nvme-pci: Hold cq_poll_lock while completing CQEs s390/qeth: vnicc Fix EOPNOTSUPP precedence net: netlink: cap max groups which will be considered in netlink_bind() net: atlantic: fix use after free kasan warn net: atlantic: fix potential error handling net: atlantic: fix out of range usage of active_vlans array net/smc: no peer ID in CLC decline for SMCD net: ena: make ena rxfh support ETH_RSS_HASH_NO_CHANGE selftests: Install settings files to fix TIMEOUT failures kbuild: remove header compile test kbuild: move headers_check rule to usr/include/Makefile kbuild: remove unneeded variable, single-all kbuild: make single target builds even faster namei: only return -ECHILD from follow_dotdot_rcu() mwifiex: drop most magic numbers from mwifiex_process_tdls_action_frame() mwifiex: delete unused mwifiex_get_intf_num() KVM: SVM: Override default MMIO mask if memory encryption is enabled KVM: Check for a bad hva before dropping into the ghc slow path sched/fair: Optimize select_idle_cpu f2fs: fix to add swap extent correctly RDMA/hns: Simplify the calculation and usage of wqe idx for post verbs RDMA/hns: Bugfix for posting a wqe with sge drivers: net: xgene: Fix the order of the arguments of 'alloc_etherdev_mqs()' ima: ima/lsm policy rule loading logic bug fixes kprobes: Set unoptimized flag after unoptimizing code lib/vdso: Make __arch_update_vdso_data() logic understandable lib/vdso: Update coarse timekeeper unconditionally pwm: omap-dmtimer: put_device() after of_find_device_by_node() perf hists browser: Restore ESC as "Zoom out" of DSO/thread/etc perf ui gtk: Add missing zalloc object x86/resctrl: Check monitoring static key in the MBM overflow handler KVM: x86: Remove spurious kvm_mmu_unload() from vcpu destruction path KVM: x86: Remove spurious clearing of async #PF MSR rcu: Allow only one expedited GP to run concurrently with wakeups ubifs: Fix ino_t format warnings in orphan_delete() thermal: db8500: Depromote debug print thermal: brcmstb_thermal: Do not use DT coefficients netfilter: nft_tunnel: no need to call htons() when dumping ports netfilter: nf_flowtable: fix documentation bus: tegra-aconnect: Remove PM_CLK dependency xfs: clear kernel only flags in XFS_IOC_ATTRMULTI_BY_HANDLE locking/lockdep: Fix lockdep_stats indentation problem mm/debug.c: always print flags in dump_page() mm/gup: allow FOLL_FORCE for get_user_pages_fast() mm/huge_memory.c: use head to check huge zero page mm, thp: fix defrag setting if newline is not used kvm: nVMX: VMWRITE checks VMCS-link pointer before VMCS field kvm: nVMX: VMWRITE checks unsupported field before read-only field blktrace: Protect q->blk_trace with RCU Linux 5.4.24 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I0b31557e16c72bd30d1e6938ed199918ff326d88 |
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Cheng Jian
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a25ae55390 |
sched/fair: Optimize select_idle_cpu
commit 60588bfa223ff675b95f866249f90616613fbe31 upstream. select_idle_cpu() will scan the LLC domain for idle CPUs, it's always expensive. so the next commit : |
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Vincent Guittot
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36b5fcc140 |
sched/fair: Prevent unlimited runtime on throttled group
[ Upstream commit 2a4b03ffc69f2dedc6388e9a6438b5f4c133a40d ]
When a running task is moved on a throttled task group and there is no
other task enqueued on the CPU, the task can keep running using 100% CPU
whatever the allocated bandwidth for the group and although its cfs rq is
throttled. Furthermore, the group entity of the cfs_rq and its parents are
not enqueued but only set as curr on their respective cfs_rqs.
We have the following sequence:
sched_move_task
-dequeue_task: dequeue task and group_entities.
-put_prev_task: put task and group entities.
-sched_change_group: move task to new group.
-enqueue_task: enqueue only task but not group entities because cfs_rq is
throttled.
-set_next_task : set task and group_entities as current sched_entity of
their cfs_rq.
Another impact is that the root cfs_rq runnable_load_avg at root rq stays
null because the group_entities are not enqueued. This situation will stay
the same until an "external" event triggers a reschedule. Let trigger it
immediately instead.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Ben Segall <bsegall@google.com>
Link: https://lkml.kernel.org/r/1579011236-31256-1-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Peter Zijlstra (Intel)
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166d6008fa |
timers/nohz: Update NOHZ load in remote tick
[ Upstream commit ebc0f83c78a2d26384401ecf2d2fa48063c0ee27 ] The way loadavg is tracked during nohz only pays attention to the load upon entering nohz. This can be particularly noticeable if full nohz is entered while non-idle, and then the cpu goes idle and stays that way for a long time. Use the remote tick to ensure that full nohz cpus report their deltas within a reasonable time. [ swood: Added changelog and removed recheck of stopped tick. ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Scott Wood <swood@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/1578736419-14628-3-git-send-email-swood@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Scott Wood
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5a309e3bf1 |
sched/core: Don't skip remote tick for idle CPUs
[ Upstream commit 488603b815a7514c7009e6fc339d74ed4a30f343 ] This will be used in the next patch to get a loadavg update from nohz cpus. The delta check is skipped because idle_sched_class doesn't update se.exec_start. Signed-off-by: Scott Wood <swood@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/1578736419-14628-2-git-send-email-swood@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Suren Baghdasaryan
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e61c236dcf |
sched/psi: Fix OOB write when writing 0 bytes to PSI files
commit 6fcca0fa48118e6d63733eb4644c6cd880c15b8f upstream. Issuing write() with count parameter set to 0 on any file under /proc/pressure/ will cause an OOB write because of the access to buf[buf_size-1] when NUL-termination is performed. Fix this by checking for buf_size to be non-zero. Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Link: https://lkml.kernel.org/r/20200203212216.7076-1-surenb@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Suren Baghdasaryan
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e7ce229bd8 |
UPSTREAM: sched/psi: Fix OOB write when writing 0 bytes to PSI files
Issuing write() with count parameter set to 0 on any file under /proc/pressure/ will cause an OOB write because of the access to buf[buf_size-1] when NUL-termination is performed. Fix this by checking for buf_size to be non-zero. Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Link: https://lkml.kernel.org/r/20200203212216.7076-1-surenb@google.com (cherry picked from commit 6fcca0fa48118e6d63733eb4644c6cd880c15b8f) Bug: 148159562 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I9ec7acfc6e1083c677a95b0ea1c559ab50152873 |
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Greg Kroah-Hartman
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835bd1de9c |
This is the 5.4.22 stable release
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Merge 5.4.22 into android-5.4
Changes in 5.4.22
core: Don't skip generic XDP program execution for cloned SKBs
enic: prevent waking up stopped tx queues over watchdog reset
net/smc: fix leak of kernel memory to user space
net: dsa: tag_qca: Make sure there is headroom for tag
net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
drm/gma500: Fixup fbdev stolen size usage evaluation
ath10k: Fix qmi init error handling
wil6210: fix break that is never reached because of zero'ing of a retry counter
drm/qxl: Complete exception handling in qxl_device_init()
rcu/nocb: Fix dump_tree hierarchy print always active
rcu: Fix missed wakeup of exp_wq waiters
rcu: Fix data-race due to atomic_t copy-by-value
f2fs: preallocate DIO blocks when forcing buffered_io
f2fs: call f2fs_balance_fs outside of locked page
media: meson: add missing allocation failure check on new_buf
clk: meson: pll: Fix by 0 division in __pll_params_to_rate()
cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev()
brcmfmac: Fix use after free in brcmf_sdio_readframes()
PCI: Fix pci_add_dma_alias() bitmask size
drm/amd/display: Map ODM memory correctly when doing ODM combine
leds: pca963x: Fix open-drain initialization
ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT
ALSA: ctl: allow TLV read operation for callback type of element in locked case
gianfar: Fix TX timestamping with a stacked DSA driver
pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs
printk: fix exclusive_console replaying
drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank()
drm/msm/adreno: fix zap vs no-zap handling
pxa168fb: Fix the function used to release some memory in an error handling path
media: ov5640: Fix check for PLL1 exceeding max allowed rate
media: i2c: mt9v032: fix enum mbus codes and frame sizes
media: sun4i-csi: Deal with DRAM offset
media: sun4i-csi: Fix data sampling polarity handling
media: sun4i-csi: Fix [HV]sync polarity handling
clk: at91: sam9x60: fix programmable clock prescaler
powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number
clk: meson: meson8b: make the CCF use the glitch-free mali mux
gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
iommu/vt-d: Fix off-by-one in PASID allocation
x86/fpu: Deactivate FPU state after failure during state load
char/random: silence a lockdep splat with printk()
media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run()
kernel/module: Fix memleak in module_add_modinfo_attrs()
IB/core: Let IB core distribute cache update events
pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins
efi/x86: Map the entire EFI vendor string before copying it
MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
sparc: Add .exit.data section.
net: ethernet: ixp4xx: Standard module init
raid6/test: fix a compilation error
uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()
drm/amdgpu/sriov: workaround on rev_id for Navi12 under sriov
spi: fsl-lpspi: fix only one cs-gpio working
drm/nouveau/nouveau: fix incorrect sizeof on args.src an args.dst
usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe()
usb: dwc2: Fix IN FIFO allocation
clocksource/drivers/bcm2835_timer: Fix memory leak of timer
drm/amd/display: Clear state after exiting fixed active VRR state
kselftest: Minimise dependency of get_size on C library interfaces
jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
ext4: fix deadlock allocating bio_post_read_ctx from mempool
clk: ti: dra7: fix parent for gmac_clkctrl
x86/sysfb: Fix check for bad VRAM size
pwm: omap-dmtimer: Simplify error handling
udf: Allow writing to 'Rewritable' partitions
dmaengine: fsl-qdma: fix duplicated argument to &&
wan/hdlc_x25: fix skb handling
s390/pci: Fix possible deadlock in recover_store()
powerpc/iov: Move VF pdev fixup into pcibios_fixup_iov()
tracing: Fix tracing_stat return values in error handling paths
tracing: Fix very unlikely race of registering two stat tracers
ARM: 8952/1: Disable kmemleak on XIP kernels
ext4, jbd2: ensure panic when aborting with zero errno
ath10k: Correct the DMA direction for management tx buffers
rtw88: fix rate mask for 1SS chip
brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362
selftests: settings: tests can be in subsubdirs
rtc: i2c/spi: Avoid inclusion of REGMAP support when not needed
drm/amd/display: Retrain dongles when SINK_COUNT becomes non-zero
tracing: Simplify assignment parsing for hist triggers
nbd: add a flush_workqueue in nbd_start_device
KVM: s390: ENOTSUPP -> EOPNOTSUPP fixups
Btrfs: keep pages dirty when using btrfs_writepage_fixup_worker
drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store
block, bfq: do not plug I/O for bfq_queues with no proc refs
kconfig: fix broken dependency in randconfig-generated .config
clk: qcom: Don't overwrite 'cfg' in clk_rcg2_dfs_populate_freq()
clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode
bpf, sockhash: Synchronize_rcu before free'ing map
drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table
ath10k: correct the tlv len of ath10k_wmi_tlv_op_gen_config_pno_start
drm/amdgpu: Ensure ret is always initialized when using SOC15_WAIT_ON_RREG
drm/panel: simple: Add Logic PD Type 28 display support
arm64: dts: rockchip: Fix NanoPC-T4 cooling maps
modules: lockdep: Suppress suspicious RCU usage warning
ASoC: intel: sof_rt5682: Add quirk for number of HDMI DAI's
ASoC: intel: sof_rt5682: Add support for tgl-max98357a-rt5682
regulator: rk808: Lower log level on optional GPIOs being not available
net/wan/fsl_ucc_hdlc: reject muram offsets above 64K
NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().
arm64: dts: allwinner: H6: Add PMU mode
arm64: dts: allwinner: H5: Add PMU node
arm: dts: allwinner: H3: Add PMU node
opp: Free static OPPs on errors while adding them
selinux: ensure we cleanup the internal AVC counters on error in avc_insert()
arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core
padata: validate cpumask without removed CPU during offline
clk: imx: Add correct failure handling for clk based helpers
ARM: exynos_defconfig: Bring back explicitly wanted options
ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3
ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed
bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO
PCI: iproc: Apply quirk_paxc_bridge() for module as well as built-in
media: cx23885: Add support for AVerMedia CE310B
PCI: Add generic quirk for increasing D3hot delay
PCI: Increase D3 delay for AMD Ryzen5/7 XHCI controllers
Revert "nfp: abm: fix memory leak in nfp_abm_u32_knode_replace"
gpu/drm: ingenic: Avoid null pointer deference in plane atomic update
selftests/net: make so_txtime more robust to timer variance
media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling
samples/bpf: Set -fno-stack-protector when building BPF programs
r8169: check that Realtek PHY driver module is loaded
fore200e: Fix incorrect checks of NULL pointer dereference
netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy
ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status
PCI: Add nr_devfns parameter to pci_add_dma_alias()
PCI: Add DMA alias quirk for PLX PEX NTB
b43legacy: Fix -Wcast-function-type
ipw2x00: Fix -Wcast-function-type
iwlegacy: Fix -Wcast-function-type
rtlwifi: rtl_pci: Fix -Wcast-function-type
orinoco: avoid assertion in case of NULL pointer
drm/amdgpu: fix KIQ ring test fail in TDR of SRIOV
clk: qcom: smd: Add missing bimc clock
ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
nfsd: Clone should commit src file metadata too
scsi: ufs: Complete pending requests in host reset and restore path
scsi: aic7xxx: Adjust indentation in ahc_find_syncrate
crypto: inside-secure - add unspecified HAS_IOMEM dependency
drm/mediatek: handle events when enabling/disabling crtc
clk: renesas: rcar-gen3: Allow changing the RPC[D2] clocks
ARM: dts: r8a7779: Add device node for ARM global timer
selinux: ensure we cleanup the internal AVC counters on error in avc_update()
scsi: lpfc: Fix: Rework setting of fdmi symbolic node name registration
arm64: dts: qcom: db845c: Enable ath10k 8bit host-cap quirk
iommu/amd: Check feature support bit before accessing MSI capability registers
iommu/amd: Only support x2APIC with IVHD type 11h/40h
iommu/iova: Silence warnings under memory pressure
clk: actually call the clock init before any other callback of the clock
dmaengine: Store module owner in dma_device struct
dmaengine: imx-sdma: Fix memory leak
bpf: Print error message for bpftool cgroup show
net: phy: realtek: add logging for the RGMII TX delay configuration
crypto: chtls - Fixed memory leak
x86/vdso: Provide missing include file
PM / devfreq: exynos-ppmu: Fix excessive stack usage
PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency
drm/fbdev: Fallback to non tiled mode if all tiles not present
pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs
reset: uniphier: Add SCSSI reset control for each channel
ASoC: soc-topology: fix endianness issues
fbdev: fix numbering of fbcon options
RDMA/rxe: Fix error type of mmap_offset
clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock
ALSA: sh: Fix unused variable warnings
clk: Use parent node pointer during registration if necessary
clk: uniphier: Add SCSSI clock gate for each channel
ALSA: hda/realtek - Apply mic mute LED quirk for Dell E7xx laptops, too
ALSA: sh: Fix compile warning wrt const
net: phy: fixed_phy: fix use-after-free when checking link GPIO
tools lib api fs: Fix gcc9 stringop-truncation compilation error
vfio/spapr/nvlink2: Skip unpinning pages on error exit
ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.
ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch
iommu/vt-d: Match CPU and IOMMU paging mode
iommu/vt-d: Avoid sending invalid page response
drm/amdkfd: Fix permissions of hang_hws
mlx5: work around high stack usage with gcc
RDMA/hns: Avoid printing address of mtt page
drm: remove the newline for CRC source name.
usb: dwc3: use proper initializers for property entries
ARM: dts: stm32: Add power-supply for DSI panel on stm32f469-disco
usbip: Fix unsafe unaligned pointer usage
udf: Fix free space reporting for metadata and virtual partitions
drm/mediatek: Add gamma property according to hardware capability
staging: rtl8188: avoid excessive stack usage
IB/hfi1: Add software counter for ctxt0 seq drop
IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
efi/x86: Don't panic or BUG() on non-critical error conditions
rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
Input: edt-ft5x06 - work around first register access error
bnxt: Detach page from page pool before sending up the stack
x86/nmi: Remove irq_work from the long duration NMI handler
wan: ixp4xx_hss: fix compile-testing on 64-bit
clocksource: davinci: only enable clockevents once tim34 is initialized
arm64: dts: rockchip: fix dwmmc clock name for px30
arm64: dts: rockchip: add reg property to brcmf sub-nodes
ARM: dts: rockchip: add reg property to brcmf sub node for rk3188-bqedison2qc
ALSA: usb-audio: Add boot quirk for MOTU M Series
ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
raid6/test: fix a compilation warning
tty: synclinkmp: Adjust indentation in several functions
tty: synclink_gt: Adjust indentation in several functions
misc: xilinx_sdfec: fix xsdfec_poll()'s return type
visorbus: fix uninitialized variable access
driver core: platform: Prevent resouce overflow from causing infinite loops
driver core: Print device when resources present in really_probe()
ASoC: SOF: Intel: hda-dai: fix compilation warning in pcm_prepare
bpf: Return -EBADRQC for invalid map type in __bpf_tx_xdp_map
vme: bridges: reduce stack usage
drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new()
drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw
drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler
drm/nouveau/drm/ttm: Remove set but not used variable 'mem'
drm/nouveau/fault/gv100-: fix memory leak on module unload
dm thin: don't allow changing data device during thin-pool reload
gpiolib: Set lockdep class for hierarchical irq domains
drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add
perf/imx_ddr: Fix cpu hotplug state cleanup
usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
kbuild: remove *.tmp file when filechk fails
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
ALSA: usb-audio: unlock on error in probe
f2fs: set I_LINKABLE early to avoid wrong access by vfs
f2fs: free sysfs kobject
scsi: ufs: pass device information to apply_dev_quirks
scsi: ufs-mediatek: add apply_dev_quirks variant operation
scsi: iscsi: Don't destroy session if there are outstanding connections
crypto: essiv - fix AEAD capitalization and preposition use in help text
ALSA: usb-audio: add implicit fb quirk for MOTU M Series
RDMA/mlx5: Don't fake udata for kernel path
arm64: lse: fix LSE atomics with LLVM's integrated assembler
arm64: fix alternatives with LLVM's integrated assembler
drm/amd/display: fixup DML dependencies
EDAC/sifive: Fix return value check in ecc_register()
KVM: PPC: Remove set but not used variable 'ra', 'rs', 'rt'
arm64: dts: ti: k3-j721e-main: Add missing power-domains for smmu
sched/core: Fix size of rq::uclamp initialization
sched/topology: Assert non-NUMA topology masks don't (partially) overlap
perf/x86/amd: Constrain Large Increment per Cycle events
watchdog/softlockup: Enforce that timestamp is valid on boot
debugobjects: Fix various data races
ASoC: SOF: Intel: hda: Fix SKL dai count
regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage
f2fs: fix memleak of kobject
x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional
cmd64x: potential buffer overflow in cmd64x_program_timings()
ide: serverworks: potential overflow in svwks_set_pio_mode()
pwm: Remove set but not set variable 'pwm'
btrfs: fix possible NULL-pointer dereference in integrity checks
btrfs: safely advance counter when looking up bio csums
btrfs: device stats, log when stats are zeroed
module: avoid setting info->name early in case we can fall back to info->mod->name
remoteproc: Initialize rproc_class before use
regulator: core: Fix exported symbols to the exported GPL version
irqchip/mbigen: Set driver .suppress_bind_attrs to avoid remove problems
ALSA: hda/hdmi - add retry logic to parse_intel_hdmi()
spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations
kbuild: use -S instead of -E for precise cc-option test in Kconfig
objtool: Fix ARCH=x86_64 build error
x86/decoder: Add TEST opcode to Group3-2
s390: adjust -mpacked-stack support check for clang 10
s390/ftrace: generate traced function stack frame
driver core: platform: fix u32 greater or equal to zero comparison
bpf, btf: Always output invariant hit in pahole DWARF to BTF transform
ALSA: hda - Add docking station support for Lenovo Thinkpad T420s
sunrpc: Fix potential leaks in sunrpc_cache_unhash()
drm/nouveau/mmu: fix comptag memory leak
powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV
media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value
btrfs: separate definition of assertion failure handlers
btrfs: Fix split-brain handling when changing FSID to metadata uuid
bcache: cached_dev_free needs to put the sb page
bcache: rework error unwinding in register_bcache
bcache: fix use-after-free in register_bcache()
iommu/vt-d: Remove unnecessary WARN_ON_ONCE()
alarmtimer: Make alarmtimer platform device child of RTC device
selftests: bpf: Reset global state between reuseport test runs
jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
jbd2: make sure ESHUTDOWN to be recorded in the journal superblock
powerpc/pseries/lparcfg: Fix display of Maximum Memory
selftests/eeh: Bump EEH wait time to 60s
ARM: 8951/1: Fix Kexec compilation issue.
ALSA: usb-audio: add quirks for Line6 Helix devices fw>=2.82
hostap: Adjust indentation in prism2_hostapd_add_sta
rtw88: fix potential NULL skb access in TX ISR
iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop
cifs: fix unitialized variable poential problem with network I/O cache lock patch
cifs: Fix mount options set in automount
cifs: fix NULL dereference in match_prepath
bpf: map_seq_next should always increase position index
powerpc/mm: Don't log user reads to 0xffffffff
ceph: check availability of mds cluster on mount after wait timeout
rbd: work around -Wuninitialized warning
drm/amd/display: do not allocate display_mode_lib unnecessarily
irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
char: hpet: Fix out-of-bounds read bug
ftrace: fpid_next() should increase position index
trigger_next should increase position index
radeon: insert 10ms sleep in dce5_crtc_load_lut
powerpc: Do not consider weak unresolved symbol relocations as bad
btrfs: do not do delalloc reservation under page lock
ocfs2: make local header paths relative to C files
ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
lib/scatterlist.c: adjust indentation in __sg_alloc_table
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
bcache: fix memory corruption in bch_cache_accounting_clear()
bcache: explicity type cast in bset_bkey_last()
bcache: fix incorrect data type usage in btree_flush_write()
irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
nvmet: Pass lockdep expression to RCU lists
nvme-pci: remove nvmeq->tags
iwlwifi: mvm: Fix thermal zone registration
iwlwifi: mvm: Check the sta is not NULL in iwl_mvm_cfg_he_sta()
asm-generic/tlb: add missing CONFIG symbol
microblaze: Prevent the overflow of the start
brd: check and limit max_part par
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_latency
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage
NFS: Fix memory leaks
help_next should increase position index
i40e: Relax i40e_xsk_wakeup's return value when PF is busy
cifs: log warning message (once) if out of disk space
virtio_balloon: prevent pfn array overflow
fuse: don't overflow LLONG_MAX with end offset
mlxsw: spectrum_dpipe: Add missing error path
s390/pci: Recover handle in clp_set_pci_fn()
drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2)
bcache: properly initialize 'path' and 'err' in register_bcache()
rtc: Kconfig: select REGMAP_I2C when necessary
Linux 5.4.22
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iaeb3945493ecc81a0ae90ef87b19ceb2caf48164
|
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Valentin Schneider
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f2323c374e |
sched/topology: Assert non-NUMA topology masks don't (partially) overlap
[ Upstream commit ccf74128d66ce937876184ad55db2e0276af08d3 ]
topology.c::get_group() relies on the assumption that non-NUMA domains do
not partially overlap. Zeng Tao pointed out in [1] that such topology
descriptions, while completely bogus, can end up being exposed to the
scheduler.
In his example (8 CPUs, 2-node system), we end up with:
MC span for CPU3 == 3-7
MC span for CPU4 == 4-7
The first pass through get_group(3, sdd@MC) will result in the following
sched_group list:
3 -> 4 -> 5 -> 6 -> 7
^ /
`----------------'
And a later pass through get_group(4, sdd@MC) will "corrupt" that to:
3 -> 4 -> 5 -> 6 -> 7
^ /
`-----------'
which will completely break things like 'while (sg != sd->groups)' when
using CPU3's base sched_domain.
There already are some architecture-specific checks in place such as
x86/kernel/smpboot.c::topology.sane(), but this is something we can detect
in the core scheduler, so it seems worthwhile to do so.
Warn and abort the construction of the sched domains if such a broken
topology description is detected. Note that this is somewhat
expensive (O(t.c²), 't' non-NUMA topology levels and 'c' CPUs) and could be
gated under SCHED_DEBUG if deemed necessary.
Testing
=======
Dietmar managed to reproduce this using the following qemu incantation:
$ qemu-system-aarch64 -kernel ./Image -hda ./qemu-image-aarch64.img \
-append 'root=/dev/vda console=ttyAMA0 loglevel=8 sched_debug' -smp \
cores=8 --nographic -m 512 -cpu cortex-a53 -machine virt -numa \
node,cpus=0-2,nodeid=0 -numa node,cpus=3-7,nodeid=1
alongside the following drivers/base/arch_topology.c hack (AIUI wouldn't be
needed if '-smp cores=X, sockets=Y' would work with qemu):
8<---
@@ -465,6 +465,9 @@ void update_siblings_masks(unsigned int cpuid)
if (cpuid_topo->package_id != cpu_topo->package_id)
continue;
+ if ((cpu < 4 && cpuid > 3) || (cpu > 3 && cpuid < 4))
+ continue;
+
cpumask_set_cpu(cpuid, &cpu_topo->core_sibling);
cpumask_set_cpu(cpu, &cpuid_topo->core_sibling);
8<---
[1]: https://lkml.kernel.org/r/1577088979-8545-1-git-send-email-prime.zeng@hisilicon.com
Reported-by: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200115160915.22575-1-valentin.schneider@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
||
Li Guanglei
|
5d13f62b9e |
sched/core: Fix size of rq::uclamp initialization
[ Upstream commit dcd6dffb0a75741471297724640733fa4e958d72 ]
rq::uclamp is an array of struct uclamp_rq, make sure we clear the
whole thing.
Fixes:
|
||
Morten Rasmussen
|
6bec3fbeac |
BACKPORT: sched/fair: Remove wake_cap()
Capacity-awareness in the wake-up path previously involved disabling
wake_affine in certain scenarios. We have just made select_idle_sibling()
capacity-aware, so this isn't needed anymore.
Remove wake_cap() entirely.
Bug: 120440300
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
[Changelog tweaks]
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
[Changelog tweaks]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200206191957.12325-5-valentin.schneider@arm.com
(cherry picked from commit 25ac227a25ac946e0356772012398cd1710a8bab)
[Fixed trivial conflict with
|
||
|
Valentin Schneider
|
7874cf9c9f |
UPSTREAM: sched/core: Remove for_each_lower_domain()
The last remaining user of this macro has just been removed, get rid of it. Bug: 120440300 Suggested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Quentin Perret <qperret@google.com> Link: https://lkml.kernel.org/r/20200206191957.12325-4-valentin.schneider@arm.com (cherry picked from commit afbcf99785a580e2cc089646e971deceb31a18b1) Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Change-Id: I554858a5dc278e666c47fb968942bc0ced8b94e8 |
||
|
Morten Rasmussen
|
8aa7b34bad |
UPSTREAM: sched/topology: Remove SD_BALANCE_WAKE on asymmetric capacity systems
SD_BALANCE_WAKE was previously added to lower sched_domain levels on
asymmetric CPU capacity systems by commit:
|
||
|
Morten Rasmussen
|
f042d57132 |
UPSTREAM: sched/fair: Add asymmetric CPU capacity wakeup scan
Issue
=====
On asymmetric CPU capacity topologies, we currently rely on wake_cap() to
drive select_task_rq_fair() towards either:
- its slow-path (find_idlest_cpu()) if either the previous or
current (waking) CPU has too little capacity for the waking task
- its fast-path (select_idle_sibling()) otherwise
Commit:
|
||
|
Greg Kroah-Hartman
|
4f48e3619d |
This is the 5.4.21 stable release
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl5NhBYACgkQONu9yGCS aT5hUg/8DzxLwZo3cTq0SMJxYcHORva9UIBvyuvrRNtJIOUxxAOP1IjVlhKKfSSR SDrrhnR2TzW+W1q+act7qn05xB53Xt/lhaItWy3BGe+dNCcn4xbgbja1GhfzdRrk p/mh4OLt5PslI9xZDdUXYcTNK27BRwcVrFoy9oFiVTXmqDv8vjg1l6wLpqkNFrZc d/0uszqYxOC7mUcA0mB6BO7ZeXkeVYpS3dJfAE/Cs8Q+BVMUOtWv9inFugpa40VQ q0FumY9/g/3WlcZhPIMVIRBOZietU7ICBJuAkIEsauYy7ZnW/h20m+wxrj2ehjEO muS8T86TVmYNQmpt1CjD8JL8micGo3hh9W6tRYXFjvOeOuSwwXYXMP7s+ljuMsro 8dEIZQsu7rkJNJsr8Jq6jXzSiutYoBiC5HLFKN2mv4cINJ579oO9rOgqRND1bVDp OevI7pQKPKHTehT7IHr20Y3f3PkKu7T4NVyRtREmMVLyw7+3qucweUER728VGeNz ntC1xhHKvomB+aO1RQExS8d3SLBixx62Adxw4+UKAf9SAmU59mVYjjla4hgoEa14 Li2QauvHCkul72QKybS8fvLlOf/Asz3acVBgJ49WsPwh9dDJYz55QzcvjXSqvRyR 7vfetr4x9SOrbCN5uTLRNJ2mHaV3zbVXi6ZSNPa/KtwcNJEkWLg= =XKCa -----END PGP SIGNATURE----- Merge 5.4.21 into android-5.4 Changes in 5.4.21 Input: synaptics - switch T470s to RMI4 by default Input: synaptics - enable SMBus on ThinkPad L470 Input: synaptics - remove the LEN0049 dmi id from topbuttonpad list ALSA: usb-audio: Fix UAC2/3 effect unit parsing ALSA: hda/realtek - Add more codec supported Headset Button ALSA: hda/realtek - Fix silent output on MSI-GL73 ALSA: usb-audio: Apply sample rate quirk for Audioengine D1 ACPI: EC: Fix flushing of pending work ACPI: PM: s2idle: Avoid possible race related to the EC GPE ACPICA: Introduce acpi_any_gpe_status_set() ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system ALSA: usb-audio: sound: usb: usb true/false for bool return type ALSA: usb-audio: Add clock validity quirk for Denon MC7000/MCX8000 ext4: don't assume that mmp_nodename/bdevname have NUL ext4: fix support for inode sizes > 1024 bytes ext4: fix checksum errors with indexed dirs ext4: add cond_resched() to ext4_protect_reserved_inode ext4: improve explanation of a mount failure caused by a misconfigured kernel Btrfs: fix race between using extent maps and merging them btrfs: ref-verify: fix memory leaks btrfs: print message when tree-log replay starts btrfs: log message when rw remount is attempted with unclean tree-log ARM: npcm: Bring back GPIOLIB support gpio: xilinx: Fix bug where the wrong GPIO register is written to arm64: ssbs: Fix context-switch when SSBS is present on all CPUs xprtrdma: Fix DMA scatter-gather list mapping imbalance cifs: make sure we do not overflow the max EA buffer size EDAC/sysfs: Remove csrow objects on errors EDAC/mc: Fix use-after-free and memleaks during device removal KVM: nVMX: Use correct root level for nested EPT shadow page tables perf/x86/amd: Add missing L2 misses event spec to AMD Family 17h's event map s390/pkey: fix missing length of protected key on return s390/uv: Fix handling of length extensions drm/vgem: Close use-after-free race in vgem_gem_create drm/panfrost: Make sure the shrinker does not reclaim referenced BOs bus: moxtet: fix potential stack buffer overflow nvme: fix the parameter order for nvme_get_log in nvme_get_fw_slot_info drivers: ipmi: fix off-by-one bounds check that leads to a out-of-bounds write IB/mlx5: Return failure when rts2rts_qp_counters_set_id is not supported IB/hfi1: Acquire lock to release TID entries when user file is closed IB/hfi1: Close window for pq and request coliding IB/rdmavt: Reset all QPs when the device is shut down IB/umad: Fix kernel crash while unloading ib_umad RDMA/core: Fix invalid memory access in spec_filter_size RDMA/iw_cxgb4: initiate CLOSE when entering TERM RDMA/hfi1: Fix memory leak in _dev_comp_vect_mappings_create RDMA/rxe: Fix soft lockup problem due to using tasklets in softirq RDMA/core: Fix protection fault in get_pkey_idx_qp_list s390/time: Fix clk type in get_tod_clock sched/uclamp: Reject negative values in cpu_uclamp_write() spmi: pmic-arb: Set lockdep class for hierarchical irq domains perf/x86/intel: Fix inaccurate period in context switch for auto-reload hwmon: (pmbus/ltc2978) Fix PMBus polling of MFR_COMMON definitions. mac80211: fix quiet mode activation in action frames cifs: fix mount option display for sec=krb5i arm64: dts: fast models: Fix FVP PCI interrupt-map property KVM: x86: Mask off reserved bit from #DB exception payload perf stat: Don't report a null stalled cycles per insn metric NFSv4.1 make cachethis=no for writes Revert "drm/sun4i: drv: Allow framebuffer modifiers in mode config" jbd2: move the clearing of b_modified flag to the journal_unmap_buffer() jbd2: do not clear the BH_Mapped flag when forgetting a metadata buffer ext4: choose hardlimit when softlimit is larger than hardlimit in ext4_statfs_project() KVM: x86/mmu: Fix struct guest_walker arrays for 5-level paging gpio: add gpiod_toggle_active_low() mmc: core: Rework wp-gpio handling Linux 5.4.21 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I5a17276dc0cad8748c87af9019be9ee4d3064f0e |
||
|
Qais Yousef
|
9f6f61c61a |
sched/uclamp: Reject negative values in cpu_uclamp_write()
commit b562d140649966d4daedd0483a8fe59ad3bb465a upstream.
The check to ensure that the new written value into cpu.uclamp.{min,max}
is within range, [0:100], wasn't working because of the signed
comparison
7301 if (req.percent > UCLAMP_PERCENT_SCALE) {
7302 req.ret = -ERANGE;
7303 return req;
7304 }
# echo -1 > cpu.uclamp.min
# cat cpu.uclamp.min
42949671.96
Cast req.percent into u64 to force the comparison to be unsigned and
work as intended in capacity_from_percent().
# echo -1 > cpu.uclamp.min
sh: write error: Numerical result out of range
Fixes:
|
||
|
Greg Kroah-Hartman
|
e736cc6873 |
This is the 5.4.20 stable release
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl5HElwACgkQONu9yGCS aT6GQBAAxBLl+L518k3/Jm7Fv5VGFtfk7QIJmLKSdI58Gj7aLib2CulB5dJpHu0Z uOJXEUKQoUC739MjS6IgrAUoee/GTgyeOS1gyI49IBVvrBgjQop/3FJ4Oe4EF6Wj aEy7xA1k1MRUM4XWy3PiMvIuaxWNWoEn22DS703adOKPEx2yS0sPtAf6RRRpzxW+ oWR9aJv5y+wKRi7frRvTJ8juQoeo67XHNQWBybv7v+th7KqF33EYk/faLJqTbqNd caJAG+DuGsu/oLcwlWEE5CZ8rP5OAOh12505J9XG5uXoqA2BrQFCTLW6okG1PUNI I+GugtMKWwOSP8dHkfq/jPKInG3H+mCwVW3wWzKfWBJwIi4NWokYK31SQty1BNBe if9ytUT97ykgkovVjVbu+X+wMnEes2JMrVyBAzY2cOK01KD2PUR/cLdZZXTil4A0 rEKXd+tJRN7+ko+z4EJRdstzNtB030tDeEUmwJSIlJoWPRROk69it8d4/OFXe+/u Le4T4V6w22tcP0H/2CtDSwTntDbjNoXWpTGzqp2HO0urObqZyX99leyCI8Ee9sRz 00B6ykAOnOMPdLmAGmpBXnhKRK89VlnfG5A/d609km4EPJuKZyX9KS6tZSwpJIAd 3W9FWaNyr8Z79BDJyeK0ftS5BD/WNGDLux7lylLzMsPAmF7YNsI= =Zp/p -----END PGP SIGNATURE----- Merge 5.4.20 into android-5.4 Changes in 5.4.20 ASoC: pcm: update FE/BE trigger order based on the command hv_sock: Remove the accept port restriction IB/mlx4: Fix memory leak in add_gid error flow IB/srp: Never use immediate data if it is disabled by a user IB/mlx4: Fix leak in id_map_find_del RDMA/netlink: Do not always generate an ACK for some netlink operations RDMA/i40iw: fix a potential NULL pointer dereference RDMA/core: Fix locking in ib_uverbs_event_read RDMA/uverbs: Verify MR access flags RDMA/cma: Fix unbalanced cm_id reference count during address resolve RDMA/umem: Fix ib_umem_find_best_pgsz() scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails PCI/IOV: Fix memory leak in pci_iov_add_virtfn() ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe PCI/switchtec: Use dma_set_mask_and_coherent() PCI/switchtec: Fix vep_vector_number ioread width PCI: tegra: Fix afi_pex2_ctrl reg offset for Tegra30 PCI: Don't disable bridge BARs when assigning bus resources PCI/AER: Initialize aer_fifo iwlwifi: mvm: avoid use after free for pmsr request bpftool: Don't crash on missing xlated program instructions bpf, sockmap: Don't sleep while holding RCU lock on tear-down bpf, sockhash: Synchronize_rcu before free'ing map selftests/bpf: Test freeing sockmap/sockhash with a socket in it bpf: Improve bucket_log calculation logic bpf, sockmap: Check update requirements after locking nfs: NFS_SWAP should depend on SWAP NFS: Revalidate the file size on a fatal write error NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes() NFS: Fix fix of show_nfs_errors NFSv4: pnfs_roc() must use cred_fscmp() to compare creds NFSv4: try lease recovery on NFS4ERR_EXPIRED NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals x86/boot: Handle malformed SRAT tables during early ACPI parsing rtc: hym8563: Return -EINVAL if the time is known to be invalid rtc: cmos: Stop using shared IRQ watchdog: qcom: Use platform_get_irq_optional() for bark irq ARC: [plat-axs10x]: Add missing multicast filter number to GMAC node platform/x86: intel_mid_powerbtn: Take a copy of ddata arm64: dts: qcom: msm8998: Fix tcsr syscon size arm64: dts: uDPU: fix broken ethernet ARM: dts: at91: Reenable UART TX pull-ups ARM: dts: am43xx: add support for clkout1 clock arm64: dts: renesas: r8a77990: ebisu: Remove clkout-lr-synchronous from sound arm64: dts: marvell: clearfog-gt-8k: fix switch cpu port node ARM: dts: meson8: use the actual frequency for the GPU's 182.1MHz OPP ARM: dts: meson8b: use the actual frequency for the GPU's 364MHz OPP ARM: dts: at91: sama5d3: fix maximum peripheral clock rates ARM: dts: at91: sama5d3: define clock rate range for tcb1 tools/power/acpi: fix compilation error soc: qcom: rpmhpd: Set 'active_only' for active only power domains Revert "powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests" powerpc/ptdump: Fix W+X verification call in mark_rodata_ro() powerpc/ptdump: Only enable PPC_CHECK_WX with STRICT_KERNEL_RWX powerpc/papr_scm: Fix leaking 'bus_desc.provider_name' in some paths powerpc/pseries/vio: Fix iommu_table use-after-free refcount warning powerpc/pseries: Allow not having ibm, hypertas-functions::hcall-multi-tce for DDW iommu/arm-smmu-v3: Populate VMID field for CMDQ_OP_TLBI_NH_VA ARM: at91: pm: use SAM9X60 PMC's compatible ARM: at91: pm: use of_device_id array to find the proper shdwc node KVM: arm/arm64: vgic-its: Fix restoration of unmapped collections ARM: 8949/1: mm: mark free_memmap as __init sched/uclamp: Fix a bug in propagating uclamp value in new cgroups arm64: cpufeature: Fix the type of no FP/SIMD capability arm64: cpufeature: Set the FP/SIMD compat HWCAP bits properly arm64: ptrace: nofpsimd: Fail FP/SIMD regset operations KVM: arm/arm64: Fix young bit from mmu notifier KVM: arm: Fix DFSR setting for non-LPAE aarch32 guests KVM: arm: Make inject_abt32() inject an external abort instead KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset KVM: arm64: pmu: Fix chained SW_INCR counters KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer arm64: nofpsmid: Handle TIF_FOREIGN_FPSTATE flag cleanly mtd: onenand_base: Adjust indentation in onenand_read_ops_nolock mtd: sharpslpart: Fix unsigned comparison to zero crypto: testmgr - don't try to decrypt uninitialized buffers crypto: artpec6 - return correct error code for failed setkey() crypto: atmel-sha - fix error handling when setting hmac key crypto: caam/qi2 - fix typo in algorithm's driver name drivers: watchdog: stm32_iwdg: set WDOG_HW_RUNNING at probe media: i2c: adv748x: Fix unsafe macros dt-bindings: iio: adc: ad7606: Fix wrong maxItems value bcache: avoid unnecessary btree nodes flushing in btree_flush_write() selinux: revert "stop passing MAY_NOT_BLOCK to the AVC upon follow_link" selinux: fix regression introduced by move_mount(2) syscall pinctrl: sh-pfc: r8a77965: Fix DU_DOTCLKIN3 drive/bias control pinctrl: sh-pfc: r8a7778: Fix duplicate SDSELF_B and SD1_CLK_B regmap: fix writes to non incrementing registers mfd: max77650: Select REGMAP_IRQ in Kconfig clk: meson: g12a: fix missing uart2 in regmap table dmaengine: axi-dmac: add a check for devm_regmap_init_mmio mwifiex: Fix possible buffer overflows in mwifiex_ret_wmm_get_status() mwifiex: Fix possible buffer overflows in mwifiex_cmd_append_vsie_tlv() libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held libertas: make lbs_ibss_join_existing() return error code on rates overflow selinux: fall back to ref-walk if audit is required Linux 5.4.20 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I68c0ac72422e279b38324afc91dc52df3eadc0f7 |
||
|
Qais Yousef
|
ba95651cef |
sched/uclamp: Fix a bug in propagating uclamp value in new cgroups
commit 7226017ad37a888915628e59a84a2d1e57b40707 upstream.
When a new cgroup is created, the effective uclamp value wasn't updated
with a call to cpu_util_update_eff() that looks at the hierarchy and
update to the most restrictive values.
Fix it by ensuring to call cpu_util_update_eff() when a new cgroup
becomes online.
Without this change, the newly created cgroup uses the default
root_task_group uclamp values, which is 1024 for both uclamp_{min, max},
which will cause the rq to to be clamped to max, hence cause the
system to run at max frequency.
The problem was observed on Ubuntu server and was reproduced on Debian
and Buildroot rootfs.
By default, Ubuntu and Debian create a cpu controller cgroup hierarchy
and add all tasks to it - which creates enough noise to keep the rq
uclamp value at max most of the time. Imitating this behavior makes the
problem visible in Buildroot too which otherwise looks fine since it's a
minimal userspace.
Fixes:
|
||
|
Qais Yousef
|
4a192aa559 |
UPSTREAM: sched/rt: Make RT capacity-aware
Capacity Awareness refers to the fact that on heterogeneous systems (like Arm big.LITTLE), the capacity of the CPUs is not uniform, hence when placing tasks we need to be aware of this difference of CPU capacities. In such scenarios we want to ensure that the selected CPU has enough capacity to meet the requirement of the running task. Enough capacity means here that capacity_orig_of(cpu) >= task.requirement. The definition of task.requirement is dependent on the scheduling class. For CFS, utilization is used to select a CPU that has >= capacity value than the cfs_task.util. capacity_orig_of(cpu) >= cfs_task.util DL isn't capacity aware at the moment but can make use of the bandwidth reservation to implement that in a similar manner CFS uses utilization. The following patchset implements that: https://lore.kernel.org/lkml/20190506044836.2914-1-luca.abeni@santannapisa.it/ capacity_orig_of(cpu)/SCHED_CAPACITY >= dl_deadline/dl_runtime For RT we don't have a per task utilization signal and we lack any information in general about what performance requirement the RT task needs. But with the introduction of uclamp, RT tasks can now control that by setting uclamp_min to guarantee a minimum performance point. ATM the uclamp value are only used for frequency selection; but on heterogeneous systems this is not enough and we need to ensure that the capacity of the CPU is >= uclamp_min. Which is what implemented here. capacity_orig_of(cpu) >= rt_task.uclamp_min Note that by default uclamp.min is 1024, which means that RT tasks will always be biased towards the big CPUs, which make for a better more predictable behavior for the default case. Must stress that the bias acts as a hint rather than a definite placement strategy. For example, if all big cores are busy executing other RT tasks we can't guarantee that a new RT task will be placed there. On non-heterogeneous systems the original behavior of RT should be retained. Similarly if uclamp is not selected in the config. [ mingo: Minor edits to comments. ] Bug: 133435829 Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191009104611.15363-1-qais.yousef@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> (cherry picked from commit 804d402fb6f6487b825aae8cf42fda6426c62867) Signed-off-by: Quentin Perret <qperret@google.com> Change-Id: I3f173fd2264510142fbbe3e292caba8771263c92 |
||
|
Valentin Schneider
|
15d93f6707 |
UPSTREAM: sched/fair: Make EAS wakeup placement consider uclamp restrictions
task_fits_capacity() has just been made uclamp-aware, and
find_energy_efficient_cpu() needs to go through the same treatment.
Things are somewhat different here however - using the task max clamp isn't
sufficient. Consider the following setup:
The target runqueue, rq:
rq.cpu_capacity_orig = 512
rq.cfs.avg.util_avg = 200
rq.uclamp.max = 768 // the max p.uclamp.max of all enqueued p's is 768
The waking task, p (not yet enqueued on rq):
p.util_est = 600
p.uclamp.max = 100
Now, consider the following code which doesn't use the rq clamps:
util = uclamp_task_util(p);
// Does the task fit in the spare CPU capacity?
cpu = cpu_of(rq);
fits_capacity(util, cpu_capacity(cpu) - cpu_util(cpu))
This would lead to:
util = 100;
fits_capacity(100, 512 - 200)
fits_capacity() would return true. However, enqueuing p on that CPU *will*
cause it to become overutilized since rq clamp values are max-aggregated,
so we'd remain with
rq.uclamp.max = 768
which comes from the other tasks already enqueued on rq. Thus, we could
select a high enough frequency to reach beyond 0.8 * 512 utilization
(== overutilized) after enqueuing p on rq. What find_energy_efficient_cpu()
needs here is uclamp_rq_util_with() which lets us peek at the future
utilization landscape, including rq-wide uclamp values.
Make find_energy_efficient_cpu() use uclamp_rq_util_with() for its
fits_capacity() check. This is in line with what compute_energy() ends up
using for estimating utilization.
Bug: 120440300
Tested-By: Dietmar Eggemann <dietmar.eggemann@arm.com>
Suggested-by: Quentin Perret <qperret@google.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20191211113851.24241-6-valentin.schneider@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 1d42509e475cdc8542aa5b3e03a7e845244f4f57)
Signed-off-by: Quentin Perret <qperret@google.com>
Change-Id: I0f74ea0b05590b0776e8e2ac568af3162d5ca29a
|
||
|
Valentin Schneider
|
d5c2a096a5 |
UPSTREAM: sched/fair: Make task_fits_capacity() consider uclamp restrictions
task_fits_capacity() drives CPU selection at wakeup time, and is also used to detect misfit tasks. Right now it does so by comparing task_util_est() with a CPU's capacity, but doesn't take into account uclamp restrictions. There's a few interesting uses that can come out of doing this. For instance, a low uclamp.max value could prevent certain tasks from being flagged as misfit tasks, so they could merrily remain on low-capacity CPUs. Similarly, a high uclamp.min value would steer tasks towards high capacity CPUs at wakeup (and, should that fail, later steered via misfit balancing), so such "boosted" tasks would favor CPUs of higher capacity. Introduce uclamp_task_util() and make task_fits_capacity() use it. Bug: 120440300 Tested-By: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Quentin Perret <qperret@google.com> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191211113851.24241-5-valentin.schneider@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> (cherry picked from commit a7008c07a568278ed2763436404752a98004c7ff) Signed-off-by: Quentin Perret <qperret@google.com> Change-Id: Icd08c2d2a415695b980371eff8ab42cd9a83609b |
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Valentin Schneider
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1356a58daa |
UPSTREAM: sched/uclamp: Rename uclamp_util_with() into uclamp_rq_util_with()
The current helper returns (CPU) rq utilization with uclamp restrictions taken into account. A uclamp task utilization helper would be quite helpful, but this requires some renaming. Prepare the code for the introduction of a uclamp_task_util() by renaming the existing uclamp_util_with() to uclamp_rq_util_with(). Bug: 120440300 Tested-By: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Quentin Perret <qperret@google.com> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191211113851.24241-4-valentin.schneider@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> (cherry picked from commit d2b58a286e89824900d501db0be1d4f6aed474fc) Signed-off-by: Quentin Perret <qperret@google.com> Change-Id: I33d3f6ad4faba10da5a0a20a9ecb444cee81d8da |
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Valentin Schneider
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fedb670f02 |
UPSTREAM: sched/uclamp: Make uclamp util helpers use and return UL values
Vincent pointed out recently that the canonical type for utilization values is 'unsigned long'. Internally uclamp uses 'unsigned int' values for cache optimization, but this doesn't have to be exported to its users. Make the uclamp helpers that deal with utilization use and return unsigned long values. Bug: 120440300 Tested-By: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Quentin Perret <qperret@google.com> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191211113851.24241-3-valentin.schneider@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> (cherry picked from commit 686516b55e98edf18c2a02d36aaaa6f4c0f6c39c) Signed-off-by: Quentin Perret <qperret@google.com> Change-Id: I8c3a191ef6ebae6b76521321ee911e9b9e4eda45 |
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Valentin Schneider
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6966eb9ecf |
BACKPORT: sched/uclamp: Remove uclamp_util()
The sole user of uclamp_util(), schedutil_cpu_util(), was made to use
uclamp_util_with() instead in commit:
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Quentin Perret
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1473e2098c |
Revert "ANDROID: sched/fair: EAS: Add uclamp support to find_energy_efficient_cpu()"
This reverts commit
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Greg Kroah-Hartman
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33c8a1b2d0 |
This is the 5.4.15 stable release
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restore CRYPTO_AES dependency crypto: sun4i-ss - fix big endian issues perf map: No need to adjust the long name of modules leds: tlc591xx: update the maximum brightness soc/tegra: pmc: Fix crashes for hierarchical interrupts soc: qcom: llcc: Name regmaps to avoid collisions soc: renesas: Add missing check for non-zero product register address soc: aspeed: Fix snoop_file_poll()'s return type watchdog: sprd: Fix the incorrect pointer getting from driver data ipmi: Fix memory leak in __ipmi_bmc_register sched/core: Further clarify sched_class::set_next_task() gpiolib: No need to call gpiochip_remove_pin_ranges() twice rtw88: fix beaconing mode rsvd_page memory violation issue rtw88: fix error handling when setup efuse info drm/panfrost: Add missing check for pfdev->regulator drm: panel-lvds: Potential Oops in probe error handling drm/amdgpu: remove excess function parameter description hwrng: omap3-rom - Fix missing clock by probing with device tree dpaa2-eth: Fix minor bug in ethtool stats reporting drm/rockchip: Round up _before_ giving to the clock framework software node: Get reference to parent swnode in get_parent op PCI: mobiveil: Fix csr_read()/write() build issue drm: rcar_lvds: Fix color mismatches on R-Car H2 ES2.0 and later net: netsec: Correct dma sync for XDP_TX frames ACPI: platform: Unregister stale platform devices pwm: sun4i: Fix incorrect calculation of duty_cycle/period regulator: bd70528: Add MODULE_ALIAS to allow module auto loading drm/amdgpu/vi: silence an uninitialized variable warning power: supply: bd70528: Add MODULE_ALIAS to allow module auto loading firmware: imx: Remove call to devm_of_platform_populate libbpf: Don't use kernel-side u32 type in xsk.c rcu: Fix uninitialized variable in nocb_gp_wait() dpaa_eth: perform DMA unmapping before read dpaa_eth: avoid timestamp read on error paths scsi: ufs: delete redundant function ufshcd_def_desc_sizes() net: openvswitch: don't unlock mutex when changing the user_features fails hv_netvsc: flag software created hash value rt2800: remove errornous duplicate condition net: neigh: use long type to store jiffies delta net: axienet: Fix error return code in axienet_probe() selftests: gen_kselftest_tar.sh: Do not clobber kselftest/ rtc: bd70528: fix module alias to autoload module packet: fix data-race in fanout_flow_is_huge() i2c: stm32f7: report dma error during probe kselftests: cgroup: Avoid the reuse of fd after it is deallocated firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT mmc: sdio: fix wl1251 vendor id mmc: core: fix wl1251 sdio quirks tee: optee: Fix dynamic shm pool allocations tee: optee: fix device enumeration error handling workqueue: Add RCU annotation for pwq list walk SUNRPC: Fix another issue with MIC buffer space sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util() mt76: mt76u: rely on usb_interface instead of usb_dev dma-direct: don't check swiotlb=force in dma_direct_map_resource afs: Remove set but not used variables 'before', 'after' dmaengine: ti: edma: fix missed failure handling drm/radeon: fix bad DMA from INTERRUPT_CNTL2 xdp: Fix cleanup on map free for devmap_hash map type platform/chrome: wilco_ec: fix use after free issue block: fix memleak of bio integrity data s390/qeth: fix dangling IO buffers after halt/clear net-sysfs: Call dev_hold always in netdev_queue_add_kobject gpio: aspeed: avoid return type warning phy/rockchip: inno-hdmi: round clock rate down to closest 1000 Hz optee: Fix multi page dynamic shm pool alloc Linux 5.4.15 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I28b2a19657d40804406dc0e7c266296ce8768eb7 |
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Vincent Guittot
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0e9619ff10 |
sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util()
[ Upstream commit bef69dd87828ef5d8ecdab8d857cd3a33cf98675 ]
update_cfs_rq_load_avg() calls cfs_rq_util_change() every time PELT decays,
which might be inefficient when the cpufreq driver has rate limitation.
When a task is attached on a CPU, we have this call path:
update_load_avg()
update_cfs_rq_load_avg()
cfs_rq_util_change -- > trig frequency update
attach_entity_load_avg()
cfs_rq_util_change -- > trig frequency update
The 1st frequency update will not take into account the utilization of the
newly attached task and the 2nd one might be discarded because of rate
limitation of the cpufreq driver.
update_cfs_rq_load_avg() is only called by update_blocked_averages()
and update_load_avg() so we can move the call to
cfs_rq_util_change/cpufreq_update_util() into these two functions.
It's also interesting to note that update_load_avg() already calls
cfs_rq_util_change() directly for the !SMP case.
This change will also ensure that cpufreq_update_util() is called even
when there is no more CFS rq in the leaf_cfs_rq_list to update, but only
IRQ, RT or DL PELT signals.
[ mingo: Minor updates. ]
Reported-by: Doug Smythies <dsmythies@telus.net>
Tested-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: juri.lelli@redhat.com
Cc: linux-pm@vger.kernel.org
Cc: mgorman@suse.de
Cc: rostedt@goodmis.org
Cc: sargun@sargun.me
Cc: srinivas.pandruvada@linux.intel.com
Cc: tj@kernel.org
Cc: xiexiuqi@huawei.com
Cc: xiezhipeng1@huawei.com
Fixes:
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Peter Zijlstra
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37bb3c4646 |
sched/core: Further clarify sched_class::set_next_task()
commit a0e813f26ebcb25c0b5e504498fbd796cca1a4ba upstream.
It turns out there really is something special to the first
set_next_task() invocation. In specific the 'change' pattern really
should not cause balance callbacks.
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: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: juri.lelli@redhat.com
Cc: ktkhai@virtuozzo.com
Cc: mgorman@suse.de
Cc: qais.yousef@arm.com
Cc: qperret@google.com
Cc: rostedt@goodmis.org
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Fixes:
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Greg Kroah-Hartman
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fde6e0c654 |
This is the 5.4.11 stable release
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl4bAaMACgkQONu9yGCS aT6WThAApG5Lt+rOIIbb0JsTgiqzRs/5VkxQLDsDkn8QXMDDX44eY+cW3XLA+3nv UAU7wXraFCq7SznsQADHj4edAQN/urNXcIlLCIfoWCuq4Yk6DIgHNDZcC5a1PPiz ri96mrxHq24XDbRcXZFN4usC6Q1Q40W/N2NyZ7gIfCsYOeiaZzNhvw1Sh6Pkajb+ jKe9Yzjolj2XJxrNgJxfsTJLnCEPwoQ/QoBIp1ffHqhhCjR/7tHm611Pj0q260Fj H6OGZaRNMoc4I+2dQXsYUfyPH5aMwx2/Nym4FNHye9LaoQl07m+uR0LqmytPQ0GL j6mQuMv+kdeVOOXO+zRJH8A2yq4mwvr80s15myhG9HvAzmcGAvagsCl19yy9/fJx 6M2Sn8qDwJXRaxTc1e7figXkTZu5+sX7th3sUk0KbCHZ+UkJiCjXpJDgBK/HQkC3 EsVFZGeIBySbWk2yYKzQkb4ZA32qbzUKW88Rjago3BOV96WHfnAhJDQPssDJqlcs cgK+UTQOJb9U1V+Kd4Z8uhlCeboaRj4yOFt2EGxkK2sqJse05eaTN0GPbP/3X6Be TyD17Cnv18Ltk2qf2DXanJSlrCUcHEfEDoQQTqJATxV4NLzTcwmVAscsv1aRmcot ii1ZTwqi04MLgaNla+6tqqZ/VufUtWVIbN73q2UdU8zZh5PHJ18= =cKx6 -----END PGP SIGNATURE----- Merge 5.4.11 into android-5.4 Changes in 5.4.11 USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein bpf: Fix passing modified ctx to ld/abs/ind instruction ASoC: rt5682: fix i2c arbitration lost issue spi: pxa2xx: Add support for Intel Jasper Lake regulator: fix use after free issue ASoC: max98090: fix possible race conditions spi: fsl: Fix GPIO descriptor support gpio: Handle counting of Freescale chipselects spi: fsl: Handle the single hardwired chipselect case locking/spinlock/debug: Fix various data races netfilter: ctnetlink: netns exit must wait for callbacks x86/intel: Disable HPET on Intel Ice Lake platforms netfilter: nf_tables_offload: Check for the NETDEV_UNREGISTER event mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame() libtraceevent: Fix lib installation with O= libtraceevent: Copy pkg-config file to output folder when using O= regulator: core: fix regulator_register() error paths to properly release rdev x86/efi: Update e820 with reserved EFI boot services data to fix kexec breakage ASoC: Intel: bytcr_rt5640: Update quirk for Teclast X89 selftests: netfilter: use randomized netns names efi/gop: Return EFI_NOT_FOUND if there are no usable GOPs efi/gop: Return EFI_SUCCESS if a usable GOP was found efi/gop: Fix memory leak in __gop_query32/64() efi/earlycon: Remap entire framebuffer after page initialization ARM: dts: imx6ul: imx6ul-14x14-evk.dtsi: Fix SPI NOR probing ARM: vexpress: Set-up shared OPP table instead of individual for each CPU netfilter: uapi: Avoid undefined left-shift in xt_sctp.h netfilter: nft_set_rbtree: bogus lookup/get on consecutive elements in named sets netfilter: nf_tables: validate NFT_SET_ELEM_INTERVAL_END netfilter: nf_tables: validate NFT_DATA_VALUE after nft_data_init() netfilter: nf_tables: skip module reference count bump on object updates netfilter: nf_tables_offload: return EOPNOTSUPP if rule specifies no actions ARM: dts: BCM5301X: Fix MDIO node address/size cells selftests/ftrace: Fix to check the existence of set_ftrace_filter selftests/ftrace: Fix ftrace test cases to check unsupported selftests/ftrace: Do not to use absolute debugfs path selftests/ftrace: Fix multiple kprobe testcase selftests: safesetid: Move link library to LDLIBS selftests: safesetid: Check the return value of setuid/setgid selftests: safesetid: Fix Makefile to set correct test program ARM: exynos_defconfig: Restore debugfs support ARM: dts: Cygnus: Fix MDIO node address/size cells spi: spi-cavium-thunderx: Add missing pci_release_regions() reset: Do not register resource data for missing resets ASoC: topology: Check return value for snd_soc_add_dai_link() ASoC: topology: Check return value for soc_tplg_pcm_create() ASoC: SOF: loader: snd_sof_fw_parse_ext_data log warning on unknown header ASoC: SOF: Intel: split cht and byt debug window sizes ARM: dts: am335x-sancloud-bbe: fix phy mode ARM: omap2plus_defconfig: Add back DEBUG_FS ARM: dts: bcm283x: Fix critical trip point arm64: dts: ls1028a: fix typo in TMU calibration data bpf, riscv: Limit to 33 tail calls bpf, mips: Limit to 33 tail calls bpftool: Don't crash on missing jited insns or ksyms perf metricgroup: Fix printing event names of metric group with multiple events perf header: Fix false warning when there are no duplicate cache entries spi: spi-ti-qspi: Fix a bug when accessing non default CS ARM: dts: am437x-gp/epos-evm: fix panel compatible kselftest/runner: Print new line in print of timeout log kselftest: Support old perl versions samples: bpf: Replace symbol compare of trace_event samples: bpf: fix syscall_tp due to unused syscall arm64: dts: ls1028a: fix reboot node ARM: imx_v6_v7_defconfig: Explicitly restore CONFIG_DEBUG_FS pinctrl: aspeed-g6: Fix LPC/eSPI mux configuration bus: ti-sysc: Fix missing reset delay handling clk: walk orphan list on clock provider registration mac80211: fix TID field in monitor mode transmit cfg80211: fix double-free after changing network namespace pinctrl: pinmux: fix a possible null pointer in pinmux_can_be_used_for_gpio powerpc: Ensure that swiotlb buffer is allocated from low memory btrfs: Fix error messages in qgroup_rescan_init Btrfs: fix cloning range with a hole when using the NO_HOLES feature powerpc/vcpu: Assume dedicated processors as non-preempt powerpc/spinlocks: Include correct header for static key btrfs: handle error in btrfs_cache_block_group Btrfs: fix hole extent items with a zero size after range cloning ocxl: Fix potential memory leak on context creation bpf: Clear skb->tstamp in bpf_redirect when necessary habanalabs: rate limit error msg on waiting for CS habanalabs: remove variable 'val' set but not used bnx2x: Do not handle requests from VFs after parity bnx2x: Fix logic to get total no. of PFs per engine cxgb4: Fix kernel panic while accessing sge_info net: usb: lan78xx: Fix error message format specifier parisc: fix compilation when KEXEC=n and KEXEC_FILE=y parisc: add missing __init annotation rfkill: Fix incorrect check to avoid NULL pointer dereference ASoC: wm8962: fix lambda value regulator: rn5t618: fix module aliases spi: nxp-fspi: Ensure width is respected in spi-mem operations clk: at91: fix possible deadlock staging: axis-fifo: add unspecified HAS_IOMEM dependency iommu/iova: Init the struct iova to fix the possible memleak kconfig: don't crash on NULL expressions in expr_eq() scripts: package: mkdebian: add missing rsync dependency perf/x86: Fix potential out-of-bounds access perf/x86/intel: Fix PT PMI handling sched/psi: Fix sampling error and rare div0 crashes with cgroups and high uptime psi: Fix a division error in psi poll() usb: typec: fusb302: Fix an undefined reference to 'extcon_get_state' block: end bio with BLK_STS_AGAIN in case of non-mq devs and REQ_NOWAIT fs: avoid softlockups in s_inodes iterators fs: call fsnotify_sb_delete after evict_inodes perf/smmuv3: Remove the leftover put_cpu() in error path iommu/dma: Relax locking in iommu_dma_prepare_msi() io_uring: don't wait when under-submitting clk: Move clk_core_reparent_orphans() under CONFIG_OF net: stmmac: selftests: Needs to check the number of Multicast regs net: stmmac: Determine earlier the size of RX buffer net: stmmac: Do not accept invalid MTU values net: stmmac: xgmac: Clear previous RX buffer size net: stmmac: RX buffer size must be 16 byte aligned net: stmmac: Always arm TX Timer at end of transmission start s390/purgatory: do not build purgatory with kcov, kasan and friends drm/exynos: gsc: add missed component_del tpm/tpm_ftpm_tee: add shutdown call back xsk: Add rcu_read_lock around the XSK wakeup net/mlx5e: Fix concurrency issues between config flow and XSK net/i40e: Fix concurrency issues between config flow and XSK net/ixgbe: Fix concurrency issues between config flow and XSK platform/x86: pcengines-apuv2: fix simswap GPIO assignment arm64: cpu_errata: Add Hisilicon TSV110 to spectre-v2 safe list block: Fix a lockdep complaint triggered by request queue flushing s390/dasd/cio: Interpret ccw_device_get_mdc return value correctly s390/dasd: fix memleak in path handling error case block: fix memleak when __blk_rq_map_user_iov() is failed parisc: Fix compiler warnings in debug_core.c sbitmap: only queue kyber's wait callback if not already active s390/qeth: handle error due to unsupported transport mode s390/qeth: fix promiscuous mode after reset s390/qeth: don't return -ENOTSUPP to userspace llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c) hv_netvsc: Fix unwanted rx_table reset selftests: pmtu: fix init mtu value in description tracing: Do not create directories if lockdown is in affect gtp: fix bad unlock balance in gtp_encap_enable_socket macvlan: do not assume mac_header is set in macvlan_broadcast() net: dsa: mv88e6xxx: Preserve priority when setting CPU port. net: freescale: fec: Fix ethtool -d runtime PM net: stmmac: dwmac-sun8i: Allow all RGMII modes net: stmmac: dwmac-sunxi: Allow all RGMII modes net: stmmac: Fixed link does not need MDIO Bus net: usb: lan78xx: fix possible skb leak pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM sch_cake: avoid possible divide by zero in cake_enqueue() sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY tcp: fix "old stuff" D-SACK causing SACK to be treated as D-SACK vxlan: fix tos value before xmit mlxsw: spectrum_qdisc: Ignore grafting of invisible FIFO net: sch_prio: When ungrafting, replace with FIFO vlan: fix memory leak in vlan_dev_set_egress_priority vlan: vlan_changelink() should propagate errors macb: Don't unregister clks unconditionally net/mlx5: Move devlink registration before interfaces load net: dsa: mv88e6xxx: force cmode write on 6141/6341 net/mlx5e: Always print health reporter message to dmesg net/mlx5: DR, No need for atomic refcount for internal SW steering resources net/mlx5e: Fix hairpin RSS table size net/mlx5: DR, Init lists that are used in rule's member usb: dwc3: gadget: Fix request complete check USB: core: fix check for duplicate endpoints USB: serial: option: add Telit ME910G1 0x110a composition usb: missing parentheses in USE_NEW_SCHEME Linux 5.4.11 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Idb9985bebc97203fa305f881fd98a62ac08e66d9 |
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Johannes Weiner
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4e38135180 |
psi: Fix a division error in psi poll()
[ Upstream commit c3466952ca1514158d7c16c9cfc48c27d5c5dc0f ] The psi window size is a u64 an can be up to 10 seconds right now, which exceeds the lower 32 bits of the variable. We currently use div_u64 for it, which is meant only for 32-bit divisors. The result is garbage pressure sampling values and even potential div0 crashes. Use div64_u64. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Cc: Jingfeng Xie <xiejingfeng@linux.alibaba.com> Link: https://lkml.kernel.org/r/20191203183524.41378-3-hannes@cmpxchg.org Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Johannes Weiner
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74e2bdcb7d |
sched/psi: Fix sampling error and rare div0 crashes with cgroups and high uptime
[ Upstream commit 3dfbe25c27eab7c90c8a7e97b4c354a9d24dd985 ] Jingfeng reports rare div0 crashes in psi on systems with some uptime: [58914.066423] divide error: 0000 [#1] SMP [58914.070416] Modules linked in: ipmi_poweroff ipmi_watchdog toa overlay fuse tcp_diag inet_diag binfmt_misc aisqos(O) aisqos_hotfixes(O) [58914.083158] CPU: 94 PID: 140364 Comm: kworker/94:2 Tainted: G W OE K 4.9.151-015.ali3000.alios7.x86_64 #1 [58914.093722] Hardware name: Alibaba Alibaba Cloud ECS/Alibaba Cloud ECS, BIOS 3.23.34 02/14/2019 [58914.102728] Workqueue: events psi_update_work [58914.107258] task: ffff8879da83c280 task.stack: ffffc90059dcc000 [58914.113336] RIP: 0010:[] [] psi_update_stats+0x1c1/0x330 [58914.122183] RSP: 0018:ffffc90059dcfd60 EFLAGS: 00010246 [58914.127650] RAX: 0000000000000000 RBX: ffff8858fe98be50 RCX: 000000007744d640 [58914.134947] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00003594f700648e [58914.142243] RBP: ffffc90059dcfdf8 R08: 0000359500000000 R09: 0000000000000000 [58914.149538] R10: 0000000000000000 R11: 0000000000000000 R12: 0000359500000000 [58914.156837] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8858fe98bd78 [58914.164136] FS: 0000000000000000(0000) GS:ffff887f7f380000(0000) knlGS:0000000000000000 [58914.172529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [58914.178467] CR2: 00007f2240452090 CR3: 0000005d5d258000 CR4: 00000000007606f0 [58914.185765] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [58914.193061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [58914.200360] PKRU: 55555554 [58914.203221] Stack: [58914.205383] ffff8858fe98bd48 00000000000002f0 0000002e81036d09 ffffc90059dcfde8 [58914.213168] ffff8858fe98bec8 0000000000000000 0000000000000000 0000000000000000 [58914.220951] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [58914.228734] Call Trace: [58914.231337] [] psi_update_work+0x22/0x60 [58914.237067] [] process_one_work+0x189/0x420 [58914.243063] [] worker_thread+0x4e/0x4b0 [58914.248701] [] ? process_one_work+0x420/0x420 [58914.254869] [] kthread+0xe6/0x100 [58914.259994] [] ? kthread_park+0x60/0x60 [58914.265640] [] ret_from_fork+0x39/0x50 [58914.271193] Code: 41 29 c3 4d 39 dc 4d 0f 42 dc <49> f7 f1 48 8b 13 48 89 c7 48 c1 [58914.279691] RIP [] psi_update_stats+0x1c1/0x330 The crashing instruction is trying to divide the observed stall time by the sampling period. The period, stored in R8, is not 0, but we are dividing by the lower 32 bits only, which are all 0 in this instance. We could switch to a 64-bit division, but the period shouldn't be that big in the first place. It's the time between the last update and the next scheduled one, and so should always be around 2s and comfortably fit into 32 bits. The bug is in the initialization of new cgroups: we schedule the first sampling event in a cgroup as an offset of sched_clock(), but fail to initialize the last_update timestamp, and it defaults to 0. That results in a bogusly large sampling period the first time we run the sampling code, and consequently we underreport pressure for the first 2s of a cgroup's life. But worse, if sched_clock() is sufficiently advanced on the system, and the user gets unlucky, the period's lower 32 bits can all be 0 and the sampling division will crash. Fix this by initializing the last update timestamp to the creation time of the cgroup, thus correctly marking the start of the first pressure sampling period in a new cgroup. Reported-by: Jingfeng Xie <xiejingfeng@linux.alibaba.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Link: https://lkml.kernel.org/r/20191203183524.41378-2-hannes@cmpxchg.org Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Greg Kroah-Hartman
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861433ef01 |
This is the 5.4.7 stable release
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dst: Force 4-byte alignment of dst_metrics net: gemini: Fix memory leak in gmac_setup_txqs net: hisilicon: Fix a BUG trigered by wrong bytes_compl net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() net: phy: ensure that phy IDs are correctly typed net: qlogic: Fix error paths in ql_alloc_large_buffers() net-sysfs: Call dev_hold always in rx_queue_add_kobject net: usb: lan78xx: Fix suspend/resume PHY register access error nfp: flower: fix stats id allocation qede: Disable hardware gro when xdp prog is installed qede: Fix multicast mac configuration sctp: fix memleak on err handling of stream initialization sctp: fully initialize v4 addr in some functions selftests: forwarding: Delete IPv6 address at the end neighbour: remove neigh_cleanup() method bonding: fix bond_neigh_init() net: ena: fix default tx interrupt moderation interval net: ena: fix issues in setting interrupt moderation params in ethtool dpaa2-ptp: fix double free of the ptp_qoriq IRQ mlxsw: spectrum_router: Remove unlikely user-triggerable warning net: ethernet: ti: davinci_cpdma: fix warning "device driver frees DMA memory with different size" net: stmmac: platform: Fix MDIO init for platforms without PHY net: dsa: b53: Fix egress flooding settings NFC: nxp-nci: Fix probing without ACPI btrfs: don't double lock the subvol_sem for rename exchange btrfs: do not call synchronize_srcu() in inode_tree_del Btrfs: make tree checker detect checksum items with overlapping ranges btrfs: return error pointer from alloc_test_extent_buffer Btrfs: fix missing data checksums after replaying a log tree btrfs: send: remove WARN_ON for readonly mount btrfs: abort transaction after failed inode updates in create_subvol btrfs: skip log replay on orphaned roots btrfs: do not leak reloc root if we fail to read the fs root btrfs: handle ENOENT in btrfs_uuid_tree_iterate Btrfs: fix removal logic of the tree mod log that leads to use-after-free issues ALSA: pcm: Avoid possible info leaks from PCM stream buffers ALSA: hda/ca0132 - Keep power on during processing DSP response ALSA: hda/ca0132 - Avoid endless loop ALSA: hda/ca0132 - Fix work handling in delayed HP detection drm/vc4/vc4_hdmi: fill in connector info drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper. drm: mst: Fix query_payload ack reply struct drm/mipi-dbi: fix a loop in debugfs code drm/panel: Add missing drm_panel_init() in panel drivers drm: exynos: exynos_hdmi: use cec_notifier_conn_(un)register drm: Use EOPNOTSUPP, not ENOTSUPP drm/amd/display: verify stream link before link test drm/bridge: analogix-anx78xx: silence -EPROBE_DEFER warnings drm/amd/display: OTC underflow fix iio: max31856: add missing of_node and parent references to iio_dev iio: light: bh1750: Resolve compiler warning and make code more readable drm/amdgpu/sriov: add ring_stop before ring_create in psp v11 code drm/amdgpu: grab the id mgr lock while accessing passid_mapping drm/ttm: return -EBUSY on pipelining with no_gpu_wait (v2) drm/amd/display: Rebuild mapped resources after pipe split ath10k: add cleanup in ath10k_sta_state() drm/amd/display: Handle virtual signal type in disable_link() ath10k: Check if station exists before forwarding tx airtime report spi: Add call to spi_slave_abort() function when spidev driver is released drm/meson: vclk: use the correct G12A frac max value staging: rtl8192u: fix multiple memory leaks on error path staging: rtl8188eu: fix possible null dereference rtlwifi: prevent memory leak in rtl_usb_probe libertas: fix a potential NULL pointer dereference Revert "pinctrl: sh-pfc: r8a77990: Fix MOD_SEL1 bit30 when using SSI_SCK2 and SSI_WS2" Revert "pinctrl: sh-pfc: r8a77990: Fix MOD_SEL1 bit31 when using SIM0_D" ath10k: fix backtrace on coredump IB/iser: bound protection_sg size by data_sg size drm/komeda: Workaround for broken FLIP_COMPLETE timestamps spi: gpio: prevent memory leak in spi_gpio_probe media: am437x-vpfe: Setting STD to current value is not an error media: cedrus: fill in bus_info for media device media: seco-cec: Add a missing 'release_region()' in an error handling path media: vim2m: Fix abort issue media: vim2m: Fix BUG_ON in vim2m_device_release() media: max2175: Fix build error without CONFIG_REGMAP_I2C media: ov6650: Fix control handler not freed on init error media: i2c: ov2659: fix s_stream return value media: ov6650: Fix crop rectangle alignment not passed back media: i2c: ov2659: Fix missing 720p register config media: ov6650: Fix stored frame format not in sync with hardware media: ov6650: Fix stored crop rectangle not in sync with hardware tools/power/cpupower: Fix initializer override in hsw_ext_cstates media: venus: core: Fix msm8996 frequency table ath10k: fix offchannel tx failure when no ath10k_mac_tx_frm_has_freq media: vimc: Fix gpf in rmmod path when stream is active drm/amd/display: Set number of pipes to 1 if the second pipe was disabled pinctrl: devicetree: Avoid taking direct reference to device name string drm/sun4i: dsi: Fix TCON DRQ set bits drm/amdkfd: fix a potential NULL pointer dereference (v2) x86/math-emu: Check __copy_from_user() result drm/amd/powerplay: A workaround to GPU RESET on APU selftests/bpf: Correct path to include msg + path drm/amd/display: set minimum abm backlight level media: venus: Fix occasionally failures to suspend rtw88: fix NSS of hw_cap drm/amd/display: fix struct init in update_bounding_box usb: renesas_usbhs: add suspend event support in gadget mode crypto: aegis128-neon - use Clang compatible cflags for ARM hwrng: omap3-rom - Call clk_disable_unprepare() on exit only if not idled regulator: max8907: Fix the usage of uninitialized variable in max8907_regulator_probe() tools/memory-model: Fix data race detection for unordered store and load media: flexcop-usb: fix NULL-ptr deref in flexcop_usb_transfer_init() media: cec-funcs.h: add status_req checks media: meson/ao-cec: move cec_notifier_cec_adap_register after hw setup drm/bridge: dw-hdmi: Refuse DDC/CI transfers on the internal I2C controller samples: pktgen: fix proc_cmd command result check logic block: Fix writeback throttling W=1 compiler warnings drm/amdkfd: Fix MQD size calculation MIPS: futex: Emit Loongson3 sync workarounds within asm mwifiex: pcie: Fix memory leak in mwifiex_pcie_init_evt_ring drm/drm_vblank: Change EINVAL by the correct errno selftests/bpf: Fix btf_dump padding test case libbpf: Fix struct end padding in btf_dump libbpf: Fix passing uninitialized bytes to setsockopt net/smc: increase device refcount for added link group team: call RCU read lock when walking the port_list media: cx88: Fix some error handling path in 'cx8800_initdev()' crypto: inside-secure - Fix a maybe-uninitialized warning crypto: aegis128/simd - build 32-bit ARM for v8 architecture explicitly misc: fastrpc: fix memory leak from miscdev->name ASoC: SOF: enable sync_write in hdac_bus media: ti-vpe: vpe: Fix Motion Vector vpdma stride media: ti-vpe: vpe: fix a v4l2-compliance warning about invalid pixel format media: ti-vpe: vpe: fix a v4l2-compliance failure about frame sequence number media: ti-vpe: vpe: Make sure YUYV is set as default format media: ti-vpe: vpe: fix a v4l2-compliance failure causing a kernel panic media: ti-vpe: vpe: ensure buffers are cleaned up properly in abort cases drm/amd/display: Properly round nominal frequency for SPD drm/amd/display: wait for set pipe mcp command completion media: ti-vpe: vpe: fix a v4l2-compliance failure about invalid sizeimage drm/amd/display: add new active dongle to existent w/a syscalls/x86: Use the correct function type in SYSCALL_DEFINE0 drm/amd/display: Fix dongle_caps containing stale information. extcon: sm5502: Reset registers during initialization drm/amd/display: Program DWB watermarks from correct state x86/mm: Use the correct function type for native_set_fixmap() ath10k: Correct error handling of dma_map_single() rtw88: coex: Set 4 slot mode for A2DP drm/bridge: dw-hdmi: Restore audio when setting a mode perf test: Report failure for mmap events perf report: Add warning when libunwind not compiled in perf test: Avoid infinite loop for task exit case perf vendor events arm64: Fix Hisi hip08 DDRC PMU eventname usb: usbfs: Suppress problematic bind and unbind uevents. drm/amd/powerplay: avoid disabling ECC if RAS is enabled for VEGA20 iio: adc: max1027: Reset the device at probe time Bluetooth: btusb: avoid unused function warning Bluetooth: missed cpu_to_le16 conversion in hci_init4_req Bluetooth: Workaround directed advertising bug in Broadcom controllers Bluetooth: hci_core: fix init for HCI_USER_CHANNEL bpf/stackmap: Fix deadlock with rq_lock in bpf_get_stack() x86/mce: Lower throttling MCE messages' priority to warning drm/amd/display: enable hostvm based on roimmu active for dcn2.1 drm/amd/display: fix header for RN clk mgr drm/amdgpu: fix amdgpu trace event print string format error staging: iio: ad9834: add a check for devm_clk_get power: supply: cpcap-battery: Check voltage before orderly_poweroff perf tests: Disable bp_signal testing for arm64 selftests/bpf: Make a copy of subtest name net: hns3: log and clear hardware error after reset complete RDMA/hns: Fix wrong parameters when initial mtt of srq->idx_que drm/gma500: fix memory disclosures due to uninitialized bytes ASoC: soc-pcm: fixup dpcm_prune_paths() loop continue rtl8xxxu: fix RTL8723BU connection failure issue after warm reboot RDMA/siw: Fix SQ/RQ drain logic ipmi: Don't allow device module unload when in use x86/ioapic: Prevent inconsistent state when moving an interrupt media: cedrus: Fix undefined shift with a SHIFT_AND_MASK_BITS macro media: aspeed: set hsync and vsync polarities to normal before starting mode detection drm/nouveau: Don't grab runtime PM refs for HPD IRQs media: ov6650: Fix stored frame interval not in sync with hardware media: ad5820: Define entity function media: ov5640: Make 2592x1944 mode only available at 15 fps media: st-mipid02: add a check for devm_gpiod_get_optional media: imx7-mipi-csis: Add a check for devm_regulator_get media: aspeed: clear garbage interrupts media: smiapp: Register sensor after enabling runtime PM on the device md: no longer compare spare disk superblock events in super_load staging: wilc1000: potential corruption in wilc_parse_join_bss_param() md/bitmap: avoid race window between md_bitmap_resize and bitmap_file_clear_bit drm: Don't free jobs in wait_event_interruptible() EDAC/amd64: Set grain per DIMM arm64: psci: Reduce the waiting time for cpu_psci_cpu_kill() drm/amd/display: setting the DIG_MODE to the correct value. i40e: initialize ITRN registers with correct values drm/amd/display: correctly populate dpp refclk in fpga i40e: Wrong 'Advertised FEC modes' after set FEC to AUTO net: phy: dp83867: enable robust auto-mdix drm/tegra: sor: Use correct SOR index on Tegra210 regulator: core: Release coupled_rdevs on regulator_init_coupling() error ubsan, x86: Annotate and allow __ubsan_handle_shift_out_of_bounds() in uaccess regions spi: sprd: adi: Add missing lock protection when rebooting ACPI: button: Add DMI quirk for Medion Akoya E2215T RDMA/qedr: Fix memory leak in user qp and mr RDMA/hns: Fix memory leak on 'context' on error return path RDMA/qedr: Fix srqs xarray initialization RDMA/core: Set DMA parameters correctly staging: wilc1000: check if device is initialzied before changing vif gpu: host1x: Allocate gather copy for host1x net: dsa: LAN9303: select REGMAP when LAN9303 enable phy: renesas: phy-rcar-gen2: Fix the array off by one warning phy: qcom-usb-hs: Fix extcon double register after power cycle s390/time: ensure get_clock_monotonic() returns monotonic values s390: add error handling to perf_callchain_kernel s390/mm: add mm_pxd_folded() checks to pxd_free() net: hns3: add struct netdev_queue debug info for TX timeout libata: Ensure ata_port probe has completed before detach loop: fix no-unmap write-zeroes request behavior net/mlx5e: Verify that rule has at least one fwd/drop action pinctrl: sh-pfc: sh7734: Fix duplicate TCLK1_B ALSA: bebob: expand sleep just after breaking connections for protocol version 1 iio: dln2-adc: fix iio_triggered_buffer_postenable() position libbpf: Fix error handling in bpf_map__reuse_fd() Bluetooth: Fix advertising duplicated flags ALSA: pcm: Fix missing check of the new non-cached buffer type spi: sifive: disable clk when probe fails and remove ASoC: SOF: imx: fix reverse CONFIG_SND_SOC_SOF_OF dependency pinctrl: qcom: sc7180: Add missing tile info in SDC_QDSD_PINGROUP/UFS_RESET pinctrl: amd: fix __iomem annotation in amd_gpio_irq_handler() ixgbe: protect TX timestamping from API misuse cpufreq: sun50i: Fix CPU speed bin detection media: rcar_drif: fix a memory disclosure media: v4l2-core: fix touch support in v4l_g_fmt nvme: introduce "Command Aborted By host" status code media: staging/imx: Use a shorter name for driver nvmem: imx-ocotp: reset error status on probe nvmem: core: fix nvmem_cell_write inline function ASoC: SOF: topology: set trigger order for FE DAI link media: vivid: media_device_cleanup was called too early spi: dw: Fix Designware SPI loopback bnx2x: Fix PF-VF communication over multi-cos queues. spi: img-spfi: fix potential double release ALSA: timer: Limit max amount of slave instances RDMA/core: Fix return code when modify_port isn't supported drm: msm: a6xx: fix debug bus register configuration rtlwifi: fix memory leak in rtl92c_set_fw_rsvdpagepkt() perf probe: Fix to find range-only function instance perf cs-etm: Fix definition of macro TO_CS_QUEUE_NR perf probe: Fix to list probe event with correct line number perf jevents: Fix resource leak in process_mapfile() and main() perf probe: Walk function lines in lexical blocks perf probe: Fix to probe an inline function which has no entry pc perf probe: Fix to show ranges of variables in functions without entry_pc perf probe: Fix to show inlined function callsite without entry_pc libsubcmd: Use -O0 with DEBUG=1 perf probe: Fix to probe a function which has no entry pc perf tools: Fix cross compile for ARM64 perf tools: Splice events onto evlist even on error drm/amdgpu: disallow direct upload save restore list from gfx driver drm/amd/powerplay: fix struct init in renoir_print_clk_levels drm/amdgpu: fix potential double drop fence reference ice: Check for null pointer dereference when setting rings xen/gntdev: Use select for DMA_SHARED_BUFFER perf parse: If pmu configuration fails free terms perf probe: Skip overlapped location on searching variables net: avoid potential false sharing in neighbor related code perf probe: Return a better scope DIE if there is no best scope perf probe: Fix to show calling lines of inlined functions perf probe: Skip end-of-sequence and non statement lines perf probe: Filter out instances except for inlined subroutine and subprogram libbpf: Fix negative FD close() in xsk_setup_xdp_prog() s390/bpf: Use kvcalloc for addrs array cgroup: freezer: don't change task and cgroups status unnecessarily selftests: proc: Make va_max 1MB drm/amdgpu: Avoid accidental thread reactivation. media: exynos4-is: fix wrong mdev and v4l2 dev order in error path ath10k: fix get invalid tx rate for Mesh metric fsi: core: Fix small accesses and unaligned offsets via sysfs selftests: net: Fix printf format warnings on arm media: pvrusb2: Fix oops on tear-down when radio support is not present soundwire: intel: fix PDI/stream mapping for Bulk crypto: atmel - Fix authenc support when it is set to m ice: delay less media: si470x-i2c: add missed operations in remove media: cedrus: Use helpers to access capture queue media: v4l2-ctrl: Lock main_hdl on operations of requests_queued. iio: cros_ec_baro: set info_mask_shared_by_all_available field EDAC/ghes: Fix grain calculation media: vicodec: media_device_cleanup was called too early media: vim2m: media_device_cleanup was called too early spi: pxa2xx: Add missed security checks ASoC: rt5677: Mark reg RT5677_PWR_ANLG2 as volatile iio: dac: ad5446: Add support for new AD5600 DAC bpf, testing: Workaround a verifier failure for test_progs ASoC: Intel: kbl_rt5663_rt5514_max98927: Add dmic format constraint net: dsa: sja1105: Disallow management xmit during switch reset r8169: respect EEE user setting when restarting network s390/disassembler: don't hide instruction addresses net: ethernet: ti: Add dependency for TI_DAVINCI_EMAC nvme: Discard workaround for non-conformant devices parport: load lowlevel driver if ports not found bcache: fix static checker warning in bcache_device_free() cpufreq: Register drivers only after CPU devices have been registered qtnfmac: fix debugfs support for multiple cards qtnfmac: fix invalid channel information output x86/crash: Add a forward declaration of struct kimage qtnfmac: fix using skb after free RDMA/efa: Clear the admin command buffer prior to its submission tracing: use kvcalloc for tgid_map array allocation MIPS: ralink: enable PCI support only if driver for mt7621 SoC is selected tracing/kprobe: Check whether the non-suffixed symbol is notrace bcache: fix deadlock in bcache_allocator iwlwifi: mvm: fix unaligned read of rx_pkt_status ASoC: wm8904: fix regcache handling regulator: core: Let boot-on regulators be powered off spi: tegra20-slink: add missed clk_unprepare tun: fix data-race in gro_normal_list() xhci-pci: Allow host runtime PM as default also for Intel Ice Lake xHCI crypto: virtio - deal with unsupported input sizes mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests btrfs: don't prematurely free work in end_workqueue_fn() btrfs: don't prematurely free work in run_ordered_work() sched/uclamp: Fix overzealous type replacement ASoC: wm2200: add missed operations in remove and probe failure spi: st-ssc4: add missed pm_runtime_disable ASoC: wm5100: add missed pm_runtime_disable perf/core: Fix the mlock accounting, again selftests, bpf: Fix test_tc_tunnel hanging selftests, bpf: Workaround an alu32 sub-register spilling issue bnxt_en: Return proper error code for non-existent NVM variable net: phy: avoid matching all-ones clause 45 PHY IDs firmware_loader: Fix labels with comma for builtin firmware ASoC: Intel: bytcr_rt5640: Update quirk for Acer Switch 10 SW5-012 2-in-1 x86/insn: Add some Intel instructions to the opcode map net-af_xdp: Use correct number of channels from ethtool brcmfmac: remove monitor interface when detaching perf session: Fix decompression of PERF_RECORD_COMPRESSED records perf probe: Fix to show function entry line as probe-able s390/crypto: Fix unsigned variable compared with zero s390/kasan: support memcpy_real with TRACE_IRQFLAGS bnxt_en: Improve RX buffer error handling. iwlwifi: check kasprintf() return value fbtft: Make sure string is NULL terminated ASoC: soc-pcm: check symmetry before hw_params net: ethernet: ti: ale: clean ale tbl on init and intf restart mt76: fix possible out-of-bound access in mt7615_fill_txs/mt7603_fill_txs s390/cpumf: Adjust registration of s390 PMU device drivers crypto: sun4i-ss - Fix 64-bit size_t warnings crypto: sun4i-ss - Fix 64-bit size_t warnings on sun4i-ss-hash.c mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED crypto: vmx - Avoid weird build failures libtraceevent: Fix memory leakage in copy_filter_type mips: fix build when "48 bits virtual memory" is enabled drm/amdgpu: fix bad DMA from INTERRUPT_CNTL2 ice: Only disable VF state when freeing each VF resources ice: Fix setting coalesce to handle DCB configuration net: phy: initialise phydev speed and duplex sanely tools, bpf: Fix build for 'make -s tools/bpf O=<dir>' RDMA/bnxt_re: Fix missing le16_to_cpu RDMA/bnxt_re: Fix stat push into dma buffer on gen p5 devices bpf: Provide better register bounds after jmp32 instructions RDMA/bnxt_re: Fix chip number validation Broadcom's Gen P5 series ibmvnic: Fix completion structure initialization net: wireless: intel: iwlwifi: fix GRO_NORMAL packet stalling MIPS: futex: Restore \n after sync instructions btrfs: don't prematurely free work in reada_start_machine_worker() btrfs: don't prematurely free work in scrub_missing_raid56_worker() Revert "mmc: sdhci: Fix incorrect switch to HS mode" mmc: mediatek: fix CMD_TA to 2 for MT8173 HS200/HS400 mode tpm_tis: reserve chip for duration of tpm_tis_core_init tpm: fix invalid locking in NONBLOCKING mode iommu: fix KASAN use-after-free in iommu_insert_resv_region iommu: set group default domain before creating direct mappings iommu/vt-d: Fix dmar pte read access not set error iommu/vt-d: Set ISA bridge reserved region as relaxable iommu/vt-d: Allocate reserved region for ISA with correct permission can: xilinx_can: Fix missing Rx can packets on CANFD2.0 can: m_can: tcan4x5x: add required delay after reset can: j1939: j1939_sk_bind(): take priv after lock is held can: flexcan: fix possible deadlock and out-of-order reception after wakeup can: flexcan: poll MCR_LPM_ACK instead of GPR ACK for stop mode acknowledgment can: kvaser_usb: kvaser_usb_leaf: Fix some info-leaks to USB devices selftests: net: tls: remove recv_rcvbuf test spi: dw: Correct handling of native chipselect spi: cadence: Correct handling of native chipselect usb: xhci: Fix build warning seen with CONFIG_PM=n drm/amdgpu: fix uninitialized variable pasid_mapping_needed ath10k: Revert "ath10k: add cleanup in ath10k_sta_state()" RDMA/siw: Fix post_recv QP state locking md: avoid invalid memory access for array sb->dev_roles s390/ftrace: fix endless recursion in function_graph tracer ARM: dts: Fix vcsi regulator to be always-on for droid4 to prevent hangs can: flexcan: add low power enter/exit acknowledgment helper usbip: Fix receive error in vhci-hcd when using scatter-gather usbip: Fix error path of vhci_recv_ret_submit() spi: fsl: don't map irq during probe spi: fsl: use platform_get_irq() instead of of_irq_to_resource() efi/memreserve: Register reservations as 'reserved' in /proc/iomem cpufreq: Avoid leaving stale IRQ work items during CPU offline KEYS: asymmetric: return ENOMEM if akcipher_request_alloc() fails mm: vmscan: protect shrinker idr replace with CONFIG_MEMCG USB: EHCI: Do not return -EPIPE when hub is disconnected intel_th: pci: Add Comet Lake PCH-V support intel_th: pci: Add Elkhart Lake SOC support intel_th: Fix freeing IRQs intel_th: msu: Fix window switching without windows platform/x86: hp-wmi: Make buffer for HPWMI_FEATURE2_QUERY 128 bytes staging: comedi: gsc_hpdi: check dma_alloc_coherent() return value tty/serial: atmel: fix out of range clock divider handling serial: sprd: Add clearing break interrupt operation pinctrl: baytrail: Really serialize all register accesses clk: imx: clk-imx7ulp: Add missing sentinel of ulp_div_table clk: imx: clk-composite-8m: add lock to gate/mux clk: imx: pll14xx: fix clk_pll14xx_wait_lock ext4: fix ext4_empty_dir() for directories with holes ext4: check for directory entries too close to block end ext4: unlock on error in ext4_expand_extra_isize() ext4: validate the debug_want_extra_isize mount option at parse time iocost: over-budget forced IOs should schedule async delay KVM: PPC: Book3S HV: Fix regression on big endian hosts kvm: x86: Host feature SSBD doesn't imply guest feature SPEC_CTRL_SSBD kvm: x86: Host feature SSBD doesn't imply guest feature AMD_SSBD KVM: arm/arm64: Properly handle faulting of device mappings KVM: arm64: Ensure 'params' is initialised when looking up sys register x86/intel: Disable HPET on Intel Coffee Lake H platforms x86/MCE/AMD: Do not use rdmsr_safe_on_cpu() in smca_configure() x86/MCE/AMD: Allow Reserved types to be overwritten in smca_banks[] x86/mce: Fix possibly incorrect severity calculation on AMD powerpc/vcpu: Assume dedicated processors as non-preempt powerpc/irq: fix stack overflow verification ocxl: Fix concurrent AFU open and device removal mmc: sdhci-msm: Correct the offset and value for DDR_CONFIG register mmc: sdhci-of-esdhc: Revert "mmc: sdhci-of-esdhc: add erratum A-009204 support" mmc: sdhci: Update the tuning failed messages to pr_debug level mmc: sdhci-of-esdhc: fix P2020 errata handling mmc: sdhci: Workaround broken command queuing on Intel GLK mmc: sdhci: Add a quirk for broken command queuing nbd: fix shutdown and recv work deadlock v2 iwlwifi: pcie: move power gating workaround earlier in the flow Linux 5.4.7 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I3585238149235bf73bb453e25861d9a6b9193dfa |
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Rafael J. Wysocki
|
da06508bcb |
cpufreq: Avoid leaving stale IRQ work items during CPU offline
commit 85572c2c4a45a541e880e087b5b17a48198b2416 upstream.
The scheduler code calling cpufreq_update_util() may run during CPU
offline on the target CPU after the IRQ work lists have been flushed
for it, so the target CPU should be prevented from running code that
may queue up an IRQ work item on it at that point.
Unfortunately, that may not be the case if dvfs_possible_from_any_cpu
is set for at least one cpufreq policy in the system, because that
allows the CPU going offline to run the utilization update callback
of the cpufreq governor on behalf of another (online) CPU in some
cases.
If that happens, the cpufreq governor callback may queue up an IRQ
work on the CPU running it, which is going offline, and the IRQ work
may not be flushed after that point. Moreover, that IRQ work cannot
be flushed until the "offlining" CPU goes back online, so if any
other CPU calls irq_work_sync() to wait for the completion of that
IRQ work, it will have to wait until the "offlining" CPU is back
online and that may not happen forever. In particular, a system-wide
deadlock may occur during CPU online as a result of that.
The failing scenario is as follows. CPU0 is the boot CPU, so it
creates a cpufreq policy and becomes the "leader" of it
(policy->cpu). It cannot go offline, because it is the boot CPU.
Next, other CPUs join the cpufreq policy as they go online and they
leave it when they go offline. The last CPU to go offline, say CPU3,
may queue up an IRQ work while running the governor callback on
behalf of CPU0 after leaving the cpufreq policy because of the
dvfs_possible_from_any_cpu effect described above. Then, CPU0 is
the only online CPU in the system and the stale IRQ work is still
queued on CPU3. When, say, CPU1 goes back online, it will run
irq_work_sync() to wait for that IRQ work to complete and so it
will wait for CPU3 to go back online (which may never happen even
in principle), but (worse yet) CPU0 is waiting for CPU1 at that
point too and a system-wide deadlock occurs.
To address this problem notice that CPUs which cannot run cpufreq
utilization update code for themselves (for example, because they
have left the cpufreq policies that they belonged to), should also
be prevented from running that code on behalf of the other CPUs that
belong to a cpufreq policy with dvfs_possible_from_any_cpu set and so
in that case the cpufreq_update_util_data pointer of the CPU running
the code must not be NULL as well as for the CPU which is the target
of the cpufreq utilization update in progress.
Accordingly, change cpufreq_this_cpu_can_update() into a regular
function in kernel/sched/cpufreq.c (instead of a static inline in a
header file) and make it check the cpufreq_update_util_data pointer
of the local CPU if dvfs_possible_from_any_cpu is set for the target
cpufreq policy.
Also update the schedutil governor to do the
cpufreq_this_cpu_can_update() check in the non-fast-switch
case too to avoid the stale IRQ work issues.
Fixes:
|
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|
Valentin Schneider
|
c598c8a46d |
sched/uclamp: Fix overzealous type replacement
[ Upstream commit 7763baace1b738d65efa46d68326c9406311c6bf ] Some uclamp helpers had their return type changed from 'unsigned int' to 'enum uclamp_id' by commit |
||
Amit Kucheria
|
98117f2abf |
UPSTREAM: cpufreq: Initialize the governors in core_initcall
Initialize the cpufreq governors earlier to allow for earlier performance control during the boot process. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/b98eae9b44eb2f034d7f5d12a161f5f831be1eb7.1571656015.git.amit.kucheria@linaro.org (cherry picked from commit 3f6ec871e1c2b360aaf022e90bb99dcc016b3874) Signed-off-by: John Stultz <john.stultz@linaro.org> Bug: 146449535 Change-Id: Ib5599ade3811fb44a15cda6ee3791d997207cad5 |
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Sami Tolvanen
|
ff9de73a0a |
FROMLIST: add support for Clang's Shadow Call Stack (SCS)
This change adds generic support for Clang's Shadow Call Stack, which uses a shadow stack to protect return addresses from being overwritten by an attacker. Details are available here: https://clang.llvm.org/docs/ShadowCallStack.html Note that security guarantees in the kernel differ from the ones documented for user space. The kernel must store addresses of shadow stacks used by other tasks and interrupt handlers in memory, which means an attacker capable reading and writing arbitrary memory may be able to locate them and hijack control flow by modifying shadow stacks that are not currently in use. Bug: 145210207 Change-Id: I2a8ba6a3decac50c169731c3121c9dcab96621d2 (am from https://lore.kernel.org/patchwork/patch/1149054/) Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> |
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Greg Kroah-Hartman
|
ad5859c6ae |
Linux 5.4-rc8
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