Eric W. Biederman
44b60b7791
UPSTREAM: umd: Track user space drivers with struct pid ...
Use struct pid instead of user space pid values that are prone to wrap
araound.
In addition track the entire thread group instead of just the first
thread that is started by exec. There are no multi-threaded user mode
drivers today but there is nothing preclucing user drivers from being
multi-threaded, so it is just a good idea to track the entire process.
Take a reference count on the tgid's in question to make it possible
to remove exit_umh in a future change.
As a struct pid is available directly use kill_pid_info.
The prior process signalling code was iffy in using a userspace pid
known to be in the initial pid namespace and then looking up it's task
in whatever the current pid namespace is. It worked only because
kernel threads always run in the initial pid namespace.
As the tgid is now refcounted verify the tgid is NULL at the start of
fork_usermode_driver to avoid the possibility of silent pid leaks.
v1: https://lkml.kernel.org/r/87mu4qdlv2.fsf_-_@x220.int.ebiederm.org
v2: https://lkml.kernel.org/r/a70l4oy8.fsf_-_@x220.int.ebiederm.org
Link: https://lkml.kernel.org/r/20200702164140.4468-12-ebiederm@xmission.com
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Change-Id: Ie626e056191a897a5d3a68d9f37245cc5142aa28
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2026-01-14 18:12:15 -08:00
firmware: meson_sm: Rework driver as a proper platform driver
2024-04-13 12:51:26 +02:00
iio: frequency: adf4350: Fix ADF4350_REG3_12BIT_CLKDIV_MODE
2025-10-29 13:59:50 +01:00
Merge android11-5.4.249+ ( d57e792) into msm-5.4
2023-09-28 16:45:28 +05:30
net/mlx4_core: Avoid impossible mlx4_db_alloc() order value
2025-06-04 14:32:33 +02:00
RDMA/mlx5: Enforce same type port association for multiport RoCE
2025-01-09 13:23:34 +01:00
mmc: sdhci-msm: Disable partial_init and clk-scaling to avoid RED error
2024-04-18 10:46:06 +05:30
Merge tag 'ASB-2024-12-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2024-12-17 03:24:53 +02:00
Revert "netfilter: Replace zero-length array with flexible-array member"
2025-01-14 17:17:17 +00:00
Revert "netfilter: Replace zero-length array with flexible-array member"
2025-01-14 17:17:17 +00:00
Revert "netfilter: Replace zero-length array with flexible-array member"
2025-01-14 17:17:17 +00:00
Revert "netfilter: Replace zero-length array with flexible-array member"
2025-01-14 17:17:17 +00:00
Revert "netfilter: Replace zero-length array with flexible-array member"
2025-01-14 17:17:17 +00:00
Merge tag 'ASB-2024-10-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2024-10-09 18:08:17 +00:00
This is the 5.4.244 stable release
2023-06-20 11:07:18 +00:00
qed: Improve the stack space of filter_config()
2024-08-19 05:33:30 +02:00
Merge tag 'ASB-2025-09-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-09-12 18:48:05 +03:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
soc: qcom: mdt_loader: Read hash from firmware blob
2024-08-08 16:32:23 -05:00
Revert "spi: Fix deadlock when adding SPI controllers on SPI buses"
2024-11-21 22:00:36 +00:00
SUNRPC: Replace internal use of SOCKWQ_ASYNC_NOSPACE
2024-12-14 19:44:42 +01:00
Merge tag 'ASB-2025-10-06_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-10-08 15:17:54 +03:00
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
2023-12-13 18:18:10 +01:00
UPSTREAM: fs: add LSM-supporting anon-inode interface
2025-02-20 04:17:45 +02:00
ata: libata-scsi: Fix system suspend for a security locked drive
2025-12-03 12:45:21 +01:00
atm: atmtcp: Prevent arbitrary write in atmtcp_recv_control().
2025-09-04 14:05:54 +02:00
writeback: fix false warning in inode_to_wb()
2025-05-02 07:39:19 +02:00
Revert "coredump: hand a pidfd to the usermode coredump helper"
2025-06-05 07:57:32 +00:00
fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE
2024-09-04 13:14:50 +02:00
ocfs2/dlm: move BITS_TO_BYTES() to bitops.h for wider use
2023-06-09 10:28:54 +02:00
Merge 5.4.287 into android11-5.4-lts
2024-12-16 10:50:16 +00:00
BACKPORT: bpf: Make cgroup storages shared between programs on the same cgroup
2026-01-14 18:12:08 -08:00
UPSTREAM: bpf: Introduce SK_LOOKUP program type with a dedicated attach point
2026-01-14 18:12:05 -08:00
UPSTREAM: bpf: Factor out bpf_link_by_id() helper.
2026-01-14 18:12:13 -08:00
UPSTREAM: bpf: lsm: Implement attach, detach and execution
2025-12-23 13:36:10 -08:00
UPSTREAM: bpf: Introduce SK_LOOKUP program type with a dedicated attach point
2026-01-14 18:12:05 -08:00
UPSTREAM: bpf: Support access to bpf map fields
2026-01-14 17:50:46 -08:00
UPSTREAM: umd: For clarity rename umh_info umd_info
2026-01-14 18:12:15 -08:00
UPSTREAM: bpf: Do not allow btf_ctx_access with __int128 types
2026-01-14 17:53:12 -08:00
BACKPORT: bpf: Make btf_sock_ids global
2026-01-14 18:12:05 -08:00
UPSTREAM: bpf, capability: Introduce CAP_BPF
2026-01-14 17:44:17 -08:00
UPSTREAM: cgroup: use cgrp->kn->id as the cgroup ID
2025-12-23 13:36:09 -08:00
UPSTREAM: cgroup: use cgrp->kn->id as the cgroup ID
2025-12-23 13:36:09 -08:00
Merge android11-5.4.259+ ( 81334f2) into msm-5.4
2023-12-18 15:40:18 +05:30
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
BACKPORT: epoll: wire up syscall epoll_pwait2
2025-12-22 07:42:50 +02:00
Fix gcc 4.9 build issue in 5.4.y
2024-08-19 05:33:53 +02:00
This is the 5.4.302 stable release
2025-12-03 14:36:44 +00:00
Merge android11-5.4.254+ ( 91f7025) into msm-5.4
2023-10-30 22:46:41 -07:00
Revert "hrtimers: Push pending hrtimers away from outgoing CPU earlier"
2023-12-18 18:58:40 +00:00
Merge tag 'ASB-2024-10-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2024-10-09 18:08:17 +00:00
Revert "cred: switch to using atomic_long_t"
2024-01-03 17:00:08 +00:00
BACKPORT: crypto: lib/sha1 - rename "sha" to "sha1"
2025-12-23 13:36:17 -08:00
This is the 5.4.283 stable release
2024-09-06 11:18:13 +00:00
Merge tag 'ASB-2025-12-01_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-12-04 19:21:35 +02:00
linux/dim: Do nothing if no time delta between samples
2023-05-30 12:44:01 +01:00
Merge tag 'ASB-2025-08-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-09-01 13:17:46 +03:00
Merge android11-5.4.242+(e699d54) into msm-5.4
2023-07-26 14:21:25 +05:30
dmaengine: fix is_slave_direction() return false when DMA_DEV_TO_DEV
2024-02-23 08:25:06 +01:00
misc: eeprom: eeprom_93cx6: Add quirk for extra read clock cycle
2024-12-14 19:44:55 +01:00
ethernet: Add helper for assigning packet type when dest address does not match device address
2024-05-02 16:18:36 +02:00
eventfd: Export eventfd_ctx_do_read()
2023-09-23 10:59:40 +02:00
BACKPORT: bpf: Add support for BTF pointers to x86 JIT
2025-12-23 13:35:36 -08:00
UPSTREAM: close_range(): fix the logics in descriptor table trimming
2025-12-22 04:28:18 +02:00
UPSTREAM: bpf: Fail PERF_EVENT_IOC_SET_BPF when bpf_get_[stack|stackid] cannot work
2026-01-14 18:12:08 -08:00
objtool: Add support for intra-function calls
2024-04-13 12:51:29 +02:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
This is the 5.4.280 stable release
2024-07-19 13:19:29 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
Merge android11-5.4.274 ( 564901b) into msm-5.4
2024-07-24 20:38:43 -07:00
This is the 5.4.295 stable release
2025-06-30 08:05:33 +00:00
Merge android11-5.4.233+ ( 4716ccc) into msm-5.4
2023-05-30 11:16:10 +05:30
gpu: host1x: mipi: Update tegra_mipi_request() to be node based
2024-03-26 18:22:18 -04:00
Revert "hrtimers: Handle CPU state correctly on hotplug"
2025-04-26 12:28:45 +02:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
Revert "mm: provide speculative fault infrastructure"
2025-05-24 05:44:05 +00:00
Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet
2025-01-09 13:23:33 +01:00
i2c: Use IS_REACHABLE() for substituting empty ACPI functions
2024-09-12 11:03:50 +02:00
clockevents/drivers/i8253: Fix stop sequence for timer 0
2025-04-10 14:29:34 +02:00
Fix termination state for idr_for_each_entry_ul()
2023-11-20 10:30:15 +01:00
net: handle ARPHRD_PPP in dev_is_mac_header_xmit()
2023-09-23 10:59:55 +02:00
team: fix null-ptr-deref when team device type is changed
2023-10-10 21:46:37 +02:00
net: vlan: Replace BUG() with WARN_ON_ONCE() in vlan_dev_* stubs
2025-08-28 16:21:27 +02:00
Revert "interconnect: Add helpers for enabling/disabling a path"
2023-08-31 13:52:19 +00:00
Merge branch 'android11-5.4-lts' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-10-08 15:23:13 +03:00
Merge android11-5.4.281 ( d62984a) into msm-5.4
2024-10-29 01:43:17 -07:00
Merge 5.4.259 into android11-5.4-lts
2023-10-26 09:18:00 +00:00
msm: ipa: Add support for Private IP Forwarding
2024-01-31 15:08:32 +05:30
ipa_eth: Header change to pass more info from ETH to GSI
2023-06-14 09:27:04 +05:30
msm: ipa3: change variable name for indication of
2024-03-13 08:33:14 -07:00
Revert "genirq: Allow irq_chip registration functions to take a const irq_chip"
2024-08-30 10:05:12 +00:00
UPSTREAM: irq_work: Convert flags to atomic_t
2025-12-23 13:35:39 -08:00
Revert "genirq: Allow the PM device to originate from irq domain"
2024-08-30 10:05:12 +00:00
jbd2: introduce/export functions jbd2_journal_submit|finish_inode_data_buffers()
2024-11-08 16:20:30 +01:00
Merge 5.4.287 into android11-5.4-lts
2024-12-16 10:50:16 +00:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
BACKPORT: kernfs: convert kernfs_node->id from union kernfs_node_id to u64
2025-12-23 13:35:40 -08:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
KVM: Explicitly verify target vCPU is online in kvm_get_vcpu()
2025-03-13 12:43:07 +01:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
leds: class: Protect brightness_show() with led_cdev->led_access mutex
2024-12-14 19:44:53 +01:00
ata: libata-sata: increase PMP SRST timeout to 10s
2023-10-10 21:46:42 +02:00
BACKPORT: bpf: Verifier, do explicit ALU32 bounds tracking
2025-12-23 13:36:11 -08:00
list: add "list_del_init_careful()" to go with "list_empty_careful()"
2023-06-28 10:18:35 +02:00
drm/syncobj: make lockdep complain on WAIT_FOR_SUBMIT v3
2024-03-01 13:13:38 +01:00
BACKPORT: security: Refactor declaration of LSM hooks
2025-12-23 13:36:10 -08:00
BACKPORT: security: Refactor declaration of LSM hooks
2025-12-23 13:36:10 -08:00
mcb: remove is_added flag from mcb_device struct
2023-10-25 11:53:19 +02:00
net: phy: mchp: Add support for LAN8814 QUAD PHY
2024-07-05 09:08:27 +02:00
Revert "mm/migrate: Pass vm_fault pointer to migrate_misplaced_page()"
2025-05-24 05:44:07 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
Revert "mm: make pte_unmap_same compatible with SPF"
2025-05-24 05:44:30 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
module: Restore the moduleparam prefix length check
2025-08-28 16:21:21 +02:00
msm: ep_pcie: Disable hot reset and ignore linkdown
2024-09-13 17:38:37 +05:30
new helper: lookup_positive_unlocked()
2023-09-23 10:59:40 +02:00
UPSTREAM: bpf, xdp: Add bpf_link-based XDP attachment API
2026-01-14 18:12:10 -08:00
Remove DECnet support from kernel
2023-06-21 15:44:10 +02:00
Remove DECnet support from kernel
2023-06-21 15:44:10 +02:00
netpoll: netpoll_send_skb() returns transmit status
2025-04-10 14:29:35 +02:00
nfs: add missing selections of CONFIG_CRC32
2025-05-02 07:39:20 +02:00
nfs: fix UAF in direct writes
2025-08-28 16:21:37 +02:00
Revert "fs/nls: make load_nls() take a const parameter"
2023-09-30 15:41:35 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
nvme: fixup comment for nvme RDMA Provider Type
2024-07-05 09:08:28 +02:00
mlxsw: spectrum_acl_erp: Fix object nesting warning
2024-08-19 05:33:28 +02:00
Merge tag 'ASB-2025-09-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-09-12 18:48:05 +03:00
of/irq: Make of_msi_map_rid() PCI bus agnostic
2023-12-13 18:18:11 +01:00
overflow: Allow mixed type arguments
2025-03-13 12:42:52 +01:00
Revert "mm: provide speculative fault infrastructure"
2025-05-24 05:44:05 +00:00
Revert "PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports"
2025-09-02 14:38:47 +00:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
UPSTREAM: perf: Expose get/put_callchain_entry()
2026-01-14 18:12:01 -08:00
ANDROID: 16K: Don't copy data vma for maps/smaps output
2025-08-22 07:06:50 -07:00
ANDROID: 16K: Introduce pgsize_migration_inline.h
2024-10-10 16:13:30 -07:00
Merge tag 'ASB-2025-08-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-09-01 13:17:46 +03:00
ANDROID: fix up platform_device ABI break
2023-11-28 10:15:58 +00:00
Revert "PM: domains: Fix up terminology with parent/child"
2023-06-16 09:26:26 +00:00
This is the 5.4.269 stable release
2024-02-24 15:47:08 +00:00
PM / wakeirq: support enabling wake-up irq after runtime_suspend called
2023-08-11 11:54:00 +02:00
poll_wait: add mb() to fix theoretical race between waitqueue_active() and .poll()
2025-02-01 18:18:51 +01:00
power: supply: core: Use blocking_notifier_call_chain to avoid RCU complaint
2025-05-25 16:53:58 +00:00
pps: fix poll support
2025-08-28 16:21:18 +02:00
sched/rt: Provide migrate_disable/enable() inlines
2023-11-20 10:30:12 +01:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
UPSTREAM: bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t
2026-01-14 18:12:07 -08:00
UPSTREAM: fs/nsfs.c: Added ns_match
2025-12-23 13:36:04 -08:00
This is the 5.4.262 stable release
2023-11-29 10:18:14 +00:00
firmware: qcom_scm: Add a call for getting dload mode
2024-06-21 10:36:14 +05:30
Merge 5.4.259 into android11-5.4-lts
2023-10-26 09:18:00 +00:00
quota: Fix slow quotaoff
2023-10-25 11:53:18 +02:00
scsi: core: raid_class: Remove raid_component_add()
2023-08-30 16:27:27 +02:00
rcu: add a helper to report consolidated flavor QS
2024-03-26 18:22:25 -04:00
rcu: fix header guard for rcu_all_qs()
2025-06-04 14:32:34 +02:00
Revert "regmap: allow to define reg_update_bits for no bus configuration"
2024-04-16 10:04:00 +00:00
This is the 5.4.284 stable release
2024-09-12 10:37:37 +00:00
Revert "mm: introduce __page_add_new_anon_rmap()"
2025-05-24 05:44:06 +00:00
Merge android11-5.4.259+ ( 81334f2) into msm-5.4
2023-12-18 15:40:18 +05:30
BACKPORT: umh: Separate the user mode driver and the user mode helper support
2026-01-14 18:12:14 -08:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
Revert "Revert "Revert "8250: add support for ASIX devices with a FIFO bug"""
2025-05-18 11:04:18 +03:00
serial: core: fix kernel-doc for uart_port_unlock_irqrestore()
2024-05-02 16:18:37 +02:00
dmaengine: sh: setup_xref error handling
2025-12-03 12:45:11 +01:00
BACKPORT: FROMGIT: userfaultfd/shmem: combine shmem_{mcopy_atomic,mfill_zeropage}_pte
2025-05-18 08:08:42 +00:00
UPSTREAM: bpf: Fix up bpf_skb_adjust_room helper's skb csum setting
2026-01-14 17:48:09 -08:00
BACKPORT: bpf: sockmap: Move generic sockmap hooks from BPF TCP
2025-12-23 13:36:03 -08:00
Merge android11-5.4.233+ ( 4716ccc) into msm-5.4
2023-05-30 11:16:10 +05:30
lib/string_helpers: Introduce string_upper() and string_lower() helpers
2023-05-30 12:44:08 +01:00
Revert "mm: introduce __lru_cache_add_active_or_unevictable"
2025-05-24 05:44:06 +00:00
BACKPORT: epoll: wire up syscall epoll_pwait2
2025-12-22 07:42:50 +02:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
BACKPORT: tcp: Expose tcp_sock_set_keepidle_locked
2026-01-14 17:50:47 -08:00
tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
2023-05-17 11:35:57 +02:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
BACKPORT: bpf: Verifier, do explicit ALU32 bounds tracking
2025-12-23 13:36:11 -08:00
Revert "tracing: Constify string literal data member in struct trace_event_call"
2025-01-13 09:47:29 +00:00
tty: Prevent writing chars during tcsetattr TCSADRAIN/FLUSH
2023-05-17 11:36:04 +02:00
types: Complement the aligned types with signed 64-bit one
2025-06-04 14:32:27 +02:00
u64_stats: fix u64_stats_init() for lockdep when used repeatedly in one file
2024-05-02 16:18:28 +02:00
UPSTREAM: uaccess: Add strict non-pagefault kernel-space read function
2025-12-23 13:35:39 -08:00
UPSTREAM: udp: do not accept non-tunnel GSO skbs landing in a tunnel
2025-03-10 16:19:50 +00:00
BACKPORT: umh: Separate the user mode driver and the user mode helper support
2026-01-14 18:12:14 -08:00
units: add the HZ macros
2024-02-23 08:24:47 +01:00
Merge branch 'android11-5.4-lts' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-12-11 01:41:51 -08:00
BACKPORT: FROMGIT: userfaultfd/shmem: modify shmem_mfill_atomic_pte to use install_pte()
2025-05-18 08:08:42 +00:00
UPSTREAM: umd: Track user space drivers with struct pid
2026-01-14 18:12:15 -08:00
util_macros.h: fix/rework find_closest() macros
2024-12-14 19:44:43 +01:00
vfio: Introduce interface to flush virqfd inject workqueue
2024-04-13 12:51:34 +02:00
net: do not allow gso_size to be set to GSO_BY_FRAGS
2023-08-30 16:27:17 +02:00
Revert "mm: add speculative page fault vmstats"
2025-05-24 05:44:04 +00:00
BACKPORT: mm: remove the pgprot argument to __vmalloc
2026-01-14 17:48:09 -08:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
Merge tag 'ASB-2025-02-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-02-06 22:53:05 +02:00
This is the 5.4.251 stable release
2023-08-03 10:56:28 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
