Oleg Nesterov 8ac5dc6659 get_task_mm: check PF_KTHREAD lockless ...

Nowadays PF_KTHREAD is sticky and it was never protected by ->alloc_lock. 
Move the PF_KTHREAD check outside of task_lock() section to make this code
more understandable.

Link: https://lkml.kernel.org/r/20240626191017.GA20031@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2024-07-04 18:05:58 -07:00

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bpf

Merge tag 'asm-generic-fixes-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2024-06-27 10:53:52 -07:00

cgroup

Merge tag 'sched-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-05-19 11:38:15 -07:00

configs

Merge tag 'hardening-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2024-05-13 14:14:05 -07:00

debug

kdb: Simplify management of tmpbuffer in kdb_read()

2024-04-26 17:13:31 +01:00

dma

dma-mapping: benchmark: handle NUMA_NO_NODE correctly

2024-05-23 15:06:48 +02:00

entry

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events

mm: extend rmap flags arguments for folio_add_new_anon_rmap

2024-07-03 19:30:18 -07:00

futex

printk: Change type of CONFIG_BASE_SMALL to bool

2024-05-06 17:39:09 +02:00

gcov

gcov: add support for GCC 14

2024-06-15 10:43:06 -07:00

irq

genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()

2024-05-24 12:49:35 +02:00

kcsan

kcsan, compiler_types: Introduce __data_racy type qualifier

2024-05-07 11:39:50 -07:00

livepatch

livepatch: Rename KLP_* to KLP_TRANSITION_*

2024-05-09 15:48:01 +02:00

locking

Merge tag 'leds-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

2024-05-22 10:49:54 -07:00

module

kallsyms: rework symbol lookup return codes

2024-06-27 17:43:40 +02:00

power

mm: remove the implementation of swap_free() and always use swap_free_nr()

2024-07-03 19:30:01 -07:00

printk

Revert "printk: Save console options for add_preferred_console_match()"

2024-06-25 07:58:10 +02:00

rcu

Merge branches 'fixes.2024.04.15a', 'misc.2024.04.12a', 'rcu-sync-normal-improve.2024.04.15a', 'rcu-tasks.2024.04.15a' and 'rcutorture.2024.04.15a' into rcu-merge.2024.04.15a

2024-05-01 13:04:02 +02:00

sched

Merge tag 'bitmap-for-6.10v2' of https://github.com/norov/linux

2024-05-21 15:29:01 -07:00

time

hrtimer: Prevent queuing of hrtimer without a function callback

2024-06-25 16:54:27 +02:00

trace

ftrace: unpoison ftrace_regs in ftrace_ops_list_func()

2024-07-03 19:30:21 -07:00

.gitignore

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acct.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

async.c

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audit_fsnotify.c

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audit_tree.c

fsnotify: create a wrapper fsnotify_find_inode_mark()

2024-04-04 16:24:16 +02:00

audit_watch.c

fsnotify: create a wrapper fsnotify_find_inode_mark()

2024-04-04 16:24:16 +02:00

audit.c

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audit.h

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auditfilter.c

ima: Avoid blocking in RCU read-side critical section

2024-06-13 14:26:50 -04:00

auditsc.c

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backtracetest.c

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bounds.c

bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS

2024-04-29 08:29:29 -07:00

capability.c

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cfi.c

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compat.c

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configs.c

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context_tracking.c

context_tracking: Make context_tracking_key __ro_after_init

2024-03-22 11:18:18 +01:00

cpu_pm.c

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cpu.c

cpu: Fix broken cmdline "nosmp" and "maxcpus=0"

2024-06-23 20:04:14 +02:00

crash_core.c

Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-05-19 14:02:03 -07:00

crash_reserve.c

crash: add prefix for crash dumping messages

2024-05-08 08:41:26 -07:00

cred.c

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delayacct.c

delayacct: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:54 +02:00

dma.c

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elfcorehdr.c

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exec_domain.c

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exit.c

memcg: mm_update_next_owner: move for_each_thread() into try_to_set_owner()

2024-07-04 18:05:58 -07:00

exit.h

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extable.c

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fail_function.c

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fork.c

get_task_mm: check PF_KTHREAD lockless

2024-07-04 18:05:58 -07:00

freezer.c

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gen_kheaders.sh

kheaders: use command -v to test for existence of cpio

2024-05-30 01:13:20 +09:00

groups.c

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hung_task.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

iomem.c

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irq_work.c

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jump_label.c

jump_label,module: Don't alloc static_key_mod for __ro_after_init keys

2024-03-22 11:18:16 +01:00

kallsyms_internal.h

kallsyms: Avoid weak references for kallsyms symbols

2024-05-02 19:48:26 +09:00

kallsyms_selftest.c

mm: vmalloc: enable memory allocation profiling

2024-04-25 20:55:57 -07:00

kallsyms_selftest.h

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kallsyms.c

kallsyms: rework symbol lookup return codes

2024-06-27 17:43:40 +02:00

kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.kexec

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Kconfig.locks

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Kconfig.preempt

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kcov.c

kcov: don't lose track of remote references during softirqs

2024-06-15 10:43:08 -07:00

kexec_core.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

kexec_elf.c

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kexec_file.c

crash: add a new kexec flag for hotplug support

2024-04-23 14:59:01 +10:00

kexec_internal.h

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kexec.c

crash: add a new kexec flag for hotplug support

2024-04-23 14:59:01 +10:00

kheaders.c

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kprobes.c

kprobe/ftrace: fix build error due to bad function definition

2024-05-17 19:17:55 -07:00

ksyms_common.c

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ksysfs.c

vmlinux: Avoid weak reference to notes section

2024-05-02 19:48:26 +09:00

kthread.c

kunit: Handle test faults

2024-05-06 14:22:02 -06:00

latencytop.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

Makefile

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module_signature.c

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notifier.c

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nsproxy.c

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numa.c

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padata.c

padata: Disable BH when taking works lock on MT path

2024-04-12 15:07:51 +08:00

panic.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

params.c

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pid_namespace.c

zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING

2024-06-15 10:43:06 -07:00

pid_sysctl.h

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

pid.c

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profile.c

profiling: Remove create_prof_cpu_mask().

2024-04-27 11:17:48 -07:00

ptrace.c

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range.c

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reboot.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

regset.c

regset: use kvzalloc() for regset_get_alloc()

2024-04-25 21:07:03 -07:00

relay.c

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resource_kunit.c

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resource.c

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rseq.c

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scftorture.c

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scs.c

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seccomp.c

Merge tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2024-05-17 17:31:24 -07:00

signal.c

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2024-05-23 12:04:36 -07:00

smp.c

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smpboot.c

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smpboot.h

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softirq.c

softirq: Fix suspicious RCU usage in __do_softirq()

2024-04-29 05:03:51 +02:00

stackleak.c

Merge tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2024-05-17 17:31:24 -07:00

stacktrace.c

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static_call_inline.c

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static_call.c

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stop_machine.c

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sys_ni.c

syscalls: fix compat_sys_io_pgetevents_time64 usage

2024-06-25 15:57:20 +02:00

sys.c

Merge tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-05-22 09:56:00 -07:00

sysctl-test.c

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sysctl.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

task_work.c

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taskstats.c

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torture.c

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tracepoint.c

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tsacct.c

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ucount.c

Merge tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2024-05-17 17:31:24 -07:00

uid16.c

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uid16.h

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umh.c

umh: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

up.c

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user_namespace.c

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user-return-notifier.c

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user.c

printk: Change type of CONFIG_BASE_SMALL to bool

2024-05-06 17:39:09 +02:00

usermode_driver.c

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utsname_sysctl.c

kernel misc: Remove the now superfluous sentinel elements from ctl_table array

2024-04-24 09:43:53 +02:00

utsname.c

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vhost_task.c

vhost_task: Handle SIGKILL by flushing work and exiting

2024-05-22 08:31:15 -04:00

vmcore_info.c

mm: free up PG_slab

2024-04-25 20:56:00 -07:00

watch_queue.c

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watchdog_buddy.c

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watchdog_perf.c

kernel/watchdog_perf.c: tidy up kerneldoc

2024-05-08 08:41:29 -07:00

watchdog.c

Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-05-19 14:02:03 -07:00

workqueue_internal.h

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workqueue.c

workqueue: Refactor worker ID formatting and make wq_worker_comm() use full ID string

2024-05-20 13:28:40 -10:00