diff options
| author |   Oleg Nesterov <oleg@redhat.com> | 2022-07-11 18:16:25 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-07-11 09:52:59 -0700 |
| commit | d5b36a4dbd06c5e8e36ca8ccc552f679069e2946 (patch) | |
| tree | 9c6f81aabf791e0e6bccf60d3882257374cd75f2 /include/linux/sched/task.h | |
| parent | Linux 5.19-rc6 (diff) | |
| download | linux-dev-d5b36a4dbd06c5e8e36ca8ccc552f679069e2946.tar.xz linux-dev-d5b36a4dbd06c5e8e36ca8ccc552f679069e2946.zip | |
fix race between exit_itimers() and /proc/pid/timers
As Chris explains, the comment above exit_itimers() is not correct,
we can race with proc_timers_seq_ops. Change exit_itimers() to clear
signal->posix_timers with ->siglock held.
Cc: <stable@vger.kernel.org>
Reported-by: chris@accessvector.net
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/sched/task.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 505aaf9fe477..81cab4b01edc 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -85,7 +85,7 @@ static inline void exit_thread(struct task_struct *tsk) extern __noreturn void do_group_exit(int); extern void exit_files(struct task_struct *); -extern void exit_itimers(struct signal_struct *); +extern void exit_itimers(struct task_struct *); extern pid_t kernel_clone(struct kernel_clone_args *kargs); struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node); |