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 /fs/exec.c | |
| parent | 32346491ddf24599decca06190ebca03ff9de7f8 (diff) | |
| download | lwn-d5b36a4dbd06c5e8e36ca8ccc552f679069e2946.tar.gz lwn-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 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c index 0989fb8472a1..778123259e42 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1301,7 +1301,7 @@ int begin_new_exec(struct linux_binprm * bprm) bprm->mm = NULL; #ifdef CONFIG_POSIX_TIMERS - exit_itimers(me->signal); + exit_itimers(me); flush_itimer_signals(); #endif |