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SubjectRe: [PATCH] fix send_sigqueue() vs thread exit race
Thomas Gleixner wrote:
>
> arm timer
> exit
> timer event

I think there is another bug here.

CPU_0 CPU_1

release_task: posix_timer_fn:
write_lock(tasklist); lock(timer->it_lock);

exit_timers: send_sigxxx();
lock(timer->it_lock) read_lock(tasklist);

Deadlock.

Dear cc-list, what do you think?

Oleg.
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