Re: [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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Follow-Ups:
- Re: [PATCH] fix send_sigqueue() vs thread exit race
  - From: Thomas Gleixner <[email protected]>

References:
- 2.6.13-rc6-rt9
  - From: Ingo Molnar <[email protected]>
- [PATCH 2.6.13-rc6-rt9] PI aware dynamic priority adjustment
  - From: Thomas Gleixner <[email protected]>
- [PATCH] fix send_sigqueue() vs thread exit race
  - From: Oleg Nesterov <[email protected]>
- Re: [PATCH] fix send_sigqueue() vs thread exit race
  - From: Thomas Gleixner <[email protected]>

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