Paul E. McKenney wrote:
>
> --- linux-2.6.13-rc4-realtime-preempt-V0.7.53-01/fs/exec.c 2005-08-11 11:44:55.000000000 -0700
> +++ linux-2.6.13-rc4-realtime-preempt-V0.7.53-01-tasklistRCU/fs/exec.c 2005-08-11 12:26:45.000000000 -0700
> [ ... snip ... ]
> @@ -785,11 +787,13 @@ no_thread_group:
> recalc_sigpending();
>
> + oldsighand->deleted = 1;
> + oldsighand->successor = newsighand;
I don't think this is correct.
This ->oldsighand can be shared with another CLONE_SIGHAND
process and will not be deleted, just unshared.
When the signal is sent to that process we must use ->oldsighand
for locking, not the oldsighand->successor == newsighand.
Oleg.
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