Re: [resend][PATCH 3/4] move cred_guard_mutex from task_struct tosignal_struct

[Oleg Nesterov]

On 10/25, Roland McGrath wrote:
>
> This has my ACK if Oleg doesn't see any problems.

I believe the patch is fine (it already has my reviewed-by).

Except: I am not sure about -stable. At least, this patch should
not go into the <2.6.35 kernels, it relies on misc changes which
changed the scope of task->signal. Before 2.6.35 almost any user
of ->cred_guard_mutex can race with exit and hit ->signal == NULL.

Oleg.

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