Re: [Bug #11965] regression introduced by - timers: fixitimer/many thread hang

From: Ingo Molnar
Date: Sun Nov 23 2008 - 02:40:32 EST



* Rafael J. Wysocki <rjw@xxxxxxx> wrote:

> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.27. Please verify if it still should be listed and let me
> know (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11965
> Subject : regression introduced by - timers: fix itimer/many thread hang
> Submitter : Doug Chapman <doug.chapman@xxxxxx>
> Date : 2008-11-06 11:03 (17 days old)
> First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f06febc96ba8e0af80bcc3eaec0a109e88275fac
> References : http://marc.info/?l=linux-kernel&m=122596943416648&w=4
> Handled-By : Frank Mayhar <fmayhar@xxxxxxxxxx>
> Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Ingo Molnar <mingo@xxxxxxx>

the hang is fixed by:

commit ad474caca3e2a0550b7ce0706527ad5ab389a4d4
Author: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Mon Nov 10 15:39:30 2008 +0100

fix for account_group_exec_runtime(), make sure ->signal can't be freed under rq->lock

Ingo
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