linux-kernel - Re: task

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Date:	Sun, 23 Nov 2014 19:26:37 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Rik van Riel <riel@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>, x86-ml <x86@...nel.org>
Subject: Re: task_stat splat

On 11/23, Borislav Petkov wrote:
>
> On Sun, Nov 23, 2014 at 06:22:56PM +0100, Oleg Nesterov wrote:
> > Could you identify somehow the line which matches
> > task_sched_runtime+0x99 ? Probably do_task_delta_exec()...
>
> See http://marc.info/?l=linux-kernel&m=141675498417759&w=2
>
> Chris triggers the same splat and reverting
>
> 6e998916dfe3 ("sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency")
>
> fixes the issue for him. I'm testing that same thing reverted too, first
> resume cycle looks good.

Yes, this probably confirms the theory, stop_class needs update_curr.

Oleg.

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