From: Andrew Lutomirski <luto@mit.edu>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Kernel falls apart under light memory pressure (i.e. linking vmlinux)
Date: Sat, 14 May 2011 11:46:00 -0400 [thread overview]
Message-ID: <BANLkTikofp5rHRdW5dXfqJXb8VCAqPQ_7A@mail.gmail.com> (raw)
In-Reply-To: <BANLkTi=fk3DUT9cYd2gAzC98c69F6HXX7g@mail.gmail.com>
[cc linux-mm]
On Thu, May 12, 2011 at 7:54 AM, Andrew Lutomirski <luto@mit.edu> wrote:
> On Thu, May 12, 2011 at 1:46 AM, Andi Kleen <andi@firstfloor.org> wrote:
>>> Here's a nice picture of alt-sysrq-m with lots of memory free but the
>>> system mostly hung. I can still switch VTs.
>>
>> Would rather need backtraces. Try setting up netconsole or crashdump
>> first.
>
> Here are some logs for two different failure mores.
>
> incorrect_oom_kill.txt is an OOM kill when there was lots of available
> swap to use. AFAICT the kernel should not have OOM killed at all.
>
> stuck_xyz is when the system is wedged with plenty (~300MB) free
> memory but no swap. The sysrq files are self-explanatory.
> stuck-sysrq-f.txt is after the others so that it won't have corrupted
> the output. After taking all that data, I waited awhile and started
> getting soft lockup messges.
>
> I'm having trouble reproducing the "stuck" failure mode on my
> lockdep-enabled kernel right now (the OOM kill is easy), so no lock
> state trace. But I got one yesterday and IIRC it showed a few tty
> locks and either kworker or kcryptd holding (kqueue) and
> ((&io->work)).
>
> I compressed the larger files.
>
> --Andy
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next parent reply other threads:[~2011-05-14 15:46 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BANLkTi=XqROAp2MOgwQXEQjdkLMenh_OTQ@mail.gmail.com>
[not found] ` <m2fwokj0oz.fsf@firstfloor.org>
[not found] ` <BANLkTikhj1C7+HXP_4T-VnJzPefU2d7b3A@mail.gmail.com>
[not found] ` <20110512054631.GI6008@one.firstfloor.org>
[not found] ` <BANLkTi=fk3DUT9cYd2gAzC98c69F6HXX7g@mail.gmail.com>
2011-05-14 15:46 ` Andrew Lutomirski [this message]
2011-05-14 16:53 ` Andi Kleen
[not found] ` <BANLkTik6SS9NH7XVSRBoCR16_5veY0MKBw@mail.gmail.com>
2011-05-14 17:43 ` Andi Kleen
2011-05-15 1:37 ` Minchan Kim
2011-05-15 15:27 ` Wu Fengguang
2011-05-15 15:59 ` Andrew Lutomirski
2011-05-15 22:58 ` Minchan Kim
2011-05-16 8:51 ` Mel Gorman
2011-05-15 16:12 ` Andrew Lutomirski
2011-05-17 6:00 ` Wu Fengguang
2011-05-17 6:35 ` Minchan Kim
2011-05-17 19:22 ` Andrew Lutomirski
2011-05-18 5:17 ` Minchan Kim
2011-05-19 2:15 ` Andrew Lutomirski
2011-05-19 2:30 ` KAMEZAWA Hiroyuki
2011-05-19 2:41 ` Andrew Lutomirski
2011-05-19 2:54 ` Minchan Kim
2011-05-19 14:16 ` Andrew Lutomirski
2011-05-20 0:17 ` Minchan Kim
2011-05-20 2:58 ` Andrew Lutomirski
2011-05-20 3:12 ` KOSAKI Motohiro
2011-05-20 3:38 ` Andrew Lutomirski
2011-05-20 4:20 ` Minchan Kim
2011-05-20 5:08 ` KAMEZAWA Hiroyuki
2011-05-20 5:36 ` Minchan Kim
2011-05-20 7:43 ` KAMEZAWA Hiroyuki
2011-05-20 10:11 ` Andrea Arcangeli
2011-05-20 14:11 ` Andrew Lutomirski
2011-05-20 15:33 ` Minchan Kim
2011-05-20 16:01 ` Andrew Lutomirski
2011-05-20 16:19 ` Minchan Kim
2011-05-20 18:09 ` Andrew Lutomirski
2011-05-20 18:40 ` Andrew Lutomirski
2011-05-21 12:04 ` KOSAKI Motohiro
2011-05-21 13:34 ` Andrew Lutomirski
2011-05-21 14:14 ` KOSAKI Motohiro
2011-05-21 14:44 ` Minchan Kim
2011-05-22 12:22 ` Andrew Lutomirski
2011-05-22 23:12 ` Minchan Kim
2011-05-23 16:42 ` Andrea Arcangeli
2011-05-23 17:35 ` Mel Gorman
2011-05-24 1:19 ` Andrew Lutomirski
2011-05-24 1:34 ` Minchan Kim
2011-05-24 11:24 ` Andrew Lutomirski
2011-05-24 11:55 ` Andrew Lutomirski
2011-05-25 0:43 ` KOSAKI Motohiro
2011-05-21 14:31 ` Minchan Kim
2011-05-19 14:51 ` Wu Fengguang
2011-05-19 15:00 ` Andrew Lutomirski
2011-05-20 0:20 ` Minchan Kim
2011-05-15 22:40 ` Minchan Kim
2011-05-17 5:52 ` Wu Fengguang
2011-05-17 6:26 ` Minchan Kim
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