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Re: 2.6.39-rc4+: oom-killer busy killing tasks

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: 2.6.39-rc4+: oom-killer busy killing tasks
From: Christian Kujau <lists@xxxxxxxxxxxxxxx>
Date: Mon, 25 Apr 2011 01:02:33 -0700 (PDT)
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20110424234655.GC12436@dastard>
References: <alpine.DEB.2.01.1104211841510.18728@xxxxxxxxxxxxxx> <20110424234655.GC12436@dastard>
User-agent: Alpine 2.01 (DEB 1266 2009-07-14)
On Mon, 25 Apr 2011 at 09:46, Dave Chinner wrote:
> BTW, what are your mount options? If it is the problem I suspect it
> is, then using noatime with stop it from occurring....

When mounted with noatime, running du(1) accross the XFS volume still 
triggered the OOM killer, but the backtrace looked somewhat different 
this time:

 date invoked oom-killer: gfp_mask=0x84d0, order=0, oom_adj=0, oom_score_adj=0
 Call Trace:
 [ecda5c70] [c0009ce4] show_stack+0x70/0x1bc (unreliable)
 [ecda5cb0] [c008f508] T.528+0x74/0x1cc
 [ecda5d00] [c008f734] T.526+0xd4/0x2a0
 [ecda5d40] [c008fb7c] out_of_memory+0x27c/0x360
 [ecda5d90] [c0093b3c] __alloc_pages_nodemask+0x6f8/0x708
 [ecda5e30] [c0017e9c] pte_alloc_one+0x30/0x90
 [ecda5e40] [c00a9464] __pte_alloc+0x2c/0x100
 [ecda5e60] [c00a95a8] handle_mm_fault+0x70/0x110
 [ecda5e90] [c0016d78] do_page_fault+0x358/0x504
 [ecda5f40] [c0012938] handle_page_fault+0xc/0x80
 --- Exception: 401 at 0xffdd5e0
     LR = 0xffd8a04

Full dmesg & slabinfo & more on: 

http://nerdbynature.de/bits/2.6.39-rc4/oom/

(slabinfo-5.txt.bz2, messages-5.txt)

Christian.
-- 
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