linux-kernel - Re: EXT4 regression caused 4eec7

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Message-ID: <20130513135221.GE4845@thunk.org>
Date:	Mon, 13 May 2013 09:52:21 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Dmitry Monakhov <dmonakhov@...nvz.org>
Cc:	Jan Kara <jack@...e.cz>, EUNBONG SONG <eunb.song@...sung.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
	Dave Chinner <david@...morbit.com>
Subject: Re: EXT4 regression caused 4eec7

On Mon, May 13, 2013 at 05:47:05PM +0400, Dmitry Monakhov wrote:
> In fact generic/299 always succeed for me, but it produce warning
> WARNING: at fs/ext4/inode.c:3218 ext4_ext_direct_IO
> and complains from slab debug. But it was missed because i've missed
> this error in the logs and forget to check /proc/sys/kernel/tained.

This is how it's failing for me....

generic/299		[23:06:27][  109.243220] fio (3376) used greatest stack depth: 5240 bytes left
[  109.252757] fio (3380) used greatest stack depth: 5140 bytes left
[  109.307227] fio (3374) used greatest stack depth: 4944 bytes left
 [23:08:10] [failed, exit status 1] - output mismatch (see /root/xfstests/results/generic/299.out.bad)
    --- tests/generic/299.out	2013-04-05 21:41:17.000000000 -0400
    +++ /root/xfstests/results/generic/299.out.bad	2013-05-11 23:08:10.835356876 -0400
    @@ -3,3 +3,6 @@
     Run fio with random aio-dio pattern
     
     Start fallocate/truncate loop
    +./common/rc: line 2055:  3335 Segmentation fault      "$@" >> $seqres.full 2>&1
    +failed: '/root/xfstests/bin/fio /tmp/3135-299.fio'
    +(see /root/xfstests/results/generic/299.full for details)
     ...
     (Run 'diff -u tests/generic/299.out /root/xfstests/results/generic/299.out.bad' to see the entire diff)

I haven't had a chance to investigate the core dump yet....

  	      	       	  	      	  - Ted
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