linux-ext4 - [Bug 15231] kernel BUG at fs/ext4/inode.c:1852!

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Date:	Wed, 10 Feb 2010 03:26:36 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 15231] kernel BUG at fs/ext4/inode.c:1852!

http://bugzilla.kernel.org/show_bug.cgi?id=15231





--- Comment #10 from Franco Broi <franco@...ro-fsi.com.au>  2010-02-10 03:26:04 ---

I've applied the patch to 2.6.32.7 - strangely the patch program segfaulted but
applied the patch correctly.

[root@...o2 linux-2.6.32.7]# patch -p1 < patch
patching file fs/ext4/inode.c
Segmentation fault

Feb 10 02:11:57 echo2 kernel: patch[18919]: segfault at 0 ip 0000003a0c07ee70
sp 00007fff85523278 error 4 in libc-2.10.1.so[3a0c000000+164000]

Also, before booting the new kernel I did a df, /data6 had a negative used
block count. I guess this could be related to the current problem if the ref
counting has gone a bit skew-whiff although this is with the system running
2.6.32.2.

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/vgdata--3-data5
                     13458176552   2072548 13456104004   1% /data5
/dev/mapper/vgdata--3-data6
                     13458176552  -3576068 13461752620   0% /data6
/dev/mapper/vgdata--4-data7
                     13458176552  40839788 13417336764   1% /data7
/dev/mapper/vgdata--4-data8
                     13458176552   1933764 13456242788   1% /data8

I unmounted and ran fsck, it said it was clean and when I remounted it appeared
to fix itself.

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/vgdata--3-data5
                     13458176552   2072548 13456104004   1% /data5
/dev/mapper/vgdata--3-data6
                     13458176552   1920236 13456256316   1% /data6
/dev/mapper/vgdata--4-data7
                     13458176552  40974956 13417201596   1% /data7
/dev/mapper/vgdata--4-data8
                     13458176552   1933764 13456242788   1% /data8

The patched kernel is running on 3 servers - watch this space..

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