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Re: 2.6.30-06725: xfs_fsr: Assertion failed: ip->i_delayed_blks == 0, f

To: Alexander Beregalov <a.beregalov@xxxxxxxxx>
Subject: Re: 2.6.30-06725: xfs_fsr: Assertion failed: ip->i_delayed_blks == 0, file: fs/xfs/xfs_bmap.c, line: 5991
From: Lachlan McIlroy <lmcilroy@xxxxxxxxxx>
Date: Sat, 20 Jun 2009 03:04:24 -0400 (EDT)
Cc: xfs@xxxxxxxxxxx
In-reply-to: <941396568.292261245481145500.JavaMail.root@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Reply-to: Lachlan McIlroy <lmcilroy@xxxxxxxxxx>
Hi Alexander,

I've seen this assertion before and if it's the problem I think it
is then it should be fixed with this patch:

http://oss.sgi.com/archives/xfs/2009-02/msg00176.html

It shouldn't be difficult to test this too - If you run about 1024
dd writers to separate 100MB files and then run xfs_bmap on each
file afterwards it should assert.

Lachlan

----- "Alexander Beregalov" <a.beregalov@xxxxxxxxx> wrote:

> Hi
> 
> 
> Assertion failed: ip->i_delayed_blks == 0, file: fs/xfs/xfs_bmap.c,
> line: 5991
> ------------[ cut here ]------------
> kernel BUG at fs/xfs/support/debug.c:109!
> invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
> last sysfs file:
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
> Modules linked in: w83627hf hwmon_vid i2c_nforce2
> 
> Pid: 3164, comm: xfs_fsr Not tainted (2.6.30-06725-g1d89b30 #2)
> EIP: 0060:[<c11a063e>] EFLAGS: 00010292 CPU: 0
> EIP is at assfail+0x1e/0x30
> EAX: 00000061 EBX: 0000007f ECX: c13501b7 EDX: ef693d80
> ESI: 00000000 EDI: f67c3de4 EBP: f67c3d38 ESP: f67c3d28
>  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> Process xfs_fsr (pid: 3164, ti=f67c2000 task=ef693d80
> task.ti=f67c2000)
> Stack:
>  c142ab88 c140c8c5 c140c42d 00001767 f67c3dd0 c114d53f ffffffff
> ffffffff
> <0> 00000000 00000000 00000001 efdb91e4 ef693d80 f67c3d88 00000246
> c109abea
> <0> f6df4768 00000246 00000000 00000000 c1198ca0 f3d732e0 e8ae8000
> 00000002
> Call Trace:
>  [<c114d53f>] ? xfs_getbmap+0x19f/0x7b0
>  [<c109abea>] ? __d_lookup+0xca/0x170
>  [<c1198ca0>] ? xfs_getbmap_format+0x0/0x30
>  [<c1073da6>] ? might_fault+0x46/0xa0
>  [<c11ca7e5>] ? copy_from_user+0x35/0x140
>  [<c1198e48>] ? xfs_ioc_getbmap+0x68/0xf0
>  [<c119a830>] ? xfs_file_ioctl+0x420/0x860
>  [<c104d3dd>] ? print_lock_contention_bug+0x1d/0x110
>  [<c106a3f6>] ? put_page+0x56/0x110
>  [<c1083ffc>] ? slab_pad_check+0x3c/0x120
>  [<c10852fd>] ? check_object+0x13d/0x200
>  [<c119a410>] ? xfs_file_ioctl+0x0/0x860
>  [<c1096950>] ? vfs_ioctl+0x20/0x70
>  [<c1096b4a>] ? do_vfs_ioctl+0x6a/0x5c0
>  [<c104ea5b>] ? trace_hardirqs_on+0xb/0x10
>  [<c1078f96>] ? remove_vma+0x56/0x70
>  [<c1078f96>] ? remove_vma+0x56/0x70
>  [<c1078f96>] ? remove_vma+0x56/0x70
>  [<c1079e4b>] ? do_munmap+0x23b/0x280
>  [<c10970d9>] ? sys_ioctl+0x39/0x70
>  [<c1002d58>] ? sysenter_do_call+0x12/0x36
> 
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