linux-kernel - Re: [warn, 2.6.37-current] loop: sysfs: cannot create duplicate filename

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Message-ID: <4CC7A686.4070407@fusionio.com>
Date:	Tue, 26 Oct 2010 22:11:50 -0600
From:	Jens Axboe <jaxboe@...ionio.com>
To:	Dave Chinner <david@...morbit.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [warn, 2.6.37-current] loop: sysfs: cannot create duplicate filename

On 2010-10-26 18:00, Dave Chinner wrote:
> Folks,
> 
> I'm getting this warning triggering repeatedly when running xfstests
> on a day old 2.6.37-git tree.
> 
>  [ 3393.738568] ------------[ cut here ]------------
>  [ 3393.739389] WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0xc9/0x130()
>  [ 3393.740490] Hardware name: Bochs
>  [ 3393.741041] sysfs: cannot create duplicate filename '/devices/virtual/block/loop0/loop'
>  [ 3393.742439] Modules linked in:
>  [ 3393.742984] Pid: 5360, comm: mount Not tainted 2.6.36-dgc+ #590
>  [ 3393.744125] Call Trace:
>  [ 3393.744555]  [<ffffffff8108492f>] warn_slowpath_common+0x7f/0xc0
>  [ 3393.745545]  [<ffffffff81084a26>] warn_slowpath_fmt+0x46/0x50
>  [ 3393.746493]  [<ffffffff811d1539>] sysfs_add_one+0xc9/0x130
>  [ 3393.747420]  [<ffffffff811d1621>] create_dir+0x81/0xd0
>  [ 3393.748311]  [<ffffffff811d175c>] sysfs_create_subdir+0x1c/0x20
>  [ 3393.749294]  [<ffffffff811d30b8>] internal_create_group+0x58/0x1a0
>  [ 3393.750234]  [<ffffffff811d3233>] sysfs_create_group+0x13/0x20
>  [ 3393.751223]  [<ffffffff81879e66>] lo_ioctl+0x506/0x7b0
>  [ 3393.752111]  [<ffffffff8169b5a8>] __blkdev_driver_ioctl+0x28/0x30
>  [ 3393.753115]  [<ffffffff8169ba8e>] blkdev_ioctl+0x22e/0x6f0
>  [ 3393.754022]  [<ffffffff81190732>] block_ioctl+0x42/0x50
>  [ 3393.754889]  [<ffffffff8116f239>] do_vfs_ioctl+0xa9/0x5a0
>  [ 3393.755803]  [<ffffffff810bdded>] ? trace_hardirqs_on+0xd/0x10
>  [ 3393.756805]  [<ffffffff8116f7b1>] sys_ioctl+0x81/0xa0
>  [ 3393.757647]  [<ffffffff8103a072>] system_call_fastpath+0x16/0x1b
>  [ 3393.758626] ---[ end trace 2a65a71ed74903b0 ]---

Thanks, this is a known bug, I will get the fix expedited.

-- 
Jens Axboe

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