linux-2.6.36 WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()

linux-2.6.36 WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()

[Jeff Chua]

Git pulled latest linux 2.6.36 (at
35da7a307c535f9c2929cae277f3df425c9f9b1e), and 2nd mount for loop
device resulted in the following error. Has this been reported or
shall I bisect?

# mount -o loop cd.iso /mnt
# umount /mnt

# repeat a second time
# mount -o loop cd.iso /mnt

------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()
Hardware name: 5413FGA
sysfs: cannot create duplicate filename '/devices/virtual/block/loop0/loop'
Modules linked in: [last unloaded: usb_storage]
Pid: 7000, comm: mount Tainted: G        W   2.6.36 #3
Call Trace:
 [<ffffffff81033b2c>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff81033bdf>] ? warn_slowpath_fmt+0x45/0x4a
 [<ffffffff810ecf86>] ? sysfs_add_one+0x82/0x95
 [<ffffffff810ed81a>] ? create_dir+0x67/0xaa
 [<ffffffff810eec10>] ? internal_create_group+0x51/0x16f
 [<ffffffff8129de00>] ? lo_ioctl+0x27d/0x615
 [<ffffffff811bba75>] ? blkdev_ioctl+0x527/0x55a
 [<ffffffff810c93f1>] ? block_ioctl+0x32/0x36
 [<ffffffff810b1ee5>] ? do_vfs_ioctl+0x418/0x465
 [<ffffffff810b469e>] ? dput+0x23/0x156
 [<ffffffff810b1f6e>] ? sys_ioctl+0x3c/0x5c
 [<ffffffff81002082>] ? system_call_fastpath+0x16/0x1b
---[ end trace 8b619bd1dfdf9659 ]---

Thanks,
Jeff

Re: linux-2.6.36 WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()

[Milan Broz]

On 10/24/2010 03:51 PM, Jeff Chua wrote:
> Git pulled latest linux 2.6.36 (at
> 35da7a307c535f9c2929cae277f3df425c9f9b1e), and 2nd mount for loop
> device resulted in the following error. Has this been reported or
> shall I bisect?
> 
> # mount -o loop cd.iso /mnt
> # umount /mnt
> 
> # repeat a second time
> # mount -o loop cd.iso /mnt
> 
> ------------[ cut here ]------------
> WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()

Please can you try patch I posted here 
http://lkml.org/lkml/2010/10/24/30 ?

Thanks,
Milan

Re: linux-2.6.36 WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()

[Jeff Chua]

On Mon, Oct 25, 2010 at 12:09 AM, Milan Broz <mbroz@redhat.com> wrote:
> On 10/24/2010 03:51 PM, Jeff Chua wrote:
>> Git pulled latest linux 2.6.36 (at
>> 35da7a307c535f9c2929cae277f3df425c9f9b1e), and 2nd mount for loop
>> device resulted in the following error. Has this been reported or
>> shall I bisect?
>>
>> # mount -o loop cd.iso /mnt
>> # umount /mnt
>>
>> # repeat a second time
>> # mount -o loop cd.iso /mnt
>>
>> ------------[ cut here ]------------
>> WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()
>
> Please can you try patch I posted here
> http://lkml.org/lkml/2010/10/24/30 ?

Milan,

That worked!

Thanks,
Jeff