list_del corruption

list_del corruption

[Geert Jansen]

Hi,

myself, and some other Fedora users, are experiencing a crash in
btrfs. I am using Fedora 20 with its stock kernel (3.12.5 based). The
call trace is here:

  https://retrace.fedoraproject.org/faf/reports/226666/

I have no way to reproduce unfortunately. The crash happens about once a week.

There is also a Red Hat bugzilla here:

  https://bugzilla.redhat.com/show_bug.cgi?id=1028750

The Red Hat bugzilla contains a patch for 3.13 that is claimed to fix
the issue. However the patch does not apply cleanly, and the comment
in the patch indicate that it fixes a different, more recently
introduced bug.

Any help is appreciated.

Thanks,
Geert Jansen

Re: list_del corruption

[Miao Xie]

On 	mon, 23 Dec 2013 09:49:16 +0100, Geert Jansen wrote:
> Hi,
> 
> myself, and some other Fedora users, are experiencing a crash in
> btrfs. I am using Fedora 20 with its stock kernel (3.12.5 based). The
> call trace is here:
> 
>   https://retrace.fedoraproject.org/faf/reports/226666/
> 
> I have no way to reproduce unfortunately. The crash happens about once a week.
> 
> There is also a Red Hat bugzilla here:
> 
>   https://bugzilla.redhat.com/show_bug.cgi?id=1028750
> 
> The Red Hat bugzilla contains a patch for 3.13 that is claimed to fix
> the issue. However the patch does not apply cleanly, and the comment
> in the patch indicate that it fixes a different, more recently
> introduced bug.
> 
> Any help is appreciated.

It should be fixed by:

commit 93858769172c4e3678917810e9d5de360eb991cc
Author: Josef Bacik <jbacik@fusionio.com>
Date:   Mon Oct 28 09:13:25 2013 -0400

    Btrfs: take ordered root lock when removing ordered operations inode
    
    A user reported a list corruption warning from btrfs_remove_ordered_extent, it
    is because we aren't taking the ordered_root_lock when we remove the inode from
    the ordered operations list.  Thanks,
    
    Signed-off-by: Josef Bacik <jbacik@fusionio.com>
    Signed-off-by: Chris Mason <chris.mason@fusionio.com>

Thanks
Miao

> 
> Thanks,
> Geert Jansen
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Re: list_del corruption

[Chris Murphy]

On Dec 23, 2013, at 3:18 AM, Miao Xie <miaox@cn.fujitsu.com> wrote:

> On 	mon, 23 Dec 2013 09:49:16 +0100, Geert Jansen wrote:
>> Hi,
>> 
>> myself, and some other Fedora users, are experiencing a crash in
>> btrfs. I am using Fedora 20 with its stock kernel (3.12.5 based). The
>> call trace is here:
>> 
>>  https://retrace.fedoraproject.org/faf/reports/226666/
>> 
>> I have no way to reproduce unfortunately. The crash happens about once a week.
>> 
>> There is also a Red Hat bugzilla here:
>> 
>>  https://bugzilla.redhat.com/show_bug.cgi?id=1028750
>> 
>> The Red Hat bugzilla contains a patch for 3.13 that is claimed to fix
>> the issue. However the patch does not apply cleanly, and the comment
>> in the patch indicate that it fixes a different, more recently
>> introduced bug.
>> 
>> Any help is appreciated.
> 
> It should be fixed by:
> 
> commit 93858769172c4e3678917810e9d5de360eb991cc
> Author: Josef Bacik <jbacik@fusionio.com>
> Date:   Mon Oct 28 09:13:25 2013 -0400
> 
>    Btrfs: take ordered root lock when removing ordered operations inode

According to changelog this is in kernel 3.12.6. The Fedora 19 and 20 version of this kernel are building in koji today. The F20 one will be found at: http://koji.fedoraproject.org/koji/buildinfo?buildID=486644 And also via the updates-testing repo within a day or two.


Chris Murphy