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SubjectRe: btrfs: kernel BUG at mm/page-writeback.c:2286!
On Tue, 19 May 2015, Josef Bacik wrote:

> On 05/19/2015 03:55 AM, Govindarajulu Varadarajan wrote:
>> Hi all
>>
>> I am seeing the following crash on my btrfs filesystem with nfs export.
>> If I disable the nfs share and reboot, I do not hit the crash. Look like
>> the crash happens on btrfs with nfs export.
>>
>> Is this a known issue? Has anyone else faced this? Let me know if you
>> need more
>> information.
>>
>
> Somebody else is unlocking the page while we have it locked (by somebody else
> I mean somebody other than in this particular code path, so could totally
> still be us, it's just not obvious.) What are your mount options? Are you
> capable of building your own kernel? A git bisect would be good to try and
> find where the problem was introduced, seems like it's easy to reproduce.
> I'll look through our recent commits and see if anything pops out. Thanks,
>

Yes, I can do git bisect. But, now that I have deleted the file with csum error
I do not see the crash any more. Sorry.

Is there any was to introduce
"BTRFS info (device sdf): csum failed ino 1154 extent 4434247680 csum 1388825687 wanted 0 mirror 0"?


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