Re: btrfs: kernel BUG at mm/page-writeback.c:2286!

[Govindarajulu Varadarajan]

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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