Re: crash in __jbd2_journal_file_buffer

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On Fri 23-08-13 08:02:45, Sage Weil wrote:
> On Fri, 23 Aug 2013, Jan Kara wrote:
> > On Thu 22-08-13 16:35:15, Sage Weil wrote:
> > > On Tue, 13 Aug 2013, Jan Kara wrote:
> > > > On Mon 12-08-13 11:13:06, Sage Weil wrote:
> > > > > Full dmesg is attached.
> > > >   Hum, nothing interesting in there...
> > > > 
> > > > > Our QA seems to hit this with some regularity.  Let me know if there's 
> > > > > some combination of patches that would help shed more light!
> > > >   If they can run with attached debug patch it could maybe sched some more
> > > > light. Please send also your System.map file together with the dmesg of the
> > > > kernel when the crash happens so that I can map addresses to function
> > > > names... Thanks!
> > > 
> > > Okay, finally hit it again:
> > > 
> > > <6>[75193.192249] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,user_xattr,user_xattr
> > > <3>[77877.426658] Dirtying buffer without jh at 4302720297: state 218c029,jh added from 0xffffffff8127ab1d at 4302720297, removed from 0xffffffff8127b5b0 at 4302720296
> >   Great! Can you please send me /proc/kallsyms from the machine?
> 
> Attached!
  Sadly not. I think your MUA got confused by the fact that files in /proc
have 0 length and attached empty file.

								Honza
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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