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Re: [Xen-devel] Missed Stable backport? maybe [PATCH v2 0/4] xen-blk: bug fixes

On 6/20/2014 12:34 PM, Jason Andryuk wrote:
> On 6/20/2014 11:12 AM, Roger Pau Monné wrote:
>> On 20/06/14 16:32, Jason Andryuk wrote:
>>> Hi Roger,
>>> I'm seeing a crash on shutdown in xen_blkbk_unmap on 3.12.22.
>>> kdb backtrace below.  Could this be the shutdown race fixed by
>>> "[PATCH v2 3/4] xen-blkback: fix shutdown race"?  That email does
>>> not provide the observed backtrace, so I cannot compare.
>> Could be related, but you didn't provide the reason for the crash,
>> just the backtrace, have you tried applying those patches on top of
>> your kernel?
> The backtrace was seen rebooting my box.  kdb is configured in the
> hardware domain, so it broke into that.  Not all guests were shutdown
> prior to the restart.
> It's intermittent.  I just rebooted ready to capture the serial log,
> but there was no crash.
> I haven't tried the patches yet.  They came up when googling for
> related error messages.  I hope to try them soon.

Friday afternoon, I cherry picked the first three patches.  I've rebooted a 
handful of times without error, but it was not reproducible without the 
patches.  I'll report if I see the error again.



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