<pre><blockquote type="cite"><pre>On Wed, 30 Mar 2016, Lars Ellenberg wrote:
><i> On Wed, Mar 30, 2016 at 02:19:07AM +0000, Eric Wheeler wrote:
</i>><i> > Hello all,
</i>><i> > We are getting kernel crashes in linux 4.1.20 with the drbd-8.4.git tree
</i>><i> > at commit 3a6a769340ef93b1ba2792c6461250<wbr>790795db49 .
</i>><i> > I don't see anything in the newer commits that addresses this issue so
</i>><i> > I'm posting---but I'll try the latest commit in master, too, just in case.
</i>><i> > Please see the backtrace below. I also included our global_common.conf
</i>><i> > further down. This is protocol A and the link is quite slow. This NULL
</i>><i> > ptr dereference appears to show up when the drbd kernel thread is blocked
</i>><i> > for a long time. It might happen at reconnect time because the BUG didn't
</i>><i> > show up until 13 seconds after the P_BARRIER error.
</i>><i> > The problem is pretty reproducable, so I can probably test patches.
</i>><i> > Please let me know what I can do to help test.
</i>><i> DRBD logs of both peers leading up to the incident may be useful.</i></pre></blockquote><i><i>I have met same issue with 8.4.9, but I cannot reproduce this easily.<br>can you help to share about the reproduce steps? </i>
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