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<base href="https://bugzilla.netfilter.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Conntrackd segfaults when committing external caches"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1381">1381</a>
</td>
</tr>
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<th>Summary</th>
<td>Conntrackd segfaults when committing external caches
</td>
</tr>
<tr>
<th>Product</th>
<td>conntrack-tools
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86_64
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P5
</td>
</tr>
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<th>Component</th>
<td>conntrack-daemon
</td>
</tr>
<tr>
<th>Assignee</th>
<td>netfilter-buglog@lists.netfilter.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ralf@os-s.de
</td>
</tr></table>
<p>
<div>
<pre>Hi,
I have a setup based on Ubuntu 18.10 using conntrackd and keepalived for a
ha-firewall. When stress-testing the system by stopping and starting keepalived
eventually the conntrackd segfaults.
Nov 4 15:29:46 host conntrackd[1122]: [Mon Nov 4 15:29:46 2019] (pid=1122)
[notice] committing all external caches
Nov 4 15:29:46 host Keepalived_logscript: user.info GROUP VG11 MASTER 0
Nov 4 15:29:46 host kernel: [20484.383544] show_signal_msg: 7 callbacks
suppressed
Nov 4 15:29:46 host kernel: [20484.383546] conntrackd[1122]: segfault at 10 ip
00005649a5693ab4 sp 00007ffeb5aafec0 error 4 in conntrackd[5649a5688000+34000]
It does not segfault every time. Sometimes it takes 5-10 iterations starting
and stopping the keepalived daemon which will invoke conntrackd to flush the
caches and subsequently segfault.
Kernel: 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux
Conntrackd: 1.4.4+snapshot20161117</pre>
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