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<p style="line-height: 100%; margin-bottom: 0cm"> Dear list,</p>
<br>
since Friday we're experiencing random and unexplainable
Segmentation Faults on kea6-server. We're running a 2-node
hot-standby HA setup with kea 3.0.3 since a few weeks and without
any issues. Both the kea4 and kea6 server are running on the same
machine, stork-agent running in parallel. kea6 is serving IA_NA and
PD to about 15k clients.<br>
<br>
It first happened on the current primary node:<br>
<br>
2026-07-24T16:50:46.930672+02:00 kea-dhcp-01 kernel:
kea-dhcp6[3923430]: segfault at 7f3993e79ba1 ip 00007f3edee784cc sp
00007f3ec7023870 error 4 in
libkea-dhcp.so.109.0.0[e44cc,7f3edee02000+fc000] likely on CPU 1
(core 0, socket 0)<br>
2026-07-24T16:50:46.930681+02:00 kea-dhcp-01 kernel: Code: 48 89 ac
14 90 00 00 00 48 8b 68 e8 48 01 dd 80 bd e1 00 00 00 00 0f 84 f2 01
00 00 49 8b 04 24 c6 85 e0 00 00 00 30 4c 89 e7 <ff> 50 38 0f
b7 f0 49 8b 04 24 48 8d 15 b3 c1 ff ff 48 8b 40 40 48<br>
2026-07-24T16:50:46.934788+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Main process exited, code=killed,
status=11/SEGV<br>
2026-07-24T16:50:46.934891+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Failed with result 'signal'.<br>
2026-07-24T16:50:46.935103+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Consumed 44min 56.757s CPU time, 2.7G
memory peak.<br>
<br>
2026-07-24T18:00:46.279228+02:00 kea-dhcp-01 kernel:
kea-dhcp6[4121537]: segfault at 7face69e9991 ip 00007fabb69594cc sp
00007fab9bac7870 error 4 in
libkea-dhcp.so.109.0.0[e44cc,7fabb68e3000+fc000] likely on CPU 0
(core 0, socket 0)<br>
2026-07-24T18:00:46.279236+02:00 kea-dhcp-01 kernel: Code: 48 89 ac
14 90 00 00 00 48 8b 68 e8 48 01 dd 80 bd e1 00 00 00 00 0f 84 f2 01
00 00 49 8b 04 24 c6 85 e0 00 00 00 30 4c 89 e7 <ff> 50 38 0f
b7 f0 49 8b 04 24 48 8d 15 b3 c1 ff ff 48 8b 40 40 48<br>
2026-07-24T18:00:46.284805+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Main process exited, code=killed,
status=11/SEGV<br>
2026-07-24T18:00:46.284892+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Failed with result 'signal'.<br>
2026-07-24T18:00:46.284933+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Consumed 2min 13.601s CPU time, 895.2M
memory peak.<br>
<br>
2026-07-24T18:30:46.911312+02:00 kea-dhcp-01 kernel:
kea-dhcp6[4130306]: segfault at 7f94e43ff ip 00007f955e0a44cc sp
00007f9543251870 error 4 in
libkea-dhcp.so.109.0.0[e44cc,7f955e02e000+fc000] likely on CPU 2
(core 1, socket 0)<br>
2026-07-24T18:30:46.911326+02:00 kea-dhcp-01 kernel: Code: 48 89 ac
14 90 00 00 00 48 8b 68 e8 48 01 dd 80 bd e1 00 00 00 00 0f 84 f2 01
00 00 49 8b 04 24 c6 85 e0 00 00 00 30 4c 89 e7 <ff> 50 38 0f
b7 f0 49 8b 04 24 48 8d 15 b3 c1 ff ff 48 8b 40 40 48<br>
2026-07-24T18:30:46.917777+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Main process exited, code=killed,
status=11/SEGV<br>
2026-07-24T18:30:46.917892+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Failed with result 'signal'.<br>
2026-07-24T18:30:46.917940+02:00 kea-dhcp-01 systemd[1]:
isc-kea-dhcp6-server.service: Consumed 39.436s CPU time, 889.6M
memory peak.<br>
<br>
We restarted it several times, removed the syslogging, stopped
stork-agent to make sure it is not affected by any external source.
But as nothing helped we decided to leave it as is, stop the kea6
daemon and run the other node as primary.<br>
<br>
This also worked fine till Sunday where we hit this:<br>
2026-07-26T12:19:21.136022+02:00 kea-dhcp-02 kernel: traps:
kea-dhcp6[1460682] general protection fault ip:7f3636047af5
sp:7f36221deaa0 error:0 in
libkea-dhcp.so.109.0.0[e4af5,7f3635fd1000+fc000]<br>
2026-07-26T12:19:21.139318+02:00 kea-dhcp-02 systemd[1]:
isc-kea-dhcp6-server.service: Main process exited, code=killed,
status=11/SEGV<br>
2026-07-26T12:19:21.139488+02:00 kea-dhcp-02 systemd[1]:
isc-kea-dhcp6-server.service: Failed with result 'signal'.<br>
2026-07-26T12:19:21.139621+02:00 kea-dhcp-02 systemd[1]:
isc-kea-dhcp6-server.service: Consumed 1h 30min 159ms CPU time, 2.1G
memory peak.<br>
<br>
Are there any known issues in version 3.0.3 that could explain this?
<p style="line-height: 100%; margin-bottom: 0cm">Thanks in advance!</p>
<p style="line-height: 100%; margin-bottom: 0cm"><br>
</p>
<p style="line-height: 100%; margin-bottom: 0cm">BR</p>
<p style="line-height: 100%; margin-bottom: 0cm">Andreas</p>
<p style="line-height: 100%; margin-bottom: 0cm"><br>
</p>
<p style="line-height: 100%; margin-bottom: 0cm"><br>
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