dovecot[30008]: auth-worker: Fatal: master: service(auth-worker): child 31074 killed with signal 11

[John Fawcett]

On 08/04/2019 16:22, Herbert via dovecot wrote:
> Hi
>
> Since a recent DNF update, I see many log file entries like the following:
>
> Apr 08 16:16:36 udoo.symmetrix.ch audit[31074]: ANOM_ABEND
> auid=4294967295 uid=0 gid=0 ses=4294967295
> subj=system_u:system_r:dovecot_auth_t:s0 pid=31074 comm="auth"
> exe="/usr/libexec/dovecot/auth" sig=11 res=1
> Apr 08 16:16:36 udoo.symmetrix.ch kernel: traps: auth[31074] general
> protection fault ip:7ff45b5f98a7 sp:7fff0df96830 error:0 in
> libmariadb.so.3[7ff45b5d7000+46000]
> Apr 08 16:16:36 udoo.symmetrix.ch dovecot[30008]: auth-worker: Fatal:
> master: service(auth-worker): child 31074 killed with signal 11 (core
> not dumped - https://dovecot.org/bugreport.html#coredumps)
> Apr 08 16:16:38 udoo.symmetrix.ch abrt-dump-journal-oops[1139]:
> abrt-dump-journal-oops: Found oopses: 1
> Apr 08 16:16:38 udoo.symmetrix.ch abrt-dump-journal-oops[1139]:
> abrt-dump-journal-oops: Creating problem directories
> Apr 08 16:16:39 udoo.symmetrix.ch abrt-dump-journal-oops[1139]:
> Reported 1 kernel oopses to Abrt
> Apr 08 16:16:39 udoo.symmetrix.ch abrt-server[31104]: Can't find a
> meaningful backtrace for hashing in '.'
> Apr 08 16:16:39 udoo.symmetrix.ch abrt-server[31104]: Option
> 'DropNotReportableOopses' is not configured
> Apr 08 16:16:39 udoo.symmetrix.ch abrt-server[31104]: Preserving oops
> '.' because DropNotReportableOopses is 'no'
> Apr 08 16:16:39 udoo.symmetrix.ch dbus-daemon[1022]: [system]
> Activating service name='org.freedesktop.problems' requested by
> ':1.779' (uid=0 pid=31122 comm="/usr/bin/python3
> /usr/bin/abrt-action-notify -d /v"
> label="system_u:system_r:abrt_t:s0-s0:c0.c1023") (using servicehelper)
> Apr 08 16:16:40 udoo.symmetrix.ch dbus-daemon[1022]: [system]
> Successfully activated service 'org.freedesktop.problems'
> Apr 08 16:16:40 udoo.symmetrix.ch abrt-notification[31129]: System
> encountered a non-fatal error in ??()
>
>
> # uname -a
> Linux udoo.symmetrix.ch 5.0.5-100.fc28.x86_64 #1 SMP Wed Mar 27
> 22:16:29 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
>
> # dovecot --version
> 2.3.5 (513208660)
>
> # mysql --version
> mysql  Ver 15.1 Distrib 10.2.22-MariaDB, for Linux (x86_64) using
> readline 5.1
>
> Unfortunately I didn't manage to get a core dump, sorry.
>
> Kind regards,
> Herbert
>
>
Herbert

it's just a guess without a backtrace, but it looks similar to an
already known issue of a double mysql_close. The code has not yet in a
release but it's in the master-2.3 branch. If you are building from
source you might be able to patch it yourself while waiting for the next
2.3.x release.

https://github.com/dovecot/core/commit/8d78721bbf86657966750da3bcfc7fe9a92c7417

John

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://dovecot.org/pipermail/dovecot/attachments/20190409/9d4eeff9/attachment.html>