Public bug reported:
I think that the way apport registers itself as a core dump handler with
the system is badly behaved with respect to other configuration
processes one would expect to follow on a Debian or Ubuntu based system.
It forcibly overrides settings specified by a user in /etc/sysctl.conf,
and does not employ /etc/sysctl.d. Thus it is overriding settings that
have been configured elsewhere upon start and upon shutdown.
I think perhaps it should be checking for non-default values in these
settings and not dynamically playing with them while it starts and
stops.
Thanks,
Matthew.
mhall@mhsm:src$ sudo fgrep kernel.core /etc/sysctl.conf
kernel.core_pattern = /var/crash/core.%e.%u.%t
kernel.core_uses_pid = 1
mhall@mhsm:src$
$ sudo sysctl -a | fgrep -i kernel.core
kernel.core_uses_pid = 1
kernel.core_pattern = |/usr/share/apport/apport %p %s %c
kernel.core_pipe_limit = 0
$ cat /etc/init/apport.conf
... SNIP ...
pre-start script
... SNIP ...
echo "|/usr/share/apport/apport %p %s %c" > /proc/sys/kernel/core_pattern
... SNIP ...
post-stop script
... SNIP ...
if [ "`dd if=/proc/sys/kernel/core_pattern count=1 bs=1 2>/dev/null`" !=
"|" ]
then
exit 1
else
echo "core" > /proc/sys/kernel/core_pattern
fi
end script
** Affects: apport (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1080978
Title:
apport forcefully overrides sysctl kernel.core_pattern from values set
in /etc/sysctl.*
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