Segfault on start

[Manuel Meurer]

I just updated to 5.10 (it's not added as a version here in Bitbucket yet btw.) and I'm seeing segfaults when starting Monit with one or more process checks. The OS is Ubuntu 14.04. Here are my config files: https://gist.github.com/manuelmeurer/35491f9bb5b55c5a6c9e

When I comment out the last line in my monitrc (include /etc/monit.d/mysql) Monit starts up properly. When I leave it in it seems to start and there is no output in the log, but the syslog says:

Nov 12 10:06:25 wp01 kernel: [6489412.175205] monit[11056]: segfault at 20 ip 000000000041e068 sp 00007fffb4c79960 error 4 in monit[400000+81000]

[Tildeslash]

Will try to replicate the issue.

Please can you send the coredump (should be available in /var/crash/core/) and the monit binary?

Regarding the 5.10 on Bitbucket, we use tags for releases, 5.10 can be downloaded from Bitbucket in the "Tags" tab here: https://bitbucket.org/tildeslash/monit/downloads#tag-downloads

[Tildeslash]

Unable to replicate the issue on Ubuntu 14.04 x64, using pre-compiled binary (http://www.mmonit.com/monit/dist/binary/5.10/monit-5.10-linux-x64.tar.gz) and also compiled from source.

Please can you send the mentioned coredump?

[Manuel Meurer]

Unfortunately a core dump is not created. I have enabled core dumps with ulimit -c unlimited and when I test it with

sleep 10 &
killall -SIGSEGV sleep

a core dump is created in /var/crash, but not when I start Monit... :(

[Tildeslash]

If no coredump is available, please can you run Monit this way and provide output?:

monit -vI

[Manuel Meurer]

I removed Monit including all folders (/var/lib/monit, /etc/monit.d etc.) once and reinstalled it, now it works again! No idea if the binary was maybe damaged? Anyways, I think it wasn't actually a bug but some external influence.

[Tildeslash]

ok, closing the issue :)