Topic on Project:Support desk

I just migrated my wiki to a brand new install on ubuntu20 with

MediaWiki1.31.7

PHP7.4.3 (apache2handler)

MariaDB10.3.22-MariaDB-1ubuntu1

Everything seemed to work fine except for one thing:

If I click on a diff-link in the version history of any page, i get a "zero-sized-reply" in the browser and in the apache2 error.log i get a line like this:

[Tue Jul 07 16:48:52.619894 2020] [core:notice] [pid 1345] AH00051: child pid 274938 exit signal Segmentation fault (11), possible coredump in /etc/apache2

(there is no core-dump in /etc/apache2)

Any ideas?

@Zapane Ask in an Apache forum how to get a stacktrace/coredump of the Apache segfault, as this is not a MediaWiki problem.

the segfault will probably be in php not apache.

most likely you have no core dump because apache does not have permission to write to /etc/apache.

There is not much we can do about this. If you could minimize the reproduction case that would be helpful.

We could rectify the problem by installing 1.34.2 from mediawiki/latest/stable.

Seems like the ubuntu/debian package is broken, I don't know why ubuntu has such an old version in their current lts repository.

I think this is related to the 'patrolled' functionality for me.