jperkin: With the latest php 8.2 update in trunk we get "Memory fault(coredump)" crashes when running php on the commandline. Nextcloud for sample has a cron script, which now fails sometimes but not every time. Strange is, that there is no coredump. Any idea what changed in the latest php 8.2 update?

no, can you get a reproducer for me? core dumps will be wherever coreadm has them configured

jperkin: Sorry, what do you meen be reproducer? For Nextcloud the cron script is like: /opt/local/bin/php /var/www/htdocs/nextcloud/current/cron.php

a way to reproduce the crash

We are using the regular coreadm config, no changes.

I don't have any php cores on my build hosts, so it's not something that is triggered by any of the php package builds at least

so it says coredump but there's no core in the coreadm directory?

jperkin: reproducing will be difficult, cause it not always crashes only sometimes. I will first create a new image with php 8.3 and will see if the issue goes away. Yes it says coredump, but no core file in /var/cores

/var/cores isn't the default?

Ah I see there are core files in /zones/<uuid>/cores. OK, will investigate and come back :-)

ah, good, so pstack on one of them will at least give some basic clues as to what to look for

jperkin: Crashes in fffffc7feefe895d iconv (1889b50, fffffc7fffdfda78, fffffc7fffdfda80, fffffc7fffdfda90, fffffc7fffdfda88) + 2d

So it might be more an issue of iconv?

can you gist the full stack somewhere? as a workaround you may find LANG=C or whatever helps

the only thing I can think of that might be related is the recent icu update

jperkin: gist is here: gist.github.com/jfqd/43a2994f5f36e68896a501eda83bb66f

And I added LANG=C and will see what is happening :-)

Thx a lot for your help!

I'll dig around the icu/iconv/php-iconv test suites and see if they trigger anything

ok, good news is that php-iconv tests also fail and dump core, so I have plenty to go on ;)

ok found the problem, I'll get that in the next build

jperkin: Thx for digging into it! Be happy to test if the next trunk updates are ready :-)

I've merged it early so will let you know when available