[arch-general] uwsgi-2.0.14-15 segfaults with php plugin

[David Runge]

Hey all,

ran into the issue, that after updating from uwsgi 2.0.14-1 to uwsgi
2.0.14-5 (php plugin of the same version), all php based webapps make
uwsgi segfault (tested with wordpress and stikked)!

Something like the below will happen (including after reboot):

Jan 17 16:24:20 frqrec systemd[1]: Starting uWSGI service unit...
Jan 17 16:24:20 frqrec uwsgi[2370]: [uWSGI] getting INI configuration
from /etc/uwsgi/wordpress.ini
Jan 17 16:24:20 frqrec uwsgi[2370]: *** Starting uWSGI 2.0.14 (64bit) on
[Tue Jan 17 16:24:20 2017] ***
Jan 17 16:24:20 frqrec uwsgi[2370]: compiled with version: 6.3.1
20170109 on 10 January 2017 00:34:54
Jan 17 16:24:20 frqrec uwsgi[2370]: os: Linux-4.8.13-1-ARCH #1 SMP
PREEMPT Fri Dec 9 07:24:34 CET 2016
Jan 17 16:24:20 frqrec uwsgi[2370]: nodename: frqrec
Jan 17 16:24:20 frqrec uwsgi[2370]: machine: x86_64
Jan 17 16:24:20 frqrec uwsgi[2370]: clock source: unix
Jan 17 16:24:20 frqrec uwsgi[2370]: pcre jit disabled
Jan 17 16:24:20 frqrec uwsgi[2370]: detected number of CPU cores: 2
Jan 17 16:24:20 frqrec uwsgi[2370]: current working directory: /
Jan 17 16:24:20 frqrec uwsgi[2370]: detected binary path: /usr/bin/uwsgi
Jan 17 16:24:20 frqrec uwsgi[2370]: setgid() to 33
Jan 17 16:24:20 frqrec uwsgi[2370]: setuid() to 33
Jan 17 16:24:20 frqrec uwsgi[2370]: your processes number limit is 15780
Jan 17 16:24:20 frqrec uwsgi[2370]: your memory page size is 4096 bytes
Jan 17 16:24:20 frqrec uwsgi[2370]: detected max file descriptor number:
1024
Jan 17 16:24:20 frqrec uwsgi[2370]: lock engine: pthread robust mutexes
Jan 17 16:24:20 frqrec uwsgi[2370]: thunder lock: disabled (you can
enable it with --thunder-lock)
Jan 17 16:24:20 frqrec uwsgi[2370]: *** Cache "wordpress" initialized:
64MB (key: 2136 bytes, keys: 2136000 bytes, data: 65536000 bytes,
bitmap: 0 bytes) preallocated ***
Jan 17 16:24:20 frqrec uwsgi[2370]: - SystemD socket activation detected
-
Jan 17 16:24:20 frqrec uwsgi[2370]: uwsgi socket 1 attached to UNIX
address /run/uwsgi/wordpress.sock fd 3
Jan 17 16:24:20 frqrec uwsgi[2370]: !!! uWSGI process 2370 got
Segmentation Fault !!!
Jan 17 16:24:20 frqrec uwsgi[2370]: *** backtrace of 2370 ***
Jan 17 16:24:20 frqrec uwsgi[2370]: /usr/bin/uwsgi(uwsgi_backtrace+0x2c)
[0x466eec]
Jan 17 16:24:20 frqrec uwsgi[2370]: /usr/bin/uwsgi(uwsgi_segfault+0x21)
[0x4672b1]
Jan 17 16:24:20 frqrec uwsgi[2370]: /usr/lib/libc.so.6(+0x330b0)
[0x7f9a019ea0b0]
Jan 17 16:24:20 frqrec uwsgi[2370]:
/usr/lib/uwsgi/php_plugin.so(+0x53ca) [0x7f9a001fa3ca]
Jan 17 16:24:20 frqrec uwsgi[2370]: *** end of backtrace ***
Jan 17 16:24:20 frqrec systemd[1]: uwsgi-private at wordpress.service: Main
process exited, code=exited, status=1/FAILURE
Jan 17 16:24:20 frqrec systemd[1]: Failed to start uWSGI service unit.
Jan 17 16:24:20 frqrec systemd[1]: uwsgi-private at wordpress.service: Unit
entered failed state.
Jan 17 16:24:20 frqrec systemd[1]: uwsgi-private at wordpress.service:
Failed with result 'exit-code'.

Reverting back to uwsgi 2.0.14-1 fixes the problem (after restarting the
socket, that activates the webapp).

As a sidenote: I'm using the hardening and socket activation options as
explained here, which shouldn't have much of an effect on the uwsgi
itself though):
https://wiki.archlinux.org/index.php/UWSGI#Socket_activation
https://wiki.archlinux.org/index.php/UWSGI#Hardening_uWSGI

Has anyone had the same issue?
I can't seem to find out, what has changed between revision 1 and 5 or
if it needs another rebuild.

Best,
David


-- 
https://sleepmap.de
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