On Tue, Sep 25, 2018 at 12:09:53PM +0200, Philipp Arras wrote:
> Hi everyone,
> 
> since I have upgraded xorg a few days ago on my arch linux system the
> xorg server crashes approximately twice a day. I have attached my
> Xorg.0.log.
> 
> My system logs tell me:
> 
> Sep 25 11:51:41 santiago audit[13540]: ANOM_ABEND auid=4294967295 uid=0 gid=0 
> ses=4294967295 pid=13540 comm="Xorg" exe="/usr/lib/Xorg" sig=6 res=1
> Sep 25 11:51:41 santiago kernel: audit: type=1701 audit(1537869101.043:138): 
> auid=4294967295 uid=0 gid=0 ses=4294967295 pid=13540 comm="Xorg" 
> exe="/usr/lib/Xorg" sig=6 res=1
> Sep 25 11:51:41 santiago kernel: audit: type=1130 audit(1537869101.067:139): 
> pid=1 uid=0 auid=4294967295 ses=4294967295 
> msg='unit=systemd-coredump@3-26694-0 comm="systemd" 
> exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
> Sep 25 11:51:41 santiago audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 
> ses=4294967295 msg='unit=systemd-coredump@3-26694-0 comm="systemd" 
> exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
> Sep 25 11:51:41 santiago systemd[1]: Started Process Core Dump (PID 26694/UID 
> 0).
> -- Subject: Unit [email protected] has finished start-up
> -- Defined-By: systemd
> -- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
> -- 
> -- Unit [email protected] has finished starting up.
> -- 
> -- The start-up result is RESULT.
> Sep 25 11:51:42 santiago systemd-logind[432]: Session 5 logged out. Waiting 
> for processes to exit.
> Sep 25 11:51:43 santiago systemd-coredump[26695]: Process 13540 (Xorg) of 
> user 0 dumped core.
>                                                   
>                                                   Stack trace of thread 13540:
>                                                   #0  0x00007fc84263dd7f 
> raise (libc.so.6)
>                                                   #1  0x00007fc842628672 
> abort (libc.so.6)
>                                                   #2  0x000055f6b8ba9cca 
> OsAbort (Xorg)
>                                                   #3  0x000055f6b8ba9dbf 
> FatalError (Xorg)
>                                                   #4  0x000055f6b8bb734e n/a 
> (Xorg)
>                                                   #5  0x00007fc84263de00 
> __restore_rt (libc.so.6)
>                                                   #6  0x00007fc84263dd7f 
> raise (libc.so.6)
>                                                   #7  0x00007fc842628672 
> abort (libc.so.6)
>                                                   #8  0x00007fc842628548 
> __assert_fail_base.cold.0 (libc.so.6)
>                                                   #9  0x00007fc842636396 
> __assert_fail (libc.so.6)
>                                                   #10 0x00007fc83cb9947b n/a 
> (libinput.so.10)
>                                                   #11 0x00007fc83cb99e78 n/a 
> (libinput.so.10)
>                                                   #12 0x00007fc83cba197c n/a 
> (libinput.so.10)
>                                                   #13 0x00007fc83cba137f 
> libinput_dispatch (libinput.so.10)

this indicates an assert in libinput, which indicates that there's a bug in
libinput. Please file a bug here:
https://gitlab.freedesktop.org/libinput/libinput/issues, following the
steps here:
https://wayland.freedesktop.org/libinput/doc/latest/reporting-bugs.html

ideally you could try to figure out what input sequence triggers the bug and
record it, should be easy to fix if reproducible.

Cheers,
   Peter
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