sudden crash of X server with malloc in the journalctl

[Jan Kurella]

Hi there,

I am a bit puzzled, the second time today my screen went black and afet a
few seconds came up again with the login screen (ubuntu 22.04). I found the
following entries in log files:

$ journalctl -b -0
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: malloc():
unaligned tcache chunk detected
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Backtrace:
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 0:
/usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x557b5eed3ab9]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 1:
/lib/x86_64-linux-gnu/libc.so.6 (__sigaction+0x50) [0x7fc520bcd520]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 2:
/lib/x86_64-linux-gnu/libc.so.6 (pthread_kill+0x12c) [0x7fc520c219fc]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 3:
/lib/x86_64-linux-gnu/libc.so.6 (raise+0x16) [0x7fc520bcd476]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 4:
/lib/x86_64-linux-gnu/libc.so.6 (abort+0xd3) [0x7fc520bb37f3]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 5:
/lib/x86_64-linux-gnu/libc.so.6 (__fsetlocking+0x426) [0x7fc520c14676]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 6:
/lib/x86_64-linux-gnu/libc.so.6 (timer_settime+0x2cc) [0x7fc520c2bcfc]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 7:
/lib/x86_64-linux-gnu/libc.so.6 (malloc+0x33c) [0x7fc520c303dc]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 8:
/usr/lib/xorg/Xorg (SetGlyphPicture+0x15d) [0x557b5ee2d11d]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 9:
/usr/lib/xorg/Xorg (AddTraps+0x347a) [0x557b5ee358da]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 10:
/usr/lib/xorg/Xorg (SendErrorToClient+0x365) [0x557b5ed5d635]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 11:
/usr/lib/xorg/Xorg (InitFonts+0x3c4) [0x557b5ed616b4]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 12:
/lib/x86_64-linux-gnu/libc.so.6 (__libc_init_first+0x90) [0x7fc520bb4d90]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 13:
/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0x80) [0x7fc520bb4e40]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE) 14:
/usr/lib/xorg/Xorg (_start+0x25) [0x557b5ed4a605]
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: Fatal
server error:
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Caught signal 6 (Aborted). Server aborting
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: Please
consult the The X.Org Foundation support
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]:
 at http://wiki.x.org
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]:  for help.
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Please also check the log file at
"/home/kurella/.local/share/xorg/Xorg.0.log" for additional information.
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (II)
AIGLX: Suspending AIGLX clients for VT switch
Apr 09 15:40:09 DEBER54-LXL006 /usr/libexec/gdm-x-session[55646]: (EE)
Server terminated with error (1). Closing log file.
…
followed by many loglines from shutdown and reboot

$ less /home/kurella/.local/share/xorg/Xorg.0.log.old
[ 22758.826] (EE) event10 - HID 046a:0023: client bug: event processing
lagging behind by 29ms, your system is too slow
[ 23062.725] (EE)
[ 23062.725] (EE) Backtrace:
[ 23062.725] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139)
[0x557b5eed3ab9]
[ 23062.726] (EE) 1: /lib/x86_64-linux-gnu/libc.so.6 (__sigaction+0x50)
[0x7fc520bcd520]
[ 23062.727] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (pthread_kill+0x12c)
[0x7fc520c219fc]
[ 23062.728] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (raise+0x16)
[0x7fc520bcd476]
[ 23062.729] (EE) 4: /lib/x86_64-linux-gnu/libc.so.6 (abort+0xd3)
[0x7fc520bb37f3]
[ 23062.730] (EE) 5: /lib/x86_64-linux-gnu/libc.so.6 (__fsetlocking+0x426)
[0x7fc520c14676]
[ 23062.730] (EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (timer_settime+0x2cc)
[0x7fc520c2bcfc]
[ 23062.731] (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (malloc+0x33c)
[0x7fc520c303dc]
[ 23062.731] (EE) 8: /usr/lib/xorg/Xorg (SetGlyphPicture+0x15d)
[0x557b5ee2d11d]
[ 23062.731] (EE) 9: /usr/lib/xorg/Xorg (AddTraps+0x347a) [0x557b5ee358da]
[ 23062.731] (EE) 10: /usr/lib/xorg/Xorg (SendErrorToClient+0x365)
[0x557b5ed5d635]
[ 23062.732] (EE) 11: /usr/lib/xorg/Xorg (InitFonts+0x3c4) [0x557b5ed616b4]
[ 23062.732] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6
(__libc_init_first+0x90) [0x7fc520bb4d90]
[ 23062.733] (EE) 13: /lib/x86_64-linux-gnu/libc.so.6
(__libc_start_main+0x80) [0x7fc520bb4e40]
[ 23062.733] (EE) 14: /usr/lib/xorg/Xorg (_start+0x25) [0x557b5ed4a605]
[ 23062.733] (EE)
[ 23062.733] (EE)
Fatal server error:
[ 23062.733] (EE) Caught signal 6 (Aborted). Server aborting
[ 23062.733] (EE)
[ 23062.733] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[ 23062.733] (EE) Please also check the log file at
"/home/kurella/.local/share/xorg/Xorg.0.log" for additional information.
[ 23062.733] (EE)
[ 23062.733] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 23062.778] (EE) Server terminated with error (1). Closing log file.

It asked me to contact you, so here I am. Any idea what this is about?

Jan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.x.org/archives/xorg/attachments/20240409/cb3710ae/attachment.htm>