umockdev's test suite now started to see this crash in current Ubuntu jammy. Simple reproducer:
$ cat tests/xorg-dummy.conf Section "Device" Identifier "test" Driver "dummy" EndSection $ Xorg -config tests/xorg-dummy.conf -logfile /tmp/log -once :5 Then, run at least one query on it, like this: $ env DISPLAY=:5 xinput Then pkill/kill or Control-C the Xorg process, and it will crash: double free or corruption (!prev) (EE) (EE) Backtrace: (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x55e2b1c75d39] (EE) 1: /lib/x86_64-linux-gnu/libc.so.6 (__sigaction+0x50) [0x7f384162f520] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (pthread_kill+0xf8) [0x7f3841683808] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (raise+0x16) [0x7f384162f476] (EE) 4: /lib/x86_64-linux-gnu/libc.so.6 (abort+0xd7) [0x7f38416157b7] (EE) 5: /lib/x86_64-linux-gnu/libc.so.6 (__fsetlocking+0x426) [0x7f38416765e6] (EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (timer_settime+0x2cc) [0x7f384168dadc] (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (__default_morecore+0x8bc) [0x7f384168f84c] (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (free+0x55) [0x7f3841691ce5] (EE) 9: /usr/lib/xorg/Xorg (config_fini+0x402) [0x55e2b1b6cb22] (EE) 10: /usr/lib/xorg/Xorg (ddxGiveUp+0x62) [0x55e2b1b4fa22] (EE) 11: /usr/lib/xorg/Xorg (InitFonts+0x669) [0x55e2b1b12d69] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_init_first+0x90) [0x7f3841616fd0] (EE) 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0x7d) [0x7f384161707d] (EE) 14: /usr/lib/xorg/Xorg (_start+0x2e) [0x55e2b1afbf0e] (EE) (EE) Received signal 6 sent by process 520, uid 0 After that it hangs and can't be cleaned up any more (zombie) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1853266 Title: Xorg/Xwayland segfaults in OsLookupColor() from funlockfile() from glamor_get_pixmap_texture() from glamor_create_gc() To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1853266/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp