Dear Maintainer, I tried to add line information using the dbgsym packages. That led me to libc trying to print the message "double free or corruption (out)".
Kind regards, Bernhard https://sources.debian.org/src/glibc/2.36-8/malloc/malloc.c/ 4584 malloc_printerr ("double free or corruption (out)"); 0: Xorg (OsLookupColor+0x139) [0x55e578a89cc9] in OsSigHandler at ../../../../os/osinit.c:138 1: libc.so.6 (__sigaction+0x40) [0x7fee08244f90] 2: libc.so.6 (pthread_key_delete+0x14c) [0x7fee08293ccc] in __pthread_kill_implementation at ./nptl/pthread_kill.c:43 3: libc.so.6 (gsignal+0x12) [0x7fee08244ef2] in __GI_raise at ../sysdeps/posix/raise.c:26 4: libc.so.6 (abort+0xd3) [0x7fee0822f472] in __GI_abort at ./stdlib/abort.c:79 5: libc.so.6 (__fsetlocking+0x290) [0x7fee082882d0] in __libc_message at ../sysdeps/posix/libc_fatal.c:155 6: libc.so.6 (timer_settime+0x37a) [0x7fee0829d64a] in malloc_printerr at ./malloc/malloc.c:5660 7: libc.so.6 (__default_morecore+0x8a0) [0x7fee0829f6b0] in _int_free at ./malloc/malloc.c:4584 8: libc.so.6 (__libc_free+0x6f) [0x7fee082a1d2f] in __GI___libc_free at ./malloc/malloc.c:3385 9: intel_drv.so (?+0x0) [0x7fee075d8a0f] in I810SetPortAttribute / RegionUninit at /usr/include/xorg/regionstr.h:166 10: Xorg (DamageDestroy+0x23e) [0x55e5789f627e] in damageDestroyPixmap at ../../../../../miext/damage/damage.c:1504 11: Xorg (ShmRegisterFbFuncs+0x80e) [0x55e5789b084e] in XvDestroyPixmap at ../../../../Xext/xvmain.c:369 12: Xorg (SyncVerifyFence+0x3354) [0x55e5789af214] in ShmDestroyPixmap at ../../../../Xext/shm.c:260 13: Xorg (RegisterExtensionNames+0x1dd) [0x55e57893d22d] in doFreeResource at ../../../../dix/resource.c:885 14: Xorg (FreeResource+0xe9) [0x55e57893de19] in FreeResource at ../../../../dix/resource.c:915 15: Xorg (dixDestroyPixmap+0x27e) [0x55e57891196e] in ProcFreePixmap at ../../../../dix/dispatch.c:1538 16: Xorg (SendErrorToClient+0x3d4) [0x55e578916734] in Dispatch at ../../../../dix/dispatch.c:550 17: Xorg (InitFonts+0x3bc) [0x55e57891a6cc] in dix_main at ../../../../dix/main.c:272
