Dear Maintainer, just tried to reconstruct a better readable stack with function names, that would probably look like this:
0x...e27 | 0x00007ffff79c9e27: 0x00007ffff79c9e22 <gimp_stack_trace_print+914>: callq 0x7ffff79bf150 <backtrace@plt> 0x...4a0 | 0x00005555556274a0: 0x000055555562749b <gimp_eek+747>: callq 0x555555621790 <gimp_stack_trace_print@plt> 0x...8d8 | 0x00005555556278d8: 0x00005555556278d3 <gimp_fatal_error+19>: callq 0x5555556271b0 <gimp_eek> 0x...037 | 0x0000555555628037 <gimp_sigfatal_handler+39>: callq 0x5555556278f0 <gimp_terminate> 0x...8e0 | 0x00007ffff67068e0 <__restore_rt+0>: mov $0xf,%rax ; <signal handler called> 0x...f3b | 0x00007ffff656bf3b: 0x00007ffff656bf39 <__GI_raise+265>: syscall 0x...2f1 | 0x00007ffff656d2f1: 0x00007ffff656d2ec <__GI_abort+332>: callq 0x7ffff656be30 <__GI_raise> ; abort.c:79 raise (SIGABRT); 0x...a8a | 0x00007ffff6564a8a: 0x00007ffff6564a85 <__assert_fail_base+325>: callq 0x7ffff656d1a0 <__GI_abort> 0x...b02 | 0x00007ffff6564b02: 0x00007ffff6564afd <__GI___assert_fail+61>: callq 0x7ffff6564940 <__assert_fail_base> 0x...6bb | 0x00007ffff64326bb: 0x00007ffff64326b6 <poll_for_event+406>: callq 0x7ffff640bdd0 <__assert_fail@plt> 0x...760 | 0x00007ffff6432760 in poll_for_response (...) at ../../src/xcb_io.c:303 0x...a5d | 0x00007ffff6432a5d in _XEventsQueued (...) at ../../src/xcb_io.c:363 0x...7b7 | 0x00007ffff64247b7 in XPending (...) at ../../src/Pending.c:55 0x...8d5 | 0x00007ffff7a8a8d5 in gdk_check_xpending (...) at ./gdk/x11/gdkevents-x11.c:159 0x...821 | 0x00007ffff68fc821 in g_main_context_check (...) at ../../../../glib/gmain.c:3753 0x...df0 | 0x00007ffff68fcdf0 in g_main_context_iterate (...) at ../../../../glib/gmain.c:3917 0x...1d2 | 0x00007ffff68fd1d2 in g_main_loop_run (...) at ../../../../glib/gmain.c:4116 0x...cb7 | 0x0000555555626cb7 in app_run (...) at app.c:440 0x...5b5 | 0x00005555556265b5 in main (...) at main.c:524 I assume the point where things started to go wrong is in function poll_for_event. disassemble /m poll_for_event ... 260 throw_thread_fail_assert("Unknown sequence " 0x00007ffff643269c <poll_for_event+380>: lea 0x7241d(%rip),%rcx # 0x7ffff64a4ac0 <__PRETTY_FUNCTION__.15060> 0x00007ffff64326a3 <poll_for_event+387>: mov $0x107,%edx 0x00007ffff64326a8 <poll_for_event+392>: lea 0x71fc4(%rip),%rsi # 0x7ffff64a4673 0x00007ffff64326af <poll_for_event+399>: lea 0x72152(%rip),%rdi # 0x7ffff64a4808 0x00007ffff64326b6 <poll_for_event+406>: callq 0x7ffff640bdd0 <__assert_fail@plt> 0x00007ffff64326bb: nopl 0x0(%rax,%rax,1) ... (xcb_io.c) (gdb) list poll_for_event 233 static xcb_generic_reply_t *poll_for_event(Display *dpy, Bool queued_only) ... 258 if (XLIB_SEQUENCE_COMPARE(event_sequence, >, request)) 259 { 260 throw_thread_fail_assert("Unknown sequence " 261 "number while " 262 "processing queue", 263 xcb_xlib_threads_sequence_lost); If this issue is reproducable the output, when started from a terminal, could give further information. In that case would it also be great to have gdb and the debug symbols installed like described in [1]. Kind regards, Bernhard [1] https://wiki.debian.org/HowToGetABacktrace
> fatal error: Abortado Stack trace: ``` /usr/lib/libgimpbase-2.0.so.0(gimp_stack_trace_print+0x397)[0x7f8ed515fe27] gimp-2.10(+0xd34a0)[0x559a57d004a0] gimp-2.10(+0xd38d8)[0x559a57d008d8] gimp-2.10(+0xd4037)[0x559a57d01037] /lib/x86_64-linux-gnu/libpthread.so.0(+0x128e0)[0x7f8ed3e9d8e0] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x10b)[0x7f8ed3d01f3b] /lib/x86_64-linux-gnu/libc.so.6(abort+0x151)[0x7f8ed3d032f1] /lib/x86_64-linux-gnu/libc.so.6(+0x2ea8a)[0x7f8ed3cfaa8a] /lib/x86_64-linux-gnu/libc.so.6(+0x2eb02)[0x7f8ed3cfab02] /usr/lib/x86_64-linux-gnu/libX11.so.6(+0x436bb)[0x7f8ed3bc86bb] /usr/lib/x86_64-linux-gnu/libX11.so.6(+0x43760)[0x7f8ed3bc8760] /usr/lib/x86_64-linux-gnu/libX11.so.6(_XEventsQueued+0x5d)[0x7f8ed3bc8a5d] /usr/lib/x86_64-linux-gnu/libX11.so.6(XPending+0x57)[0x7f8ed3bba7b7] /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x588d5)[0x7f8ed52208d5] /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_check+0x1e1)[0x7f8ed4092821] /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x4ddf0)[0x7f8ed4092df0] /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0xb2)[0x7f8ed40931d2] gimp-2.10(app_run+0x357)[0x559a57cffcb7] gimp-2.10(main+0x395)[0x559a57cff5b5] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f8ed3ceeb17] gimp-2.10(_start+0x2a)[0x559a57cff73a] ``` apt install devscripts dpkg-dev xserver-xorg lightdm openbox gdb dbus-x11 gimp gimp-dbgsym libglib2.0-0-dbgsym libgtk2.0-0-dbgsym libx11-6-dbgsym libc6-dbg systemctl start lightdm mkdir glibc/orig -p cd glibc/orig apt source glibc cd ../.. mkdir libx11-6/orig -p cd libx11-6/orig apt source libx11-6 cd ../.. export DISPLAY=:0 gdb -q --args gimp directory /home/benutzer/glibc/orig/glibc-2.27/stdlib directory /home/benutzer/glibc/orig/glibc-2.27/sysdeps directory /home/benutzer/libx11-6/orig/libx11-1.6.7/src/util set pagination off set width 0 > fatal error: Abortado Stack trace: ``` /usr/lib/libgimpbase-2.0.so.0(gimp_stack_trace_print+0x397)[0x7f8ed515fe27] | 0x...e27 | 0x00007ffff79c9e27: 0x00007ffff79c9e22 <gimp_stack_trace_print+914>: callq 0x7ffff79bf150 <backtrace@plt> gimp-2.10(+0xd34a0)[0x559a57d004a0] | 0x...4a0 | 0x00005555556274a0: 0x000055555562749b <gimp_eek+747>: callq 0x555555621790 <gimp_stack_trace_print@plt> gimp-2.10(+0xd38d8)[0x559a57d008d8] | 0x...8d8 | 0x00005555556278d8: 0x00005555556278d3 <gimp_fatal_error+19>: callq 0x5555556271b0 <gimp_eek> gimp-2.10(+0xd4037)[0x559a57d01037] | 0x...037 | 0x0000555555628037 <gimp_sigfatal_handler+39>: callq 0x5555556278f0 <gimp_terminate> /lib/x86_64-linux-gnu/libpthread.so.0(+0x128e0)[0x7f8ed3e9d8e0] | 0x...8e0 | 0x00007ffff67068e0 <__restore_rt+0>: mov $0xf,%rax ; <signal handler called> /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x10b)[0x7f8ed3d01f3b] | 0x...f3b | 0x00007ffff656bf3b: 0x00007ffff656bf39 <__GI_raise+265>: syscall /lib/x86_64-linux-gnu/libc.so.6(abort+0x151)[0x7f8ed3d032f1] | 0x...2f1 | 0x00007ffff656d2f1: 0x00007ffff656d2ec <__GI_abort+332>: callq 0x7ffff656be30 <__GI_raise> ; abort.c:79 raise (SIGABRT); /lib/x86_64-linux-gnu/libc.so.6(+0x2ea8a)[0x7f8ed3cfaa8a] | 0x...a8a | 0x00007ffff6564a8a: 0x00007ffff6564a85 <__assert_fail_base+325>: callq 0x7ffff656d1a0 <__GI_abort> /lib/x86_64-linux-gnu/libc.so.6(+0x2eb02)[0x7f8ed3cfab02] | 0x...b02 | 0x00007ffff6564b02: 0x00007ffff6564afd <__GI___assert_fail+61>: callq 0x7ffff6564940 <__assert_fail_base> /usr/lib/x86_64-linux-gnu/libX11.so.6(+0x436bb)[0x7f8ed3bc86bb] | 0x...6bb | 0x00007ffff64326bb: 0x00007ffff64326b6 <poll_for_event+406>: callq 0x7ffff640bdd0 <__assert_fail@plt> /usr/lib/x86_64-linux-gnu/libX11.so.6(+0x43760)[0x7f8ed3bc8760] | 0x...760 | 0x00007ffff6432760 in poll_for_response (...) at ../../src/xcb_io.c:303 /usr/lib/x86_64-linux-gnu/libX11.so.6(_XEventsQueued+0x5d)[0x7f8ed3bc8a5d] | 0x...a5d | 0x00007ffff6432a5d in _XEventsQueued (...) at ../../src/xcb_io.c:363 /usr/lib/x86_64-linux-gnu/libX11.so.6(XPending+0x57)[0x7f8ed3bba7b7] | 0x...7b7 | 0x00007ffff64247b7 in XPending (...) at ../../src/Pending.c:55 /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x588d5)[0x7f8ed52208d5] | 0x...8d5 | 0x00007ffff7a8a8d5 in gdk_check_xpending (...) at ./gdk/x11/gdkevents-x11.c:159 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_check+0x1e1)[0x7f8ed4092821] | 0x...821 | 0x00007ffff68fc821 in g_main_context_check (...) at ../../../../glib/gmain.c:3753 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x4ddf0)[0x7f8ed4092df0] | 0x...df0 | 0x00007ffff68fcdf0 in g_main_context_iterate (...) at ../../../../glib/gmain.c:3917 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0xb2)[0x7f8ed40931d2] | 0x...1d2 | 0x00007ffff68fd1d2 in g_main_loop_run (...) at ../../../../glib/gmain.c:4116 gimp-2.10(app_run+0x357)[0x559a57cffcb7] | 0x...cb7 | 0x0000555555626cb7 in app_run (...) at app.c:440 gimp-2.10(main+0x395)[0x559a57cff5b5] | 0x...5b5 | 0x00005555556265b5 in main (...) at main.c:524 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f8ed3ceeb17] | 0x...b17 | gimp-2.10(_start+0x2a)[0x559a57cff73a] | 0x...73a | ``` disassemble /m poll_for_event ... 257 uint64_t request = X_DPY_GET_REQUEST(dpy); 258 if (XLIB_SEQUENCE_COMPARE(event_sequence, >, request)) 0x00007ffff643259f <poll_for_event+127>: mov %rdx,%rcx 0x00007ffff64325a2 <poll_for_event+130>: sub 0x98(%rbx),%rcx 0x00007ffff64325a9 <poll_for_event+137>: test %rcx,%rcx 0x00007ffff64325ac <poll_for_event+140>: jg 0x7ffff643264a <poll_for_event+298> 259 { 260 throw_thread_fail_assert("Unknown sequence " 0x00007ffff643269c <poll_for_event+380>: lea 0x7241d(%rip),%rcx # 0x7ffff64a4ac0 <__PRETTY_FUNCTION__.15060> 0x00007ffff64326a3 <poll_for_event+387>: mov $0x107,%edx 0x00007ffff64326a8 <poll_for_event+392>: lea 0x71fc4(%rip),%rsi # 0x7ffff64a4673 0x00007ffff64326af <poll_for_event+399>: lea 0x72152(%rip),%rdi # 0x7ffff64a4808 0x00007ffff64326b6 <poll_for_event+406>: callq 0x7ffff640bdd0 <__assert_fail@plt> 0x00007ffff64326bb: nopl 0x0(%rax,%rax,1) ... (xcb_io.c) (gdb) list poll_for_event 233 static xcb_generic_reply_t *poll_for_event(Display *dpy, Bool queued_only) 234 { 235 /* Make sure the Display's sequence numbers are valid */ 236 require_socket(dpy); 237 238 /* Precondition: This thread can safely get events from XCB. */ 239 assert(dpy->xcb->event_owner == XlibOwnsEventQueue && !dpy->xcb->event_waiter); 240 241 if(!dpy->xcb->next_event) { 242 if(queued_only) 243 dpy->xcb->next_event = xcb_poll_for_queued_event(dpy->xcb->connection); 244 else 245 dpy->xcb->next_event = xcb_poll_for_event(dpy->xcb->connection); 246 } 247 248 if(dpy->xcb->next_event) 249 { 250 PendingRequest *req = dpy->xcb->pending_requests; 251 xcb_generic_event_t *event = dpy->xcb->next_event; 252 uint64_t event_sequence = X_DPY_GET_LAST_REQUEST_READ(dpy); 253 widen(&event_sequence, event->full_sequence); 254 if(!req || XLIB_SEQUENCE_COMPARE(event_sequence, <, req->sequence) 255 || (event->response_type != X_Error && event_sequence == req->sequence)) 256 { 257 uint64_t request = X_DPY_GET_REQUEST(dpy); 258 if (XLIB_SEQUENCE_COMPARE(event_sequence, >, request)) 259 { 260 throw_thread_fail_assert("Unknown sequence " 261 "number while " 262 "processing queue", 263 xcb_xlib_threads_sequence_lost); 264 } 265 X_DPY_SET_LAST_REQUEST_READ(dpy, event_sequence); 266 dpy->xcb->next_event = NULL; 267 return (xcb_generic_reply_t *) event; 268 } 269 } 270 return NULL; 271 }