GNU gdb (GDB) 7.1-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/mutter...Reading symbols from /usr/lib/debug/usr/bin/mutter...done. done. (gdb) handle SIG33 pass nostop noprint' Signal Stop Print Pass to program Description SIG33 No No Yes Real-time event 33 (gdb) set pagination 0 (gdb) run --replace Starting program: /usr/bin/mutter --replace [Thread debugging using libthread_db enabled] Program received signal SIGINT, Interrupt. 0x0012e416 in __kernel_vsyscall () (gdb) backtrace fiull #0 0x0012e416 in __kernel_vsyscall () No symbol table info available. #1 0x00e02e3b in *__GI___poll (fds=0xe9aff4, nfds=8, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:83 resultvar = oldtype = result = #2 0x00b1cbdb in g_poll (fds=0x84ee670, nfds=8, timeout=-1) at /build/buildd/glib2.0-2.25.13/glib/gpoll.c:126 No locals. #3 0x00b0f58c in g_main_context_poll (context=0x80e6848, block=, dispatch=1, self=0x80e0008) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:3063 poll_func = 0xb1cbb0 #4 g_main_context_iterate (context=0x80e6848, block=, dispatch=1, self=0x80e0008) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:2745 max_priority = 2147483647 timeout = -1 some_ready = nfds = 8 allocated_nfds = fds = __PRETTY_FUNCTION__ = "g_main_context_iterate" #5 0x00b0fcf7 in g_main_loop_run (loop=0x80ec7f8) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:2958 self = 0x80e0008 __PRETTY_FUNCTION__ = "g_main_loop_run" #6 0x08082f83 in main (argc=1, argv=0xbffff3f4) at core/main.c:725 act = {__sigaction_handler = {sa_handler = 0x8083410 , sa_sigaction = 0x8083410 }, sa_mask = {__val = {0 }}, sa_flags = 0, sa_restorer = 0xbffff204} empty_mask = {__val = {0 }} log_domains = {0x0, 0x80c8bb6 "mutter", 0x80c8a10 "Gtk", 0x80c8a14 "Gdk", 0x80c8a18 "GLib", 0x80c8a1d "Pango", 0x80c8a23 "GLib-GObject", 0x80c8a30 "GThread"} i = 0 channel = ctx = (gdb) info registers eax 0xfffffdfc -516 ecx 0x8 8 edx 0xffffffff -1 ebx 0x84ee670 139388528 esp 0xbfffedc0 0xbfffedc0 ebp 0xbfffedd8 0xbfffedd8 esi 0x80e6848 135161928 edi 0xe9aff4 15314932 eip 0x12e416 0x12e416 <__kernel_vsyscall+2> eflags 0x246 [ PF ZF IF ] cs 0x73 115 ss 0x7b 123 ds 0x7b 123 es 0x7b 123 fs 0x0 0 gs 0x33 51 (gdb) x/16i $pc => 0x12e416 <__kernel_vsyscall+2>: ret 0x12e417: add %ch,(%esi) 0x12e419: jae 0x12e483 0x12e41b: jae 0x12e491 0x12e41d: jb 0x12e493 0x12e41f: popa 0x12e420: bound %eax,(%eax) 0x12e422: cs 0x12e423: push $0x687361 0x12e428: cs 0x12e429: fs 0x12e42a: jns 0x12e49a 0x12e42c: jae 0x12e4a7 0x12e42e: insl (%dx),%es:(%edi) 0x12e42f: add %ch,(%esi) 0x12e431: fs (gdb) thread apply all backtrace Thread 1 (Thread 0xb7fe1880 (LWP 11956)): #0 0x0012e416 in __kernel_vsyscall () #1 0x00e02e3b in *__GI___poll (fds=0xe9aff4, nfds=8, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:83 #2 0x00b1cbdb in g_poll (fds=0x84ee670, nfds=8, timeout=-1) at /build/buildd/glib2.0-2.25.13/glib/gpoll.c:126 #3 0x00b0f58c in g_main_context_poll (context=0x80e6848, block=, dispatch=1, self=0x80e0008) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:3063 #4 g_main_context_iterate (context=0x80e6848, block=, dispatch=1, self=0x80e0008) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:2745 #5 0x00b0fcf7 in g_main_loop_run (loop=0x80ec7f8) at /build/buildd/glib2.0-2.25.13/glib/gmain.c:2958 #6 0x08082f83 in main (argc=1, argv=0xbffff3f4) at core/main.c:725 (gdb) quit A debugging session is active. Inferior 1 [process 11956] will be killed. Quit anyway? (y or n)