GNU gdb (GDB) 7.9 Copyright (C) 2015 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 "x86_64-unknown-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from xfce4-appearance-settings...(no debugging symbols found)...done. (gdb) handle SOIGIG33 pass nostop noprint Signal Stop Print Pass to program Description SIG33 No No Yes Real-time event 33 (gdb) set paginoation 0 (gdb) run Starting program: /usr/bin/xfce4-appearance-settings [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7fffe97d6700 (LWP 1548)] Program received signal SIGINT, Interrupt. 0x00007ffff5f1450d in read () from /usr/lib/libc.so.6 (gdb) backgtrace full #0 0x00007ffff5f1450d in read () from /usr/lib/libc.so.6 No symbol table info available. #1 0x00007ffff5eacc30 in __GI__IO_file_underflow () from /usr/lib/libc.so.6 No symbol table info available. #2 0x00007ffff5eadb1e in __GI__IO_default_uflow () from /usr/lib/libc.so.6 No symbol table info available. #3 0x00007ffff5ea282a in __GI__IO_getline_info () from /usr/lib/libc.so.6 No symbol table info available. #4 0x00007ffff5ea1764 in fgets () from /usr/lib/libc.so.6 No symbol table info available. #5 0x00007ffff6b72800 in ?? () from /usr/lib/libxfce4util.so.7 No symbol table info available. #6 0x00007ffff6b707d8 in xfce_rc_simple_open () from /usr/lib/libxfce4util.so.7 No symbol table info available. #7 0x0000000000404825 in ?? () No symbol table info available. #8 0x00007ffff644262d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #9 0x00007ffff6442a08 in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #10 0x00007ffff6442d32 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #11 0x00007ffff76b5467 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 No symbol table info available. #12 0x000000000040450c in ?? () No symbol table info available. #13 0x00007ffff5e59800 in __libc_start_main () from /usr/lib/libc.so.6 No symbol table info available. #14 0x00000000004045e9 in ?? () No symbol table info available. (gdb) info registers rax 0xe0d 3597 rbx 0x21f0970 35588464 rcx 0xffffffffffffffff -1 rdx 0x1000 4096 rsi 0x7ffff7fbf000 140737353871360 rdi 0x9 9 rbp 0x7fffffffc320 0x7fffffffc320 rsp 0x7fffffffc240 0x7fffffffc240 r8 0xffffffff 4294967295 r9 0x0 0 r10 0x22 34 r11 0x293 659 r12 0xa 10 r13 0x1fff 8191 r14 0x0 0 r15 0x21f0970 35588464 rip 0x7ffff5f1450d 0x7ffff5f1450d eflags 0x293 [ CF AF SF IF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 (gdb) x/61616uii $ppc => 0x7ffff5f1450d : mov (%rsp),%rdi 0x7ffff5f14511 : mov %rax,%rdx 0x7ffff5f14514 : callq 0x7ffff5f2da70 <__libc_disable_asynccancel> 0x7ffff5f14519 : mov %rdx,%rax 0x7ffff5f1451c : add $0x8,%rsp 0x7ffff5f14520 : cmp $0xfffffffffffff001,%rax 0x7ffff5f14526 : jae 0x7ffff5f14529 0x7ffff5f14528 : retq 0x7ffff5f14529 : mov 0x2c1908(%rip),%rcx # 0x7ffff61d5e38 0x7ffff5f14530 : neg %eax 0x7ffff5f14532 : mov %eax,%fs:(%rcx) 0x7ffff5f14535 : or $0xffffffffffffffff,%rax 0x7ffff5f14539 : retq 0x7ffff5f1453a: nopw 0x0(%rax,%rax,1) 0x7ffff5f14540 : cmpl $0x0,0x2c76f9(%rip) # 0x7ffff61dbc40 <__libc_multiple_threads> 0x7ffff5f14547 : jne 0x7ffff5f14559 (gdb) thread apply all backtrace Thread 2 (Thread 0x7fffe97d6700 (LWP 1548)): #0 0x00007ffff5f184ed in poll () from /usr/lib/libc.so.6 #1 0x00007ffff64429a4 in ?? () from /usr/lib/libglib-2.0.so.0 #2 0x00007ffff6442d32 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #3 0x00007ffff5003d86 in ?? () from /usr/lib/libgio-2.0.so.0 #4 0x00007ffff6469215 in ?? () from /usr/lib/libglib-2.0.so.0 #5 0x00007ffff61e3374 in start_thread () from /usr/lib/libpthread.so.0 #6 0x00007ffff5f2127d in clone () from /usr/lib/libc.so.6 Thread 1 (Thread 0x7ffff7fa0900 (LWP 1544)): #0 0x00007ffff5f1450d in read () from /usr/lib/libc.so.6 #1 0x00007ffff5eacc30 in __GI__IO_file_underflow () from /usr/lib/libc.so.6 #2 0x00007ffff5eadb1e in __GI__IO_default_uflow () from /usr/lib/libc.so.6 #3 0x00007ffff5ea282a in __GI__IO_getline_info () from /usr/lib/libc.so.6 #4 0x00007ffff5ea1764 in fgets () from /usr/lib/libc.so.6 #5 0x00007ffff6b72800 in ?? () from /usr/lib/libxfce4util.so.7 #6 0x00007ffff6b707d8 in xfce_rc_simple_open () from /usr/lib/libxfce4util.so.7 #7 0x0000000000404825 in ?? () #8 0x00007ffff644262d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #9 0x00007ffff6442a08 in ?? () from /usr/lib/libglib-2.0.so.0 #10 0x00007ffff6442d32 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #11 0x00007ffff76b5467 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 #12 0x000000000040450c in ?? () #13 0x00007ffff5e59800 in __libc_start_main () from /usr/lib/libc.so.6 #14 0x00000000004045e9 in ?? () (gdb) quit A debugging session is active. Inferior 1 [process 1544] will be killed. Quit anyway? (y or n) y