GNU gdb (Ubuntu 8.2.90-0ubuntu1) 8.2.90 Copyright (C) 2019 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-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 /usr/lib/packagekit/packagekitd... (No debugging symbols found in /usr/lib/packagekit/packagekitd) (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 Starting program: /usr/lib/packagekit/packagekitd [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7ffff6557700 (LWP 3549)] [New Thread 0x7ffff5d56700 (LWP 3550)] [New Thread 0x7ffff54cc700 (LWP 3551)] [Detaching after fork from child process 3552] [Thread 0x7ffff54cc700 (LWP 3551) exited] Thread 1 "packagekitd" received signal SIGINT, Interrupt. 0x00007ffff7933ba9 in __GI___poll (fds=0x555555660590, nfds=2, timeout=4995) at ../sysdeps/unix/sysv/linux/poll.c:29 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory. (gdb) backtrace full #0 0x00007ffff7933ba9 in __GI___poll (fds=0x555555660590, nfds=2, timeout=4995) at ../sysdeps/unix/sysv/linux/poll.c:29 resultvar = 18446744073709551100 sc_cancel_oldtype = 0 sc_ret = #1 0x00007ffff7b1ac76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007ffff7b1b002 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x0000555555561d14 in main () No symbol table info available. (gdb) info registers rax 0xfffffffffffffdfc -516 rbx 0x555555660590 93824993330576 rcx 0x7ffff7933ba9 140737347009449 rdx 0x1383 4995 rsi 0x2 2 rdi 0x555555660590 93824993330576 rbp 0x2 0x2 rsp 0x7fffffffe180 0x7fffffffe180 r8 0x0 0 r9 0x1 1 r10 0x5555555c3700 93824992687872 r11 0x293 659 r12 0x1383 4995 r13 0x7ffff7b2a490 140737349067920 r14 0x1383 4995 r15 0x2 2 rip 0x7ffff7933ba9 0x7ffff7933ba9 <__GI___poll+73> 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/16i $pc => 0x7ffff7933ba9 <__GI___poll+73>: cmp $0xfffffffffffff000,%rax 0x7ffff7933baf <__GI___poll+79>: ja 0x7ffff7933be2 <__GI___poll+130> 0x7ffff7933bb1 <__GI___poll+81>: mov %r8d,%edi 0x7ffff7933bb4 <__GI___poll+84>: mov %eax,0xc(%rsp) 0x7ffff7933bb8 <__GI___poll+88>: callq 0x7ffff794e310 <__libc_disable_asynccancel> 0x7ffff7933bbd <__GI___poll+93>: mov 0xc(%rsp),%eax 0x7ffff7933bc1 <__GI___poll+97>: add $0x10,%rsp 0x7ffff7933bc5 <__GI___poll+101>: pop %rbx 0x7ffff7933bc6 <__GI___poll+102>: pop %rbp 0x7ffff7933bc7 <__GI___poll+103>: pop %r12 0x7ffff7933bc9 <__GI___poll+105>: retq 0x7ffff7933bca <__GI___poll+106>: nopw 0x0(%rax,%rax,1) 0x7ffff7933bd0 <__GI___poll+112>: mov 0xd2299(%rip),%rdx # 0x7ffff7a05e70 0x7ffff7933bd7 <__GI___poll+119>: neg %eax 0x7ffff7933bd9 <__GI___poll+121>: mov %eax,%fs:(%rdx) 0x7ffff7933bdc <__GI___poll+124>: mov $0xffffffff,%eax (gdb) thread apply all backtrace Thread 3 (Thread 0x7ffff5d56700 (LWP 3550)): #0 0x00007ffff7933ba9 in __GI___poll (fds=0x5555555deca0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff7b1ac76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff7b1b002 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff7d58b76 in ?? () from /lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007ffff7b4394d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff7a16182 in start_thread (arg=) at pthread_create.c:486 #6 0x00007ffff793ffaf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7ffff6557700 (LWP 3549)): #0 0x00007ffff7933ba9 in __GI___poll (fds=0x5555555ccff0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff7b1ac76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff7b1ad9c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff7b1ade1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007ffff7b4394d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff7a16182 in start_thread (arg=) at pthread_create.c:486 #6 0x00007ffff793ffaf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7ffff7389900 (LWP 3545)): #0 0x00007ffff7933ba9 in __GI___poll (fds=0x555555660590, nfds=2, timeout=4995) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff7b1ac76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff7b1b002 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x0000555555561d14 in main () (gdb) quit A debugging session is active. Inferior 1 [process 3545] will be killed. Quit anyway? (y or n) y