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[[!meta title="GDB: bt on the signal thread"]]

[[!tag open_issue_gdb]]

    (gdb) r
    Starting program: /media/data/home/tschwinge/tmp/h 
    [New Thread 26731.15]
    
    Breakpoint 1, 0x08048236 in main ()
    (gdb) info threads
      5 Thread 26731.15  0x080a97fc in mach_msg_trap ()
    * 4 Thread 26731.14  0x08048236 in main ()
    (gdb) thread 5
    [Switching to thread 5 (Thread 26731.15)]#0  0x080a97fc in mach_msg_trap ()
    (gdb) bt
    #0  0x080a97fc in mach_msg_trap ()
    #1  0x080a272e in mach_msg ()
    #2  0x080a9934 in mach_msg_server_timeout ()
    #3  0x080a99ff in mach_msg_server ()
    #4  0x080a327e in _hurd_msgport_receive ()
    Cannot access memory at address 0x1012000