(gdb) p tsk$22 = (struct task_struct *) 0x61518880(gdb) p tsk->group_leader$23 = (struct task_struct *) 0x6203a100(gdb) bt#0 do_exit (code=11) at kernel/exit.c:899#1 0x000000006002fa4e in do_group_exit (exit_code=11) at kernel/exit.c:1077#2 0x00000000600391b2 in get_signal_to_deliver (info=0x61513ec0, return_ka=0x61513f40, regs=0x61518be0, cookie=<value optimized out>) at kernel/signal.c:1967#3 0x000000006001467c in kern_do_signal () at arch/um/kernel/signal.c:100#4 do_signal () at arch/um/kernel/signal.c:158#5 0x0000000060013c6a in interrupt_end () at arch/um/kernel/process.c:121#6 0x0000000060013cbb in fork_handler () at arch/um/kernel/process.c:179#7 0x0000000000000000 in ?? ()