group_exit_task的设置发生在函数fs/exec.c里面 ./fs/coredump.c:340: tsk->signal->group_exit_task = tsk; 是一个de_thread ./fs/coredump.c:450: current->signal->group_exit_task = NULL; ./fs/exec.c:1062: sig->group_exit_task = tsk; ./fs/exec.c:1090: * exit_notify() can't m...