send_sigtrap
send_sigtrap(®s->regs, 0);
extern void send_sigtrap(struct pt_regs *regs, int error_code, int si_code);
send_sigtrap(regs, 0, TRAP_BRKPT);
send_sigtrap(regs, 0, get_si_code(dr6));
bool send_sigtrap = utask->autask.saved_tf;
send_sigtrap = false;
if (send_sigtrap)