return __send_signal(sig, info, t, group, from_ancestor_ns);
}
-static void print_fatal_signal(struct pt_regs *regs, int signr)
+static void print_fatal_signal(int signr)
{
+ struct pt_regs *regs = signal_pt_regs();
printk("%s/%d: potentially unexpected fatal signal %d.\n",
current->comm, task_pid_nr(current), signr);
preempt_disable();
read_unlock(&tasklist_lock);
preempt_enable_no_resched();
- schedule();
+ freezable_schedule();
} else {
/*
* By the time we got the lock, our tracer went away.
read_unlock(&tasklist_lock);
}
- /*
- * While in TASK_TRACED, we were considered "frozen enough".
- * Now that we woke up, it's crucial if we're supposed to be
- * frozen that we freeze now before running anything substantial.
- */
- try_to_freeze();
-
/*
* We are back. Now reacquire the siglock before touching
* last_siginfo, so that we are sure to have synchronized with
}
/* Now we don't run again until woken by SIGCONT or SIGKILL */
- schedule();
+ freezable_schedule();
return true;
} else {
/*
}
}
-static int ptrace_signal(int signr, siginfo_t *info,
- struct pt_regs *regs, void *cookie)
+static int ptrace_signal(int signr, siginfo_t *info)
{
- ptrace_signal_deliver(regs, cookie);
+ ptrace_signal_deliver();
/*
* We do not check sig_kernel_stop(signr) but set this marker
* unconditionally because we do not know whether debugger will
if (unlikely(uprobe_deny_signal()))
return 0;
-relock:
/*
- * We'll jump back here after any time we were stopped in TASK_STOPPED.
- * While in TASK_STOPPED, we were considered "frozen enough".
- * Now that we woke up, it's crucial if we're supposed to be
- * frozen that we freeze now before running anything substantial.
+ * Do this once, we can't return to user-mode if freezing() == T.
+ * do_signal_stop() and ptrace_stop() do freezable_schedule() and
+ * thus do not need another check after return.
*/
try_to_freeze();
+relock:
spin_lock_irq(&sighand->siglock);
/*
* Every stopped thread goes here after wakeup. Check to see if
break; /* will return 0 */
if (unlikely(current->ptrace) && signr != SIGKILL) {
- signr = ptrace_signal(signr, info,
- regs, cookie);
+ signr = ptrace_signal(signr, info);
if (!signr)
continue;
}
if (sig_kernel_coredump(signr)) {
if (print_fatal_signals)
- print_fatal_signal(regs, info->si_signo);
+ print_fatal_signal(info->si_signo);
/*
* If it was able to dump core, this kills all
* other threads in the group and synchronizes with
* first and our do_group_exit call below will use
* that value and ignore the one we pass it.
*/
- do_coredump(info, regs);
+ do_coredump(info);
}
/*