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On Sat, 8 Feb 2003, Linus Torvalds wrote: > Interesting. Especially as the last thing exit_notify() does (just a few > lines above the schedule()) is to do > > tsk->state = TASK_ZOMBIE; > > and that schedule() _really_ really shouldn't return. Regardless of any > signal handler changes. the proper way to avoid such scenarios (besides removing tasks from all waitqueues) is to remove the thread from all the PID-hashes prior setting it to TASK_ZOMBIE. Since any signal-sending needs a task pointer, and the task pointer can only be found by looking it up in the hash, the proper way to exclude signal related wakeups (without introducing special handling into the wakeup code), is to remove the thread from the hash. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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