Messages in this thread | | | Subject | Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes | From | Benjamin Herrenschmidt <> | Date | Tue, 05 Jun 2007 13:22:36 +1000 |
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On Mon, 2007-06-04 at 19:38 -0700, Davide Libenzi wrote: > > - I still think there's something wrong with dequeue_signal() being > > potentially called with a task different than current by signalfd, since > > __dequeue_signal() (among others) mucks around with current regardless. > > I'd love to just make signalfd's read() only do anything if current == > > ctx->tsk and remove the task argument from dequeue_signal... that would > > fix it nicely too no ? > > There's got to be a clean solution that does not limit signalfd, no? I > have no time to look at it immediately, but I can look into it in the > next few days, if someone else does not do it before...
Is there a real usage to dequeuing somebody else signals with signalfd ? If yes, then we can do something around the lines of passing task down to __dequeue_signal, though I'm not too sure waht this notifier is about and wether it might rely on being called from within the affected task context...
Ben.
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