Messages in this thread | | | Date | Thu, 18 Jan 2007 08:38:16 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] futex null pointer timeout |
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* Daniel Walker <dwalker@mvista.com> wrote:
> This fix is mostly from Thomas .. > > The problem was that a futex can be called with a zero timeout (0 > seconds, 0 nanoseconds) and it's a valid expired timeout. However, the > current futex in -rt assumes a zero timeout is an infinite timeout. > > Kevin Hilman found this using LTP's nptl01 test case which would soft > hang occasionally. > > The patch reworks do_futex, and futex_wait* so a NULL pointer in the > timeout position is infinite, and anything else is evaluated as a real > timeout.
thanks, applied.
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