Messages in this thread | | | Subject | Re: [PATCH] Fix x86_64 TIF_SYSCALL_TRACE race in entry.S | From | Andi Kleen <> | Date | Sat, 27 Oct 2007 21:04:57 +0200 |
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Mathieu Desnoyers <compudj@krystal.dyndns.org> writes:
> We make sure that the thread flag read is coherent between our new test and the ALLWORK_MASK test by first saving it in a register used for both comparisons. >
That doesn't make sense. If someone is setting those asynchronously you can always race.
You should really just stop the process like ptrace does before changing such things.
-Andi
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