Rik van Riel wrote:

This looks a bit like there might be a race with the
pagetable mapping or read()ing of the file. It would
explain the three `suspicious' segfaults I've seen in
the last few days...

The TLB flush code contains various races if IPI's are sent between
switch_mm() and switch_to(). I and Ingo have written patches that fix
these problems, and we are waiting for Linus' reply.

I've posted my patch and a longer description to linux-kernel last
Friday "[PATCH] new tlb flush code".

--
	Manfred
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux.eu.org/Linux-MM/