Messages in this thread |  | | | Date | Fri, 4 Feb 2011 10:20:05 -0500 | | Subject | Re: 2.6.38-rc3 regression on parisc: segfaults | | From | "Carlos O'Donell" <> |
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On Fri, Feb 4, 2011 at 10:07 AM, John David Anglin <dave@hiauly1.hia.nrc.ca> wrote: > On Fri, 04 Feb 2011, Meelis Roos wrote: > >> 2363 clone( <unfinished ...> >> 2349 <... futex resumed> ) = 1 >> 2363 <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x460df4a8) = 2372 >> 2349 --- SIGSEGV (Segmentation fault) @ 0 (0) --- >> 2372 rt_sigaction(SIGPIPE, {SIG_DFL, [], SA_RESTART}, <unfinished ...> >> 2349 write(1, "\33[56;1H\33[34h\33[?25h", 18 <unfinished ...> >> >> Something futex-related. Full log temprarilty available at >> http://www.cs.ut.ee/~mroos/aptitude-strace.txt > > This is possibly the infamous COW bug.
The COW bug that is triggered by a COW from an LWS-CAS? The solution to which is to use locks around the LWS-CAS even on UP? I'd forgotten about this issue actually, I should push that patch out to James.
Cheers, Carlos. -- 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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