Messages in this thread | | | Subject | Re: 2.6.38-rc3 regression on parisc: segfaults | Date | Fri, 4 Feb 2011 11:17:06 -0500 (EST) | From | "John David Anglin" <> |
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> > 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.
I was actually thinking of the fork/clone race for which there are various testcases on the wiki. The aptitude segv is with a SMP kernel, so I don't think this is the UP LWS_CAS issue. However, I agree you should push the change.
Dave -- J. David Anglin dave.anglin@nrc-cnrc.gc.ca National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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