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SubjectRe: soft lockup detected
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Date
"Peter Zijlstra" <peterz@infradead.org> writes:

> On Thu, 2007-08-16 at 09:54 +0100, Gregory Stark wrote:
>
>> This is on 2.6.21-1.3194.fc7. I've been trying different kernels but this is
>> the first point where I've narrowed down the symptoms to something
>> reproducible.
>
> That is a very old kernel, and a vendor kernel at that.

I'm sorry? The original kernel to exhibit the problem was 2.6.5 -- *that* was
a very old kernel and I insisted we upgrade before trying to report any
problems. However 2.6.21 is only one version out of date and it's about 3
months old. None of the changelog entries since then have mentioned any semop
or ipc related changes (aside from a hugetlb change but we're not using
hugetlb). It's more recent than most distributions have as their current
release.

I do share your feelings about vendor kernels. We've seen these problems with
SUSE 2.6.5 and 2.6.16 kernels though. This was the most recently released
kernel we've tried.

> Did any of the different kernels you tried include a recent upstream
> one?

Still working on it.

--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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