Re: [2.6.36-rc regression] occasional complete system hangs onsparc64 SMP

From: Mikael Pettersson
Date: Sat Sep 25 2010 - 13:34:59 EST


David Miller writes:
> From: Mikael Pettersson <mikpe@xxxxxxxx>
> Date: Thu, 23 Sep 2010 19:02:22 +0200
>
> > The 2.6.36-rc kernels do appear to be solid on a UP Ultra5, but that
> > one no longer does any gcc builds or tests, only kernel builds.
> >
> > Any ideas, or do I have to try to bisect this?
>
> I've seen this too, it's some kind of deadlock obviously.
>
> Unfortunately I haven't gotten any further than you have in the
> analysis.

Update: I got another hang with 2.6.36-rc5, then went back to
2.6.36-rc1 which hung twice. SYSRQ would print help text and
the name of the command but not print anything useful on the
console. Now trying some of the 2.6.35-git snapshots before -rc1.
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