Re: WARNING: CPU: 2 PID: 1857 at arch/x86/kernel/smp.c:124

From: Peter Zijlstra
Date: Wed Apr 16 2014 - 05:59:14 EST


On Wed, Apr 16, 2014 at 11:28:40AM +0200, Richard Weinberger wrote:
> Am 16.04.2014 11:21, schrieb Peter Zijlstra:
> > On Wed, Apr 16, 2014 at 11:13:44AM +0200, Richard Weinberger wrote:
> >> Hi!
> >>
> >> On a new 8 core server I'm facing the following issue.
> >> After an oops a warning triggers.
> >
> > I think its fair to ignore everything _after_ an OOPS ;-)
>
> The problem here is that I'm using pstore with the erst backend (ACPI APEI).
> But it can only store a few KiB. So upon every oops it captures only the bogus
> warning and the original one is lost.

Then teach it to stop recording after the first WARN/OOPS.

You can generates megabytes of crap after an oops, that's a feature
afaik, think of dump_ftrace_on_oops and the like.
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