From: Andrew Morton <akpm@linux-foundation.org>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Martin Michlmayr <tbm@cyrius.com>,
elendil@planet.nl, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [2.6.28] Kernel panic after closing lid on HP 2510p
Date: Wed, 14 Jan 2009 18:15:42 -0800 [thread overview]
Message-ID: <20090114181542.34614acf.akpm@linux-foundation.org> (raw)
In-Reply-To: <20090115020311.GA18740@srcf.ucam.org>
On Thu, 15 Jan 2009 02:03:11 +0000 Matthew Garrett <mjg59@srcf.ucam.org> wrote:
> On Wed, Jan 14, 2009 at 04:26:03PM -0800, Andrew Morton wrote:
>
> > It'd be a very special BIOS bug if it can reach out and make the kernel
> > oops.
>
> Lid actions typically trigger SMI code, so it's entirely capable of
> destroying CPU state in such a way that the kernel falls over (and
> probably even in ways that cause the kernel to turn green, emit pleasing
> warbling noises or invade neighbouring pieces of hardware). In this case
> it seems to be SMP specific - the system's entirely stable in UP mode.
> It's greatly vexing.
Does it always crash in the same way?
If so, we can put crash-avoidance code at the offending callsite and
back out gracefully?
next prev parent reply other threads:[~2009-01-15 2:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200901121356.46236.elendil@planet.nl>
[not found] ` <20090113123056.GA2464@deprecation.cyrius.com>
2009-01-15 0:26 ` [2.6.28] Kernel panic after closing lid on HP 2510p Andrew Morton
2009-01-15 2:03 ` Matthew Garrett
2009-01-15 2:15 ` Andrew Morton [this message]
2009-01-15 2:21 ` Matthew Garrett
2009-01-15 2:55 ` Zhang Rui
2009-01-15 2:59 ` Matthew Garrett
2009-01-15 4:20 ` Wu Fengguang
2009-01-15 7:41 ` Martin Michlmayr
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