From: Borislav Petkov <bp@alien8.de>
To: "Alexander E. Patrakov" <patrakov@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: linux-3.7.1: disable and reenable NMI watchdog => panic
Date: Fri, 11 Jan 2013 14:34:22 +0100 [thread overview]
Message-ID: <20130111133422.GA21882@liondog.tnic> (raw)
In-Reply-To: <CAN_LGv1L3RLrwnzdN7oYM8ewjRoptGuK-4wQ9+oXWd+NK9CgNw@mail.gmail.com>
On Sun, Jan 06, 2013 at 11:53:41PM +0600, Alexander E. Patrakov wrote:
> As illustrated by the screen photo [1] (sorry for bad quality),
> disabling and then reenabling the NMI watchdog panics the kernel
> (3.7.1). This is reproducible in qemu-kvm as well, but I could not get
> the nice panic message to pop up there (most of the time, the real
> machine just locks up, too). This bug is rather important, as
> laptop-mode-tools, by default, try to reenable this NMI watchdog when
> AC power appears, and this is how I caught the bug the first time.
>
> [1] http://postimage.org/image/mjjifj1ip/
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=3935e89505a1c3ab3f3b0c7ef0eae54124f48905
should fix it.
See also thread here: http://marc.info/?i=20130109120732.GA8016@liondog.tnic
HTH.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
prev parent reply other threads:[~2013-01-11 13:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-06 17:44 Alexander E. Patrakov
2013-01-06 17:53 ` Alexander E. Patrakov
2013-01-11 13:34 ` Borislav Petkov [this message]
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