linux-kernel - Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130203205857.GD5844@pd.tnic>
Date:	Sun, 3 Feb 2013 21:58:57 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Jiri Slaby <jslaby@...e.cz>, Bjorn Helgaas <bhelgaas@...gle.com>,
	x86@...nel.org, lkml <linux-kernel@...r.kernel.org>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Subject: Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.

On Sun, Feb 03, 2013 at 09:15:12PM +0100, Rafael J. Wysocki wrote:
> Is suspend-to-RAM triggering that as too?

Nope, not really. But, just to confirm: s2r is

echo "shutdown" > /sys/power/disk
echo "mem" > /sys/power/state

right?

Btw, this bug is very strange. So I did a couple more s2disk runs, i.e.

echo "shutdown" > /sys/power/disk
echo "disk" > /sys/power/state

and it seemed to me that when the eth cable is plugged in, it would
suspend and resume fine. When I then boot, unplug the cable, set all
tunables to "Good", suspend to disk and resume, no NMI message. When I
plug the cable back, only *then* the message triggered.

I need to play with this a bit more to get a better sense of when
exactly it happens.

Thanks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/