From: Bjorn Helgaas <bhelgaas@google.com>
To: Borislav Petkov <bp@alien8.de>,
Bjorn Helgaas <bhelgaas@google.com>,
x86@kernel.org, lkml <linux-kernel@vger.kernel.org>,
Konstantin Khlebnikov <khlebnikov@openvz.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.
Date: Wed, 30 Jan 2013 10:27:42 -0700 [thread overview]
Message-ID: <CAErSpo47BvEsDC1o_kYDeyd6j3VUoWHwSMYPyLpZYB1H-sL=7A@mail.gmail.com> (raw)
In-Reply-To: <20130130034204.GB30965@pd.tnic>
On Tue, Jan 29, 2013 at 8:42 PM, Borislav Petkov <bp@alien8.de> wrote:
> On Tue, Jan 29, 2013 at 02:32:56PM -0700, Bjorn Helgaas wrote:
>> Konstantin has some fixes for an e1000e power management issue related
>> to suspend/resume that he observed on an x220. He didn't see an NMI,
>> and apparently his problem has been around for a long time,
>
> Yeah, this is one of those issues you don't see *every* s/r cycle and
> besides, I just got this box and haven't run 3.{6,7} on it yet (maybe
> never will :-)).
>
>> so no idea whether it could be related. I just noticed the conjunction
>> of thinkpad/e1000e/resume/power saving in both reports.
>>
>> https://lkml.org/lkml/2013/1/18/147
>
> Yes, thanks Bjorn, that was a good suggestion. Btw, from reading the
> thread, those patches still need cooking a bit more, AFAICR people's
> objections/comments. Or should I go ahead and test them?
You're right, I don't think we're quite ready to merge those patches.
But if your NMI is easy to reproduce, it might be worth removing
e1000e altogether to see if it still happens. I noticed in your
original log that the NMI occurred 5 seconds after the e1000e message,
and I could imagine some CPU or PCI response timeout being 5 seconds.
> It's just that I'm overly cautious every time I hear e1000e is involved:
>
> www.linux-magazine.com/content/download/62169/484085/file/Security_Lessons_Ftrace.pdf
Thanks for the pointer, that was an interesting read :)
Bjorn
next prev parent reply other threads:[~2013-01-30 17:28 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 20:28 Uhhuh. NMI received for unknown reason 2c on CPU 0 Borislav Petkov
2013-01-29 21:32 ` Bjorn Helgaas
2013-01-30 3:42 ` Borislav Petkov
2013-01-30 17:27 ` Bjorn Helgaas [this message]
2013-01-30 17:44 ` Borislav Petkov
2013-01-30 19:43 ` Jiri Slaby
2013-01-30 20:00 ` Borislav Petkov
2013-01-30 20:33 ` Jiri Slaby
2013-01-30 21:39 ` Rafael J. Wysocki
2013-01-30 22:17 ` Jiri Slaby
2013-01-30 22:45 ` Rafael J. Wysocki
2013-01-30 23:12 ` Jiri Slaby
2013-01-30 23:47 ` Jiri Slaby
2013-01-31 0:54 ` Rafael J. Wysocki
2013-01-31 7:09 ` Borislav Petkov
2013-01-31 8:14 ` Jiri Slaby
2013-01-31 13:12 ` Rafael J. Wysocki
2013-01-31 13:10 ` Borislav Petkov
2013-02-02 23:04 ` Rafael J. Wysocki
2013-02-03 14:46 ` Borislav Petkov
2013-02-03 20:15 ` Rafael J. Wysocki
2013-02-03 20:58 ` Borislav Petkov
2013-02-03 21:06 ` Borislav Petkov
2013-02-03 21:15 ` Borislav Petkov
2013-02-14 14:39 ` Borislav Petkov
2013-02-14 17:17 ` Bjorn Helgaas
2013-02-14 19:12 ` Borislav Petkov
2013-02-15 8:54 ` Konstantin Khlebnikov
2013-02-15 9:16 ` Borislav Petkov
2013-03-04 21:50 ` Borislav Petkov
2013-03-05 0:16 ` Bjorn Helgaas
2013-03-05 9:42 ` Jiri Slaby
2013-03-05 9:58 ` Borislav Petkov
2013-03-05 10:01 ` Jiri Slaby
2013-03-05 10:02 ` Jeff Kirsher
2013-03-05 10:14 ` Borislav Petkov
2013-03-05 10:29 ` Jeff Kirsher
2013-03-05 11:27 ` Borislav Petkov
2013-03-05 11:33 ` Jeff Kirsher
2013-03-05 11:42 ` Borislav Petkov
2013-03-06 0:13 ` Rafael J. Wysocki
2013-03-06 0:19 ` Borislav Petkov
2013-03-08 16:47 ` Borislav Petkov
2013-03-05 10:01 ` Jeff Kirsher
2013-03-05 10:04 ` Jiri Slaby
2013-03-01 12:51 ` e1000e broken after resume on x230 [was: Uhhuh. NMI received for unknown reason 2c on CPU 0.] Jiri Slaby
2013-02-06 13:54 ` Uhhuh. NMI received for unknown reason 2c on CPU 0 Jiri Slaby
2013-02-06 21:29 ` Rafael J. Wysocki
2013-01-31 8:28 ` Jiri Slaby
2013-01-31 13:18 ` Borislav Petkov
2013-01-31 13:24 ` Borislav Petkov
2013-03-01 12:55 ` Jiri Slaby
2013-04-04 7:32 ` Jiri Slaby
2013-04-04 9:33 ` Borislav Petkov
2013-04-04 9:38 ` Jiri Slaby
2013-04-04 9:58 ` Borislav Petkov
2013-01-31 13:29 ` Rafael J. Wysocki
2013-02-03 21:29 ` Jiri Slaby
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