From: Tony Luck <tony.luck@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
Ming Lei <tom.leiming@gmail.com>,
Djalal Harouni <tixxdz@opendz.org>,
Borislav Petkov <borislav.petkov@amd.com>,
Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@linux.intel.com>,
linux-kernel@vger.kernel.org, Greg Kroah-Hartman <gregkh@suse.de>,
Kay Sievers <kay.sievers@vrfy.org>,
gouders@et.bocholt.fh-gelsenkirchen.de,
Marcos Souza <marcos.mage@gmail.com>,
Linux PM mailing list <linux-pm@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
"tglx@linutronix.de" <tglx@linutronix.de>,
prasad@linux.vnet.ibm.com, justinmattock@gmail.com,
Jeff Chua <jeff.chua.linux@gmail.com>,
Suresh B Siddha <suresh.b.siddha@intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mel Gorman <mgorman@suse.de>,
Gilad Ben-Yossef <gilad@benyossef.com>
Subject: Re: x86/mce: machine check warning during poweroff
Date: Fri, 13 Jan 2012 21:15:29 -0800 [thread overview]
Message-ID: <CA+8MBbJ7wvzPtW8g0qd4R74tYs-tujCRCvjhue3gah_prtsLLg@mail.gmail.com> (raw)
In-Reply-To: <CA+55aFwWU8ieuV_EsA6nHwjV9iOgy04DEScngDKQ92wNGfPZ-Q@mail.gmail.com>
On Fri, Jan 13, 2012 at 7:10 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> Fair enough. The many layers of clever indirection are really really
> nasty to follow, I agree.
You could cheat and bisect (not git bisect, numerical bisect). We know that:
memset(&dev->kobj, 0, sizeof(struct kobject));
is not enough. And that:
memset(dev, 0, sizeof(struct device));
works. The kobject is near the beginning of struct device. So try clearing
all the other bits from start of struct device up to "kobj" ... if that doesn't
help, then play with clearing various sized chunks after. Should be able to
zoom in on the culprit field ... then go look at the code.
-Tony
next prev parent reply other threads:[~2012-01-14 5:15 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-11 0:00 x86/mce: machine check warning during poweroff Djalal Harouni
2012-01-12 14:22 ` Ming Lei
2012-01-13 20:22 ` Srivatsa S. Bhat
2012-01-13 20:34 ` Justin P. Mattock
2012-01-13 20:37 ` Linus Torvalds
2012-01-13 20:53 ` Srivatsa S. Bhat
2012-01-13 21:08 ` Linus Torvalds
2012-01-13 21:24 ` Andi Kleen
2012-01-13 21:38 ` Justin P. Mattock
2012-01-13 22:06 ` Srivatsa S. Bhat
2012-01-13 22:17 ` Alan Stern
2012-01-13 22:18 ` Srivatsa S. Bhat
2012-01-13 23:13 ` Andi Kleen
2012-01-14 0:44 ` Dirk Gouders
2012-01-13 23:02 ` Linus Torvalds
2012-01-13 23:27 ` Srivatsa S. Bhat
2012-01-14 0:05 ` Linus Torvalds
2012-01-14 2:41 ` Srivatsa S. Bhat
2012-01-14 2:53 ` Linus Torvalds
2012-01-14 3:05 ` Srivatsa S. Bhat
2012-01-14 3:10 ` Linus Torvalds
2012-01-14 3:18 ` Srivatsa S. Bhat
2012-01-14 3:41 ` Linus Torvalds
2012-01-14 5:15 ` Tony Luck [this message]
2012-01-14 14:49 ` Greg KH
2012-01-14 16:30 ` Alan Stern
2012-01-14 20:45 ` Jeff Chua
2012-01-15 2:05 ` Tony Luck
2012-01-15 2:34 ` Greg KH
2012-01-15 3:36 ` Alan Stern
2012-01-16 18:15 ` Greg KH
2012-01-16 18:11 ` Greg KH
2012-01-16 18:27 ` Luck, Tony
2012-01-16 18:34 ` Greg KH
2012-01-16 18:42 ` Kay Sievers
2012-01-17 2:21 ` Suresh Siddha
2012-01-17 9:52 ` Srivatsa S. Bhat
2012-01-17 16:15 ` Jeff Chua
2012-01-17 16:36 ` Srivatsa S. Bhat
2012-01-18 3:17 ` Suresh Siddha
2012-01-18 10:19 ` Srivatsa S. Bhat
2012-01-18 13:15 ` Srivatsa S. Bhat
2012-01-18 13:32 ` Sergey Senozhatsky
2012-01-18 22:08 ` Suresh Siddha
2012-01-19 7:50 ` Sergey Senozhatsky
2012-01-19 12:02 ` Srivatsa S. Bhat
2012-01-20 2:28 ` Suresh Siddha
2012-01-23 8:43 ` Peter Zijlstra
2012-01-26 20:27 ` [tip:sched/urgent] sched/nohz: Fix nohz cpu idle load balancing state with cpu hotplug tip-bot for Suresh Siddha
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CA+8MBbJ7wvzPtW8g0qd4R74tYs-tujCRCvjhue3gah_prtsLLg@mail.gmail.com \
--to=tony.luck@intel.com \
--cc=a.p.zijlstra@chello.nl \
--cc=ak@linux.intel.com \
--cc=borislav.petkov@amd.com \
--cc=gilad@benyossef.com \
--cc=gouders@et.bocholt.fh-gelsenkirchen.de \
--cc=gregkh@suse.de \
--cc=jeff.chua.linux@gmail.com \
--cc=justinmattock@gmail.com \
--cc=kay.sievers@vrfy.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=marcos.mage@gmail.com \
--cc=mgorman@suse.de \
--cc=mingo@elte.hu \
--cc=prasad@linux.vnet.ibm.com \
--cc=rjw@sisk.pl \
--cc=seto.hidetoshi@jp.fujitsu.com \
--cc=srivatsa.bhat@linux.vnet.ibm.com \
--cc=suresh.b.siddha@intel.com \
--cc=tglx@linutronix.de \
--cc=tixxdz@opendz.org \
--cc=tom.leiming@gmail.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).