From: Greg KH <gregkh@suse.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Tony Luck <tony.luck@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
"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, 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: Mon, 16 Jan 2012 10:15:36 -0800 [thread overview]
Message-ID: <20120116181536.GB23628@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1201142233400.14635-100000@netrider.rowland.org>
On Sat, Jan 14, 2012 at 10:36:53PM -0500, Alan Stern wrote:
> On Sat, 14 Jan 2012, Greg KH wrote:
>
> > On Sat, Jan 14, 2012 at 06:05:24PM -0800, Tony Luck wrote:
> > > On Sat, Jan 14, 2012 at 8:30 AM, Alan Stern <stern@rowland.harvard.edu> wrote:
> > > > The driver core isn't designed to handle device structures that get
> > > > unregistered and then spring back to life; callers are supposed to
> > > > allocate a fresh new structure instead.
> > >
> > > Does every caller use "kzalloc()" for this fresh new structure (or even
> > > for the original registration) rather than "kmalloc()"?
> >
> > They better, as that's what they are required to do :)
> >
> > The kernel would be crashing with slab debugging enabled, if it wasn't
> > so today.
>
> These are both important restrictions on the use of the driver core,
> and they don't seem to be explained anywhere in the kernel source.
> Would you like to receive a documentation patch?
For some reason I thought it was documented somewhere, but I can't seem
to find that right now. So yes, a patch documenting it would be great
to have.
thanks,
greg k-h
next prev parent reply other threads:[~2012-01-16 18:20 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
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 [this message]
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
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