linux-kernel - Re: linux-next: Tree for Apr 18 [ call-trace: drm | x86 | smp

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Message-ID: <CA+icZUVuU9Cbx+d=uyDk=csH01re56NsvBo-wHjjLg1gOt5uzw@mail.gmail.com>
Date:	Sat, 20 Apr 2013 00:34:57 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Davidlohr Bueso <davidlohr.bueso@...com>,
	Rik van Riel <riel@...riel.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next <linux-next@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Paul McKenney <paul.mckenney@...aro.org>,
	DRI <dri-devel@...ts.freedesktop.org>,
	Dave Airlie <airlied@...hat.com>,
	Emmanuel Benisty <benisty.e@...il.com>
Subject: Re: linux-next: Tree for Apr 18 [ call-trace: drm | x86 | smp | rcu
 related? ]

On Sat, Apr 20, 2013 at 12:12 AM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> On Fri, Apr 19, 2013 at 11:24 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>> On Fri, Apr 19, 2013 at 2:09 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
>>>
>>> I have applied all three patches and see still call-traces.
>>> New are apparmor related messages.
>>
>> Can you try the crazy rcu double-free debug hack?
>>
>> See
>>
>>     https://lkml.org/lkml/2013/3/30/113
>>
>> and I'm re-attaching the ugly-ass crazy hack patch here too..
>>
>>                     Linus
>
> Attached the dmesg with some call-traces inside.
>
> I am building a -9 kernel with Paul's kconfig recommendations...
>
> CONFIG_DEBUG_OBJECTS=y
> CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
> CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
>
> ...and will report.
>

See attached dmesg.
AFAICS no more debug-infos.

# CONFIG_DEBUG_SPINLOCK is not set <--- Enable?

- Sedat -

> - Sedat -

View attachment "dmesg_3.9.0-rc7-next20130419-9-iniza-small_RCU-DOUBLE-FREE-HACK_CONFIG_DEBUG_OBJECTS_RCU_HEAD-y.txt" of type "text/plain" (68236 bytes)