From: Ingo Molnar <mingo@kernel.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
xen-devel@lists.xenproject.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Date: Tue, 8 Oct 2013 10:26:24 +0200 [thread overview]
Message-ID: <20131008082624.GC7232@gmail.com> (raw)
In-Reply-To: <20131008082057.GA19657@localhost>
* Fengguang Wu <fengguang.wu@intel.com> wrote:
> After enabling CONFIG_DEBUG_OBJECTS_TIMERS=y, it will issue a WARNING followed by a "BUG: ..."
Cool!
> [ 2.802167] parport_pc 00:04: reported by Plug and Play ACPI
> [ 2.803818] parport0: PC-style at 0x378, irq 7 [PCSPP(,...)]
> [ 2.806035] kobject: 'parport_pc.956' (ffff880006dc3820): kobject_release, parent (null) (delayed)
> [ 2.808626] ------------[ cut here ]------------
> [ 2.809776] WARNING: CPU: 1 PID: 1 at /c/wfg/linux/lib/debugobjects.c:260 debug_print_object+0x7c/0x8d()
> [ 2.812433] ODEBUG: init active (active state 0) object type: timer_list hint: (null)
> ......
> [ 3.796079] BUG: unable to handle kernel NULL pointer dereference at (null)
Mind posting the full backtrace? It should show the actual callsite that
zaps the timer. I don't think we got that dump so far, I've only seen
timer list corruption backtraces. (but I haven't read the whole thread.)
Thanks,
Ingo
next prev parent reply other threads:[~2013-10-08 8:26 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-06 8:23 [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Fengguang Wu
2013-10-06 17:26 ` Linus Torvalds
2013-10-07 2:11 ` Fengguang Wu
2013-10-07 5:10 ` Fengguang Wu
2013-10-07 8:12 ` Linus Torvalds
[not found] ` <20131007083505.GA22585@localhost>
2013-10-07 22:14 ` Linus Torvalds
2013-10-07 22:29 ` Russell King - ARM Linux
2013-10-07 23:33 ` Russell King - ARM Linux
2013-10-07 23:47 ` Linus Torvalds
2013-10-08 2:09 ` Fengguang Wu
2013-10-08 2:14 ` Fengguang Wu
2013-10-08 2:36 ` Fengguang Wu
2013-10-08 3:07 ` Linus Torvalds
2013-10-08 2:51 ` Linus Torvalds
2013-10-08 3:11 ` Fengguang Wu
2013-10-08 3:29 ` Linus Torvalds
2013-10-08 3:35 ` Fengguang Wu
2013-10-08 4:35 ` [DRM_CURRUS_QEMU/timer] WARNING: CPU: 0 PID: 1 at debug_print_object() Fengguang Wu
2013-10-08 12:17 ` [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Fengguang Wu
2013-10-08 22:14 ` Russell King - ARM Linux
2013-10-08 22:48 ` Greg Kroah-Hartman
2013-10-09 0:45 ` Linus Torvalds
2013-10-09 1:18 ` Dave Jones
2013-10-09 1:26 ` [PATCH] kobject: show debug info on delayed kobject release Fengguang Wu
2013-10-09 14:47 ` Russell King - ARM Linux
2013-10-09 14:12 ` [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Josh Boyer
2013-10-09 0:46 ` Fengguang Wu
2013-10-08 8:06 ` Russell King - ARM Linux
2013-10-10 2:23 ` Dave Airlie
2013-10-10 2:38 ` Linus Torvalds
2013-10-10 9:19 ` Russell King - ARM Linux
2013-10-10 10:53 ` Russell King - ARM Linux
2013-10-11 3:55 ` Dave Airlie
2013-10-11 4:28 ` Dave Airlie
2013-10-11 5:14 ` Fengguang Wu
2013-10-23 11:20 ` Xiong Zhou
2013-10-08 2:43 ` Linus Torvalds
2013-10-08 7:58 ` Ingo Molnar
2013-10-08 8:20 ` Fengguang Wu
2013-10-08 8:26 ` Ingo Molnar [this message]
2013-10-08 9:34 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2013-10-06 22:14 Boris Ostrovsky
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