From mboxrd@z Thu Jan  1 00:00:00 1970
From: stano@meduna.org (Stanislav Meduna)
Date: Fri, 18 Apr 2014 00:55:19 +0200
Subject: BUG: spinlock trylock failure on UP - reverting timer patches
 helps
In-Reply-To: <53500184.4050309@meduna.org>
References: <534C3606.7010206@meduna.org> <534C731F.1050406@meduna.org>
 <534DADF1.6060608@meduna.org> <53500184.4050309@meduna.org>
Message-ID: <53505BD7.9050004@meduna.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 17.04.2014 18:29, Stanislav Meduna wrote:

> Note: the bug goes away reverting the very same patches that are
> helping the Jordan's problms. I did follow
> 
> http://www.spinics.net/lists/linux-rt-users/msg11639.html
> 
> and no BUG while booting anymore. I'll try to let it run some
> more time.

Erm.. nope

# (cat /proc/meminfo ; cat /proc/meminfo) |  grep KernelStack
KernelStack:        5920 kB
KernelStack:        5928 kB

# (cat /proc/meminfo ; cat /proc/meminfo) |  grep KernelStack
KernelStack:        5952 kB
KernelStack:        5960 kB

maybe interrupt nesting ad nauseum? How does one debug
such issues?

It is possible that my previous posting was also caused by this -
disregard, I'll post again if the problem persists.

Jordan, could you check whether your kernel stack remains
stable with only the 3 patches reverted?

Thanks
-- 
                                     Stano