sysfs crashes while recursively checking file permissions

On Fri, Nov 02, 2012 at 01:20:12PM +0530, Chintan Pandya wrote:

Hi,

I am running one test on my ARM system which checks the sysfs file
system's whole directory recursively and checks its file permission.
While I perform this test, I face random (as in varies the nature of
crash sometimes) crashes like one mentioned below.


<1>[   67.442660] Unable to handle kernel paging request at virtual
address efd3d794

<1>[   67.448840] pgd = da364000

<1>[   67.451529] [efd3d794] *pgd=00000000

<0>[   67.455092] Internal error: Oops: 5 [#1] PREEMPT SMP ARM

<4>[   67.460385] Modules linked in:

<4>[   67.463424] CPU: 1    Not tainted
(3.4.0-perf-g45c04fe-00006-g8a5c5e2 #27)

Can you try a newer kernel version?  Like 3.7-rc5?  3.6.6?

thanks,

greg k-h