linux-kernel - Re: [PATCH V6] ARM : unwinder : Prevent data abort due to stack overflow

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Date:	Tue, 10 Dec 2013 03:54:44 +0000 (GMT)
From:	Anurag Aggarwal <a.anurag@...sung.com>
To:	Dave Martin <Dave.Martin@....com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Naveen Kumar <naveen.sel@...sung.com>,
	Narendra Meher <narendra.m1@...sung.com>,
	"nico@...aro.org" <nico@...aro.org>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"will.deacon@....com" <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ashish Kalra <ashish.kalra@...sung.com>,
	"cpgs ." <cpgs@...sung.com>,
	"anurag19aggarwal@...il.com" <anurag19aggarwal@...il.com>,
	"naveenkrishna.ch@...il.com" <naveenkrishna.ch@...il.com>,
	Rajat Suri <rajat.suri@...sung.com>,
	Poorva Srivastava <poorva.s@...sung.com>,
	Mohammad Irfan Ansari <mohammad.a2@...sung.com>
Subject: Re: [PATCH V6] ARM : unwinder : Prevent data abort due to stack
 overflow

>Reviewed-by: Dave Martin <Dave.Martin@....com>
>
>I can confirm that the kernel "doesn't crash" with this applied, and
>that backtracing at least partially works.  But this is not really
>sufficient to demontrate that the now code works better than the old
>code in corner cases (which is the point of the patch).
>
>Can you give details of what additional testing you have, or plan to
>do?

We saw a data abort in unwinder for one of Samsung Project, during a
Samsung Automation test case. 
After that I created the initial the patch, and the data abort has not been
seen till now.

Is it possible for you to give an idea on what other kind of additional testing 
do you have in mind.

Regads
Anurag