linux-kernel - Re: [PATCH] trace: don't call page_to

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Message-ID: <20120920062832.GG13234@bbox>
Date:	Thu, 20 Sep 2012 15:28:32 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Wen Congyang <wency@...fujitsu.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	khlebnikov@...nvz.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] trace: don't call page_to_pfn() if page is NULL

On Thu, Sep 20, 2012 at 02:04:47PM +0800, Wen Congyang wrote:
> When allocating memory fails, page is NULL. page_to_pfn() will
> cause the kernel panicked if we don't use sparsemem vmemmap.
> 
> Signed-off-by: Wen Congyang <wency@...fujitsu.com>

Nice catch.
I think it's a candidate of stable.

Reviewed-by: Minchan Kim <minchan@...nel.org>

-- 
Kind regards,
Minchan Kim
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