From: Minchan Kim <minchan@kernel.org>
To: Wen Congyang <wency@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
khlebnikov@openvz.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] trace: don't call page_to_pfn() if page is NULL
Date: Thu, 20 Sep 2012 15:28:32 +0900 [thread overview]
Message-ID: <20120920062832.GG13234@bbox> (raw)
In-Reply-To: <505AB1FF.8020104@cn.fujitsu.com>
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@cn.fujitsu.com>
Nice catch.
I think it's a candidate of stable.
Reviewed-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
next prev parent reply other threads:[~2012-09-20 6:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-20 6:04 [PATCH] trace: don't call page_to_pfn() if page is NULL Wen Congyang
2012-09-20 6:28 ` Minchan Kim [this message]
2012-09-20 13:41 ` Steven Rostedt
2012-09-20 13:48 ` Steven Rostedt
2012-09-20 14:24 ` Mel Gorman
2012-09-21 12:37 ` [tip:perf/urgent] tracing: Don't " tip-bot for Wen Congyang
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