Date: Tue, 19 Aug 2008 13:53:18 +0200
From: Robert Richter <robert.richter@amd.com>
To: Arnd Bergmann <arnd@arndb.de>
CC: linuxppc-dev@ozlabs.org, cbe-oss-dev@ozlabs.org,
       linux-kernel <linux-kernel@vger.kernel.org>,
       oprofile-list@lists.sourceforge.net, Paul Mackerras <paulus@samba.org>,
       cel <cel@linux.vnet.ibm.com>
Subject: Re: powerpc/cell/oprofile: avoid double free of profile buffer
Message-ID: <20080819115317.GD1488@erda.amd.com>
References: <1217620879.15667.145.camel@carll-linux-desktop> <18591.30474.127939.243247@cargo.ozlabs.ibm.com> <200808110918.57293.arnd@arndb.de> <200808110925.44243.arnd@arndb.de>
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On 11.08.08 09:25:43, Arnd Bergmann wrote:
> From: Carl Love <cel@us.ibm.com>
> 
> If an error occurs on opcontrol start, the event and per cpu buffers
> are released.  If later opcontrol shutdown is called then the free
> function will be called again to free buffers that no longer
> exist.  This results in a kernel oops.  The following changes
> prevent the call to delete buffers that don't exist.
> 
> Signed-off-by: Carl Love <carll@us.ibm.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Robert Richter <robert.richter@amd.com>

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@amd.com

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