From: Christoph Hellwig <hch@lst.de>
Date: Wed, 19 Sep 2007 04:38:12 +0000 (+1000)
Subject: [POWERPC] spusched: Fix null pointer dereference in find_victim
X-Git-Tag: v2.6.23-rc7~8^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0e7b4aa1c09ea992808ea8c079141bc8dd0f5bc;p=pandora-kernel.git

[POWERPC] spusched: Fix null pointer dereference in find_victim

find_victim can dereference a NULL pointer when iterating over the list
of victim spus because list_mutex only guarantees spu->ct to be stable,
but of course not to be non-NULL.

Also fix find_victim to not call spu_unbind_context without list_mutex
because that violates the above guarantee.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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