From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Sat, 11 Jun 2011 12:30:32 +0000 (+0100)
Subject: drm/nouveau/pm: Prevent overflow in nouveau_perf_init()
X-Git-Tag: v3.0-rc4~2^2~2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2905544073f6ec235b44f624c66f52b61221a16c;p=pandora-kernel.git

drm/nouveau/pm: Prevent overflow in nouveau_perf_init()

While parsing the perf table, there is no check if
the num of entries read from the vbios is less than
the currently allocated number.

In case of a buggy vbios this will cause overwriting
of kernel memory, causing aditional problems.

Add a simple check in order to prevent the case

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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