From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 12 Feb 2007 08:54:42 +0000 (-0800)
Subject: [PATCH] kvm: fix vcpu freeing bug
X-Git-Tag: v2.6.21-rc1~274^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e8ba6fba5050ec11bba90c8622aa2ed95ff711f;p=pandora-kernel.git

[PATCH] kvm: fix vcpu freeing bug

vcpu_load() can return NULL and it sometimes does in failure paths (for
example when the userspace ABI version is too old) - causing a preemption
count underflow in the ->vcpu_free() later on.  So check for NULL.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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