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[PATCH] kvm: fix vcpu freeing bug
authorIngo Molnar <mingo@elte.hu>
Mon, 12 Feb 2007 08:54:42 +0000 (00:54 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Mon, 12 Feb 2007 17:48:40 +0000 (09:48 -0800)
commit1e8ba6fba5050ec11bba90c8622aa2ed95ff711f
tree4dfc7c1c8a6119648978f25c1065b344123638cbtree | snapshot (tar.gz zip)
parent8cd133073f9b5cd335c0b2e4740aceb025d50ca9commit | diff
[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>
drivers/kvm/kvm_main.c diff | blob | blame | history
Motorola kernel-slsi