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authorAvi Kivity <avi@qumranet.com>2006-12-29 16:49:58 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-30 10:56:44 -0800
commit55a54f79e091d52c3c2835985c347ea4d2e1c21f (patch)
treead47898c216852e053806ee0fd6518380f23c9ab /drivers
parentc68876fd2846d2aaf9770276db244b46f2bf52c7 (diff)
[PATCH] KVM: Fix oops on oom
__free_page() doesn't like a NULL argument, so check before calling it. A NULL can only happen if memory is exhausted during allocation of a memory slot. Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/kvm/kvm_main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 0e618bcfe1d..973544553cb 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -245,7 +245,8 @@ static void kvm_free_physmem_slot(struct kvm_memory_slot *free,
if (!dont || free->phys_mem != dont->phys_mem)
if (free->phys_mem) {
for (i = 0; i < free->npages; ++i)
- __free_page(free->phys_mem[i]);
+ if (free->phys_mem[i])
+ __free_page(free->phys_mem[i]);
vfree(free->phys_mem);
}