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kvm tools: balloon: fix overflow in PFN to address conversion

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Fix trivial overflow of u32 value

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Konstantin Khlebnikov
2014-08-20 18:37:34 +04:00
committed by Will Deacon
parent 474b696f40
commit c818344265
1 changed files with 1 additions and 1 deletions
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virtio/balloon.c
+1 -1
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@@ -64,7 +64,7 @@ static bool virtio_bln_do_io_request(struct kvm *kvm, struct bln_dev *bdev, stru
for (i = 0 ; i < len ; i++) {
void *guest_ptr;
guest_ptr = guest_flat_to_host(kvm, ptrs[i] << VIRTIO_BALLOON_PFN_SHIFT);
guest_ptr = guest_flat_to_host(kvm, (u64)ptrs[i] << VIRTIO_BALLOON_PFN_SHIFT);
if (queue == &bdev->vqs[VIRTIO_BLN_INFLATE]) {
madvise(guest_ptr, 1 << VIRTIO_BALLOON_PFN_SHIFT, MADV_DONTNEED);
bdev->config.actual++;