From: Max Reitz <mre...@redhat.com>
In qcow2_alloc_cluster_offset(), *num is limited to
INT_MAX >> BDRV_SECTOR_BITS by all callers. However, since remaining is
of type uint64_t, we might as well cast *num to that type before
performing the shift.
Cc: qemu-sta...@nongnu.org
Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Kevin Wolf <kw...@redhat.com>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
(cherry picked from commit 11c89769dc3e638ef72915d97058411ddf79b64b)
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
block/qcow2-cluster.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 26827a2..769e68d 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -1202,7 +1202,7 @@ int qcow2_alloc_cluster_offset(BlockDriverState *bs,
uint64_t offset,
again:
start = offset;
- remaining = *num << BDRV_SECTOR_BITS;
+ remaining = (uint64_t)*num << BDRV_SECTOR_BITS;
cluster_offset = 0;
*host_offset = 0;
cur_bytes = 0;
--
1.9.1
