vmdk: Widen before shifting 32 bit header field
Coverity spotted this.
The field is 32 bits, but if it's possible to overflow in 32 bit
left shift.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/block/vmdk.c b/block/vmdk.c
index fd94b8f..1c5e2ef 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -523,7 +523,7 @@
}
ret = vmdk_add_extent(bs, file, false,
le32_to_cpu(header.disk_sectors),
- le32_to_cpu(header.l1dir_offset) << 9,
+ (int64_t)le32_to_cpu(header.l1dir_offset) << 9,
0,
le32_to_cpu(header.l1dir_size),
4096,
