From: Max Reitz <mreitz@redhat.com>

Date: Mon, 28 Oct 2019 17:18:40 +0100

Subject: [PATCH] qcow2: Fix QCOW2_COMPRESSED_SECTOR_MASK

Masks for L2 table entries should have 64 bit.

Fixes: b6c246942b14d3e0dec46a6c5868ed84e7dbea19

Buglink: https://bugs.launchpad.net/qemu/+bug/1850000

Cc: qemu-stable@nongnu.org

Signed-off-by: Max Reitz <mreitz@redhat.com>

---

 block/qcow2.h | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/qcow2.h b/block/qcow2.h

index 567375e56c..45f9585c08 100644

--- a/block/qcow2.h

+++ b/block/qcow2.h

@@ -77,7 +77,7 @@

 /* Defined in the qcow2 spec (compressed cluster descriptor) */

 #define QCOW2_COMPRESSED_SECTOR_SIZE 512U

-#define QCOW2_COMPRESSED_SECTOR_MASK (~(QCOW2_COMPRESSED_SECTOR_SIZE - 1))

+#define QCOW2_COMPRESSED_SECTOR_MASK (~(QCOW2_COMPRESSED_SECTOR_SIZE - 1ULL))

 /* Must be at least 2 to cover COW */

 #define MIN_L2_CACHE_SIZE 2 /* cache entries */