Commit 89cd6254b8 for qemu.org

commit 89cd6254b80784a1b3f574407192493ef92fe65f
Author: Dmitry Frolov <frolov@swemel.ru>
Date:   Tue Sep 17 11:03:18 2024 +0300

    hw/block: fix uint32 overflow

    The product bs->bl.zone_size * (bs->bl.nr_zones - 1) may overflow
    uint32.

    Found by Linux Verification Center (linuxtesting.org) with SVACE.

    Signed-off-by: Dmitry Frolov <frolov@swemel.ru>
    Message-id: 20240917080356.270576-2-frolov@swemel.ru
    Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 73bdfd6122..115795392c 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -700,7 +700,7 @@ static int virtio_blk_handle_zone_mgmt(VirtIOBlockReq *req, BlockZoneOp op)
     } else {
         if (bs->bl.zone_size > capacity - offset) {
             /* The zoned device allows the last smaller zone. */
-            len = capacity - bs->bl.zone_size * (bs->bl.nr_zones - 1);
+            len = capacity - bs->bl.zone_size * (bs->bl.nr_zones - 1ull);
         } else {
             len = bs->bl.zone_size;
         }