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[PULL,31/42] qcow2: fix iovec size at qcow2_co_pwritev_compressed

Message ID 1473099234-10882-32-git-send-email-kwolf@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kevin Wolf Sept. 5, 2016, 6:13 p.m. UTC 
From: Pavel Butsykin <pbutsykin@virtuozzo.com>

Use bytes as the size would be more exact than s->cluster_size.  Although
qemu_iovec_to_buf() will not allow to go beyond the qiov.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/block/qcow2.c b/block/qcow2.c
index adf4514..c079aa8 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2565,7 +2565,7 @@  qcow2_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
         /* Zero-pad last write if image size is not cluster aligned */
         memset(buf + bytes, 0, s->cluster_size - bytes);
     }
-    qemu_iovec_to_buf(qiov, 0, buf, s->cluster_size);
+    qemu_iovec_to_buf(qiov, 0, buf, bytes);
 
     out_buf = g_malloc(s->cluster_size);