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-rw-r--r--hw/virtio/vhost-user.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 71c3e16f67..1b6c5ac238 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -206,7 +206,7 @@ static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base,
     VhostUserMsg msg = {
         .request = VHOST_USER_SET_LOG_BASE,
         .flags = VHOST_USER_VERSION,
-        .payload.log.mmap_size = log->size,
+        .payload.log.mmap_size = log->size * sizeof(*(log->log)),
         .payload.log.mmap_offset = 0,
         .size = sizeof(msg.payload.log),
     };