block: Mark bdrv_co_copy_range() GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_co_copy_range() need to hold a reader lock for the graph.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-15-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/qemu-img.c b/qemu-img.c
index cd0178b..9aeac69 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2041,7 +2041,9 @@ retry:
 
         if (s->ret == -EINPROGRESS) {
             if (copy_range) {
-                ret = convert_co_copy_range(s, sector_num, n);
+                WITH_GRAPH_RDLOCK_GUARD() {
+                    ret = convert_co_copy_range(s, sector_num, n);
+                }
                 if (ret) {
                     s->copy_range = false;
                     goto retry;