diff --git a/block/blkverify.c b/block/blkverify.c
index dae9716a26..9ea2cb4cc5 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -33,8 +33,8 @@ typedef struct BlkverifyRequest {
     uint64_t bytes;
     int flags;
 
-    int (*request_fn)(BdrvChild *, int64_t, int64_t, QEMUIOVector *,
-                      BdrvRequestFlags);
+    int GRAPH_RDLOCK_PTR (*request_fn)(
+        BdrvChild *, int64_t, int64_t, QEMUIOVector *, BdrvRequestFlags);
 
     int ret;                    /* test image result */
     int raw_ret;                /* raw image result */
@@ -170,8 +170,11 @@ static void coroutine_fn blkverify_do_test_req(void *opaque)
     BlkverifyRequest *r = opaque;
     BDRVBlkverifyState *s = r->bs->opaque;
 
+    bdrv_graph_co_rdlock();
     r->ret = r->request_fn(s->test_file, r->offset, r->bytes, r->qiov,
                            r->flags);
+    bdrv_graph_co_rdunlock();
+
     r->done++;
     qemu_coroutine_enter_if_inactive(r->co);
 }
@@ -180,13 +183,16 @@ static void coroutine_fn blkverify_do_raw_req(void *opaque)
 {
     BlkverifyRequest *r = opaque;
 
+    bdrv_graph_co_rdlock();
     r->raw_ret = r->request_fn(r->bs->file, r->offset, r->bytes, r->raw_qiov,
                                r->flags);
+    bdrv_graph_co_rdunlock();
+
     r->done++;
     qemu_coroutine_enter_if_inactive(r->co);
 }
 
-static int coroutine_fn
+static int coroutine_fn GRAPH_RDLOCK
 blkverify_co_prwv(BlockDriverState *bs, BlkverifyRequest *r, uint64_t offset,
                   uint64_t bytes, QEMUIOVector *qiov, QEMUIOVector *raw_qiov,
                   int flags, bool is_write)
@@ -222,7 +228,7 @@ blkverify_co_prwv(BlockDriverState *bs, BlkverifyRequest *r, uint64_t offset,
     return r->ret;
 }
 
-static int coroutine_fn
+static int coroutine_fn GRAPH_RDLOCK
 blkverify_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
                     QEMUIOVector *qiov, BdrvRequestFlags flags)
 {
@@ -251,7 +257,7 @@ blkverify_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
     return ret;
 }
 
-static int coroutine_fn
+static int coroutine_fn GRAPH_RDLOCK
 blkverify_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
                      QEMUIOVector *qiov, BdrvRequestFlags flags)
 {