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-rw-r--r--block/nbd.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/nbd.c b/block/nbd.c
index 5f18f78a94..d085554f21 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -866,6 +866,7 @@ typedef struct NBDReplyChunkIter {
 static void nbd_iter_channel_error(NBDReplyChunkIter *iter,
                                    int ret, Error **local_err)
 {
+    assert(local_err && *local_err);
     assert(ret < 0);
 
     if (!iter->ret) {