diff --git a/tools/virtiofsd/buffer.c b/tools/virtiofsd/buffer.c
index 27c1377f22..bdc608c221 100644
--- a/tools/virtiofsd/buffer.c
+++ b/tools/virtiofsd/buffer.c
@@ -246,6 +246,10 @@ static int fuse_bufvec_advance(struct fuse_bufvec *bufv, size_t len)
 {
     const struct fuse_buf *buf = fuse_bufvec_current(bufv);
 
+    if (!buf) {
+        return 0;
+    }
+
     bufv->off += len;
     assert(bufv->off <= buf->size);
     if (bufv->off == buf->size) {