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-rw-r--r--cmd/zdb/zdb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cmd/zdb/zdb.c b/cmd/zdb/zdb.c
index 7a0f55f75e9b..b9b0b29bca61 100644
--- a/cmd/zdb/zdb.c
+++ b/cmd/zdb/zdb.c
@@ -3290,7 +3290,7 @@ zdb_vdev_lookup(vdev_t *vdev, char *path)
return (NULL);
vdev = vdev->vdev_child[i];
- if (*s == '\0')
+ if (s && *s == '\0')
return (vdev);
return (zdb_vdev_lookup(vdev, s+1));