[PATCH 1/2] vfs/idmapped_mounts.c: Incorrect array index for nested user ns

[Taylor Jackson via B4 Relay <devnull+tjackson9431.gmail.com@kernel.org>]

From: Taylor Jackson <tjackson9431@gmail.com>

Within the vfs test for idmapped mounts, the function nested_userns()
is using an incorrect array index when attempting to set up the mapping
for the 4th nested user ns within hierarchy[4]. The correct index that
belongs to the 4th nested user ns is actually hierarchy[3].
And hierarchy[4] is reserved for the dummy entry that marks the end
of the array.

Signed-off-by: Taylor Jackson <tjackson9431@gmail.com>
---
 src/vfs/idmapped-mounts.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vfs/idmapped-mounts.c b/src/vfs/idmapped-mounts.c
index 547182fe..34052ca3 100644
--- a/src/vfs/idmapped-mounts.c
+++ b/src/vfs/idmapped-mounts.c
@@ -6556,7 +6556,7 @@ static int nested_userns(const struct vfstest_info *info)
 	}
 
 	/* Don't write a mapping in the 4th userns. */
-	list_empty(&hierarchy[4].id_map);
+	list_empty(&hierarchy[3].id_map);
 
 	/* Create the actual userns hierarchy. */
 	ret = create_userns_hierarchy(hierarchy);

-- 
2.34.1