[Devel] [PATCH vz10] fs/binfmt_misc: set FS_VIRTUALIZED on binfmt_misc

[Vasileios Almpanis]

binfmt_misc is already isolated per user/mount namespace, but mount and
policy paths need the explicit FS_VIRTUALIZED flag to recognize that
and pass the right checks.

https://virtuozzo.atlassian.net/browse/VSTOR-128135
Signed-off-by: Vasileios Almpanis <vasileios.almpanis at virtuozzo.com>
---
 fs/binfmt_misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 31660d8cc2c6..e385197c6402 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -1062,7 +1062,7 @@ static struct file_system_type bm_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "binfmt_misc",
 	.init_fs_context = bm_init_fs_context,
-	.fs_flags	= FS_USERNS_MOUNT,
+	.fs_flags	= FS_VIRTUALIZED | FS_USERNS_MOUNT,
 	.kill_sb	= kill_litter_super,
 };
 MODULE_ALIAS_FS("binfmt_misc");
-- 
2.43.0