From 54c4ddcbab7396c58e1fc745663417ad7e872137 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 29 Jul 2016 12:05:24 +0200 Subject: [PATCH] ovl: disallow overlayfs as upperdir commit 76bc8e2843b66f8205026365966b49ec6da39ae7 upstream. This does not work and does not make sense. So instead of fixing it (probably not hard) just disallow. Reported-by: Andrei Vagin Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman --- fs/overlayfs/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index a1acc6004a91..70a7bbe199d0 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -376,7 +376,8 @@ static struct ovl_entry *ovl_alloc_entry(unsigned int numlower) static bool ovl_dentry_remote(struct dentry *dentry) { return dentry->d_flags & - (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE); + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | + DCACHE_OP_REAL); } static bool ovl_dentry_weird(struct dentry *dentry) -- 2.20.1