linux-kernel - Re: [syzbot] [fs?] WARNING: bad unlock balance in namespace

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Message-ID: <tencent_364B6C75BD77B966CC3C1337A0968C36A609@qq.com>
Date: Wed, 24 Sep 2025 17:05:45 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+0d671007a95cd2835e05@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fs?] WARNING: bad unlock balance in namespace_unlock

#syz test

diff --git a/fs/namespace.c b/fs/namespace.c
index ac1aedafe05e..c22febeda1ac 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -4134,7 +4134,6 @@ struct mnt_namespace *copy_mnt_ns(u64 flags, struct mnt_namespace *ns,
 	new = copy_tree(old, old->mnt.mnt_root, copy_flags);
 	if (IS_ERR(new)) {
 		emptied_ns = new_ns;
-		namespace_unlock();
 		return ERR_CAST(new);
 	}
 	if (user_ns != ns->user_ns) {