linux-kernel - [PATCH 2/3] vfs: catch invalid modes in may

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Message-ID: <20250205183839.395081-3-mjguzik@gmail.com>
Date: Wed,  5 Feb 2025 19:38:38 +0100
From: Mateusz Guzik <mjguzik@...il.com>
To: brauner@...nel.org
Cc: viro@...iv.linux.org.uk,
	jack@...e.cz,
	linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	Mateusz Guzik <mjguzik@...il.com>
Subject: [PATCH 2/3] vfs: catch invalid modes in may_open

Signed-off-by: Mateusz Guzik <mjguzik@...il.com>
---
 fs/namei.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/namei.c b/fs/namei.c
index 3ab9440c5b93..c2822fd94a8a 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3415,6 +3415,8 @@ static int may_open(struct mnt_idmap *idmap, const struct path *path,
 		if ((acc_mode & MAY_EXEC) && path_noexec(path))
 			return -EACCES;
 		break;
+	default:
+		VFS_BUG_ON_INODE(0, inode);
 	}
 
 	error = inode_permission(idmap, inode, MAY_OPEN | acc_mode);
-- 
2.43.0