landlock: opened file never has a negative dentry

[ Upstream commit d1832e648d2be564e4b5e357f94d0f33156590dc ]

Reviewed-by: Christian Brauner <brauner@kernel.org>
Acked-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/security/landlock/syscalls.c b/security/landlock/syscalls.c
index 33eafb71e4f31bb2ed396d85bf2e82fb85005fab..0116e9f93ffe30b432a16a48ee341ccb29405963 100644 (file)
--- a/security/landlock/syscalls.c
+++ b/security/landlock/syscalls.c
@@ -303,7 +303,6 @@ static int get_path_from_fd(const s32 fd, struct path *const path)
        if ((fd_file(f)->f_op == &ruleset_fops) ||
            (fd_file(f)->f_path.mnt->mnt_flags & MNT_INTERNAL) ||
            (fd_file(f)->f_path.dentry->d_sb->s_flags & SB_NOUSER) ||
-           d_is_negative(fd_file(f)->f_path.dentry) ||
            IS_PRIVATE(d_backing_inode(fd_file(f)->f_path.dentry)))
                return -EBADFD;