tree 88c802202a7ae166f8da96ce3bcf43970eb314cd
parent c0c3a718e3ab2430a52a60d614b109e5e48e83e2
author Jan Kara <jack@suse.cz> 1432217152 +0200
committer Al Viro <viro@zeniv.linux.org.uk> 1435096868 -0400

fs: Fix S_NOSEC handling

file_remove_suid() could mistakenly set S_NOSEC inode bit when root was
modifying the file. As a result following writes to the file by ordinary
user would avoid clearing suid or sgid bits.

Fix the bug by checking actual mode bits before setting S_NOSEC.

CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>