tree 5af379028a8b12efb8193fee1737ea4ebe968969
parent 5c72263ef2fbe99596848f03758ae2dc593adf2c
author Kees Cook <keescook@chromium.org> 1644294073 -0800
committer Kees Cook <keescook@chromium.org> 1644548952 -0800

seccomp: Invalidate seccomp mode to catch death failures

If seccomp tries to kill a process, it should never see that process
again. To enforce this proactively, switch the mode to something
impossible. If encountered: WARN, reject all syscalls, and attempt to
kill the process again even harder.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will Drewry <wad@chromium.org>
Fixes: 8112c4f140fa ("seccomp: remove 2-phase API")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>