linux-hardening - [PATCH 0/2] exit: Introduce _

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Message-Id: <20220214213823.3297816-1-keescook@chromium.org>
Date:   Mon, 14 Feb 2022 13:38:21 -0800
From:   Kees Cook <keescook@...omium.org>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Christian Brauner <brauner@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Robert Święcki <robert@...ecki.net>,
        Jann Horn <jannh@...gle.com>, Oleg Nesterov <oleg@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: [PATCH 0/2] exit: Introduce __WCHILDSIGINFO for waitid

Hi,

Okay, here's a working version of this. Is adding 48 bytes into task
struct worth it? Can this be improved, and is the non-signal-exit logic
for __WCHILDSIGINFO sane?

Other thoughts?

-Kees

Kees Cook (2):
  exit: Introduce __WCHILDSIGINFO for waitid
  selftests/seccomp: Check for waitid() behavior

 include/linux/sched.h                         |   1 +
 include/uapi/linux/wait.h                     |   1 +
 kernel/exit.c                                 |  23 +++-
 kernel/signal.c                               |   4 +
 tools/testing/selftests/seccomp/seccomp_bpf.c | 130 ++++++++++++++++++
 5 files changed, 155 insertions(+), 4 deletions(-)

-- 
2.30.2