linux-kernel - [PATCH v2 0/6] exec: s/group_exit_task/group_exec

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Date:   Tue, 23 Jun 2020 16:52:43 -0500
From:   ebiederm@...ssion.com (Eric W. Biederman)
To:     <linux-kernel@...r.kernel.org>
Cc:     <linux-fsdevel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>, Jann Horn <jannh@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Bernd Edlinger <bernd.edlinger@...mail.de>
Subject: [PATCH v2 0/6] exec: s/group_exit_task/group_exec_task/ for clarity

There is a variable tsk->signal->group_exit_task that is only truly used
in de_thread.  These changes modify the coredump code and the
signal_group_exit() function to stop using group_exit_task, and rename
the group_exit_task variable to group_exec_task.

In addition as I think Linus was asking an additional signal flag is
added called SIGNAL_GROUP_DETHREAD, and that flag is used in the
function signal_group_exit() so that only signal->flags needs to be
tested.

Eric W. Biederman (6):
      signal: Pretty up the SIGNAL_GROUP_FLAGS
      exec: Lock more defensively in exec
      signal: Implement SIGNAL_GROUP_DETHREAD
      signal: In signal_group_exit remove the group_exit_task test
      coredump: Stop using group_exit_task
      exec: Rename group_exit_task group_exec_task and correct the Documentation

 fs/coredump.c                |  2 --
 fs/exec.c                    | 22 ++++++++++++++++------
 include/linux/sched/signal.h | 33 +++++++++++++++++----------------
 kernel/exit.c                |  4 ++--
 4 files changed, 35 insertions(+), 26 deletions(-)