linux-kernel - [PATCH 0/2] introduce get_task_exe_file and use it to fix audit_exe

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Message-Id: <1471899083-7937-1-git-send-email-mguzik@redhat.com>
Date:   Mon, 22 Aug 2016 22:51:21 +0200
From:   Mateusz Guzik <mguzik@...hat.com>
To:     Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
        Richard Guy Briggs <rgb@...hat.com>
Cc:     ebiederm@...ssion.com, oleg@...hat.com, sgrubb@...hat.com,
        pmoore@...hat.com, eparis@...hat.com, luto@...capital.net,
        linux-audit@...hat.com, linux-kernel@...r.kernel.org,
        Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH 0/2] introduce get_task_exe_file and use it to fix audit_exe_compare

audit_exe_compare directly accesses mm->exe_file without making sure the
object is stable. Fixing it using current primitives results in
partially duplicating what proc_exe_link is doing.

As such, introduce a trivial helper which can be used in both places and
fix the func.

Mateusz Guzik (2):
  mm: introduce get_task_exe_file
  audit: fix exe_file access in audit_exe_compare

 fs/proc/base.c       |  7 +------
 include/linux/mm.h   |  1 +
 kernel/audit_watch.c |  8 +++++---
 kernel/fork.c        | 24 ++++++++++++++++++++++++
 4 files changed, 31 insertions(+), 9 deletions(-)

-- 
1.8.3.1