[PATCHv2 0/2] introduce get_task_exe_file and use it to fix audit_exe_compare

[Mateusz Guzik <mguzik@redhat.com>]

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.

Changes since v1:
* removed an unused 'out' label which crept in

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        | 23 +++++++++++++++++++++++
 4 files changed, 30 insertions(+), 9 deletions(-)

-- 
1.8.3.1