diff options
| author | Kees Cook <keescook@chromium.org> | 2012-08-15 14:41:55 -0400 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2012-08-17 06:40:38 -0400 |
| commit | 7612bfeecc197bbb6629842b5c6ff1967f0a9b70 (patch) | |
| tree | d73acd2bc97866b256a70acb83e4ca69bce6e32d /security/selinux/xfrm.c | |
| parent | d9875690d9b89a866022ff49e3fcea892345ad92 (diff) | |
Yama: access task_struct->comm directly
The core ptrace access checking routine holds a task lock, and when
reporting a failure, Yama takes a separate task lock. To avoid a
potential deadlock with two ptracers taking the opposite locks, do not
use get_task_comm() and just use ->comm directly since accuracy is not
important for the report.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Suggested-by: Oleg Nesterov <oleg@redhat.com>
CC: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'security/selinux/xfrm.c')
0 files changed, 0 insertions, 0 deletions