| commit | fbaa122718a1235f4f83baa3abaad21cfefdbc9d | [log] [tgz] |
|---|---|---|
| author | Peter Hurley <peter@hurleysoftware.com> | Sat Jan 09 22:55:36 2016 -0800 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Jan 27 16:41:04 2016 -0800 |
| tree | 4ded90498dab94dce2f1c2c6679558ff217343fb | |
| parent | 5493090fc2341d9f28bdd9e81445fe0a130bafc2 [diff] |
tty: audit: Simplify first-use allocation The first-use tty audit buffer allocation is a potential race amongst multiple attempts at 'first-use'; only one 'winner' is acceptable. The successful buffer assignment occurs if tty_audit_buf == NULL (which will also be the return from cmpxchg()); otherwise, another racer 'won' and this buffer allocation is freed. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>