lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sat, 14 Sep 2013 20:08:52 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Steve Grubb <sgrubb@...hat.com>
Cc:	linux-audit@...hat.com, Richard Guy Briggs <rgb@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: audit looks unmaintained? [was: Re: [PATCH 11/12] pid: rewrite
	task helper functions avoiding task->pid and task->tgid]

On 09/13, Steve Grubb wrote:
>
> On Sunday, September 08, 2013 05:54:35 PM Oleg Nesterov wrote:
> >
> > Then why audit_alloc() doesn't set TIF_SYSCALL_AUDIT unconditionally?
>
> The code I'm looking at does right at the end of the function.

The code I'm looking at does right at the end too ;) but it also
returns at the start if audit_filter_task() returns AUDIT_DISABLED.

> > And I do not understand "when context == NULL" above. Say,
> > audit_syscall_entry() does nothing if !audit_context, and nobody except
> > copy_process() does audit_alloc(). So why do we need to trigger the audit's
> > paths if it is NULL?
>
> Because if you enter the audit framework,

framework? TIF_SYSCALL_AUDIT has only meaning in entry.S, we need it
to ensure that the audited task can't miss audit_syscall_*().

> that means auditing has been turned
> on at some point in the past, and could be turned back on at some point in the
> future.

And this will change nothing, afaics (wrt TIF_SYSCALL_AUDIT).

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists