linux-kernel - Re: [PATCH] audit: clear thread flag for new children

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]

Message-Id: <200710271021.42093.sgrubb@redhat.com>
Date:	Sat, 27 Oct 2007 10:21:39 -0400
From:	Steve Grubb <sgrubb@...hat.com>
To:	linux-audit@...hat.com
Cc:	Tony Jones <tonyj@...e.de>, linux-kernel@...r.kernel.org,
	chrisw@...s-sol.org, viro@....linux.org.uk
Subject: Re: [PATCH] audit: clear thread flag for new children

On Friday 26 October 2007 04:42:28 pm Tony Jones wrote:
> Thread flag TIF_SYSCALL_AUDIT is not cleared for new children when audit
> context creation has been disabled (auditctl -e0). This can cause new
> children forked from a parent created when audit was enabled to not take
> the fastest syscall path thru entry.S

This came up almost 2 years ago:

https://www.redhat.com/archives/linux-audit/2005-September/msg00048.html

The problem is that removing that flag makes the children unauditable in the 
future. The only place that flag gets set is during fork. Unless I'm missing 
something, to make all children auditable again would mean stopping all 
processes and or'ing that flag into all thread info areas. I do not want to 
propose that patch to LKML.  :)

-Steve
-
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/