linux-kernel - Re: [PATCH 03/11] jump label: Base patch for jump label

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: <1285336460.31083.10.camel@gandalf.stny.rr.com>
Date:	Fri, 24 Sep 2010 09:54:20 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Jason Baron <jbaron@...hat.com>
Cc:	Mathieu Desnoyers <compudj@...stal.dyndns.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	David Miller <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 03/11] jump label: Base patch for jump label

On Thu, 2010-09-23 at 14:40 -0400, Jason Baron wrote:

> I agree that we this synchronization for the module __init section.
> 
> However, I believe we are ok for module removal case. free_module() is
> called *after* blocking_notifier_call_chain() call. The
> blocking_notifier_call_chain() is going to call back into the jump label
> code, grab the jump_label_mutex and remove the reference to the module that
> is about to freed. Thus, the jump label code can no longer reference it.
> 
> So I think the following patch is all that is required here (lightly
> tested).
> 
> Steve, I'll re-post as a separate patch, if we agree on this fix.

Ug, I'm struggling to get ready for my Tokyo trip. I'll try to look at
it on the flight. But I still need to write my presentation :-)

I may have a response back till Monday or Tuesday.

-- 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/