linux-kernel - Re: [PATCH RT 3/4] net: netfilter: Serialize xt_write

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:	Thu, 1 Nov 2012 17:36:25 -0700
From:	Peter LaDow <petela@...ougs.wsu.edu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>, John Kacur <jkacur@...hat.com>
Subject: Re: [PATCH RT 3/4] net: netfilter: Serialize xt_write_recseq sections
 on RT

On Tue, Oct 30, 2012 at 5:33 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
> From: Thomas Gleixner <tglx@...utronix.de>
>
> The netfilter code relies only on the implicit semantics of
> local_bh_disable() for serializing wt_write_recseq sections. RT breaks
> that and needs explicit serialization here.
>
> Reported-by: Peter LaDow <petela@...ougs.wsu.edu>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

> diff --git a/include/linux/locallock.h b/include/linux/locallock.h
> index f1804a3..a5eea5d 100644

> diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
> index 32cddf7..bed90da2 100644

> diff --git a/net/netfilter/core.c b/net/netfilter/core.c
> index 899b71c..5db16ea 100644

I'm have a setup running 3.0.48-rt72.  It's been running about 8 hours
so far, and tomorrow I'll know if there's been any problems.  I'm
confident things will be fine tomorrow, and at that time I'll be glad
to attach a Tested-by tag.

Thanks,
Pete
--
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/