linux-kernel - Re: [PATCH v3 1/3] virtio_console: Fix locking of vtermno.

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:	Fri, 11 Nov 2011 14:57:20 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Miche Baker-Harvey <miche@...gle.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	xen-devel@...ts.xensource.com,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	Anton Blanchard <anton@...ba.org>,
	Amit Shah <amit.shah@...hat.com>,
	Mike Waychison <mikew@...gle.com>,
	ppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Eric Northrup <digitaleric@...gle.com>
Subject: Re: [PATCH v3 1/3] virtio_console:  Fix locking of vtermno.

On Tue, 08 Nov 2011 13:44:58 -0800, Miche Baker-Harvey <miche@...gle.com> wrote:
> Some modifications of vtermno were not done under the spinlock.
> 
> Moved assignment from vtermno and increment of vtermno together,
> putting both under the spinlock.  Revert vtermno on failure.
> 
> Signed-off-by: Miche Baker-Harvey <miche@...gle.com>

Does it matter?  It's normal not to lock in a function called
"init_XXX", since it's not exposed yet.

Or is it?

Thanks,
Rusty.
--
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/