linux-kernel - Re: [PATCH] gpiolib: Fix locking on gpio debugfs files

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: <CACRpkdYBQDCuyff1cVaG2p_AaFvZ-sEX0B=j=Y4nsko8UDChHA@mail.gmail.com>
Date:	Mon, 11 Feb 2013 15:31:45 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	linux-kernel@...r.kernel.org,
	Alexandre Courbot <acourbot@...dia.com>
Subject: Re: [PATCH] gpiolib: Fix locking on gpio debugfs files

On Sat, Feb 9, 2013 at 11:34 AM, Grant Likely <grant.likely@...retlab.ca> wrote:

> The debugfs files really need to hold the gpiolib spinlock before
> accessing the list. Otherwise chip addition/removal will cause an oops.
>
> Cc: Alexandre Courbot <acourbot@...dia.com>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Signed-off-by: Grant Likely <grant.likely@...retlab.ca>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

> I've also got a draft patch that turns gpio chips into first-class
> kobjects which means we can do proper reference counting on them and
> prevent the structure from actually disappearing while other drivers
> still hold references.

Thank you for doing this!

Yours,
Linus Walleij
--
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/