linux-kernel - Re: [PATCH] gpio: pca953x: fix irq_domain_add

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:	Wed, 10 Apr 2013 22:54:31 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>, jimwall@...om,
	brian@...stalfontz.com,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: pca953x: fix irq_domain_add_simple usage

On Wed, Apr 3, 2013 at 7:40 PM, Alexandre Belloni
<alexandre.belloni@...e-electrons.com> wrote:

> We actually have to pass chip as the host_data parameter of
> irq_domain_add_simple() as later on, it is used to initialize chip_data
> in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer
> dereference after calling irq_data_get_irq_chip_data() in
> pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(),
> pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type().
>
> Fixes regression introduced by commit
> 0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple
> irqdomain)
>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
> ---
>
> This would probably be good to introduce that patch in the next 3.9 rc as the
> regression leads to a lot of breakage (and cursing).

OK patch applied let's see if I get it to Torvalds in time.

Can I have some ACK from Maxime?

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/