From: Baruch Siach <baruch@tkos.co.il>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Thierry Reding <thierry.reding@gmail.com>,
Lee Jones <lee.jones@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Andrew Lunn <andrew@lunn.ch>,
Gregory Clement <gregory.clement@bootlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Sascha Hauer <s.hauer@pengutronix.de>,
Ralph Sennhauser <ralph.sennhauser@gmail.com>,
linux-pwm@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] gpio: mvebu: fix potential user-after-free on probe
Date: Mon, 30 Nov 2020 15:55:28 +0200 [thread overview]
Message-ID: <87blffdk4v.fsf@tarshish> (raw)
In-Reply-To: <20201130135130.rynozhii4yfxtmdh@pengutronix.de>
Hi Uwe,
On Mon, Nov 30 2020, Uwe Kleine-König wrote:
> On Mon, Nov 30, 2020 at 03:33:23PM +0200, Baruch Siach wrote:
>> When mvebu_pwm_probe() fails IRQ domain is not released. Move
>> mvebu_pwm_probe() before IRQ domain registration.
>
> And now if something with IRQ domain registration fails the pwm stuff
> isn't freed?
As far as I can see mvebu_pwm_probe() uses devres exclusively to
allocate resources.
baruch
--
~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
WARNING: multiple messages have this Message-ID (diff)
From: Baruch Siach <baruch@tkos.co.il>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-pwm@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Thierry Reding <thierry.reding@gmail.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
linux-gpio@vger.kernel.org,
Ralph Sennhauser <ralph.sennhauser@gmail.com>,
Lee Jones <lee.jones@linaro.org>,
Gregory Clement <gregory.clement@bootlin.com>,
linux-arm-kernel@lists.infradead.org,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: Re: [PATCH] gpio: mvebu: fix potential user-after-free on probe
Date: Mon, 30 Nov 2020 15:55:28 +0200 [thread overview]
Message-ID: <87blffdk4v.fsf@tarshish> (raw)
In-Reply-To: <20201130135130.rynozhii4yfxtmdh@pengutronix.de>
Hi Uwe,
On Mon, Nov 30 2020, Uwe Kleine-König wrote:
> On Mon, Nov 30, 2020 at 03:33:23PM +0200, Baruch Siach wrote:
>> When mvebu_pwm_probe() fails IRQ domain is not released. Move
>> mvebu_pwm_probe() before IRQ domain registration.
>
> And now if something with IRQ domain registration fails the pwm stuff
> isn't freed?
As far as I can see mvebu_pwm_probe() uses devres exclusively to
allocate resources.
baruch
--
~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
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next prev parent reply other threads:[~2020-11-30 13:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-30 13:33 [PATCH] gpio: mvebu: fix potential user-after-free on probe Baruch Siach
2020-11-30 13:33 ` Baruch Siach
2020-11-30 13:51 ` Uwe Kleine-König
2020-11-30 13:51 ` Uwe Kleine-König
2020-11-30 13:55 ` Baruch Siach [this message]
2020-11-30 13:55 ` Baruch Siach
2020-11-30 14:43 ` Uwe Kleine-König
2020-11-30 14:43 ` Uwe Kleine-König
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