From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: "Jacek Anaszewski" <jacek.anaszewski@gmail.com>,
"Rasmus Villemoes" <linux@rasmusvillemoes.dk>,
"Pavel Machek" <pavel@ucw.cz>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>, linux-leds@vger.kernel.org
Subject: Re: [PATCH v2 1/6] leds: netdev trigger: use memcpy in device_name_store
Date: Wed, 27 Mar 2019 16:26:27 +0100 [thread overview]
Message-ID: <d1fccd75-c48b-d585-1170-1c1b76e1e098@rasmusvillemoes.dk> (raw)
In-Reply-To: <987c3e60-edb3-44f0-be28-434c70bb8659@gmail.com>
On 26/03/2019 20.53, Jacek Anaszewski wrote:
> Hi Rasmus,
>
> Thank you for the patch.
>
> On 3/14/19 3:06 PM, Rasmus Villemoes wrote:
>> If userspace doesn't end the input with a newline (which can easily
>> happen if the write happens from a C program that does write(fd,
>> iface, strlen(iface))), we may end up including garbage from a
>> previous, longer value in the device_name. For example
>>
>> # cat device_name
>>
>> # printf 'eth12' > device_name
>> # cat device_name
>> eth12
>> # printf 'eth3' > device_name
>> # cat device_name
>> eth32
>>
>
> Added tag:
>
> Fixes: 06f502f57d0d ("leds: trigger: Introduce a NETDEV trigger")
>
> and applied to the fixes-for-5.1-rc3 branch.
>
You're stripping lines beginning with #. This is the commit in -next:
commit 09466021a80c926aa7de68e5162bdfea2a117483
Author: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: Thu Mar 14 15:06:14 2019 +0100
leds: netdev trigger: use memcpy in device_name_store
If userspace doesn't end the input with a newline (which can easily
happen if the write happens from a C program that does write(fd,
iface, strlen(iface))), we may end up including garbage from a
previous, longer value in the device_name. For example
eth12
eth32
which is entirely useless and confusing. Please fix this before it
actually hits mainline. And you may want to look into "git commit
--cleanup" and/or "git config commit.cleanup" (scissors is much better
than the default strip).
Rasmus
next prev parent reply other threads:[~2019-03-27 15:26 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-11 10:59 replacement for CAN_LEDS Rasmus Villemoes
2019-03-11 14:42 ` Pavel Machek
2019-03-13 20:26 ` [PATCH 0/4] leds: netdev trigger: allow setting initial values in device tree Rasmus Villemoes
2019-03-13 20:26 ` [PATCH 1/4] leds: netdev trigger: use memcpy in device_name_store Rasmus Villemoes
2019-03-14 9:29 ` Uwe Kleine-König
2019-03-14 9:57 ` Rasmus Villemoes
2019-03-14 10:04 ` Uwe Kleine-König
2019-03-14 10:14 ` Pavel Machek
2019-03-14 10:54 ` Rasmus Villemoes
2019-03-14 12:16 ` Pavel Machek
2019-03-13 20:26 ` [PATCH 2/4] leds: netdev trigger: factor out middle part of device_name_store Rasmus Villemoes
2019-03-14 9:31 ` Uwe Kleine-König
2019-03-14 9:57 ` Rasmus Villemoes
2019-03-14 10:15 ` Pavel Machek
2019-03-14 10:20 ` Uwe Kleine-König
2019-03-13 20:26 ` [PATCH 3/4] leds: netdev trigger: add documentation to leds/common.txt Rasmus Villemoes
2019-03-13 20:26 ` [PATCH 4/4] leds: netdev trigger: allow setting initial values in device tree Rasmus Villemoes
2019-03-14 9:36 ` Uwe Kleine-König
2019-03-14 10:28 ` Rasmus Villemoes
2019-03-14 10:29 ` Pavel Machek
2019-03-14 11:26 ` Rasmus Villemoes
2019-03-14 12:00 ` Pavel Machek
2019-03-14 13:19 ` Rasmus Villemoes
2019-03-17 19:11 ` Pavel Machek
2019-03-24 20:39 ` Rasmus Villemoes
2019-03-14 10:32 ` Jacek Anaszewski
2019-03-14 14:06 ` [PATCH v2 0/6] " Rasmus Villemoes
2019-03-14 14:06 ` [PATCH v2 1/6] leds: netdev trigger: use memcpy in device_name_store Rasmus Villemoes
2019-03-18 11:20 ` Pavel Machek
2019-03-26 19:53 ` Jacek Anaszewski
2019-03-27 15:26 ` Rasmus Villemoes [this message]
2019-03-27 21:20 ` Jacek Anaszewski
2019-03-27 21:31 ` Rasmus Villemoes
2019-03-27 21:45 ` Jacek Anaszewski
2019-03-14 14:06 ` [PATCH v2 2/6] leds: netdev trigger: factor out middle part of device_name_store Rasmus Villemoes
2019-03-18 11:24 ` Pavel Machek
2019-03-14 14:06 ` [PATCH v2 3/6] leds: netdev trigger: move newline handling back to device_name_store Rasmus Villemoes
2019-03-18 11:25 ` Pavel Machek
2019-03-14 14:06 ` [PATCH v2 4/6] leds: netdev trigger: move name length checking to netdev_trig_set_device Rasmus Villemoes
2019-03-18 11:26 ` Pavel Machek
2019-03-14 14:06 ` [PATCH v2 5/6] leds: netdev trigger: add documentation to leds/common.txt Rasmus Villemoes
2019-03-14 14:06 ` [PATCH v2 6/6] leds: netdev trigger: allow setting initial values in device tree Rasmus Villemoes
2019-03-14 14:24 ` Jacek Anaszewski
2019-03-14 15:05 ` Rasmus Villemoes
2019-03-14 15:36 ` Jacek Anaszewski
2019-03-18 11:54 ` Pavel Machek
2019-03-28 16:28 ` Rob Herring
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