netdev - Re: [PATCH v2 led] leds: trigger: netdev: uninitialized variable in netdev_trig

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, 14 Jun 2023 02:51:59 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Christian Marangi <ansuelsmth@...il.com>, Pavel Machek <pavel@....cz>,
	Lee Jones <lee@...nel.org>, "David S. Miller" <davem@...emloft.net>,
	linux-leds@...r.kernel.org, kernel-janitors@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2 led] leds: trigger: netdev: uninitialized variable in
 netdev_trig_activate()

On Tue, Jun 13, 2023 at 09:46:53AM +0300, Dan Carpenter wrote:
> The qca8k_cled_hw_control_get() function which implements ->hw_control_get
> sets the appropriate bits but does not clear them.  This leads to an
> uninitialized variable bug.  Fix this by setting mode to zero at the
> start.
> 
> Fixes: e0256648c831 ("net: dsa: qca8k: implement hw_control ops")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
> v2: In the original patch I fixed qca8k_cled_hw_control_get() instead
> so that patch went to netdev instead of to the led subsystem.

I think his actually needs to be merged via netdev.  e0256648c831
("net: dsa: qca8k: implement hw_control ops") is in net-next/main.  I
don't see it in leds/master, leds/for-leds-next. Also, git blame shows
mode was added by 0316cc5629d1 ("leds: trigger: netdev: init mode if
hw control already active") which also appears only to be in
net-next/main.

A lot of these LED patches were merged via netdev because they are
cross subsystem.

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew