Re: [PATCH] leds: lm3697: Fix out-of-bound access

Pavel Machek
2020-10-03T13:56:07Z

[-- Attachment #1: Type: text/plain, Size: 907 bytes --]

Hi!

> Signed-off-by: Ultracoolguy <ultracoolguy@tutanota.com>

I'll need your real name to apply a patch.

> Hi, all. This is a patch fixing an out-of-bounds error due to lm3697_init expecting the device tree to use both control banks.  This fixes it by adding a new variable that will hold the number of used banks.
>
> Panic caused by this bug:

> <7>[    3.059893] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G        W         5.9.0-rc7-postmarketos-qcom-msm8953 #71

Ok, so I assume this is only problem with certain device trees, and
not a problem with dts' in mainline?

This is not trivial patch, no need to cc trivial tree. OTOH Ccing
Marek who did a lot of cleanups in -next might be useful. Doing that
now.

Best regards,

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]