linux-kernel - Re: wmi: usercopy: Kernel memory overwrite attempt detected to spans multiple pages (offset 0, size 4104)

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Date:   Sun, 17 Jun 2018 19:03:33 -0400
From:   valdis.kletnieks@...edu
To:     Mihai Donțu <mihai.dontu@...il.com>
Cc:     Kees Cook <keescook@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: wmi: usercopy: Kernel memory overwrite attempt detected to spans multiple pages (offset 0, size 4104)

On Sun, 17 Jun 2018 22:30:27 +0300, Mihai Don��u said:

> Your patch works OK for me, thank you. The libsmbios tool, however, not
> so much. It appears to be behind latest developments.
>
> # echo "+keyboard" >/sys/class/leds/dell\:\:kbd_backlight/start_triggers
>
> is all that is needed today.

If you're ever in this remote corner of southwest Virginia, I owe you a beverage.
I was going bonkers trying to figure out why my Dell Latitude's keyboard no
longer had a backlight... (and wondering if I was going to need to replace it
*again* - this laptop is 5 years old and on its third keyboard already)

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