linux-kernel - kernel-4.9.270 crash

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Date:   Sun, 5 Sep 2021 21:00:45 +0200
From:   wim <wim@....tudelft.nl>
To:     gregkh@...uxfoundation.org
Cc:     wim <wim@....tudelft.nl>, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: kernel-4.9.270 crash

On Sun, Sep 05, 2021 at 01:52:31AM +0200, wim wrote:
> 
> Hello Greg,
> 
> from kernel-4.9.270 up until now (4.9.282) I experience kernel crashes upon
> loading a GPU module.
> It happens on two out of at least six different machines.
> I can't believe that I'm the only one where that happens, but since the bug
> is still there twelve versions later, I need to report this.
> 
> I run Gentoo with vanilla kernels.
> Upon loading i915.ko (automatically or manually) my laptop freezes until
> power-down. (Note that other machines using i915.ko have no problems here.)
> It's an Asus laptop with Intel chipset with a peculiarity:
> 
>  00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
>  01:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940MX] (rev a2)
> 
> (It uses Intel natively and nobody knows how to make use of that Nvidia chip)
> 
> 
> On an AMD desktop I get the same crash upon loading of nouveau.ko .
> 
> Something ugly must have been introduced in kernel-4.9.270 .
> Strace modprobe .. only prints two lines on the screen.
> Strace modprobe .. 2>&1 > file produces only an empty file.
> 
> Any ideas?
 
Regards,
Wim Osterholt.