Re: [Bug 214453] New: skl_int3472_unregister_clock: kernel NULL pointer dereference (HP Elite x2 1013 G3)

From: Daniel Scally
Date: Tue Oct 05 2021 - 10:45:05 EST


Hi Borislav

On 04/10/2021 17:59, Borislav Petkov wrote:
> Adding more people to Cc.
>
> On Fri, Sep 17, 2021 at 12:18:27PM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
>> https://bugzilla.kernel.org/show_bug.cgi?id=214453
>>
>> Bug ID: 214453
>> Summary: skl_int3472_unregister_clock: kernel NULL pointer
>> dereference (HP Elite x2 1013 G3)
>> Product: Platform Specific/Hardware
>> Version: 2.5
>> Kernel Version: 5.14.5
>> Hardware: Intel
>> OS: Linux
>> Tree: Mainline
>> Status: NEW
>> Severity: low
>> Priority: P1
>> Component: x86-64
>> Assignee: platform_x86_64@xxxxxxxxxxxxxxxxxxxx
>> Reporter: kernel-NTEO@xxxxxxxxx
>> Regression: No
>>
>> Created attachment 298863
>> --> https://bugzilla.kernel.org/attachment.cgi?id=298863&action=edit
>> dmesg oops log
>>
>> On a HP Elite x2 1013 G3 a kernel oops is caused by int3472:
>>
>> [ 8.820565] int3472-discrete INT3472:02: No sensor module config
>> [ 8.820569] int3472-discrete INT3472:02: error -EINVAL: Failed to map
>> regulator to sensor
>> [ 8.820574] BUG: kernel NULL pointer dereference, address: 0000000000000000
>> [...]
>> [ 8.820654] Call Trace:
>> [ 8.820657] clkdev_drop+0x1d/0x60
>> [ 8.820665] skl_int3472_unregister_clock+0x15/0x30 [intel_skl_int3472
>> a61329898df9463f8661b1eee1ed1e20b1626f62]


Thanks for the report; let me take a look and see if I can spot what's
going wrong.


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