From: Jarkko Nikula <jarkko.nikula@linux.intel.com>
To: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: Samuel Clark <slc2015@gmail.com>,
"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: regression: Null pointer exception on resume from S3 with i2c DesignWare driver
Date: Fri, 6 May 2022 11:44:43 +0300 [thread overview]
Message-ID: <e6eacb51-bd9f-e014-5735-a624186458a8@linux.intel.com> (raw)
In-Reply-To: <941f292d-2ce2-d7aa-3d70-01a11ba171cf@leemhuis.info>
Hi
On 5/5/22 12:52, Thorsten Leemhuis wrote:
>> Running Manjaro on a Gigabyte B660M DS3H DDR4 with custom 5.17 kernel. Confirmed on other distributions and kernels back to 5.12; issue is not present on most recent 5.11 kernel. dmesg traceback points to i2c DesignWare driver, specifically drivers/i2c/busses/i2c-designware-master.c:369. It seems the msgs struct passed in to i2c_dw_xfer_msg is null.
>>
>> Similar issue seems to be reported here: https://lore.kernel.org/lkml/YY5BRrE8bLyvd3PB@smile.fi.intel.com/t/
>>
>> lspci output: https://pastebin.com/MwFM2VBJ
>> dmesg from crashed kernel: https://pastebin.com/t6GsHjkq
>> kernel config: https://pastebin.com/awrSve5u
>
> Could somebody take a look into this? Or was this discussed somewhere
> else already? Or even fixed?
>
> Anyway, to get this tracked:
>
> #regzbot introduced: v5.11..v5.12
> #regzbot from: Samuel Clark <slc2015@gmail.com>
> #regzbot title: i2c: designware: Null pointer exception on resume from S3
> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215907
>
Thanks for sharing the bug. The reason why it occurs after v5.11 is that
the i2c-designware support for Alder Lake -S came to v5.12 and issue is
hiding before it.
Looks like there are suspend/resume issues with i2c-designware on some
Gigabyte motherboards. I commented in the bugzilla if Samuel can attach
the ACPI dump there.
Jarkko
prev parent reply other threads:[~2022-05-06 8:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-05 9:52 regression: Null pointer exception on resume from S3 with i2c DesignWare driver Thorsten Leemhuis
2022-05-06 8:44 ` Jarkko Nikula [this message]
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