APPLIED: [SRU][Jammy][PATCH 0/2] alsa: soc: the kernel print UBSAN calltrace on the machine with cs35l41 codec

[Stefan Bader]

On 10.11.22 02:25, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1996121
> 
> The cs35l41 codec driver was backported to Jammy kernel a couple of
> months ago, recently the Jammy kernel was adopted as the hwe kernel
> for OEM machines and with this kernel the UBSAN calltrace was seen,
> need to backport these 2 patches. Kinetic kernel already has the
> patches, so this SRU is only for Jammy kernel.
> 
> [Impact]
> Install the 5.15 hwe kernel on the machines with cs35l41
> codec, after booting and check the dmesg, there is a UBSAN calltrace.
> 
> [Fix]
> Backport 2 patches from mainline kernel to fix this problem.
> 
> [Test]
> boot the patched kernel on the machine, check the dmesg, there
> is no UBSAN calltrace, and test the audio functions, all input
> and output devices coudl work as well as before.
> 
> 
> [Where problems could occur]
> The patch only affects the cirruslogic asoc codec driver, if it
> could introduce the regression, it will be on the machines with
> cs codec, and it will make the audio driver initialization fail
> and make the system lose the audio function. But this possibility
> is very low, we tested the patches on many oem machines, all
> worked well.
> 
> 
> Hui Wang (2):
>    ASoC: cs35l41: Add one more variable in the debug log
>    ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t
> 
>   include/sound/cs35l41.h        |  1 -
>   sound/soc/codecs/cs35l41-lib.c | 18 +++++++++---------
>   2 files changed, 9 insertions(+), 10 deletions(-)
> 

Applied to jammy:linux/master-next. Thanks.

-Stefan

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