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SubjectRe: [PATCH 6.1 0000/1146] 6.1.2-rc1 review
----- On Dec 29, 2022, at 1:13 AM, Greg KH gregkh@linuxfoundation.org wrote:

> On Wed, Dec 28, 2022 at 04:29:39PM -0600, Walt Holman wrote:
>> > This is the start of the stable review cycle for the 6.1.2 release.
>> > There are 1146 patches in this series, all will be posted as a response
>> > to this one. If anyone has any issues with these being applied, please
>> > let me know.
>> >
>> > Responses should be made by Fri, 30 Dec 2022 14:41:29 +0000.
>> > Anything received after that time might be too late.
>> >
>> > The whole patch series can be found in one patch at:
>> > [ https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.2-rc1.gz
>> > | https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.2-rc1.gz
>> > ] > or in the git tree and branch at:
>> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>> > linux-6.1.y
>> > and the diffstat can be found below.
>> >
>> > thanks,
>> >
>> > greg k-h
>> >
>> > -------------
>>
>> Hello,
>>
>> I'm getting a NULL Pointer Dereference when shutting down or rebooting. It
>> happens just as it tries to shut down the swap device ( /dev/dm-3 ). This
>> happens late in the shutdown process and nothing gets saved in the logs.
>> However, I've attached a photo of my screen showing the Oops and stack trace.
>> Let me know if there's anything you'd like me to try.
>
> Does this happen with 6.1.1 also?
>
> Can you use 'git bisect' to track down the offending change?
>
> thanks,
>
> greg k-h

This does NOT happen with 6.1.1 I'll get on bisecting here in a bit. I'm wondering about the changes that were made to blk-mq.c That's where the new quiesce code and the null pointer dereference occur. I'll start by rolling back that commit and see what happens before bisecting.

-Walt

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