linux-kernel - Re: Hang loading initrd since last Friday.

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Message-ID: <835c3de6-7460-226c-96e7-839aeef6064e@amd.com>
Date:   Thu, 4 May 2023 22:08:31 +0530
From:   Raghavendra K T <raghavendra.kt@....com>
To:     Ben Greear <greearb@...delatech.com>,
        Linux regressions mailing list <regressions@...ts.linux.dev>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:     Jens Axboe <axboe@...nel.dk>
Subject: Re: Hang loading initrd since last Friday.

On 5/4/2023 5:19 AM, Ben Greear wrote:
> On 5/2/23 21:46, Linux regression tracking (Thorsten Leemhuis) wrote:
>> On 03.05.23 04:31, Bagas Sanjaya wrote:
>>> On Tue, May 02, 2023 at 02:03:33PM -0700, Ben Greear wrote:
>>>>
>>>> Pulling today's upstream 6.3+ tree, my system now hangs loading initrd.
>>
>> Just to understand this properly: you mean after the boot loader said it
>> loaded the initramfs, not when the kernel starts using it?
> 
> I am bisecting...it appears to be .config related.  If I skip enabling 
> things
> during bisect, then I do not see the problem.  But I copied my original 
> buggy .config
> into an otherwise good kernel commit, and now it fails.  I'm manually 
> bisecting
> the .config settings....
> 
> Thanks,
> Ben
> 

Hello Ben,

(CCing Jens here)

I was facing same issue too. Surprising I did not hit the same on the
guest VM.

After bisecting, found that Reverting
[9f4107b07b17b5ee68af680150f91227bea2df6f] block: store 
bdev->bd_disk->fops->submit_bio state in bdev

Helped me to boot back the system. Can you please confirm

Thanks
- Raghu

>>
>>>>   Nothing useful is seen on
>>>> serial console after that.  This was working late last week.  Other 
>>>> older kernels boot OK, so
>>>> I think is is related to the kernel.
>>>
>>> What is your setup (especially kernel config)?
>>>
>>> Is v6.3 works for you? I haven't seen this regression on my computer
>>> using v6.3.
>>
>> Ben, you just to be sure might want to check if a kernel image that
>> currently works still boots if you regenerate its initramfs: maybe the
>> initramfs generator or something it uses changed recently and is causing
>> your problem. I've seen a case or two where that was the case.
>>
>>>> I have not yet started bisect, curious if this is already know problem.
>>> Certainly you should try bisection.
>>
>> Yeah.
>>
>> BTW: What kind of platform is this?
>>
>> Ciao, Thorsten
>>
>