linux-kernel - Re: [PATCH 6.1 00/71] 6.1.82-rc1 review

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Date: Wed, 13 Mar 2024 22:27:21 +0100
From: Mateusz Jończyk <mat.jonczyk@...pl>
To: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
 linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
 lkft-triage@...ts.linaro.org, pavel@...x.de
Subject: Re: [PATCH 6.1 00/71] 6.1.82-rc1 review

W dniu 13.03.2024 o 21:13, Mateusz Jończyk pisze:
> W dniu 13.03.2024 o 17:38, Sasha Levin pisze:
>> This is the start of the stable review cycle for the 6.1.82 release.
>> There are 71 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 Mar 15 04:39:56 PM UTC 2024.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-6.1.y&id2=v6.1.81
>> 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,
>> Sasha
>>
> Hello,
>
> Kernel hangs during early boot. No console messages, nothing in pstore.
>
> Tested on a HP 17-by0001nw laptop with an Intel Kaby Lake CPU (Intel i3-7020U) and Ubuntu 20.04.
>
> This CPU is not affected by RFDS (at least according to the Kconfig message), so I have set
>
> CONFIG_MITIGATION_RFDS=n
>
> in Kconfig. I do not have any updated microcode (if any will be provided at all for this CPU).
>
> Greetings,
>
> Mateusz
>
I have tested with the following patches reverted:

                [PATCH 6.1 43/71] x86/mmio: Disable KVM mitigation when X86_FEATURE_CLEAR_CPU_BUF is set
                [PATCH 6.1 44/71] Documentation/hw-vuln: Add documentation for RFDS
                [PATCH 6.1 45/71] x86/rfds: Mitigate Register File Data Sampling (RFDS)
                [PATCH 6.1 46/71] KVM/x86: Export RFDS_NO and RFDS_CLEAR to guests

and the kernel still doesn't boot.

I have realized that in Kconfig, I have CONFIG_DEBUG_PREEMPT enabled for some weird reason.
I alsa have CONFIG_EARLY_PRINTK_USB_XDBC=y, which may cause error messages not to
appear on screen (according to Kconfig description). Will test with both options disabled.

Greetings,

Mateusz