linux-kernel - Re: [REGRESSION] Kernel booted via kexec fails to resume from hibernation

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Message-ID: <1A927798-F31C-49EE-8CE9-657FA6E72842@r-ricci.it>
Date: Fri, 17 Jan 2025 08:52:23 +0100
From: Roberto Ricci <io@...icci.it>
To: Baoquan He <bhe@...hat.com>
CC: Andrew Morton <akpm@...ux-foundation.org>, ebiederm@...ssion.com,
 rafael@...nel.org, pavel@....cz, ytcoode@...il.com,
 kexec@...ts.infradead.org, linux-pm@...r.kernel.org,
 regressions@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION] Kernel booted via kexec fails to resume from hibernation

On 17 January 2025 04:41:14 CET, Baoquan He <bhe@...hat.com> wrote:
>On 01/17/25 at 09:55am, Baoquan He wrote:
>> On 01/16/25 at 12:52pm, Roberto Ricci wrote:
>> > On 2025-01-15 Wed 13:00:52 +0100, Roberto Ricci wrote:
>> > > On 2025-01-15 Wed 12:04:10 +0800, Baoquan He wrote:
>> > > > On 01/14/25 at 02:16pm, Roberto Ricci wrote:
>> > > > > On 2025-01-13 Mon 22:28:48 +0100, Roberto Ricci wrote:
>> ...snip...
>> > Also, I can't reproduce with the default config (make defconfig),
>> > therefore something in my config (I already sent it) may play a role.
>> 
>> What I tried is defconfig on 6.13-rc7, let me try your config again.
>
>I tried your config on the latest kernel, reboot will fail during the
>new kernel bootup after newly built kernel was installed.
>
>I haven't compared your config with the defconfig to see their
>difference. Wondering where your config comes from.
>

(Re-sending as I forgot to add CC, sorry)

It's based on the config used by my distribution:
https://raw.githubusercontent.com/void-linux/void-packages/413356268680b477b42a4af9462b9bb49491ca19/srcpkgs/linux6.12/files/x86_64-dotconfig
I ran `make olddefconfig` and `make localmodconfig`, then
I made a few changes in nconfig, such as enabling KASAN
and UBSAN.

The kernels provided by the distribution, which have very
minimal patches, are affected as well.