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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue, 5 Jul 2022 09:39:51 -0700
Message-ID: <CAHk-=wivGGgs9K_TfQYTW4RzH_C-JVfLZKNA5+hKQU0eNFBeiw@mail.gmail.com>
Subject: Re: [Regression?] Linux 5.19-rc5 gets stuck on boot, not rc4
To:     Tor Vic <torvic9@mailbox.org>
Cc:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        platform-driver-x86@vger.kernel.org,
        Hans de Goede <hdegoede@redhat.com>,
        Jani Nikula <jani.nikula@intel.com>
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On Tue, Jul 5, 2022 at 6:50 AM <torvic9@mailbox.org> wrote:
>
> Linux 5.19-rc5 does not boot on my Kaby Lake Thinkpad.
> rc3 and rc4 were still fine, so I guess something between rc4 and rc5
> introduced a regression.

Sounds that way.

> Unfortunately, there are no errors or warning messages.
> It gets stuck quite early on boot, about the time USB is initialized,
> so less than 1 second into post-bootloader boot.
> It then just sits there doing nothing - SysRq still works though.

There aren't all that many changes in rc5, and your hardware looks
*very* standard (all intel chipset, and a Samsung SM961 SSD).

And with the lack of details, we'll either need a bisect:

> I don't have time for a bisect, but I thought I'll let you know about
> this issue, and maybe someone already has an idea.

or we'll need more reports..

> Some system information below. Root filesystem is f2fs.

Ok, f2fs is certainly unusual, but there are no f2fs changes in rc5.

There's some PM changes for i915 ("drm/i915/dgfx: Disable d3cold at
gfx root port") and a couple of thinkpad-acpi platform driver updates,
so I'm adding a few random people to the cc in case somebody goes
"ahh..."

But otherwise I think we'll just need more reports or info to even
start guessing.

              Linus