Re: [REGRESSION][BISECTED] Boot stall from merge tag 'net-next-6.2'

From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: regressions@leemhuis.info, Ard Biesheuvel <ardb@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	 Linux Stable <stable@vger.kernel.org>,
	Linux Regressions <regressions@lists.linux.dev>,
	 Bagas Sanjaya <bagasdotme@gmail.com>,
	Sami Korkalainen <sami.korkalainen@proton.me>
Subject: Re: [REGRESSION][BISECTED] Boot stall from merge tag 'net-next-6.2'
Date: Wed, 21 Jun 2023 19:57:30 +0200	[thread overview]
Message-ID: <CAHmME9p2ZLJUMq96vhkiSgvJkxP5BxE778MhY5Ou2WdxLVEJyg@mail.gmail.com> (raw)
In-Reply-To: <9517bb70-426c-0296-b426-f5b4f075f7c8@leemhuis.info>

+Ard - any ideas here?

On Wed, Jun 21, 2023 at 10:46 AM Linux regression tracking (Thorsten
Leemhuis) <regressions@leemhuis.info> wrote:
>
> [added Jason (who authored the culprit) to the list of recipients; moved
> net people and list to BCC, guess they are not much interested in this
> anymore then]
>
> On 21.06.23 08:07, Sami Korkalainen wrote:
> > I bisected again. It seems I made some mistake last time, as I got a
> > different result this time. Maybe, because these problematic kernels may
> > boot fine sometimes, like I said before.
> >
> > Anyway, first bad commit (makes much more sense this time):
> > e7b813b32a42a3a6281a4fd9ae7700a0257c1d50 efi: random: refresh
> > non-volatile random seed when RNG is initialized
> >
> > I confirmed that this is the code causing the issue by commenting it
> > out (see the patch file). Without this code, the latest mainline boots fine.
>
> Jason, in that case it seems this is something for you. For the initial
> report, see here:
>
> https://lore.kernel.org/all/GQUnKz2al3yke5mB2i1kp3SzNHjK8vi6KJEh7rnLrOQ24OrlljeCyeWveLW9pICEmB9Qc8PKdNt3w1t_g3-Uvxq1l8Wj67PpoMeWDoH8PKk=@proton.me/
>
> Quoting a part of it:
>
> ```
> Linux 6.2 and newer are (mostly) unbootable on my old HP 6730b laptop,
> the 6.1.30 works still fine.
> The weirdest thing is that newer kernels (like 6.3.4 and 6.4-rc3) may
> boot ok on the first try, but when rebooting, the very same version
> doesn't boot.
>
> Some times, when trying to boot, I get this message repeated forever:
> ACPI Error: No handler or method for GPE [XX], disabling event
> (20221020/evgpe-839)
> On newer kernels, the date is 20230331 instead of 20221020. There is
> also some other error, but I can't read it as it gets overwritten by the
> other ACPI error, see image linked at the end.
>
> And some times, the screen will just stay completely blank.
>
> I tried booting with acpi=off, but it does not help.
> ```
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> --
> Everything you wanna know about Linux kernel regression tracking:
> https://linux-regtracking.leemhuis.info/about/#tldr
> If I did something stupid, please tell me, as explained on that page.
>
> #regzbot introduced e7b813b32a42a3a6281a4fd9ae7700a0257c1d50