linux-kernel - Re: v6.14-12245-g91e5bfe317d8: Boot regression: rk3399-rock-pi-4b dragonboard-410c dragonboard-845c no console output

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Message-ID: <CA+G9fYv=jUunRgUs=ROptP4p5DNxUuUHxYsnWaxUUXbiwdszsA@mail.gmail.com>
Date: Fri, 11 Apr 2025 00:49:17 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: Nathan Chancellor <nathan@...nel.org>
Cc: open list <linux-kernel@...r.kernel.org>, 
	Linux ARM <linux-arm-kernel@...ts.infradead.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>, clang-built-linux <llvm@...ts.linux.dev>, 
	Arnd Bergmann <arnd@...db.de>, Ard Biesheuvel <ardb@...nel.org>, 
	Dan Carpenter <dan.carpenter@...aro.org>, Anders Roxell <anders.roxell@...aro.org>, 
	Kees Cook <keescook@...omium.org>
Subject: Re: v6.14-12245-g91e5bfe317d8: Boot regression: rk3399-rock-pi-4b
 dragonboard-410c dragonboard-845c no console output

On Sat, 5 Apr 2025 at 05:58, Nathan Chancellor <nathan@...nel.org> wrote:
>
> On Thu, Apr 03, 2025 at 04:17:44PM +0530, Naresh Kamboju wrote:
> > I’ve re-run the tests to validate the boot behavior on the Rock Pi 4 board
> > with different Clang nightly versions and the latest mainline kernel.
> >
> > The combination using clang-nightly:20250319 successfully booted the
> > Rock Pi 4 board.
> > However, the combination using clang-nightly:20250401 failed to boot
> > the same board.
> >
> > "name": "clang",
> > "version": "21.0.0",
> > "version_full": "Debian clang version 21.0.0
> > (++20250401112529+290d7b82cb5d-1~exp1~20250401112547.1360)"
> >
> > Reference:
> >  - https://lkft.validation.linaro.org/scheduler/job/8196258
> >  - https://lkft.validation.linaro.org/scheduler/job/8196275
>
> Thank you for verifying. Do you test with clang-20 and if so, are tests
> at that same revision passing? I want to make sure this is an LLVM
> regression before trying to get into figuring out how to bisect with
> your setup. Another way to do that is to see if clang-nightly boots are
> failing on the stable branches, which would point to Linux not being at
> fault.

clang-nightly boot failed with stable-rc 6.12, 6.13 and 6.14 and
mainline and next on following devices and virtual platforms.
- dragonboard-410c
- dragonboard-845c
- rk3399-rock-pi-4b
- Juno-r2
- e850-96
- FVP (Fast Models Fixed Virtual Platforms)

Boot Test links,
- https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.12.y/build/v6.12.23-2-g8e0839d16957/testrun/28076019/suite/boot/test/clang-nightly-lkftconfig-kselftest/history/
- https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.12.y/build/v6.12.23-2-g8e0839d16957/testrun/28076006/suite/boot/test/clang-nightly-lkftconfig-lto-thing/history/
-  https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.12.y/build/v6.12.23-2-g8e0839d16957/testrun/28076009/suite/boot/test/clang-nightly-lkftconfig-hardening/history/


Lore link,
 - https://lore.kernel.org/all/CA+G9fYve7+nXJNoV48TksXoMeVjgJuP8Gs=+1br+Qur1DPWV4A@mail.gmail.com/

>
> Cheers,
> Nathan