linux-kernel - Re: [PATCH 5.4 00/23] 5.4.298-rc1 review

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Message-ID: <20250903172859.GB3288670@ax162>
Date: Wed, 3 Sep 2025 10:28:59 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>, stable@...r.kernel.org,
	patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
	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, jonathanh@...dia.com,
	f.fainelli@...il.com, sudipm.mukherjee@...il.com,
	srw@...dewatkins.net, rwarsow@....de, conor@...nel.org,
	hargar@...rosoft.com, broonie@...nel.org, achill@...ill.org,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Venkat Rao Bagalkote <venkat88@...ux.ibm.com>,
	clang-built-linux <llvm@...ts.linux.dev>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Ben Copeland <benjamin.copeland@...aro.org>,
	Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH 5.4 00/23] 5.4.298-rc1 review

On Wed, Sep 03, 2025 at 11:48:11AM +0200, Greg Kroah-Hartman wrote:
> On Wed, Sep 03, 2025 at 03:11:26PM +0530, Naresh Kamboju wrote:
> > Build regression: stable-rc 5.4.298-rc1 powerpc/boot/util.S:44: Error:
> > junk at end of line, first unrecognized character is `0'
> > 
> > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> Known issue, patch already submitted:
> 	https://lore.kernel.org/r/20250902235234.2046667-1-nathan@kernel.org
> 
> Will queue that up for the next round of releases, using clang-20 on
> 5.4.y is brave :)

Just for the record, there is nothing clang specific here, it is a
binutils problem. The clang-20 TuxMake containers just happen to have a
newer copy of binutils from Debian Trixie after [1]. I would expect one
of the updated GCC versions to reproduce the same issue, unless they
don't build 5.4 for other reasons. I always try to ensure every stable
version builds with latest clang so I would not consider it that brave
:)

I plan to send a v2 addressing Segher's comments later today.

[1]: https://gitlab.com/Linaro/tuxmake/-/commit/46280e20b8ed2df749e9115640271c0a6a2c812c

Cheers,
Nathan