linux-kernel - Re: linux-next: build failure after merge of Linus' tree

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Message-ID: <CAH5fLgjRVZA3Gmb7Ogs+Y65T38EpNVeVEqmg93ZB4dn0Y7J3aA@mail.gmail.com>
Date: Thu, 26 Sep 2024 09:36:56 +0200
From: Alice Ryhl <aliceryhl@...gle.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Matthew Maurer <mmaurer@...gle.com>, 
	Sami Tolvanen <samitolvanen@...gle.com>, Gatlin Newhouse <gatlin.newhouse@...il.com>, 
	Kees Cook <kees@...nel.org>, "Peter Zijlstra (Intel)" <peterz@...radead.org>, Miguel Ojeda <ojeda@...nel.org>, 
	Andrey Konovalov <andreyknvl@...il.com>, Marco Elver <elver@...gle.com>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of Linus' tree

On Thu, Sep 26, 2024 at 2:04 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging Linus' tree, today's linux-next build (x86_64
> allmodconfig) failed (very quickly) like this:
>
> error: unknown unstable option: `patchable-function-entry`
>
> Presumably exposed by commit
>
>   1f9c4a996756 ("Kbuild: make MODVERSIONS support depend on not being a compile test build")
>
> Which allowed the rust parts of the build to happen in my x86_64
> allmodconfig build.
>
> This is a cross build on a PowerPC LE host.
>
> $ rustc --version
> rustc 1.80.1
> $ x86_64-linux-gnu-gcc --version
> x86_64-linux-gnu-gcc (Debian 14.2.0-1) 14.2.0
>
> I have reverted these commits for today:
>
>   a2f115470520 ("kasan: rust: Add KASAN smoke test via UAF")
>   e3117404b411 ("kbuild: rust: Enable KASAN support")
>   f64e2f3a66e3 ("rust: kasan: Rust does not support KHWASAN")
>   c42297438aee ("kbuild: rust: Define probing macros for rustc")
>   cc1d98f9fe30 ("kasan: simplify and clarify Makefile")
>   ca627e636551 ("rust: cfi: add support for CFI_CLANG with Rust")
>
> Basically for the latter one (as a guess).
>
> And the build works.

Sorry about that! The fix is here:
https://lore.kernel.org/all/20240925141944.277936-1-ojeda@kernel.org/

Alice