From: Nathan Chancellor <nathan@kernel.org>
To: Klaus Kusche <klaus.kusche@computerix.info>
Cc: llvm@lists.linux.dev, Josh Poimboeuf <jpoimboe@kernel.org>,
peterz@infradead.org, linux-kernel@vger.kernel.org
Subject: Re: linux 7.0.4 + clang 22.1.5 with thin or full lto still fails with objtool error
Date: Fri, 15 May 2026 01:00:02 +0900 [thread overview]
Message-ID: <20260514160002.GA2229579@ax162> (raw)
In-Reply-To: <98f7c318-c571-4204-a4df-f70221ef8c39@computerix.info>
On Thu, May 07, 2026 at 09:31:36PM +0200, Klaus Kusche wrote:
>
> The error I reported for linux 7.0.3 and clang 22.1.4 (see below)
> still occurs with 7.0.4 and 22.1.5:
> Compiling the kernel fails in the "LD vmlinux.o" step with
> "vmlinux.o: error: objtool: bad .discard.annotate_insn entry:
> 599 of type 8"
>
> This time, I reproduced it with the vanilla kernel,
> not the gentoo kernel, so there is no gentoo involved in the build.
>
> It happens with both full LTO and thin LTO, only no LTO works.
>
> My kernel config reproducing the error with vanilla 7.0.4 is in
> https://bugzilla.kernel.org/show_bug.cgi?id=221460
Just to close the loop for other folks in this thread, this is now being
tracked in our downstream issue:
https://github.com/ClangBuiltLinux/linux/issues/2162
> -------- Forwarded Message --------
> Subject: 7.0.3 with clang 22.1.4 and full lto: objtool error
> Date: Mon, 4 May 2026 20:46:50 +0200
> From: Klaus Kusche <klaus.kusche@computerix.info>
> To: linux-kernel@vger.kernel.org, Josh Poimboeuf <jpoimboe@kernel.org>, peterz@infradead.org, Nathan Chancellor <nathan@kernel.org>
>
> Hello,
>
> with clang 22.1.4, I get an error in the "LD vmlinux.o" step
> (full lto):
> "objtool: bad .discard.annotate_insn entry: 609 of type 8"
>
> Same kernel & same config compiles and runs nicely with clang 21.1.8.
>
> I've attached the kernel config to
> https://bugzilla.kernel.org/show_bug.cgi?id=221460
>
--
Cheers,
Nathan
prev parent reply other threads:[~2026-05-14 16:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 18:46 7.0.3 with clang 22.1.4 and full lto: objtool error Klaus Kusche
2026-05-07 19:31 ` linux 7.0.4 + clang 22.1.5 with thin or full lto still fails with " Klaus Kusche
2026-05-14 16:00 ` Nathan Chancellor [this message]
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