linux-kernel - Re: linux-next: build failure after merge of the kbuild tree

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Message-ID: <20250804112540.6b8ed4b9@canb.auug.org.au>
Date: Mon, 4 Aug 2025 11:25:40 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Alexey Gladkov <legion@...nel.org>, 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 the kbuild tree

Hi all,

On Wed, 30 Jul 2025 16:12:23 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the kbuild tree, today's linux-next build (i386 defconfig)
> failed like this:
> 
> ld: .vmlinux.export.o: in function `__ksymtab___builtin_memcmp':
> .vmlinux.export.c:(___ksymtab+__builtin_memcmp+0x0): undefined reference to `__builtin_memcmp'
> 
> Caused by commit
> 
>   c4b487ddc51f ("modpost: Create modalias for builtin modules")
> 
> I have reverted that commit, along with its parent and child, for
> today.  It's parent commit
> 
>   66ef3890c628 ("modpost: Add modname to mod_device_table alias")
> 
> generated this warning in the i386 defconfig build:
> 
> scripts/mod/file2alias.c: In function ‘handle_moddevtable’:
> scripts/mod/file2alias.c:1480:25: warning: variable ‘modnamelen’ set but not used [-Wunused-but-set-variable]
>  1480 |         size_t typelen, modnamelen;
>       |                         ^~~~~~~~~~

I am still reverting those commits.

-- 
Cheers,
Stephen Rothwell

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