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

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Message-ID: <aJu3bEAge1uOO8wO@example.org>
Date: Tue, 12 Aug 2025 23:51:40 +0200
From: Alexey Gladkov <legion@...nel.org>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Masahiro Yamada <masahiroy@...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

On Tue, Aug 05, 2025 at 01:33:49PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> On Tue, 5 Aug 2025 08:17:49 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > On Mon, 4 Aug 2025 09:09:19 +0200 Alexey Gladkov <legion@...nel.org> wrote:
> > >
> > > On Mon, Aug 04, 2025 at 11:25:40AM +1000, Stephen Rothwell wrote:  
> > > > 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.    
> > > 
> > > I do not have my tree. Can you apply my fix for original commit instead of
> > > revert ?
> > > 
> > > https://lore.kernel.org/all/20250730090025.2402129-1-legion@kernel.org/  
> > 
> > I did wonder why this patch has not been applied to the kbuild tree?
> > 
> > I will apply that today to the linux-next merge, but it is presumably
> > delaying the kbuild tree being merged by Linus ...
> 
> Tested-by: Stephen Rothwell <sfr@...b.auug.org.au> # build test

I noticed that this patchset is not in the tree. I somehow missed when and
why it was excluded. I thought I had submitted a fix and it had been
accepted.

Do I need to resend it to the mailing list?

-- 
Rgrds, legion


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