linux-kernel - Re: [Regression] depmod fails on kernel 6.17.1 rc1

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Message-ID: <2025110956-swaddling-chapter-5932@gregkh>
Date: Sun, 9 Nov 2025 09:49:29 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Stephen Rothwell <sfr@...hwell.id.au>
Cc: Jiri Slaby <jirislaby@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Alex Davis <alex47794@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Borislav Petkov <bp@...en8.de>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	John Ogness <john.ogness@...utronix.de>,
	linux-serial <linux-serial@...r.kernel.org>
Subject: Re: [Regression] depmod fails on kernel 6.17.1 rc1

On Sun, Nov 09, 2025 at 10:52:03AM +1100, Stephen Rothwell wrote:
> Hi Jiri,
> 
> On Fri, 7 Nov 2025 07:20:26 +0100 Jiri Slaby <jirislaby@...nel.org> wrote:
> >
> > On 06. 11. 25, 19:00, Ilpo Järvinen wrote:
> > > This seems to resolve the build issue for me:
> > > 
> > > --
> > > From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@...ux.intel.com>
> > > Subject: [PATCH 1/1] serial: 8250: Fix 8250_rsa symbol loop
> > > 
> > > make allmodconfig build fails due to dependency loop:
> > > 
> > >    depmod: ERROR: Cycle detected: 8250 -> 8250_base -> 8250
> > >    depmod: ERROR: Found 2 modules in dependency cycles!
> > > 
> > > Break dependency loop by moving 8250_rsa.o into 8250_base and by
> > > passing univ8250_port_base_ops to univ8250_rsa_support() that can make
> > > a local copy of it.
> > > 
> > > Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> > > Reported-by: Alex Davis <alex47794@...il.com>
> > > Fixes: b20d6576cdb3 ("serial: 8250: export RSA functions")
> > > Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>  
> > 
> > LGTM, thanks for the fix.
> > 
> > Reviewed-by: Jiri Slaby <jirislaby@...nel.org>
> > 
> > If the reporters could give it a shot and mark this by Tested-by, it would be great...
> 
> I have not seen this for quite some time ... I assumed it had been
> fixed.

I too thought this was fixed a while ago, what changed to cause this to
happen now?  Anyone have a .config to reproduce this, 'allmodconfig' on
x86 works for me.

greg k-h