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

Naresh Kamboju
2021-06-24T06:13:38Z

Hi Marcin,

On Thu, 24 Jun 2021 at 07:59, Nathan Chancellor <nathan@kernel.org> wrote:
>
> On Thu, Jun 24, 2021 at 12:46:48AM +0200, Marcin Wojtas wrote:
> > Hi Stephen,
> >
> > czw., 24 cze 2021 o 00:29 Stephen Rothwell <sfr@canb.auug.org.au> napisał(a):
> > >
> > > Hi all,
> > >
> > > Today's linux-next build (x86_64 modules_install) failed like this:
> > >
> > > depmod: ../tools/depmod.c:1792: depmod_report_cycles_from_root: Assertion `is < stack_size' failed.

LKFT test farm found this build error.

Regressions found on mips:

- build/gcc-9-malta_defconfig
- build/gcc-10-malta_defconfig
- build/gcc-8-malta_defconfig

depmod: ERROR: Cycle detected: fwnode_mdio -> of_mdio -> fwnode_mdio
depmod: ERROR: Found 2 modules in dependency cycles!
make[1]: *** [/builds/linux/Makefile:1875: modules_install] Error 1

> > Thank you for letting us know. Not sure if related, but I just found
> > out that this code won't compile for the !CONFIG_FWNODE_MDIO. Below
> > one-liner fixes it:
> >
> > --- a/include/linux/fwnode_mdio.h
> > +++ b/include/linux/fwnode_mdio.h
> > @@ -40,7 +40,7 @@ static inline int fwnode_mdiobus_register(struct mii_bus *bus,
> > * This way, we don't have to keep compat bits around in drivers.
> > */
> >
> > - return mdiobus_register(mdio);
> > + return mdiobus_register(bus);
> > }
> > #endif
> >
> > I'm curious if this is the case. Tomorrow I'll resubmit with above, so
> > I'd appreciate recheck.

This proposed fix did not work.

> Reverting all the patches in that series fixes the issue for me.

Yes.
Reverting all the (6) patches in that series fixed this build problem.

git log --oneline | head
3752a7bfe73e Revert "Documentation: ACPI: DSD: describe additional MAC
configuration"
da53528ed548 Revert "net: mdiobus: Introduce fwnode_mdbiobus_register()"
479b72ae8b68 Revert "net/fsl: switch to fwnode_mdiobus_register"
92f85677aff4 Revert "net: mvmdio: add ACPI support"
3d725ff0f271 Revert "net: mvpp2: enable using phylink with ACPI"
ffa8c267d44e Revert "net: mvpp2: remove unused 'has_phy' field"
d61c8b66c840 Add linux-next specific files for 20210623

steps to reproduce, config and build log located here in this link,
https://builds.tuxbuild.com/1uNjGjPUAI4XwwcwKFr5FUxkwzy/

# TuxMake is a command line tool and Python library that provides
# portable and repeatable Linux kernel builds across a variety of
# architectures, toolchains, kernel configurations, and make targets.
#
# TuxMake supports the concept of runtimes.
# See https://docs.tuxmake.org/runtimes/, for that to work it requires
# that you install podman or docker on your system.
#
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake
#
# See https://docs.tuxmake.org/ for complete documentation.

tuxmake --runtime podman --target-arch mips --toolchain gcc-10
--kconfig malta_defconfig

- Naresh