From mboxrd@z Thu Jan  1 00:00:00 1970
Content-Type: multipart/mixed; boundary="===============6393875519744116764=="
MIME-Version: 1.0
From: Philip Li <philip.li@intel.com>
To: kbuild-all@lists.01.org
Subject: Re: [linux-stable-rc:linux-4.19.y 9916/9999] drivers/pinctrl/pinctrl-ingenic.o: warning: objtool: ingenic_pinconf_group_get()+0x12: unsupported stack pointer realignment
Date: Wed, 08 Apr 2020 07:30:37 +0800
Message-ID: <20200407233037.GC13869@intel.com>
In-Reply-To: <CAKwvOd=fsR9XE1j6pVi=7Ncb6Mbz9nvdUQxkA=FQHxMNWU3GVw@mail.gmail.com>
List-Id: <oe-kbuild-all.lists.linux.dev>

--===============6393875519744116764==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

On Tue, Apr 07, 2020 at 10:51:38AM -0700, Nick Desaulniers wrote:
> On Tue, Apr 7, 2020 at 9:11 AM kbuild test robot <lkp@intel.com> wrote:
> >
> > Hi Dirk,
> >
> > First bad commit (maybe !=3D root cause):
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-st=
able-rc.git linux-4.19.y
> > head:   6e19c6f2d2653aebd7d307ec43293f579e21604f
> > commit: 621f2ded601546119fabccd1651b1ae29d26cd38 [9916/9999] scripts/dt=
c: Remove redundant YYLOC global declaration
> > config: x86_64-randconfig-d003-20200407 (attached as .config)
> > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 31=
85881d69022e03b300e189838b0599ed417be5)
> > reproduce:
> >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/s=
bin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         git checkout 621f2ded601546119fabccd1651b1ae29d26cd38
> >         # save the attached .config to linux build tree
> >         COMPILER=3Dclang make.cross ARCH=3Dx86_64
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kbuild test robot <lkp@intel.com>
> >
> > All warnings (new ones prefixed by >>):
> >
> > >> drivers/pinctrl/pinctrl-ingenic.o: warning: objtool: ingenic_pinconf=
_group_get()+0x12: unsupported stack pointer realignment
> > >> drivers/pinctrl/pinctrl-ingenic.o: warning: objtool: ingenic_pinconf=
_group_get()+0x0: stack state mismatch: cfa1=3D7+136 cfa2=3D7+8
> =

> Apologies that the bot keeps converging on this patch; it's not the
> source of the regression.  The build was red with ToT LLVM before this
> patch landed; after the patch landed this warning seemed new, so the
> bot converged its bisection on this commit.
Sorry for the false positive bisection, we will think of this further.
Hi Nick, do you think the bot need blacklist this or send similar objtool
to clang mailing list only?

> =

> Also, we recently turned on Clang builds for 0day bot, so it's digging
> up interesting bugs via randconfig testing.  This is useful and we
> appreciate the reports, especially ones from objtool frequently find
> compiler bugs.
> =

> I've filed https://github.com/ClangBuiltLinux/linux/issues/977 for me
> to follow up on.
> =

> -- =

> Thanks,
> ~Nick Desaulniers
> _______________________________________________
> kbuild-all mailing list -- kbuild-all(a)lists.01.org
> To unsubscribe send an email to kbuild-all-leave(a)lists.01.org
--===============6393875519744116764==--