[next] Error: selected processor does not support `isb ' in ARM mode

[next] Error: selected processor does not support `isb ' in ARM mode

[Naresh Kamboju]

[Please ignore this email report if it is already reported]

Regression found on arm gcc-11 built with following config
Following build warnings / errors reported on linux next-20211101.

metadata:
    git_describe: next-20211101
    git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
    git_short_log: 9febf1194306 (\"Add linux-next specific files for 20211101\")
    target_arch: arm
    toolchain: gcc-11

build error :
--------------
/tmp/ccyCNFmn.s: Assembler messages:
/tmp/ccyCNFmn.s:1114: Error: selected processor does not support `isb
' in ARM mode
/tmp/ccyCNFmn.s:2033: Error: selected processor does not support `isb
' in ARM mode
make[3]: *** [/builds/linux/scripts/Makefile.build:288:
arch/arm/vfp/vfpmodule.o] Error 1
/tmp/ccy2h2RX.s: Assembler messages:
/tmp/ccy2h2RX.s:387: Error: selected processor does not support `dsb
st' in ARM mode
/tmp/ccy2h2RX.s:466: Error: selected processor does not support `dsb
st' in ARM mode
/tmp/ccy2h2RX.s:505: Error: selected processor does not support `dsb
ishst' in ARM mode
/tmp/ccy2h2RX.s:509: Error: selected processor does not support `sev'
in ARM mode
/tmp/ccy2h2RX.s:524: Error: selected processor does not support `dsb '
in ARM mode
/tmp/ccy2h2RX.s:556: Error: selected processor does not support `dsb
st' in ARM mode
/tmp/ccy2h2RX.s:599: Error: selected processor does not support `dsb
st' in ARM mode
make[2]: *** [/builds/linux/scripts/Makefile.build:288:
arch/arm/mach-actions/platsmp.o] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [/builds/linux/Makefile:1993: arch/arm/mach-actions] Error 2


Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>

build link:
-----------
https://builds.tuxbuild.com/20JSORlPpF83BDZzJEvnIbuof6E/

build config:
-------------
https://builds.tuxbuild.com/20JSORlPpF83BDZzJEvnIbuof6E/config

steps to reproduce:
--------------------
https://builds.tuxbuild.com/20JSORlPpF83BDZzJEvnIbuof6E/tuxmake_reproducer.sh

--
Linaro LKFT
https://lkft.linaro.org

Re: [next] Error: selected processor does not support `isb ' in ARM mode

[Arnd Bergmann]

On Mon, Nov 1, 2021 at 2:00 PM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> [Please ignore this email report if it is already reported]
>
> Regression found on arm gcc-11 built with following config
> Following build warnings / errors reported on linux next-20211101.
>
> metadata:
>     git_describe: next-20211101
>     git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>     git_short_log: 9febf1194306 (\"Add linux-next specific files for 20211101\")
>     target_arch: arm
>     toolchain: gcc-11

Is this a Debian gcc? If so, this one should fix it, I need to send
that to Russell's
patch tracker:

https://lore.kernel.org/linux-arm-kernel/20211018140735.3714254-1-arnd@kernel.org/

      Arnd

Re: [next] Error: selected processor does not support `isb ' in ARM mode

[Naresh Kamboju]

Hi Arnd,

On Mon, 1 Nov 2021 at 18:44, Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Mon, Nov 1, 2021 at 2:00 PM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> >
> > [Please ignore this email report if it is already reported]
> >
> > Regression found on arm gcc-11 built with following config
> > Following build warnings / errors reported on linux next-20211101.
> >
> > metadata:
> >     git_describe: next-20211101
> >     git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> >     git_short_log: 9febf1194306 (\"Add linux-next specific files for 20211101\")
> >     target_arch: arm
> >     toolchain: gcc-11
>
> Is this a Debian gcc? If so, this one should fix it, I need to send
> that to Russell's
> patch tracker:
>
> https://lore.kernel.org/linux-arm-kernel/20211018140735.3714254-1-arnd@kernel.org/
>

Yes.
This is Debian gcc-11

- Naresh