2021-11-01 13:05:05

by Naresh Kamboju

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

[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 <[email protected]>

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

2021-11-01 13:17:42

by Arnd Bergmann

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

On Mon, Nov 1, 2021 at 2:00 PM Naresh Kamboju <[email protected]> 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/[email protected]/

Arnd

2021-11-01 13:24:16

by Naresh Kamboju

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

Hi Arnd,

On Mon, 1 Nov 2021 at 18:44, Arnd Bergmann <[email protected]> wrote:
>
> On Mon, Nov 1, 2021 at 2:00 PM Naresh Kamboju <[email protected]> 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/[email protected]/
>

Yes.
This is Debian gcc-11

- Naresh