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

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Message-ID: <CA+G9fYso1sBLRAMpc0bdPiim8GvMhmwuRDaEZ0xbP1TZz864ZA@mail.gmail.com>
Date:   Mon, 1 Nov 2021 18:30:15 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Juerg Haefliger <juergh@...onical.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>
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 <lkft@...aro.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