linux-kernel - Re: v3.18.86 build: 0 failures 1 warnings (v3.18.86)

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Message-ID: <CAK8P3a31dpGBTbbpADqBgUOUAmbDAoDuJP1wuG_-iGcbXHyK5Q@mail.gmail.com>
Date:   Wed, 3 Jan 2018 16:32:35 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Mark Brown <broonie@...nel.org>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Kernel Build Reports Mailman List 
        <kernel-build-reports@...ts.linaro.org>,
        linaro-kernel@...ts.linaro.org,
        "# 3.18.x" <stable@...r.kernel.org>,
        Sasha Levin <alexander.levin@...izon.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: v3.18.86 build: 0 failures 1 warnings (v3.18.86)

On Wed, Jan 3, 2018 at 3:59 PM, Mark Brown <broonie@...nel.org> wrote:
> On Wed, Jan 03, 2018 at 03:52:12PM +0100, Arnd Bergmann wrote:
>
>> Greg and Mark, which x86-64 compiler versions do you use?
>
> gcc (Debian 6.3.0-18) 6.3.0 20170516

I installed that version here, same as my other gcc-6 versions, the
"-Wno-frame-address" option gets set and interpreted correctly:

$ git checkout v3.18.91 ; touch kernel/sched/core.c ; make V=1
defconfig kernel/sched/core.o CC=gcc-6 2>&1 | tail
...
gcc-6 -Wp,-MD,kernel/sched/.core.o.d  -nostdinc -isystem
/usr/lib/gcc/x86_64-linux-gnu/6/include -I./arch/x86/include
-Iarch/x86/include/generated  -Iinclude -I./arch/x86/include/uapi
-Iarch/x86/include/generated/uapi -I./include/uapi
-Iinclude/generated/uapi -include ./include/linux/kconfig.h
-D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
-fno-strict-aliasing -fno-common -Werror-implicit-function-declaration
-Wno-format-security -std=gnu89 -m64 -mno-80387 -mno-fp-ret-in-387
-mtune=generic -mno-red-zone -mcmodel=kernel -funit-at-a-time
-maccumulate-outgoing-args -DCONFIG_AS_CFI=1
-DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_CRC32=1 -DCONFIG_AS_AVX=1
-DCONFIG_AS_AVX2=1 -pipe -Wno-sign-compare
-fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow
-mno-avx -fno-delete-null-pointer-checks -Wno-frame-address -fno-PIE
-O2 --param=allow-store-data-races=0 -Wframe-larger-than=2048
-fno-stack-protector -Wno-unused-but-set-variable
-Wno-unused-const-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -fno-var-tracking-assignments
-Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow
-fno-stack-check -fconserve-stack -Werror=implicit-int
-Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO
-D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(core)"
-D"KBUILD_MODNAME=KBUILD_STR(core)" -c -o kernel/sched/core.o
kernel/sched/core.c

It might be a problem with different 'make' versions, or something else
in the environment that leads to "-Wno-frame-address" not being set
on the command line instead.

     Arnd