Date: Sun, 10 Feb 2019 15:21:35 +0100 From: Michael Tuexen <tuexen@fh-muenster.de> To: Conrad Meyer <cem@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r343746 - head/sys/conf Message-ID: <5445FA8B-4A76-4202-A841-A15429AA9551@fh-muenster.de> In-Reply-To: <CAG6CVpWJt%2BPGjPLFMC0Y3RhWfcUgygvPr%2BGVn2ZK-nDJ=iD=1g@mail.gmail.com> References: <201902041655.x14GtOIr046072@repo.freebsd.org> <CAG6CVpUqFp-qAYoD0CSAz%2BGZf_gcchQ0BswgxhRcYq88VO1sow@mail.gmail.com> <6436189F-037C-4AB0-A59C-BE68A781FB30@fh-muenster.de> <CAG6CVpWJt%2BPGjPLFMC0Y3RhWfcUgygvPr%2BGVn2ZK-nDJ=iD=1g@mail.gmail.com>
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--Apple-Mail=_60DE9A44-99E7-40CE-8763-B0654CC2B7D3 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On 10. Feb 2019, at 09:38, Conrad Meyer <cem@FreeBSD.org> wrote: >=20 > Hi Michael, >=20 > I don't know. You can 'pkg install amd64-xtoolchain-gcc' and 'make > buildkernel KERNCONF=3DGENERIC CROSS_TOOLCHAIN=3Damd64-gcc' if you're > interested in trying it. Hi Conrad, thanks for the instructions. I tested the patch and it ends up in a system I can use. In particular the kcovtrace test program also runs. Best regards Michael >=20 > (I'm not sure enabling coverage globally in GENERIC is appropriate > even if it did not break boot =E2=80=94 it's usually expensive, and = while > GENERIC is already slow, that doesn't mean we can just make it 10x > slower.) >=20 > Best, > Conrad >=20 > On Sun, Feb 10, 2019 at 12:03 AM Michael Tuexen = <tuexen@fh-muenster.de> wrote: >>=20 >>> On 10. Feb 2019, at 08:50, Conrad Meyer <cem@FreeBSD.org> wrote: >>>=20 >>> Hi Andrew, >>>=20 >>> This makes it compile, but instead of a build failure the kernel is >>> broken hard at runtime in early boot with GCC < 8.1. E.g., >>> amd64-xtoolchain-gcc standard cross-toolchain is still on GCC 6.4.0. >>>=20 >>> HEAD GENERIC has been broken in one form or another for xtoolchain = GCC >>> since r343713 (Feb 3), so I'm going to go ahead and turn this option >>> off in GENERIC. Feel free to reenable when you've tested that it >>> works. >> Hi Conrad, >>=20 >> does https://reviews.freebsd.org/D19135 fix the issue you are = observing? >>=20 >> Best regards >> Michael >>>=20 >>> Best, >>> Conrad >>>=20 >>> On Mon, Feb 4, 2019 at 8:55 AM Andrew Turner <andrew@freebsd.org> = wrote: >>>>=20 >>>> Author: andrew >>>> Date: Mon Feb 4 16:55:24 2019 >>>> New Revision: 343746 >>>> URL: https://svnweb.freebsd.org/changeset/base/343746 >>>>=20 >>>> Log: >>>> Only enable trace-cmp on Clang and modern GCC. >>>>=20 >>>> It's was only added to GCC 8.1 so don't try to enable it for = earlier >>>> releases. >>>>=20 >>>> Reported by: lwhsu >>>> Sponsored by: DARPA, AFRL >>>>=20 >>>> Modified: >>>> head/sys/conf/files >>>> head/sys/conf/kern.pre.mk >>>>=20 >>>> Modified: head/sys/conf/files >>>> = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >>>> --- head/sys/conf/files Mon Feb 4 16:13:41 2019 (r343745) >>>> +++ head/sys/conf/files Mon Feb 4 16:55:24 2019 (r343746) >>>> @@ -3808,7 +3808,7 @@ kern/kern_idle.c standard >>>> kern/kern_intr.c standard >>>> kern/kern_jail.c standard >>>> kern/kern_kcov.c optional kcov \ >>>> - compile-with "${NORMAL_C} = -fno-sanitize-coverage=3Dtrace-pc,trace-cmp" >>>> + compile-with "${NORMAL_C} -fno-sanitize=3Dall" >>>> kern/kern_khelp.c standard >>>> kern/kern_kthread.c standard >>>> kern/kern_ktr.c optional ktr >>>>=20 >>>> Modified: head/sys/conf/kern.pre.mk >>>> = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D >>>> --- head/sys/conf/kern.pre.mk Mon Feb 4 16:13:41 2019 = (r343745) >>>> +++ head/sys/conf/kern.pre.mk Mon Feb 4 16:55:24 2019 = (r343746) >>>> @@ -120,7 +120,12 @@ SAN_CFLAGS+=3D -fsanitize=3Dundefined >>>>=20 >>>> COVERAGE_ENABLED!=3D grep COVERAGE opt_global.h || true ; echo >>>> .if !empty(COVERAGE_ENABLED) >>>> +.if ${COMPILER_TYPE} =3D=3D "clang" || \ >>>> + (${COMPILER_TYPE} =3D=3D "gcc" && ${COMPILER_VERSION} >=3D = 80100) >>>> SAN_CFLAGS+=3D -fsanitize-coverage=3Dtrace-pc,trace-cmp >>>> +.else >>>> +SAN_CFLAGS+=3D -fsanitize-coverage=3Dtrace-pc >>>> +.endif >>>> .endif >>>>=20 >>>> CFLAGS+=3D ${SAN_CFLAGS} >>>>=20 >>>=20 >>=20 --Apple-Mail=_60DE9A44-99E7-40CE-8763-B0654CC2B7D3 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEJAw ggTVMIIDvaADAgECAghQTsb1PRG0ZDANBgkqhkiG9w0BAQsFADBxMQswCQYDVQQGEwJERTEcMBoG A1UEChMTRGV1dHNjaGUgVGVsZWtvbSBBRzEfMB0GA1UECxMWVC1UZWxlU2VjIFRydXN0IENlbnRl 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