sys/conf: Support building kasan with gcc on arm64
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Authored by andrew on Wed, May 22, 2:35 PM.

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Reviewers

brooks
imp
jhb

Summary

Remove -mllvm flags that don't exist in gcc
Set the shadow offset with -fasan-shadow-offset

This allows the arm64 GENERIC-KASAN kernel to build with gcc13.

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Repository

rG FreeBSD src repository

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Build Status

Buildable 58065
Build 54953: arc lint + arc unit

Event Timeline

andrew created this revision.Wed, May 22, 2:35 PM

Herald added subscribers: rgrimes, emaste, imp. · View Herald TranscriptWed, May 22, 2:35 PM

andrew requested review of this revision.Wed, May 22, 2:35 PM

Harbormaster completed remote builds in B57844: Diff 138922.Wed, May 22, 2:35 PM

andrew added a child revision: D45301: arm64: Disable outling atomics.Wed, May 22, 2:35 PM

andrew added reviewers: brooks, imp, jhb.Mon, Jun 3, 3:49 PM

I wonder if we want a CFLAGS_GEN=${CFLAGS:N-flto*:N-fno-common:N-fsanitize*:N-fno-sanitize*:N-fasan-shadow-offset*} or maybe a CFLAGS_NOSAN in kern.pre.mk so we're not having to remove arguments in so many places?

Rebase on D45498

Harbormaster completed remote builds in B58065: Diff 139508.Wed, Jun 5, 1:03 PM

andrew added a parent revision: D45498: sys/conf: Introduce NOSAN_CFLAGS and NOSAN_C.Wed, Jun 5, 1:03 PM

andrew edited the summary of this revision. (Show Details)Wed, Jun 5, 1:15 PM

brooks accepted this revision.Wed, Jun 5, 4:51 PM

This revision is now accepted and ready to land.Wed, Jun 5, 4:51 PM

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sys/

conf/

kern.pre.mk

10 lines

Diff 139508

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sys/conf: Support building kasan with gcc on arm64AcceptedPublicActions