From 4dedcb1bb54cbbe8043c79ad733f966b6ffc6972 Mon Sep 17 00:00:00 2001 From: Mark Johnston Date: Sat, 27 Jan 2024 21:49:41 -0500 Subject: [PATCH] libc/amd64: Disable ASAN for amd64_archlevel.c The code in this file runs before the sanitizer can initialize its shadow map. Fixes: ad2fac552c3f ("lib/libc/amd64: add archlevel-based simd dispatch framework") --- lib/libc/amd64/string/Makefile.inc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/libc/amd64/string/Makefile.inc b/lib/libc/amd64/string/Makefile.inc index b1369841bc74..d5bb646c5c53 100644 --- a/lib/libc/amd64/string/Makefile.inc +++ b/lib/libc/amd64/string/Makefile.inc @@ -28,3 +28,9 @@ MDSRCS+= \ strspn.S \ timingsafe_bcmp.S \ timingsafe_memcmp.S + +.if ${MK_ASAN} != "no" +# Disable ASAN for amd64_archlevel.c since its code is executed before the +# sanitizer runtime can initialize itself. +CFLAGS.amd64_archlevel.c+= -fno-sanitize=address +.endif