Date: Sun, 7 Apr 2024 18:00:21 GMT From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: b811dac2115a - main - Fix GENERIC-KASAN kernel build for amd64 Message-ID: <202404071800.437I0L83037790@gitrepo.freebsd.org>
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The branch main has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=b811dac2115a6ada606c03d7d823a95d11c5f3c9 commit b811dac2115a6ada606c03d7d823a95d11c5f3c9 Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2024-04-07 17:56:03 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2024-04-07 17:58:52 +0000 Fix GENERIC-KASAN kernel build for amd64 Work around https://github.com/llvm/llvm-project/issues/87923, which leads to an assertion failure compiling several kernel source files with asan enabled. PR: 276104 MFC after: 1 month --- sys/conf/kern.pre.mk | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk index 6bf647f5c3ea..567c68e5887e 100644 --- a/sys/conf/kern.pre.mk +++ b/sys/conf/kern.pre.mk @@ -111,6 +111,11 @@ SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \ # upstreamed similar to: https://reviews.llvm.org/D98285 # SAN_CFLAGS+= -mllvm -asan-mapping-offset=0xdfff208000000000 +.elif ${MACHINE_CPUARCH} == "amd64" && \ + ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000 +# Work around https://github.com/llvm/llvm-project/issues/87923, which leads to +# an assertion failure compiling dtrace.c with asan enabled. +SAN_CFLAGS+= -mllvm -asan-use-stack-safety=0 .endif .endif
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