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Thu, 16 Mar 2023 15:47:15 -0700 (PDT) Date: Thu, 16 Mar 2023 23:47:04 +0100 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.0.rc1.284.g88254d51c5-goog Message-ID: <20230316224705.709984-1-elver@google.com> Subject: [PATCH 1/2] kfence: avoid passing -g for test From: Marco Elver To: elver@google.com, Andrew Morton Cc: Alexander Potapenko , Dmitry Vyukov , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Nathan Chancellor X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D3BE34001B X-Stat-Signature: u4h5dwfp8f5stk78b7aqrb7t4xac7owa X-HE-Tag: 1679006836-224852 X-HE-Meta: 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 OEYhR/5C 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Nathan reported that when building with GNU as and a version of clang that defaults to DWARF5: $ make -skj"$(nproc)" ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- \ LLVM=1 LLVM_IAS=0 O=build \ mrproper allmodconfig mm/kfence/kfence_test.o /tmp/kfence_test-08a0a0.s: Assembler messages: /tmp/kfence_test-08a0a0.s:14627: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14628: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14632: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14633: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14639: Error: non-constant .uleb128 is not supported ... This is because `-g` defaults to the compiler debug info default. If the assembler does not support some of the directives used, the above errors occur. To fix, remove the explicit passing of `-g`. All the test wants is that stack traces print valid function names, and debug info is not required for that. (I currently cannot recall why I added the explicit `-g`.) Fixes: bc8fbc5f305a ("kfence: add test suite") Reported-by: Nathan Chancellor Signed-off-by: Marco Elver --- mm/kfence/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kfence/Makefile b/mm/kfence/Makefile index 0bb95728a784..2de2a58d11a1 100644 --- a/mm/kfence/Makefile +++ b/mm/kfence/Makefile @@ -2,5 +2,5 @@ obj-y := core.o report.o -CFLAGS_kfence_test.o := -g -fno-omit-frame-pointer -fno-optimize-sibling-calls +CFLAGS_kfence_test.o := -fno-omit-frame-pointer -fno-optimize-sibling-calls obj-$(CONFIG_KFENCE_KUNIT_TEST) += kfence_test.o