Messages in this thread Patch in this message | | | From | Raphael Gault <> | Subject | [RFC v4 16/18] arm64: crypto: Add exceptions for crypto object to prevent stack analysis | Date | Fri, 16 Aug 2019 13:24:01 +0100 |
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Some crypto modules contain `.word` of data in the .text section. Since objtool can't make the distinction between data and incorrect instruction, it gives a warning about the instruction beeing unknown and stops the analysis of the object file.
The exception can be removed if the data are moved to another section or if objtool is tweaked to handle this particular case.
Signed-off-by: Raphael Gault <raphael.gault@arm.com> --- arch/arm64/crypto/Makefile | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/crypto/Makefile b/arch/arm64/crypto/Makefile index 0435f2a0610e..e2a25919ebaa 100644 --- a/arch/arm64/crypto/Makefile +++ b/arch/arm64/crypto/Makefile @@ -43,9 +43,11 @@ aes-neon-blk-y := aes-glue-neon.o aes-neon.o obj-$(CONFIG_CRYPTO_SHA256_ARM64) += sha256-arm64.o sha256-arm64-y := sha256-glue.o sha256-core.o +OBJECT_FILES_NON_STANDARD_sha256-core.o := y obj-$(CONFIG_CRYPTO_SHA512_ARM64) += sha512-arm64.o sha512-arm64-y := sha512-glue.o sha512-core.o +OBJECT_FILES_NON_STANDARD_sha512-core.o := y obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o chacha-neon-y := chacha-neon-core.o chacha-neon-glue.o @@ -58,6 +60,7 @@ aes-arm64-y := aes-cipher-core.o aes-cipher-glue.o obj-$(CONFIG_CRYPTO_AES_ARM64_BS) += aes-neon-bs.o aes-neon-bs-y := aes-neonbs-core.o aes-neonbs-glue.o +OBJECT_FILES_NON_STANDARD_aes-neonbs-core.o := y CFLAGS_aes-glue-ce.o := -DUSE_V8_CRYPTO_EXTENSIONS -- 2.17.1
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