Messages in this thread | | | From | Arnd Bergmann <> | Date | Wed, 6 May 2020 16:07:25 +0200 | Subject | objtool warning breaks build for fs/dlm/lock.o |
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Hi,
During randconfig testing with clang-10 I came across a number of additional objtool warnings, I'll send another mail about those when I have collected more information and some object files.
This one sticks out however, as objtool returns an error code that stops the build:
$ make V=1 2>&1 | tail clang-10 -Wp,-MMD,fs/dlm/.lock.o.d -nostdinc -isystem /usr/lib/llvm-10/lib/clang/10.0.1/include -I/git/arm-soc/arch/x86/include -I./arch/x86/include/generated -I/git/arm-soc/include -I./include -I/git/arm-soc/arch/x86/include/uapi -I./arch/x86/include/generated/uapi -I/git/arm-soc/include/uapi -I./include/generated/uapi -include /git/arm-soc/include/linux/kconfig.h -include /git/arm-soc/include/linux/compiler_types.h -D__KERNEL__ -Wall -Wundef -Werror=strict-prototypes -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -std=gnu89 --target=x86_64-linux --prefix=/home/arnd/cross/x86_64/gcc-10.0.20200413-nolibc/x86_64-linux/bin/ --gcc-toolchain=/home/arnd/cross/x86_64/gcc-10.0.20200413-nolibc/x86_64-linux -no-integrated-as -Werror=unknown-warning-option -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64 -mno-80387 -mstack-alignment=8 -mtune=generic -mno-red-zone -mcmodel=kernel -DCONFIG_X86_X32_ABI -Wno-sign-compare -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -O2 -Wframe-larger-than=2048 -fno-stack-protector -fno-omit-frame-pointer -fno-optimize-sibling-calls -mno-omit-leaf-frame-pointer -Wdeclaration-after-statement -Wvla -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=/git/arm-soc/= -Werror -I /git/arm-soc/fs/dlm -I ./fs/dlm -DKBUILD_MODFILE='"fs/dlm/dlm"' -DKBUILD_BASENAME='"lock"' -DKBUILD_MODNAME='"dlm"' -c -o fs/dlm/lock.o /git/arm-soc/fs/dlm/lock.c ./tools/objtool/objtool check --uaccess fs/dlm/lock.o fs/dlm/lock.o: warning: objtool: __receive_convert_reply()+0x1e5: can't find jump dest instruction at .text+0xcaa7 make[4]: *** [/git/arm-soc/scripts/Makefile.build:273: fs/dlm/lock.o] Error 255
Attached object file and .config.
Arnd [unhandled content-type:application/gzip][unhandled content-type:application/gzip] | |