BPF programs include arch-specific headers, like x86/ibt Clang warns when compiling BPF kernel programs because kernel headers use the nocf_check attribute (__noendbr macro) which requires -fcf-protection, but this flag is meaningless for the BPF target
Fix this by only using nocf_check attribute when CET is enabled https://virtuozzo.atlassian.net/browse/VSTOR-127585 feature: fix kselftests Signed-off-by: Eva Kurchatova <[email protected]> --- arch/x86/include/asm/ibt.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/include/asm/ibt.h b/arch/x86/include/asm/ibt.h index 6c53ece42dea..0f12b375c7e9 100644 --- a/arch/x86/include/asm/ibt.h +++ b/arch/x86/include/asm/ibt.h @@ -29,7 +29,11 @@ #define ASM_ENDBR "endbr32\n\t" #endif +#ifdef __CET__ #define __noendbr __attribute__((nocf_check)) +#else +#define __noendbr __attribute__(()) +#endif /* * Create a dummy function pointer reference to prevent objtool from marking -- 2.54.0 _______________________________________________ Devel mailing list [email protected] https://lists.openvz.org/mailman/listinfo/devel
