The x86 / i386 compilations encountered errors due to additional Kconfigs incorporated from the selftests/net/*/config in the Linux next version. The issue first appeared with the next-20240213 tag. This problem affects the Linux next branch, but not the mainline Linus master branch.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
The bisection points to the following commit id, # first bad commit: [64259ce2a20ce2dcc585a2cb83d1366fb04a6008] ubsan: reintroduce signed overflow sanitizer
Build errors: ------------- In function 'memcmp', inlined from 'nft_pipapo_insert' at /builds/linux/net/netfilter/nft_set_pipapo.c:1258:7: /builds/linux/include/linux/fortify-string.h:63:33: error: '__builtin_memcmp' specified bound 18446744071562067968 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overread] 63 | #define __underlying_memcmp __builtin_memcmp | ^ /builds/linux/include/linux/fortify-string.h:655:16: note: in expansion of macro '__underlying_memcmp' 655 | return __underlying_memcmp(p, q, size); | ^~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors
Steps to reproduce: ----- tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-13 \ --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2cfazKeUY5ZIZx7MgVwRA... \ debugkernel cpupower headers kernel kselftest modules
config link: - https://storage.tuxsuite.com/public/linaro/lkft/builds/2cfazKeUY5ZIZx7MgVwRA... - https://storage.tuxsuite.com/public/linaro/lkft/builds/2cfazKeUY5ZIZx7MgVwRA...
-- Linaro LKFT https://lkft.linaro.org