tools/testing/selftests/arm64/tags/.gitignore: warning: ignored by one of the .gitignore files tools/testing/selftests/arm64/tags/Makefile: warning: ignored by one of the .gitignore files tools/testing/selftests/arm64/tags/tags_test.c: warning: ignored by one of the .gitignore files ../kernel/bpf/verifier.c:346:12: warning: symbol 'btf_vmlinux' was not declared. Should it be static? ../kernel/bpf/verifier.c:21474:38: error: subtraction of functions? Share your drugs ../kernel/bpf/verifier.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf-cgroup.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/rnull_mod.o ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static? tools/testing/selftests/arm64/tags/.gitignore: warning: ignored by one of the .gitignore files tools/testing/selftests/arm64/tags/Makefile: warning: ignored by one of the .gitignore files tools/testing/selftests/arm64/tags/tags_test.c: warning: ignored by one of the .gitignore files ../kernel/bpf/verifier.c:346:12: warning: symbol 'btf_vmlinux' was not declared. Should it be static? ../kernel/bpf/verifier.c:21465:38: error: subtraction of functions? Share your drugs ../kernel/bpf/verifier.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf-cgroup.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/rnull_mod.o ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?