| Message ID | 20210705103841.180260-1-toke@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | [bpf-next] samples/bpf: add -fno-asynchronous-unwind-tables to BPF Clang invocation | expand |
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 520434ea966f..036998d11ded 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -331,6 +331,7 @@ $(obj)/%.o: $(src)/%.c -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ + -fno-asynchronous-unwind-tables \ -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \ $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \
The samples/bpf Makefile currently compiles BPF files in a way that will produce an .eh_frame section, which will in turn confuse libbpf and produce errors when loading BPF programs, like: libbpf: elf: skipping unrecognized data section(32) .eh_frame libbpf: elf: skipping relo section(33) .rel.eh_frame for section(32) .eh_frame Fix this by instruction Clang not to produce this section, as it's useless for BPF anyway. Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> --- samples/bpf/Makefile | 1 + 1 file changed, 1 insertion(+)