On Fri, Feb 5, 2021 at 10:10 PM Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote: > > > Hi, > > > > when building with pahole v1.20 and binutils v2.35.2 plus Clang > > v12.0.0-rc1 and DWARF-v5 I see: > > ... > > + info BTF .btf.vmlinux.bin.o > > + [ != silent_ ] > > + printf %-7s %s\n BTF .btf.vmlinux.bin.o > > BTF .btf.vmlinux.bin.o > > + LLVM_OBJCOPY=/opt/binutils/bin/objcopy /opt/pahole/bin/pahole -J > > .tmp_vmlinux.btf > > [115] INT DW_ATE_unsigned_1 Error emitting BTF type > > Encountered error while encoding BTF. > > Yes, I observe this error, too. > > https://gist.github.com/nickdesaulniers/ae8c9efbe4da69b1cf0dce138c1d2781 > > via v9 of my DWARF v5 series, which should help make this easier to > reproduce: > https://lore.kernel.org/lkml/CA+icZUW3sg_PkbmKSFMs6EqwQV7=hvKuAgZSsbg=Qr6gTs7RbQ@xxxxxxxxxxxxxx/T/#m45ec7e6df4c4b5e9da034b95d7dfc8e2a0c81dac Thanks Nick for confirming the error. Ah, I see you passed: make LLVM=1 LLVM_IAS=1 ... Can you by chance try with KCFLAGS="-fbinutils-version=2.35"? - Sedat -
