On Thu, Jan 14, 2021 at 3:24 PM Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > > On Thu, Jan 14, 2021 at 03:13:18PM +0100, Sedat Dilek wrote: > > On Mon, Jan 11, 2021 at 11:31 PM Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > > > > > > On Mon, Jan 11, 2021 at 10:30:22PM +0100, Sedat Dilek wrote: > > > > > > SNIP > > > > > > > > > > > > > > > Building a new Linux-kernel... > > > > > > > > > > > > - Sedat - > > > > > > > > > > > > [1] https://git.kernel.org/pub/scm/devel/pahole/pahole.git/ > > > > > > [2] https://github.com/ClangBuiltLinux/tc-build/issues/129#issuecomment-758026878 > > > > > > [3] https://github.com/ClangBuiltLinux/tc-build/issues/129#issuecomment-758056553 > > > > > > > > > > There are no significant bug fixes between pahole 1.19 and master that > > > > > would solve this problem, so let's try to repro this. > > > > > > > > > > > > > You are right pahole fom latest Git does not solve the issue. > > > > > > > > + info BTFIDS vmlinux > > > > + [ != silent_ ] > > > > + printf %-7s %s\n BTFIDS vmlinux > > > > BTFIDS vmlinux > > > > + ./tools/bpf/resolve_btfids/resolve_btfids vmlinux > > > > FAILED: load BTF from vmlinux: Invalid argument > > > > > > hm, is there a .BTF section in vmlinux? > > > > > > is this working over vmlinux: > > > $ bpftool btf dump file ./vmlinux > > > > > > > I switched to LLVM v12 from <apt.llvm.org> and saw the same FAILED line. > > > > The generated vmlinux file is cleaned on failure. > > > > + info BTFIDS vmlinux > > + [ != silent_ ] > > + printf %-7s %s\n BTFIDS vmlinux > > BTFIDS vmlinux > > + ./tools/bpf/resolve_btfids/resolve_btfids vmlinux > > FAILED: load BTF from vmlinux: Invalid argument > > did pahole generated the .BTF section? earlier in the log > > jirka > Cannot say. I did: $ git diff diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 2d0b28758aa5..c6e679d08bbe 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -401,12 +401,6 @@ fi vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o} -# fill in BTF IDs -if [ -n "${CONFIG_DEBUG_INFO_BTF}" -a -n "${CONFIG_BPF}" ]; then - info BTFIDS vmlinux - ${RESOLVE_BTFIDS} vmlinux -fi - if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then info SORTTAB vmlinux if ! sorttable vmlinux; then - Sedat -
