On Thu, Aug 1, 2019 at 12:41 AM Andrii Nakryiko <[email protected]> wrote: > > 5d01ab7bac46 ("libbpf: fix erroneous multi-closing of BTF FD") > introduced backwards-compatibility issue, manifesting itself as -E2BIG > error returned on program load due to unknown non-zero btf_fd attribute > value for BPF_PROG_LOAD sys_bpf() sub-command. > > This patch fixes bug by ensuring that we only ever associate BTF FD with > program if there is a BTF.ext data that was successfully loaded into > kernel, which automatically means kernel supports func_info/line_info > and associated BTF FD for progs (checked and ensured also by BTF > sanitization code). > > Fixes: 5d01ab7bac46 ("libbpf: fix erroneous multi-closing of BTF FD") > Reported-by: Andrey Ignatov <[email protected]> > Signed-off-by: Andrii Nakryiko <[email protected]>
Applied. Thanks
