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Message-ID: <CAFxkdAp6Up0qSyp0sH0O1yD+5W3LvY-+-iniBrorcz2pMV+y-g@mail.gmail.com>
Date: Wed, 11 Dec 2019 09:33:53 -0600
From: Justin Forbes <jmforbes@...uxtx.org>
To: Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
Cc: Daniel Borkmann <daniel@...earbox.net>,
Song Liu <songliubraving@...com>,
Andrii Nakryiko <andriin@...com>,
Alexei Starovoitov <ast@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
"open list:BPF (Safe dynamic programs and tools)"
<netdev@...r.kernel.org>, Yonghong Song <yhs@...com>,
"open list:BPF (Safe dynamic programs and tools)"
<bpf@...r.kernel.org>, linuxppc-dev@...ts.ozlabs.org,
Martin KaFai Lau <kafai@...com>,
Aurelien Jarno <aurelien@...el32.net>,
debian-kernel@...ts.debian.org
Subject: Re: [PATCH] libbpf: fix readelf output parsing on powerpc with recent binutils
On Tue, Dec 10, 2019 at 4:26 PM Thadeu Lima de Souza Cascardo
<cascardo@...onical.com> wrote:
>
> On Tue, Dec 10, 2019 at 12:58:33PM -0600, Justin Forbes wrote:
> > On Mon, Dec 2, 2019 at 3:37 AM Daniel Borkmann <daniel@...earbox.net> wrote:
> > >
> > > On Mon, Dec 02, 2019 at 04:53:26PM +1100, Michael Ellerman wrote:
> > > > Aurelien Jarno <aurelien@...el32.net> writes:
> > > > > On powerpc with recent versions of binutils, readelf outputs an extra
> > > > > field when dumping the symbols of an object file. For example:
> > > > >
> > > > > 35: 0000000000000838 96 FUNC LOCAL DEFAULT [<localentry>: 8] 1 btf_is_struct
> > > > >
> > > > > The extra "[<localentry>: 8]" prevents the GLOBAL_SYM_COUNT variable to
> > > > > be computed correctly and causes the checkabi target to fail.
> > > > >
> > > > > Fix that by looking for the symbol name in the last field instead of the
> > > > > 8th one. This way it should also cope with future extra fields.
> > > > >
> > > > > Signed-off-by: Aurelien Jarno <aurelien@...el32.net>
> > > > > ---
> > > > > tools/lib/bpf/Makefile | 4 ++--
> > > > > 1 file changed, 2 insertions(+), 2 deletions(-)
> > > >
> > > > Thanks for fixing that, it's been on my very long list of test failures
> > > > for a while.
> > > >
> > > > Tested-by: Michael Ellerman <mpe@...erman.id.au>
> > >
> > > Looks good & also continues to work on x86. Applied, thanks!
> >
> > This actually seems to break horribly on PPC64le with binutils 2.33.1
> > resulting in:
> > Warning: Num of global symbols in sharedobjs/libbpf-in.o (32) does NOT
> > match with num of versioned symbols in libbpf.so (184). Please make
> > sure all LIBBPF_API symbols are versioned in libbpf.map.
> >
> > This is the only arch that fails, with x86/arm/aarch64/s390 all
> > building fine. Reverting this patch allows successful build across
> > all arches.
> >
> > Justin
>
> Well, I ended up debugging this same issue and had the same fix as Jarno's when
> I noticed his fix was already applied.
>
> I just installed a system with the latest binutils, 2.33.1, and it still breaks
> without such fix. Can you tell what is the output of the following command on
> your system?
>
> readelf -s --wide tools/lib/bpf/sharedobjs/libbpf-in.o | cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $0}'
>
readelf -s --wide tools/lib/bpf/sharedobjs/libbpf-in.o | cut -d "@"
-f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | awk '/GLOBAL/ && /DEFAULT/ &&
!/UND/ {print $0}'
373: 00000000000141bc 1376 FUNC GLOBAL DEFAULT 1
libbpf_num_possible_cpus [<localentry>: 8]
375: 000000000001869c 176 FUNC GLOBAL DEFAULT 1 btf__free
[<localentry>: 8]
377: 000000000001093c 84 FUNC GLOBAL DEFAULT 1
bpf_object__find_map_by_offset [<localentry>: 8]
378: 0000000000016288 100 FUNC GLOBAL DEFAULT 1
bpf_prog_get_next_id [<localentry>: 8]
379: 00000000000103c0 104 FUNC GLOBAL DEFAULT 1
bpf_map__priv [<localentry>: 8]
380: 000000000000e158 180 FUNC GLOBAL DEFAULT 1
bpf_object__pin [<localentry>: 8]
381: 00000000000102f8 200 FUNC GLOBAL DEFAULT 1
bpf_map__set_priv [<localentry>: 8]
382: 000000000001874c 380 FUNC GLOBAL DEFAULT 1 btf__new
[<localentry>: 8]
384: 000000000002238c 1372 FUNC GLOBAL DEFAULT 1 xsk_umem__create
385: 00000000000106fc 116 FUNC GLOBAL DEFAULT 1
bpf_map__next [<localentry>: 8]
387: 00000000000162ec 100 FUNC GLOBAL DEFAULT 1
bpf_map_get_next_id [<localentry>: 8]
389: 000000000000f574 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_xdp [<localentry>: 8]
390: 0000000000011e14 392 FUNC GLOBAL DEFAULT 1
bpf_program__attach_tracepoint [<localentry>: 8]
391: 0000000000016534 196 FUNC GLOBAL DEFAULT 1
bpf_obj_get_info_by_fd [<localentry>: 8]
392: 000000000000cf64 324 FUNC GLOBAL DEFAULT 1
bpf_program__unpin_instance [<localentry>: 8]
393: 000000000000d818 456 FUNC GLOBAL DEFAULT 1
bpf_map__unpin [<localentry>: 8]
395: 000000000000efe0 64 FUNC GLOBAL DEFAULT 1 bpf_program__set_type
396: 0000000000010e94 696 FUNC GLOBAL DEFAULT 1
bpf_program__attach_perf_event [<localentry>: 8]
397: 000000000001a774 136 FUNC GLOBAL DEFAULT 1
btf_ext__reloc_func_info [<localentry>: 8]
398: 0000000000014bc8 236 FUNC GLOBAL DEFAULT 1
bpf_create_map_name [<localentry>: 8]
402: 00000000000228e8 160 FUNC GLOBAL DEFAULT 1 xsk_umem__create
403: 0000000000021f1c 72 FUNC GLOBAL DEFAULT 1 xsk_socket__fd
404: 000000000001a8ec 536 FUNC GLOBAL DEFAULT 1 btf__dedup
[<localentry>: 8]
405: 000000000000eadc 180 FUNC GLOBAL DEFAULT 1
bpf_program__set_priv [<localentry>: 8]
409: 000000000000c540 144 FUNC GLOBAL DEFAULT 1
bpf_object__open_file [<localentry>: 8]
410: 00000000000121a8 416 FUNC GLOBAL DEFAULT 1
bpf_program__attach_trace [<localentry>: 8]
415: 000000000000d51c 764 FUNC GLOBAL DEFAULT 1
bpf_map__pin [<localentry>: 8]
416: 00000000000154d0 212 FUNC GLOBAL DEFAULT 1
bpf_load_program [<localentry>: 8]
418: 0000000000010810 192 FUNC GLOBAL DEFAULT 1
bpf_object__find_map_by_name [<localentry>: 8]
420: 0000000000012348 580 FUNC GLOBAL DEFAULT 1
bpf_perf_event_read_simple [<localentry>: 8]
421: 00000000000191e8 220 FUNC GLOBAL DEFAULT 1
btf__finalize_data [<localentry>: 8]
422: 0000000000010a80 724 FUNC GLOBAL DEFAULT 1
bpf_prog_load_xattr [<localentry>: 8]
423: 000000000000f688 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_tracing [<localentry>: 8]
424: 0000000000018560 316 FUNC GLOBAL DEFAULT 1
btf__find_by_name_kind [<localentry>: 8]
426: 00000000000163b4 128 FUNC GLOBAL DEFAULT 1
bpf_prog_get_fd_by_id [<localentry>: 8]
427: 000000000001a884 52 FUNC GLOBAL DEFAULT 1
btf_ext__func_info_rec_size
428: 0000000000025654 480 FUNC GLOBAL DEFAULT 1
btf_dump__new [<localentry>: 8]
429: 0000000000010770 160 FUNC GLOBAL DEFAULT 1
bpf_map__prev [<localentry>: 8]
431: 0000000000011968 504 FUNC GLOBAL DEFAULT 1
bpf_program__attach_uprobe [<localentry>: 8]
432: 00000000000011ac 416 FUNC GLOBAL DEFAULT 1
bpf_program__unload [<localentry>: 8]
433: 000000000000ea50 140 FUNC GLOBAL DEFAULT 1
bpf_program__prev [<localentry>: 8]
434: 00000000000149cc 280 FUNC GLOBAL DEFAULT 1
bpf_create_map_node [<localentry>: 8]
435: 000000000001a28c 116 FUNC GLOBAL DEFAULT 1
btf_ext__free [<localentry>: 8]
436: 000000000001668c 420 FUNC GLOBAL DEFAULT 1
bpf_load_btf [<localentry>: 8]
438: 0000000000013988 1564 FUNC GLOBAL DEFAULT 1
bpf_program__get_prog_info_linear [<localentry>: 8]
439: 000000000000e034 292 FUNC GLOBAL DEFAULT 1
bpf_object__unpin_programs [<localentry>: 8]
440: 000000000000ece0 88 FUNC GLOBAL DEFAULT 1
bpf_program__fd [<localentry>: 8]
441: 000000000000f634 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_perf_event [<localentry>: 8]
442: 0000000000021094 304 FUNC GLOBAL DEFAULT 1 bpf_prog_linfo__lfind
444: 000000000000c764 324 FUNC GLOBAL DEFAULT 1
bpf_object__unload [<localentry>: 8]
449: 0000000000019558 692 FUNC GLOBAL DEFAULT 1
btf__get_from_id [<localentry>: 8]
453: 000000000000f088 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_socket_filter [<localentry>: 8]
454: 0000000000015b24 148 FUNC GLOBAL DEFAULT 1 bpf_obj_pin
[<localentry>: 8]
456: 0000000000014cb4 336 FUNC GLOBAL DEFAULT 1
bpf_create_map_in_map_node [<localentry>: 8]
457: 0000000000015bb8 132 FUNC GLOBAL DEFAULT 1 bpf_obj_get
[<localentry>: 8]
458: 0000000000024050 436 FUNC GLOBAL DEFAULT 1
xsk_socket__delete [<localentry>: 8]
459: 000000000000106c 88 FUNC GLOBAL DEFAULT 1
libbpf_set_print [<localentry>: 8]
460: 000000000000f1b4 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_kprobe [<localentry>: 8]
461: 0000000000012c6c 244 FUNC GLOBAL DEFAULT 1
perf_buffer__new_raw [<localentry>: 8]
462: 000000000000e74c 180 FUNC GLOBAL DEFAULT 1
bpf_object__set_priv [<localentry>: 8]
463: 000000000001046c 68 FUNC GLOBAL DEFAULT 1 bpf_map__is_internal
464: 000000000000e20c 828 FUNC GLOBAL DEFAULT 1
bpf_object__close [<localentry>: 8]
466: 0000000000010220 72 FUNC GLOBAL DEFAULT 1 bpf_map__name
467: 0000000000013fa4 268 FUNC GLOBAL DEFAULT 1
bpf_program__bpil_addr_to_offs [<localentry>: 8]
468: 000000000001f880 684 FUNC GLOBAL DEFAULT 1
bpf_set_link_xdp_fd [<localentry>: 8]
469: 000000000000f6f4 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_tracing [<localentry>: 8]
470: 000000000000dce4 348 FUNC GLOBAL DEFAULT 1
bpf_object__unpin_maps [<localentry>: 8]
471: 000000000000efac 52 FUNC GLOBAL DEFAULT 1 bpf_program__get_type
472: 00000000000259a4 548 FUNC GLOBAL DEFAULT 1
btf_dump__dump_type [<localentry>: 8]
476: 0000000000018458 264 FUNC GLOBAL DEFAULT 1
btf__find_by_name [<localentry>: 8]
477: 000000000000dad0 52 FUNC GLOBAL DEFAULT 1 bpf_map__is_pinned
478: 000000000000f748 52 FUNC GLOBAL DEFAULT 1
bpf_program__get_expected_attach_type
479: 00000000000104f0 196 FUNC GLOBAL DEFAULT 1
bpf_map__set_inner_map_fd [<localentry>: 8]
480: 0000000000021ed4 72 FUNC GLOBAL DEFAULT 1 xsk_umem__fd
481: 00000000000101b8 104 FUNC GLOBAL DEFAULT 1
bpf_map__def [<localentry>: 8]
482: 0000000000015c3c 188 FUNC GLOBAL DEFAULT 1
bpf_prog_attach [<localentry>: 8]
483: 000000000000e6d8 116 FUNC GLOBAL DEFAULT 1
bpf_object__btf_fd [<localentry>: 8]
485: 000000000000db04 480 FUNC GLOBAL DEFAULT 1
bpf_object__pin_maps [<localentry>: 8]
487: 0000000000020bd0 772 FUNC GLOBAL DEFAULT 1
bpf_prog_linfo__new [<localentry>: 8]
488: 0000000000016050 388 FUNC GLOBAL DEFAULT 1
bpf_prog_test_run_xattr [<localentry>: 8]
490: 000000000001a8b8 52 FUNC GLOBAL DEFAULT 1
btf_ext__line_info_rec_size
492: 0000000000015aa4 128 FUNC GLOBAL DEFAULT 1
bpf_map_freeze [<localentry>: 8]
493: 00000000000194ac 72 FUNC GLOBAL DEFAULT 1 btf__get_raw_data
494: 000000000000ed70 300 FUNC GLOBAL DEFAULT 1
bpf_program__set_prep [<localentry>: 8]
497: 0000000000014e04 156 FUNC GLOBAL DEFAULT 1
bpf_create_map_in_map [<localentry>: 8]
501: 0000000000014ae4 228 FUNC GLOBAL DEFAULT 1
bpf_create_map [<localentry>: 8]
502: 000000000000f77c 64 FUNC GLOBAL DEFAULT 1
bpf_program__set_expected_attach_type
503: 000000000000f388 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_tracepoint [<localentry>: 8]
504: 0000000000010428 68 FUNC GLOBAL DEFAULT 1
bpf_map__is_offload_neutral
505: 00000000000159fc 168 FUNC GLOBAL DEFAULT 1
bpf_map_get_next_key [<localentry>: 8]
506: 0000000000018328 304 FUNC GLOBAL DEFAULT 1
btf__resolve_type [<localentry>: 8]
507: 00000000000108d0 108 FUNC GLOBAL DEFAULT 1
bpf_object__find_map_fd_by_name [<localentry>: 8]
508: 000000000001580c 180 FUNC GLOBAL DEFAULT 1
bpf_map_lookup_elem_flags [<localentry>: 8]
511: 000000000000c4d8 104 FUNC GLOBAL DEFAULT 1
bpf_object__open [<localentry>: 8]
513: 000000000000f274 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_sched_cls [<localentry>: 8]
514: 000000000001a4e0 72 FUNC GLOBAL DEFAULT 1 btf_ext__get_raw_data
515: 000000000000e5e4 100 FUNC GLOBAL DEFAULT 1
bpf_object__name [<localentry>: 8]
516: 00000000000158c0 168 FUNC GLOBAL DEFAULT 1
bpf_map_lookup_and_delete_elem [<localentry>: 8]
518: 00000000000228e8 160 FUNC GLOBAL DEFAULT 1 xsk_umem__create
520: 000000000002238c 1372 FUNC GLOBAL DEFAULT 1 xsk_umem__create
522: 000000000000e800 104 FUNC GLOBAL DEFAULT 1
bpf_object__priv [<localentry>: 8]
523: 00000000000066c8 728 FUNC GLOBAL DEFAULT 1
bpf_map__reuse_fd [<localentry>: 8]
524: 000000000000da9c 52 FUNC GLOBAL DEFAULT 1 bpf_map__get_pin_path
525: 000000000000ffe8 392 FUNC GLOBAL DEFAULT 1
libbpf_attach_type_by_name [<localentry>: 8]
526: 000000000000e648 72 FUNC GLOBAL DEFAULT 1 bpf_object__kversion
527: 000000000000d330 492 FUNC GLOBAL DEFAULT 1
bpf_program__unpin [<localentry>: 8]
529: 00000000000126ac 336 FUNC GLOBAL DEFAULT 1
perf_buffer__free [<localentry>: 8]
532: 0000000000014fd8 1272 FUNC GLOBAL DEFAULT 1
bpf_load_program_xattr [<localentry>: 8]
533: 00000000000165f8 148 FUNC GLOBAL DEFAULT 1
bpf_raw_tracepoint_open [<localentry>: 8]
535: 000000000000c8a8 504 FUNC GLOBAL DEFAULT 1
bpf_object__load_xattr [<localentry>: 8]
537: 0000000000015e34 248 FUNC GLOBAL DEFAULT 1
bpf_prog_query [<localentry>: 8]
542: 000000000001a7fc 136 FUNC GLOBAL DEFAULT 1
btf_ext__reloc_line_info [<localentry>: 8]
543: 000000000000e9c4 140 FUNC GLOBAL DEFAULT 1
bpf_program__next [<localentry>: 8]
544: 0000000000019478 52 FUNC GLOBAL DEFAULT 1 btf__fd
545: 0000000000017f80 104 FUNC GLOBAL DEFAULT 1 btf__type_by_id
546: 000000000000c65c 264 FUNC GLOBAL DEFAULT 1
bpf_object__open_buffer [<localentry>: 8]
548: 0000000000015d8c 168 FUNC GLOBAL DEFAULT 1
bpf_prog_detach2 [<localentry>: 8]
549: 000000000000fadc 424 FUNC GLOBAL DEFAULT 1
libbpf_find_vmlinux_btf_id [<localentry>: 8]
550: 0000000000010170 72 FUNC GLOBAL DEFAULT 1 bpf_map__fd
552: 0000000000010990 80 FUNC GLOBAL DEFAULT 1
libbpf_get_error [<localentry>: 8]
554: 000000000000caa0 120 FUNC GLOBAL DEFAULT 1
bpf_object__load [<localentry>: 8]
556: 0000000000021960 848 FUNC GLOBAL DEFAULT 1
bpf_probe_map_type [<localentry>: 8]
557: 00000000000237a0 1912 FUNC GLOBAL DEFAULT 1
xsk_socket__create [<localentry>: 8]
559: 000000000000f960 380 FUNC GLOBAL DEFAULT 1
libbpf_prog_type_by_name [<localentry>: 8]
560: 0000000000005b14 192 FUNC GLOBAL DEFAULT 1
bpf_object__find_program_by_title [<localentry>: 8]
563: 000000000000f5c8 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_perf_event [<localentry>: 8]
564: 000000000000ed38 56 FUNC GLOBAL DEFAULT 1 bpf_program__size
565: 000000000000f334 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_sched_act [<localentry>: 8]
566: 00000000000156b0 180 FUNC GLOBAL DEFAULT 1
bpf_map_update_elem [<localentry>: 8]
568: 000000000000f4b4 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_raw_tracepoint [<localentry>: 8]
569: 000000000001890c 1468 FUNC GLOBAL DEFAULT 1
btf__parse_elf [<localentry>: 8]
570: 000000000000e690 72 FUNC GLOBAL DEFAULT 1 bpf_object__btf
571: 000000000000f448 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_raw_tracepoint [<localentry>: 8]
578: 000000000000f2c8 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_sched_act [<localentry>: 8]
579: 0000000000025834 368 FUNC GLOBAL DEFAULT 1
btf_dump__free [<localentry>: 8]
580: 000000000000f3f4 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_tracepoint [<localentry>: 8]
581: 0000000000020ed4 448 FUNC GLOBAL DEFAULT 1
bpf_prog_linfo__lfind_addr_func
582: 00000000000164b4 128 FUNC GLOBAL DEFAULT 1
bpf_btf_get_fd_by_id [<localentry>: 8]
583: 00000000000192c4 436 FUNC GLOBAL DEFAULT 1 btf__load
[<localentry>: 8]
584: 000000000000f508 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_xdp [<localentry>: 8]
587: 0000000000016830 372 FUNC GLOBAL DEFAULT 1
bpf_task_fd_query [<localentry>: 8]
591: 0000000000015cf8 148 FUNC GLOBAL DEFAULT 1
bpf_prog_detach [<localentry>: 8]
593: 000000000000c5d0 140 FUNC GLOBAL DEFAULT 1
bpf_object__open_mem [<localentry>: 8]
594: 0000000000015968 148 FUNC GLOBAL DEFAULT 1
bpf_map_delete_elem [<localentry>: 8]
595: 0000000000021cb0 548 FUNC GLOBAL DEFAULT 1
bpf_probe_helper [<localentry>: 8]
596: 0000000000011784 484 FUNC GLOBAL DEFAULT 1
bpf_program__attach_kprobe [<localentry>: 8]
597: 00000000000069a0 124 FUNC GLOBAL DEFAULT 1 bpf_map__resize
599: 0000000000020b20 176 FUNC GLOBAL DEFAULT 1
bpf_prog_linfo__free [<localentry>: 8]
601: 000000000000ee9c 272 FUNC GLOBAL DEFAULT 1
bpf_program__nth_fd [<localentry>: 8]
602: 0000000000010d54 144 FUNC GLOBAL DEFAULT 1
bpf_link__destroy [<localentry>: 8]
604: 00000000000102b0 72 FUNC GLOBAL DEFAULT 1
bpf_map__btf_value_type_id
606: 0000000000020070 184 FUNC GLOBAL DEFAULT 1
bpf_get_link_xdp_id [<localentry>: 8]
608: 000000000000d0a8 648 FUNC GLOBAL DEFAULT 1
bpf_program__pin [<localentry>: 8]
609: 000000000001f100 380 FUNC GLOBAL DEFAULT 1
libbpf_strerror [<localentry>: 8]
610: 00000000000104b0 64 FUNC GLOBAL DEFAULT 1 bpf_map__set_ifindex
611: 000000000000de40 500 FUNC GLOBAL DEFAULT 1
bpf_object__pin_programs [<localentry>: 8]
612: 000000000001fde0 476 FUNC GLOBAL DEFAULT 1
bpf_get_link_xdp_info [<localentry>: 8]
613: 0000000000015764 168 FUNC GLOBAL DEFAULT 1
bpf_map_lookup_elem [<localentry>: 8]
614: 000000000000d9e0 188 FUNC GLOBAL DEFAULT 1
bpf_map__set_pin_path [<localentry>: 8]
616: 0000000000012000 424 FUNC GLOBAL DEFAULT 1
bpf_program__attach_raw_tracepoint [<localentry>: 8]
617: 0000000000023f18 312 FUNC GLOBAL DEFAULT 1
xsk_umem__delete [<localentry>: 8]
618: 000000000000eb90 104 FUNC GLOBAL DEFAULT 1
bpf_program__priv [<localentry>: 8]
619: 00000000000180e0 584 FUNC GLOBAL DEFAULT 1
btf__resolve_size [<localentry>: 8]
620: 00000000000155a4 268 FUNC GLOBAL DEFAULT 1
bpf_verify_program [<localentry>: 8]
621: 000000000000b8ec 1000 FUNC GLOBAL DEFAULT 1
bpf_program__load [<localentry>: 8]
623: 00000000000194f4 100 FUNC GLOBAL DEFAULT 1 btf__name_by_offset
624: 000000000000f148 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_kprobe [<localentry>: 8]
625: 00000000000140b0 268 FUNC GLOBAL DEFAULT 1
bpf_program__bpil_offs_to_addr [<localentry>: 8]
626: 0000000000016434 128 FUNC GLOBAL DEFAULT 1
bpf_map_get_fd_by_id [<localentry>: 8]
627: 0000000000017f4c 52 FUNC GLOBAL DEFAULT 1 btf__get_nr_types
628: 00000000000215c0 340 FUNC GLOBAL DEFAULT 1
bpf_probe_prog_type [<localentry>: 8]
632: 000000000000c484 84 FUNC GLOBAL DEFAULT 1
bpf_object__open_xattr [<localentry>: 8]
633: 000000000000cda8 444 FUNC GLOBAL DEFAULT 1
bpf_program__pin_instance [<localentry>: 8]
635: 00000000000109e0 160 FUNC GLOBAL DEFAULT 1
bpf_prog_load [<localentry>: 8]
637: 0000000000015f2c 292 FUNC GLOBAL DEFAULT 1
bpf_prog_test_run [<localentry>: 8]
638: 00000000000136a4 312 FUNC GLOBAL DEFAULT 1
perf_buffer__poll [<localentry>: 8]
640: 0000000000010268 72 FUNC GLOBAL DEFAULT 1
bpf_map__btf_key_type_id
641: 000000000000f0f4 84 FUNC GLOBAL DEFAULT 1
bpf_program__is_socket_filter [<localentry>: 8]
643: 000000000001980c 968 FUNC GLOBAL DEFAULT 1
btf__get_map_kv_tids [<localentry>: 8]
645: 000000000001a300 480 FUNC GLOBAL DEFAULT 1
btf_ext__new [<localentry>: 8]
647: 0000000000012ab8 436 FUNC GLOBAL DEFAULT 1
perf_buffer__new [<localentry>: 8]
648: 000000000000f208 108 FUNC GLOBAL DEFAULT 1
bpf_program__set_sched_cls [<localentry>: 8]
649: 000000000000ec38 168 FUNC GLOBAL DEFAULT 1
bpf_program__title [<localentry>: 8]
650: 0000000000016350 100 FUNC GLOBAL DEFAULT 1
bpf_btf_get_next_id [<localentry>: 8]
653: 000000000001485c 368 FUNC GLOBAL DEFAULT 1
bpf_create_map_xattr [<localentry>: 8]
656: 000000000000e548 156 FUNC GLOBAL DEFAULT 1
bpf_object__next [<localentry>: 8]
657: 000000000000ebf8 64 FUNC GLOBAL DEFAULT 1
bpf_program__set_ifindex
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