bpf: test_progs run failed on debian 9

bpf: test_progs run failed on debian 9

[Ma Xinjian]

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Hi Andrii.

sorry to bother you again.

I run bpf: test_progs on debian 9, and failed with"Segmentation fault".

CONFIG_DEBUG_INFO_BTF was enabled in kconfig.


Testing env: "Debian GNU/Linux 9 (stretch)"

kernel: v5.7-rc2  v5.6 both failed


Whole run log and kconfig please see the attatchment.


Error info

```
root@vm-snb-42 
/usr/src/perf_selftests-x86_64-rhel-7.6-kselftests-ae83d0b416db002fe95601e7f97f64b59514d936/tools/testing/selftests/bpf# 
./test_progs
#1 attach_probe:OK
#2 bpf_obj_id:OK
#3/1 dctcp:OK
[snip]

libbpf: bpf_fentry_test1 is not found in vmlinux BTF
libbpf: failed to load object 'fentry_test'
libbpf: failed to load BPF skeleton 'fentry_test': -2
test_fentry_fexit:FAIL:fentry_skel_load fentry skeleton failed
#13 fentry_fexit:FAIL
libbpf: bpf_fentry_test1 is not found in vmlinux BTF
libbpf: failed to load object 'fentry_test'
libbpf: failed to load BPF skeleton 'fentry_test': -2
test_fentry_test:FAIL:fentry_skel_load fentry skeleton failed
#14 fentry_test:FAIL
#15 fexit_bpf2bpf:OK
libbpf: bpf_fentry_test1 is not found in vmlinux BTF
test_fexit_stress:FAIL:find_vmlinux_btf_id failed: -2
#16 fexit_stress:FAIL
libbpf: bpf_fentry_test1 is not found in vmlinux BTF
libbpf: failed to load object 'fexit_test'
libbpf: failed to load BPF skeleton 'fexit_test': -2
test_fexit_test:FAIL:fexit_skel_load fexit skeleton failed
#17 fexit_test:FAIL
#18 flow_dissector:OK
#19 flow_dissector_load_bytes:OK
#20 flow_dissector_reattach:OK
#21 get_stack_raw_tp:OK
#22 global_data:OK
#23 global_data_init:OK
test_kfree_skb:PASS:prog_load sched cls 0 nsec
libbpf: eth_type_trans is not found in vmlinux BTF
libbpf: failed to load object './kfree_skb.o'
test_kfree_skb:FAIL:prog_load raw tp err -22 errno 1
#24 kfree_skb:FAIL
#25 l4lb_all:OK
#26/1 pin_raw_tp:OK
#26/2 pin_tp_btf:OK
#26 link_pinning:OK
#27 map_lock:OK
Segmentation fault

```

-- 
Best Regards.
Ma Xinjian



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