https://bugs.dpdk.org/show_bug.cgi?id=811
Bug ID: 811
Summary: BPF tests fail with clang
Product: DPDK
Version: 21.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: other
Assignee: dev@dpdk.org
Reporter: step...@networkplumber.org
Target Milestone: ---
The bpf_autotest fails when DPDK 21.11 is built with clang.
Same test and code work when built with Gcc.
$ clang --version
Debian clang version 11.0.1-2
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ gcc --version
gcc (Debian 10.2.1-6) 10.2.1 20210110
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ DPDK_TEST='bpf_autotest'
/home/shemminger/DPDK/pcapng2/build/app/test/dpdk-test -l 0-15 --no-huge -m
2048
EAL: Detected 16 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /run/user/1000/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
APP: HPET is not enabled, using TSC as default timer
RTE>>bpf_autotest
run_test(test_store1) start
run_test(test_store2) start
run_test(test_load1) start
run_test(test_ldimm1) start
run_test(test_mul1) start
run_test(test_shift1) start
test_shift1_check: invalid value
expected:
00:80:21:81:00:00:00:00:00:00:00:00:00:00:00:00:ff:db:dd:ed:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:ff:00:00:00:00:00:00:00:00:c0:ed:27:21:00:00:00:00:00:00:00:00:00:00:00:00:81:ef:ad:f6:ff:76:77:fb:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
result:
00:80:21:81:00:00:00:00:00:00:00:00:00:00:00:00:ff:db:dd:ed:ff:ff:ff:ff:00:00:00:00:00:00:00:00:81:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:ff:00:00:00:00:00:00:00:00:c0:ed:27:21:00:00:00:00:00:00:00:00:00:00:00:00:81:ef:ad:f6:ff:76:77:fb:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
run_test@3196: check_result(test_shift1) failed, error: -1(Unknown error -1);
test_shift1_check: invalid value
expected:
00:00:cf:4e:00:00:00:00:00:00:00:00:00:00:00:00:cf:bb:75:ef:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:80:e7:dd:ba:00:00:00:00:00:00:00:00:00:00:00:c0:00:00:00:00:00:00:00:00:00:00:00:00:7b:de:ad:7b:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
result:
00:00:cf:4e:00:00:00:00:00:00:00:00:00:00:00:00:cf:bb:75:ef:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:9e:9d:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:80:e7:dd:ba:00:00:00:00:00:00:00:00:00:00:00:c0:00:00:00:00:00:00:00:00:00:00:00:00:7b:de:ad:7b:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
run_test@3210: check_result(test_shift1) failed, error: -1(Unknown error -1);
run_test(test_jump1) start
run_test(test_jump2) start
run_test(test_alu1) start
run_test(test_bele1) start
run_test(test_xadd1) start
run_test(test_div1) start
bpf_exec(0x7f3a1d03d000): division by 0 at pc: 0x68;
run_test(test_call1) start
run_test(test_call2) start
run_test(test_call3) start
run_test(test_call4) start
run_test(test_call5) start
run_test(test_ld_mbuf1) start
run_test(test_ld_mbuf2) start
run_test(test_ld_mbuf3) start
Test Failed
RTE>>
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