netdev - [lkp-robot] [samples/bpf] a0bad08afa: kernel_selftests.test_tcpbpf

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Message-ID: <20180508053323.GC30203@yexl-desktop>
Date:   Tue, 8 May 2018 13:33:23 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     David Ahern <dsahern@...il.com>
Cc:     netdev@...r.kernel.org, borkmann@...earbox.net, ast@...nel.org,
        davem@...emloft.net, shm@...ulusnetworks.com,
        roopa@...ulusnetworks.com, brouer@...hat.com, toke@...e.dk,
        john.fastabend@...il.com, David Ahern <dsahern@...il.com>,
        lkp@...org
Subject: [lkp-robot] [samples/bpf]  a0bad08afa:
 kernel_selftests.test_tcpbpf_user.fail


FYI, we noticed the following commit (built with gcc-7):

commit: a0bad08afa7bef3fff4bc27f04c7368aa90dc3d0 ("samples/bpf: Add example of ipv4 and ipv6 forwarding in XDP")
url: https://github.com/0day-ci/linux/commits/David-Ahern/bpf-Add-helper-to-do-FIB-lookups/20180504-042228
base: https://git.kernel.org/cgit/linux/kernel/git/bpf/bpf-next.git master

in testcase: kernel_selftests
with following parameters:

	group: kselftests-00

test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt


on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):

selftests: test_tcpbpf_user
========================================
libbpf: test_tcpbpf_kern.o doesn't provide kernel version
FAILED: load_bpf_file failed for: test_tcpbpf_kern.o
not ok 1..10 selftests:  test_tcpbpf_user [FAIL]


Thanks,
Xiaolong

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