linux-kernel - [lkp-robot] [perf tests] 32a4debc7c: perf-sanity-tests.probe_libc's_inet_pton_&_backtrace_it_with

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Date:   Wed, 4 Jul 2018 14:57:21 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Sandipan Das <sandipan@...ux.vnet.ibm.com>
Cc:     acme@...nel.org, jolsa@...hat.com, linux-kernel@...r.kernel.org,
        ravi.bangoria@...ux.ibm.com, naveen.n.rao@...ux.vnet.ibm.com,
        tmricht@...ux.ibm.com, lkp@...org
Subject: [lkp-robot] [perf tests]  32a4debc7c:
 perf-sanity-tests.probe_libc's_inet_pton_&_backtrace_it_with_ping.fail


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

commit: 32a4debc7c89ee5e29c0bbdfdd3ae0ce0e01057f ("[PATCH] perf tests: Fix regex for record+probe_libc_inet_pton.sh")
url: https://github.com/0day-ci/linux/commits/Sandipan-Das/perf-tests-Fix-regex-for-record-probe_libc_inet_pton-sh/20180521-130408


in testcase: perf-sanity-tests
with following parameters:

	perf_compiler: gcc



on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -smp 2 -m 8G

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


2018-05-22 17:41:14 sudo /usr/src/linux-perf-x86_64-fedora-25-32a4debc7c89ee5e29c0bbdfdd3ae0ce0e01057f/tools/perf/perf test 62
62: probe libc's inet_pton & backtrace it with ping       : FAILED!



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
Xiaolong

View attachment "job-script" of type "text/plain" (4386 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (20828 bytes)

View attachment "perf-sanity-tests" of type "text/plain" (24831 bytes)