linux-kernel - [perf] 9dc510db74: perf-sanity-tests.Read_samples_using_the_mmap

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Date:   Fri, 6 Dec 2019 08:47:22 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Song Liu <songliubraving@...com>
Cc:     Jiri Olsa <jolsa@...hat.com>,
        open list <linux-kernel@...r.kernel.org>,
        Kernel Team <Kernel-team@...com>,
        David Carrillo Cisneros <davidca@...com>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>, Tejun Heo <tj@...nel.org>,
        lkp@...ts.01.org
Subject: [perf] 9dc510db74:
 perf-sanity-tests.Read_samples_using_the_mmap_interface.fail

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

commit: 9dc510db74b1b873853747098e1cd66b71e63210 ("[PATCH v7] perf: Sharing PMU counters across compatible events
")
url: https://github.com/0day-ci/linux/commits/Song-Liu/perf-Sharing-PMU-counters-across-compatible-events/20191125-021305


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

	perf_compiler: gcc
	ucode: 0x27



on test machine: 8 threads Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8G memory

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


make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf'
2019-12-05 16:40:18 cd /usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf
2019-12-05 16:40:18 mkdir -p /pkg
2019-12-05 16:40:18 mkdir -p /kbuild/obj/consumer/x86_64-rhel-7.6
2019-12-05 16:40:18 cp /pkg/linux/x86_64-rhel-7.6/gcc-7/9dc510db74b1b873853747098e1cd66b71e63210/vmlinux.xz /tmp
2019-12-05 16:40:18 unxz -k /tmp/vmlinux.xz
2019-12-05 16:40:21 cp /tmp/vmlinux /kbuild/obj/consumer/x86_64-rhel-7.6
ignored_by_lkp: BPF filter
ignored_by_lkp: LLVM search and compile
ignored_by_lkp: Add vfs_getname probe to get syscall args filenames
ignored_by_lkp: Use vfs_getname probe to get syscall args filenames
ignored_by_lkp: Check open filename arg using perf trace + vfs_getname
ignored_by_lkp: builtin clang support
2019-12-05 16:40:21 sudo /usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf/perf test 1
 1: vmlinux symtab matches kallsyms                       : Ok
2019-12-05 16:40:21 sudo /usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf/perf test 2
 2: Detect openat syscall event                           : Ok
2019-12-05 16:40:21 sudo /usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf/perf test 3
 3: Detect openat syscall event on all cpus               : Ok
2019-12-05 16:40:21 sudo /usr/src/perf_selftests-x86_64-rhel-7.6-9dc510db74b1b873853747098e1cd66b71e63210/tools/perf/perf test 4
 4: Read samples using the mmap interface                 : FAILED!

To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Rong Chen


View attachment "config-5.4.0-rc8-00109-g9dc510db74b1b" of type "text/plain" (200680 bytes)

View attachment "job-script" of type "text/plain" (5277 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (32460 bytes)

View attachment "perf-sanity-tests" of type "text/plain" (28409 bytes)

View attachment "job.yaml" of type "text/plain" (4456 bytes)

View attachment "reproduce" of type "text/plain" (7573 bytes)