Date:   Sat, 21 Jul 2018 10:41:13 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Francis Deslauriers <francis.deslauriers@...icios.com>
Cc:     rostedt@...dmis.org, mhiramat@...nel.org, peterz@...radead.org,
        mathieu.desnoyers@...icios.com, linux-kernel@...r.kernel.org,
        lkp@...org
Subject: [lkp-robot] [tracing]  ecadccb31b:
 kernel_selftests.ftrace.ftracetest.fail


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

commit: ecadccb31b8f1516dd045cc64fc7bc7a2d72947f ("[PATCH 1/2] tracing: kprobes: Prohibit probing on notrace functions")
url: https://github.com/0day-ci/linux/commits/Francis-Deslauriers/tracing-kprobes-Prohibit-probing-on-notrace-functions/20180714-072854


in testcase: kernel_selftests
with following parameters:

	group: kselftests-01

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: 8 threads Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz with 8G memory

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




KERNEL SELFTESTS: linux_headers_dir is /usr/src/linux-headers-x86_64-rhel-7.2-ecadccb31b8f1516dd045cc64fc7bc7a2d72947f
2018-07-18 22:17:02 ln -sf /usr/bin/clang-7 /usr/bin/clang
2018-07-18 22:17:02 ln -sf /usr/bin/llc-7 /usr/bin/llc

2018-07-18 22:17:47 make run_tests -C ftrace
make: Entering directory '/usr/src/perf_selftests-x86_64-rhel-7.2-ecadccb31b8f1516dd045cc64fc7bc7a2d72947f/tools/testing/selftests/ftrace'
TAP version 13
selftests: ftrace: ftracetest
========================================
=== Ftrace unit tests ===
[1] Basic trace file check	[PASS]
[2] Basic test for tracers	[PASS]
[3] Basic trace clock test	[PASS]
[4] Basic event tracing check	[PASS]
[5] event tracing - enable/disable with event level files	[PASS]
[6] event tracing - restricts events based on pid	[PASS]
[7] event tracing - enable/disable with subsystem level files	[PASS]
[8] event tracing - enable/disable with top level files	[PASS]
[9] ftrace - function graph filters with stack tracer	[PASS]
[10] ftrace - function graph filters	[PASS]
[11] ftrace - function glob filters	[PASS]
[12] ftrace - function pid filters	[PASS]
[13] ftrace - test for function event triggers	[PASS]
[14] ftrace - function profiler with function tracing	[PASS]
[15] ftrace - test reading of set_ftrace_filter	[PASS]
[16] ftrace - test for function traceon/off triggers	[PASS]
[17] Test creation and deletion of trace instances while setting an event	[PASS]
[18] Test creation and deletion of trace instances	[PASS]
[19] Kprobe dynamic event - adding and removing	[PASS]
[20] Kprobe dynamic event - busy event check	[PASS]
[21] Kprobe dynamic event with arguments	[PASS]
[22] Kprobe event string type argument	[FAIL]
[23] Kprobe event argument syntax	[PASS]
[24] Kprobes event arguments with types	[PASS]
[25] Kprobe event auto/manual naming	[PASS]
[26] Kprobe dynamic event with function tracer	[PASS]
[27] Kprobe dynamic event - probing module	[FAIL]
[28] Kretprobe dynamic event with arguments	[PASS]
[29] Kretprobe dynamic event with maxactive	[PASS]
[30] Register/unregister many kprobe events	[PASS]
[31] Kprobe events - probe points	[FAIL]
[32] event trigger - test extended error support	[PASS]
[33] event trigger - test field variable support	[PASS]
[34] event trigger - test inter-event combined histogram trigger	[PASS]
[35] event trigger - test multiple actions on hist trigger	[PASS]
[36] event trigger - test inter-event histogram trigger onmatch action	[PASS]
[37] event trigger - test inter-event histogram trigger onmatch-onmax action	[PASS]
[38] event trigger - test inter-event histogram trigger onmax action	[PASS]
[39] event trigger - test synthetic event create remove	[PASS]
[40] event trigger - test event enable/disable trigger	[PASS]
[41] event trigger - test trigger filter	[PASS]
[42] event trigger - test histogram modifiers	[PASS]
[43] event trigger - test histogram trigger	[PASS]
[44] event trigger - test multiple histogram triggers	[PASS]
[45] event trigger - test snapshot-trigger	[PASS]
[46] event trigger - test stacktrace-trigger	[PASS]
[47] trace_marker trigger - test histogram trigger	[PASS]
[48] trace_marker trigger - test snapshot trigger	[PASS]
[49] trace_marker trigger - test histogram with synthetic event against kernel event	[PASS]
[50] trace_marker trigger - test histogram with synthetic event	[PASS]
[51] event trigger - test traceon/off trigger	[PASS]
[52] (instance)  Basic test for tracers	[PASS]
[53] (instance)  Basic trace clock test	[PASS]
[54] (instance)  event tracing - enable/disable with event level files	[PASS]
[55] (instance)  event tracing - restricts events based on pid	[PASS]
[56] (instance)  event tracing - enable/disable with subsystem level files	[PASS]
[57] (instance)  ftrace - test for function event triggers	[PASS]
[58] (instance)  ftrace - test for function traceon/off triggers	[PASS]
[59] (instance)  event trigger - test event enable/disable trigger	[PASS]
[60] (instance)  event trigger - test trigger filter	[PASS]
[61] (instance)  event trigger - test histogram modifiers	[PASS]
[62] (instance)  event trigger - test histogram trigger	[PASS]
[63] (instance)  event trigger - test multiple histogram triggers	[PASS]
[64] (instance)  trace_marker trigger - test histogram trigger	[PASS]
[65] (instance)  trace_marker trigger - test snapshot trigger	[PASS]

# of passed:  62
# of failed:  3
# of unresolved:  0
# of untested:  0
# of unsupported:  0
# of xfailed:  0
# of undefined(test bug):  0
not ok 1..1 selftests: ftrace: ftracetest [FAIL]
make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.2-ecadccb31b8f1516dd045cc64fc7bc7a2d72947f/tools/testing/selftests/ftrace'


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-4.18.0-rc2-00089-gecadccb" of type "text/plain" (166060 bytes)

View attachment "job-script" of type "text/plain" (5964 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (36960 bytes)

View attachment "kernel_selftests" of type "text/plain" (55713 bytes)

View attachment "job.yaml" of type "text/plain" (5286 bytes)

View attachment "reproduce" of type "text/plain" (936 bytes)

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