canonical-ubuntu-qa team mailing list archive

[Brian Murray <1837040@xxxxxxxxxxxxxxxxxx>]

Ubuntu 21.10 (Impish Indri) has reached end of life, so this bug will
not be fixed for that specific release.

** Changed in: linux (Ubuntu Impish)
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/1837040

Title:
  function traceon/off triggers in ftace from ubuntu_kernel_selftests
  failed on ARM64 / B-hwe P9

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Disco:
  Invalid
Status in linux source package in Hirsute:
  Won't Fix
Status in linux source package in Impish:
  Won't Fix

Bug description:
  Test failed with the disco master-next branch, issue spotted on
  Thunder X ARM64 (passed with Moonshot ARM64):

  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] Change the ringbuffer size	[PASS]
  [6] Snapshot and tracing setting	[PASS]
  [7] trace_pipe and trace_marker	[PASS]
  [8] Generic dynamic event - add/remove kprobe events	[PASS]
  [9] Generic dynamic event - add/remove synthetic events	[PASS]
  [10] Generic dynamic event - selective clear (compatibility)	[PASS]
  [11] Generic dynamic event - generic clear event	[PASS]
  [12] event tracing - enable/disable with event level files	[PASS]
  [13] event tracing - restricts events based on pid	[PASS]
  [14] event tracing - enable/disable with subsystem level files	[PASS]
  [15] event tracing - enable/disable with top level files	[PASS]
  [16] Test trace_printk from module	[PASS]
  [17] ftrace - function graph filters with stack tracer	[PASS]
  [18] ftrace - function graph filters	[PASS]
  [19] ftrace - function glob filters	[PASS]
  [20] ftrace - function pid filters	[PASS]
  [21] ftrace - stacktrace filter command	[PASS]
  [22] ftrace - function trace with cpumask	[PASS]
  [23] ftrace - test for function event triggers	[PASS]
  [24] ftrace - function trace on module	[PASS]
  [25] ftrace - function profiling	[PASS]
  [26] ftrace - function profiler with function tracing	[PASS]
  [27] ftrace - test reading of set_ftrace_filter	[PASS]
  [28] ftrace - Max stack tracer	[PASS]
  [29] ftrace - test for function traceon/off triggers	[FAIL]
  [30] Test creation and deletion of trace instances while setting an event	[PASS]
  [31] Test creation and deletion of trace instances	[PASS]
  [32] Kprobe dynamic event - adding and removing	[PASS]
  [33] Kprobe dynamic event - busy event check	[PASS]
  [34] Kprobe dynamic event with arguments	[PASS]
  [35] Kprobe event with comm arguments	[PASS]
  [36] Kprobe event string type argument	[PASS]
  [37] Kprobe event symbol argument	[PASS]
  [38] Kprobe event argument syntax	[PASS]
  [39] Kprobes event arguments with types	[PASS]
  [40] Kprobe event auto/manual naming	[PASS]
  [41] Kprobe dynamic event with function tracer	[PASS]
  [42] Kprobe dynamic event - probing module	[PASS]
  [43] Kretprobe dynamic event with arguments	[PASS]
  [44] Kretprobe dynamic event with maxactive	[PASS]
  [45] Register/unregister many kprobe events	[PASS]
  [46] Kprobe events - probe points	[PASS]
  [47] Kprobe dynamic event - adding and removing	[PASS]
  [48] test for the preemptirqsoff tracer	[UNSUPPORTED]
  [49] Test wakeup tracer	[PASS]
  [50] Test wakeup RT tracer	[PASS]
  [51] event trigger - test extended error support	[PASS]
  [52] event trigger - test field variable support	[PASS]
  [53] event trigger - test inter-event combined histogram trigger	[PASS]
  [54] event trigger - test multiple actions on hist trigger	[PASS]
  [55] event trigger - test inter-event histogram trigger onmatch action	[PASS]
  [56] event trigger - test inter-event histogram trigger onmatch-onmax action	[PASS]
  [57] event trigger - test inter-event histogram trigger onmax action	[PASS]
  [58] event trigger - test synthetic event create remove	[PASS]
  [59] event trigger - test synthetic_events syntax parser	[PASS]
  [60] event trigger - test event enable/disable trigger	[PASS]
  [61] event trigger - test trigger filter	[PASS]
  [62] event trigger - test histogram modifiers	[PASS]
  [63] event trigger - test histogram trigger	[PASS]
  [64] event trigger - test multiple histogram triggers	[PASS]
  [65] event trigger - test snapshot-trigger	[PASS]
  [66] event trigger - test stacktrace-trigger	[PASS]
  [67] trace_marker trigger - test histogram trigger	[PASS]
  [68] trace_marker trigger - test snapshot trigger	[PASS]
  [69] trace_marker trigger - test histogram with synthetic event against kernel event	[PASS]
  [70] trace_marker trigger - test histogram with synthetic event	[PASS]
  [71] event trigger - test traceon/off trigger	[PASS]
  [72] (instance)  Basic test for tracers	[PASS]
  [73] (instance)  Basic trace clock test	[PASS]
  [74] (instance)  Change the ringbuffer size	[PASS]
  [75] (instance)  Snapshot and tracing setting	[PASS]
  [76] (instance)  trace_pipe and trace_marker	[PASS]
  [77] (instance)  event tracing - enable/disable with event level files	[PASS]
  [78] (instance)  event tracing - restricts events based on pid	[PASS]
  [79] (instance)  event tracing - enable/disable with subsystem level files	[PASS]
  [80] (instance)  ftrace - stacktrace filter command	[PASS]
  [81] (instance)  ftrace - test for function event triggers	[PASS]
  [82] (instance)  ftrace - test for function traceon/off triggers	[PASS]
  [83] (instance)  event trigger - test event enable/disable trigger	[PASS]
  [84] (instance)  event trigger - test trigger filter	[PASS]
  [85] (instance)  event trigger - test histogram modifiers	[PASS]
  [86] (instance)  event trigger - test histogram trigger	[PASS]
  [87] (instance)  event trigger - test multiple histogram triggers	[PASS]
  [88] (instance)  trace_marker trigger - test histogram trigger	[PASS]
  [89] (instance)  trace_marker trigger - test snapshot trigger	[PASS]

  # of passed:  87
  # of failed:  1
  # of unresolved:  0
  # of untested:  0
  # of unsupported:  1
  # of xfailed:  0
  # of undefined(test bug):  0
  not ok 1..1 selftests: ftrace: ftracetest [FAIL]

  However it can pass with the upstream tree:
  # [28] ftrace - Max stack tracer	[PASS]
  # [29] ftrace - test for function traceon/off triggers	[PASS]
  # [30] ftrace - test tracing error log support	[FAIL]
  # [31] Test creation and deletion of trace instances while setting an event	[PASS]
  # [32] Test creation and deletion of trace instances	[PASS]

  So it looks like a test case issue in our kernel tree from this point.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: linux-image-5.0.0-20-generic 5.0.0-20.21
  ProcVersionSignature: User Name 5.0.0-20.21-generic 5.0.8
  Uname: Linux 5.0.0-20-generic aarch64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jul 18 04:23 seq
   crw-rw---- 1 root audio 116, 33 Jul 18 04:23 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.10-0ubuntu27.1
  Architecture: arm64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Thu Jul 18 12:03:43 2019
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: Cavium ThunderX CRB
  PciMultimedia:

  ProcFB:
   0 EFI VGA
   1 astdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-20-generic root=UUID=d4e5f461-24ef-47d8-a67f-42c82ff1efe8 ro
  RelatedPackageVersions:
   linux-restricted-modules-5.0.0-20-generic N/A
   linux-backports-modules-5.0.0-20-generic  N/A
   linux-firmware                            1.178.2
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/12/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 5.11
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: To be filled by O.E.M.
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To be filled by O.E.M.
  dmi.chassis.type: 0
  dmi.chassis.vendor: Cavium
  dmi.chassis.version: To be filled by O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.11:bd12/12/2012:svnCavium:pnThunderXCRB:pvrTobefilledbyO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnCavium:ct0:cvrTobefilledbyO.E.M.:
  dmi.product.family: Default string
  dmi.product.name: ThunderX CRB
  dmi.product.sku: Default string
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Cavium

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