On Eoan, we no longer see the failure for traceon/off triggers ;
however,

[45] Register/unregister many kprobe events     [FAIL]

Is failing, on arm64. Giving there are so many ftracetests open in the
project that are stale, i'm going to close this bug as its originally
intended to target against Disco, and re-open a new one for the new
failure on Eoan, if in fact is does not align with any of the already
existing bugs.

04/12 21:49:30 DEBUG|     utils:0153| [stdout] 1..1
04/12 21:49:30 DEBUG|     utils:0153| [stdout] # selftests: ftrace: ftracetest
04/12 21:49:30 DEBUG|     utils:0153| [stdout] # === Ftrace unit tests ===
04/12 21:49:34 DEBUG|     utils:0153| [stdout] # [1] Basic trace file check     
[PASS]
04/12 21:50:35 DEBUG|     utils:0153| [stdout] # [2] Basic test for tracers     
[PASS]
04/12 21:51:46 DEBUG|     utils:0153| [stdout] # [3] Basic trace clock test     
[PASS]
04/12 21:51:50 DEBUG|     utils:0153| [stdout] # [4] Basic event tracing check  
[PASS]
04/12 21:51:54 DEBUG|     utils:0153| [stdout] # [5] Change the ringbuffer size 
[PASS]
04/12 21:52:02 DEBUG|     utils:0153| [stdout] # [6] Snapshot and tracing 
setting       [PASS]
04/12 21:52:09 DEBUG|     utils:0153| [stdout] # [7] trace_pipe and 
trace_marker        [PASS]
04/12 21:52:17 DEBUG|     utils:0153| [stdout] # [8] Generic dynamic event - 
add/remove kprobe events   [PASS]
04/12 21:52:24 DEBUG|     utils:0153| [stdout] # [9] Generic dynamic event - 
add/remove synthetic events        [PASS]
04/12 21:52:28 DEBUG|     utils:0153| [stdout] # [10] Generic dynamic event - 
selective clear (compatibility)   [PASS]
04/12 21:52:32 DEBUG|     utils:0153| [stdout] # [11] Generic dynamic event - 
generic clear event       [PASS]
04/12 21:52:44 DEBUG|     utils:0153| [stdout] # [12] event tracing - 
enable/disable with event level files     [PASS]
04/12 21:52:59 DEBUG|     utils:0153| [stdout] # [13] event tracing - restricts 
events based on pid     [PASS]
04/12 21:53:10 DEBUG|     utils:0153| [stdout] # [14] event tracing - 
enable/disable with subsystem level files [PASS]
04/12 21:53:21 DEBUG|     utils:0153| [stdout] # [15] event tracing - 
enable/disable with top level files       [PASS]
04/12 21:53:26 DEBUG|     utils:0153| [stdout] # [16] Test trace_printk from 
module     [PASS]
04/12 21:53:48 DEBUG|     utils:0153| [stdout] # [17] ftrace - function graph 
filters with stack tracer [PASS]
04/12 21:54:04 DEBUG|     utils:0153| [stdout] # [18] ftrace - function graph 
filters   [PASS]
04/12 21:54:42 DEBUG|     utils:0153| [stdout] # [19] ftrace - function pid 
filters     [PASS]
04/12 21:54:50 DEBUG|     utils:0153| [stdout] # [20] ftrace - stacktrace 
filter command        [PASS]
04/12 21:55:06 DEBUG|     utils:0153| [stdout] # [21] ftrace - function trace 
with cpumask      [PASS]
04/12 21:55:24 DEBUG|     utils:0153| [stdout] # [22] ftrace - test for 
function event triggers [PASS]
04/12 21:55:28 DEBUG|     utils:0153| [stdout] # [23] ftrace - function trace 
on module [PASS]
04/12 21:55:34 DEBUG|     utils:0153| [stdout] # [24] ftrace - function 
profiling       [PASS]
04/12 21:55:53 DEBUG|     utils:0153| [stdout] # [25] ftrace - function 
profiler with function tracing  [PASS]
04/12 21:56:02 DEBUG|     utils:0153| [stdout] # [26] ftrace - test reading of 
set_ftrace_filter        [PASS]
04/12 21:56:16 DEBUG|     utils:0153| [stdout] # [27] ftrace - test for 
function traceon/off triggers   [PASS]
04/12 21:56:20 DEBUG|     utils:0153| [stdout] # [28] ftrace - test tracing 
error log support   [PASS]
04/12 21:56:28 DEBUG|     utils:0153| [stdout] # [29] Test creation and 
deletion of trace instances while setting an event      [PASS]
04/12 21:56:34 DEBUG|     utils:0153| [stdout] # [30] Test creation and 
deletion of trace instances     [PASS]
04/12 21:56:38 DEBUG|     utils:0153| [stdout] # [31] Kprobe dynamic event - 
adding and removing        [PASS]
04/12 21:56:42 DEBUG|     utils:0153| [stdout] # [32] Kprobe dynamic event - 
busy event check   [PASS]
04/12 21:56:49 DEBUG|     utils:0153| [stdout] # [33] Kprobe dynamic event with 
arguments       [PASS]
04/12 21:56:53 DEBUG|     utils:0153| [stdout] # [34] Kprobe event with comm 
arguments  [PASS]
04/12 21:56:57 DEBUG|     utils:0153| [stdout] # [35] Kprobe event string type 
argument [PASS]
04/12 21:57:01 DEBUG|     utils:0153| [stdout] # [36] Kprobe event symbol 
argument      [PASS]
04/12 21:57:06 DEBUG|     utils:0153| [stdout] # [37] Kprobe event argument 
syntax      [PASS]
04/12 21:57:25 DEBUG|     utils:0153| [stdout] # [38] Kprobes event arguments 
with types        [PASS]
04/12 21:57:29 DEBUG|     utils:0153| [stdout] # [39] Kprobe event user-memory 
access   [PASS]
04/12 21:57:33 DEBUG|     utils:0153| [stdout] # [40] Kprobe event auto/manual 
naming   [PASS]
04/12 21:58:03 DEBUG|     utils:0153| [stdout] # [41] Kprobe dynamic event with 
function tracer [PASS]
04/12 21:58:08 DEBUG|     utils:0153| [stdout] # [42] Kprobe event parser error 
log check       [PASS]
04/12 21:58:15 DEBUG|     utils:0153| [stdout] # [43] Kretprobe dynamic event 
with arguments    [PASS]
04/12 21:58:19 DEBUG|     utils:0153| [stdout] # [44] Kretprobe dynamic event 
with maxactive    [PASS]
04/12 21:58:24 DEBUG|     utils:0153| [stdout] # [45] Register/unregister many 
kprobe events    [FAIL]
04/12 21:58:32 DEBUG|     utils:0153| [stdout] # [46] Kprobe dynamic event - 
adding and removing        [PASS]
04/12 21:58:36 DEBUG|     utils:0153| [stdout] # [47] Uprobe event parser error 
log check       [PASS]
04/12 21:58:39 DEBUG|     utils:0153| [stdout] # [48] test for the 
preemptirqsoff tracer        [UNSUPPORTED]
04/12 21:58:59 DEBUG|     utils:0153| [stdout] # [49] Meta-selftest     [PASS]
04/12 21:59:12 DEBUG|     utils:0153| [stdout] # [50] Test wakeup tracer        
[PASS]
04/12 21:59:35 DEBUG|     utils:0153| [stdout] # [51] Test wakeup RT tracer     
[PASS]
04/12 21:59:50 DEBUG|     utils:0153| [stdout] # [52] event trigger - test 
inter-event histogram trigger expected fail actions  [XFAIL]
04/12 22:00:11 DEBUG|     utils:0153| [stdout] # [53] event trigger - test 
field variable support       [PASS]
04/12 22:00:30 DEBUG|     utils:0153| [stdout] # [54] event trigger - test 
multiple actions on hist trigger     [PASS]
04/12 22:00:38 DEBUG|     utils:0153| [stdout] # [55] event trigger - test 
inter-event histogram trigger onchange action        [PASS]
04/12 22:01:00 DEBUG|     utils:0153| [stdout] # [56] event trigger - test 
inter-event histogram trigger onmatch action [PASS]
04/12 22:01:23 DEBUG|     utils:0153| [stdout] # [57] event trigger - test 
inter-event histogram trigger onmatch-onmax action   [PASS]
04/12 22:01:44 DEBUG|     utils:0153| [stdout] # [58] event trigger - test 
inter-event histogram trigger onmax action   [PASS]
04/12 22:01:52 DEBUG|     utils:0153| [stdout] # [59] event trigger - test 
inter-event histogram trigger snapshot action        [PASS]
04/12 22:02:07 DEBUG|     utils:0153| [stdout] # [60] event trigger - test 
synthetic_events syntax parser       [PASS]
04/12 22:02:30 DEBUG|     utils:0153| [stdout] # [61] event trigger - test 
inter-event histogram trigger trace action   [PASS]
04/12 22:02:34 DEBUG|     utils:0153| [stdout] # [62] event trigger - test 
event enable/disable trigger [PASS]
04/12 22:02:38 DEBUG|     utils:0153| [stdout] # [63] event trigger - test 
trigger filter       [PASS]
04/12 22:02:42 DEBUG|     utils:0153| [stdout] # [64] event trigger - test 
histogram modifiers  [PASS]
04/12 22:02:46 DEBUG|     utils:0153| [stdout] # [65] event trigger - test 
multiple histogram triggers  [PASS]
04/12 22:02:54 DEBUG|     utils:0153| [stdout] # [66] event trigger - test 
snapshot-trigger     [PASS]
04/12 22:03:05 DEBUG|     utils:0153| [stdout] # [67] event trigger - test 
stacktrace-trigger   [PASS]
04/12 22:03:13 DEBUG|     utils:0153| [stdout] # [68] trace_marker trigger - 
test snapshot trigger      [PASS]
04/12 22:03:36 DEBUG|     utils:0153| [stdout] # [69] trace_marker trigger - 
test histogram with synthetic event against kernel event   [PASS]
04/12 22:03:55 DEBUG|     utils:0153| [stdout] # [70] trace_marker trigger - 
test histogram with synthetic event        [PASS]
04/12 22:03:59 DEBUG|     utils:0153| [stdout] # [71] event trigger - test 
traceon/off trigger  [PASS]
04/12 22:04:53 DEBUG|     utils:0153| [stdout] # [72] (instance)  Basic test 
for tracers        [PASS]
04/12 22:06:03 DEBUG|     utils:0153| [stdout] # [73] (instance)  Basic trace 
clock test        [PASS]
04/12 22:06:07 DEBUG|     utils:0153| [stdout] # [74] (instance)  Change the 
ringbuffer size    [PASS]
04/12 22:06:15 DEBUG|     utils:0153| [stdout] # [75] (instance)  Snapshot and 
tracing setting  [PASS]
04/12 22:06:19 DEBUG|     utils:0153| [stdout] # [76] (instance)  trace_pipe 
and trace_marker   [PASS]
04/12 22:06:31 DEBUG|     utils:0153| [stdout] # [77] (instance)  event tracing 
- enable/disable with event level files [PASS]
04/12 22:06:46 DEBUG|     utils:0153| [stdout] # [78] (instance)  event tracing 
- restricts events based on pid [PASS]
04/12 22:06:57 DEBUG|     utils:0153| [stdout] # [79] (instance)  event tracing 
- enable/disable with subsystem level files     [PASS]
04/12 22:07:03 DEBUG|     utils:0153| [stdout] # [80] (instance)  ftrace - 
stacktrace filter command    [PASS]
04/12 22:07:17 DEBUG|     utils:0153| [stdout] # [81] (instance)  ftrace - test 
for function event triggers     [PASS]
04/12 22:07:31 DEBUG|     utils:0153| [stdout] # [82] (instance)  ftrace - test 
for function traceon/off triggers       [PASS]
04/12 22:07:35 DEBUG|     utils:0153| [stdout] # [83] (instance)  event trigger 
- test event enable/disable trigger     [PASS]
04/12 22:07:39 DEBUG|     utils:0153| [stdout] # [84] (instance)  event trigger 
- test trigger filter   [PASS]
04/12 22:07:44 DEBUG|     utils:0153| [stdout] # [85] (instance)  event trigger 
- test histogram modifiers      [PASS]
04/12 22:07:48 DEBUG|     utils:0153| [stdout] # [86] (instance)  event trigger 
- test multiple histogram triggers      [PASS]
04/12 22:07:52 DEBUG|     utils:0153| [stdout] # [87] (instance)  trace_marker 
trigger - test snapshot trigger  [PASS]
04/12 22:07:53 DEBUG|     utils:0153| [stdout] # 
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # 
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of passed:  84
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of failed:  1
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of unresolved:  0
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of untested:  0
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of unsupported:  1
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of xfailed:  1
04/12 22:07:56 DEBUG|     utils:0153| [stdout] # # of undefined(test bug):  0
04/12 22:07:56 DEBUG|     utils:0153| [stdout] not ok 1 selftests: ftrace: 
ftracetest # exit=1
04/12 22:07:56 DEBUG|     utils:0153| [stdout] make[1]: Leaving directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/ftrace'
04/12 22:07:56 DEBUG|     utils:0153| [stdout] make: Leaving directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'
04/12 22:07:56 INFO |ubuntu_ker:0189| ========== Summary ===========

** Changed in: ubuntu-kernel-tests
       Status: Triaged => Invalid

** Changed in: linux (Ubuntu Disco)
       Status: Confirmed => Invalid

** Changed in: linux (Ubuntu)
       Status: Confirmed => Invalid

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

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

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