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[Bug 1940080] Re: ubuntu-kernel-selftests.ftrace hangs on riscv64

 

** Merge proposal linked:
   https://code.launchpad.net/~canonical-kernel-team/+git/autotest-client-tests/+merge/446847

** Merge proposal linked:
   https://code.launchpad.net/~canonical-kernel-team/+git/autotest-client-tests/+merge/447331

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https://bugs.launchpad.net/bugs/1940080

Title:
  ubuntu-kernel-selftests.ftrace hangs on riscv64

Status in ubuntu-kernel-tests:
  New
Status in linux-riscv package in Ubuntu:
  Confirmed

Bug description:
  08/12 22:10:03 DEBUG|     utils:0153| [stdout] # === Ftrace unit tests ===
  08/12 22:10:07 DEBUG|     utils:0153| [stdout] # [1] Basic trace file check	[PASS]
  08/12 22:10:45 DEBUG|     utils:0153| [stdout] # [2] Basic test for tracers	[PASS]
  08/12 22:10:51 DEBUG|     utils:0153| [stdout] # [3] Basic trace clock test	[PASS]
  08/12 22:10:56 DEBUG|     utils:0153| [stdout] # [4] Basic event tracing check	[PASS]
  08/12 22:11:01 DEBUG|     utils:0153| [stdout] # [5] Change the ringbuffer size	[PASS]
  08/12 22:11:06 DEBUG|     utils:0153| [stdout] # [6] Snapshot and tracing setting	[PASS]
  08/12 22:11:11 DEBUG|     utils:0153| [stdout] # [7] trace_pipe and trace_marker	[PASS]
  08/12 22:11:15 DEBUG|     utils:0153| [stdout] # [8] Test ftrace direct functions against tracers	[UNRESOLVED]
  08/12 22:11:16 DEBUG|     utils:0153| [stdout] # [9] Test ftrace direct functions against kprobes	[UNSUPPORTED]
  08/12 22:11:20 DEBUG|     utils:0153| [stdout] # [10] Generic dynamic event - add/remove kprobe events	[FAIL]
  08/12 22:11:21 DEBUG|     utils:0153| [stdout] # [11] Generic dynamic event - add/remove synthetic events	[UNSUPPORTED]
  08/12 22:11:22 DEBUG|     utils:0153| [stdout] # [12] Generic dynamic event - selective clear (compatibility)	[UNSUPPORTED]
  08/12 22:11:22 DEBUG|     utils:0153| [stdout] # [13] Generic dynamic event - generic clear event	[UNSUPPORTED]
  08/12 22:11:27 DEBUG|     utils:0153| [stdout] # [14] event tracing - enable/disable with event level files	[PASS]
  08/12 22:11:34 DEBUG|     utils:0153| [stdout] # [15] event tracing - restricts events based on pid notrace filtering	[PASS]
  08/12 22:11:40 DEBUG|     utils:0153| [stdout] # [16] event tracing - restricts events based on pid	[PASS]
  08/12 22:11:45 DEBUG|     utils:0153| [stdout] # [17] event tracing - enable/disable with subsystem level files	[PASS]
  08/12 22:11:51 DEBUG|     utils:0153| [stdout] # [18] event tracing - enable/disable with top level files	[PASS]
  08/12 22:11:58 DEBUG|     utils:0153| [stdout] # [19] Test trace_printk from module	[PASS]
  08/12 22:12:15 DEBUG|     utils:0153| [stdout] # [20] ftrace - function graph filters with stack tracer	[PASS]
  08/12 22:12:24 DEBUG|     utils:0153| [stdout] # [21] ftrace - function graph filters	[PASS]
  08/12 22:12:35 DEBUG|     utils:0153| [stdout] # [22] ftrace - function pid notrace filters	[PASS]
  08/12 22:12:46 DEBUG|     utils:0153| [stdout] # [23] ftrace - function pid filters	[PASS]
  08/12 22:12:54 DEBUG|     utils:0153| [stdout] # [24] ftrace - stacktrace filter command	[PASS]
  08/12 22:13:03 DEBUG|     utils:0153| [stdout] # [25] ftrace - function trace with cpumask	[PASS]
  08/12 22:13:28 DEBUG|     utils:0153| [stdout] # [26] ftrace - test for function event triggers	[FAIL]
  08/12 22:13:42 DEBUG|     utils:0153| [stdout] # [27] ftrace - function trace on module	[PASS]

  ** hang, whilst a lot more test cases are expected **

  I.e. the next test case result should have been
  # [28] ftrace - function profiling

  
  Failure:

  # [10] Generic dynamic event - add/remove kprobe events	[FAIL]
  # [26] ftrace - test for function event triggers	[FAIL]

  nothing exciting in the dmesg.

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