ubuntu-kernel-selftests.ftrace hangs on riscv64

[Dimitri John Ledkov]

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.

[Po-Hsu Lin (cypressyew)]

With Impish 5.13 riscv, this ftracetest is hanging on the same point:

 # 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] Test ftrace direct functions against tracers [UNRESOLVED]
 # [9] Test ftrace direct functions against kprobes [UNRESOLVED]
 # [10] Generic dynamic event - add/remove kprobe events [PASS]
 # [11] Generic dynamic event - add/remove synthetic events [UNSUPPORTED]
 # [12] Generic dynamic event - selective clear (compatibility) [UNSUPPORTED]
 # [13] Generic dynamic event - generic clear event [UNSUPPORTED]
 # [14] event tracing - enable/disable with event level files [PASS]
 # [15] event tracing - restricts events based on pid notrace filtering [PASS]
 # [16] event tracing - restricts events based on pid [PASS]
 # [17] event tracing - enable/disable with subsystem level files [PASS]
 # [18] event tracing - enable/disable with top level files [PASS]
 # [19] Test trace_printk from module [PASS]
 # [20] ftrace - function graph filters with stack tracer [PASS]
 # [21] ftrace - function graph filters [PASS]
 # [22] ftrace - function trace with cpumask [PASS]
 # [23] ftrace - test for function event triggers [FAIL]
 # [24] ftrace - function pid notrace filters [PASS]
 # [25] ftrace - function pid filters [PASS]
 # [26] ftrace - stacktrace filter command [PASS]
 # [27] ftrace - function trace on module [PASS]
* hang here

Failure:
 # [23] ftrace - test for function event triggers [FAIL]

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.