*** This bug is a duplicate of bug 2029405 ***
https://bugs.launchpad.net/bugs/2029405
** This bug has been marked a duplicate of bug 2029405
Change in trace file leads to test timeout in ftrace tests on 5.15 ARM64
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https://bugs.launchpad.net/bugs/1959424
Title:
ubuntu_kernel_selftests / ftrace:ftracetest hangs on arm64 on Jammy
realtime
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
d2021.10.26/jammy/linux-realtime/5.15.0-1004.4, only on node
appleton-kernel.arm64, hangs (timeouts) on ubuntu_kernel_selftests /
ftrace:ftracetest test:
--------
01:28:34 DEBUG| [stdout] # === Ftrace unit tests ===
01:28:34 DEBUG| [stdout] # [1] Basic trace file check [PASS]
01:28:38 DEBUG| [stdout] # [2] Basic test for tracers [PASS]
01:28:38 DEBUG| [stdout] # [3] Basic trace clock test [PASS]
01:28:38 DEBUG| [stdout] # [4] Basic event tracing check [PASS]
01:28:39 DEBUG| [stdout] # [5] Change the ringbuffer size [PASS]
01:28:39 DEBUG| [stdout] # [6] Snapshot and tracing setting [PASS]
01:28:40 DEBUG| [stdout] # [7] trace_pipe and trace_marker [PASS]
01:28:40 DEBUG| [stdout] # [8] Test ftrace direct functions against tracers
[UNRESOLVED]
01:28:40 DEBUG| [stdout] # [9] Test ftrace direct functions against kprobes
[UNRESOLVED]
01:28:40 DEBUG| [stdout] # [10] Generic dynamic event - add/remove eprobe
events [PASS]
01:28:41 DEBUG| [stdout] # [11] Generic dynamic event - add/remove kprobe
events [PASS]
01:28:41 DEBUG| [stdout] # [12] Generic dynamic event - add/remove synthetic
events [PASS]
01:28:41 DEBUG| [stdout] # [13] Generic dynamic event - selective clear
(compatibility) [PASS]
01:28:41 DEBUG| [stdout] # [14] Generic dynamic event - generic clear event
[PASS]
01:28:42 DEBUG| [stdout] # [15] Generic dynamic event - check if duplicate
events are caught [PASS]
01:58:36 INFO | Timer expired (1800 sec.), nuking pid 161336
--------
The issue was not reproduced on mcdivitt36 (HP ProLiant m400 server
cartridge with AppliedMicro X-Gene 64-bit ARM).
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