Public bug reported: All ftrace tests from selftests are failing with bionic:linux 4.15.0-168.176 on s390x:
https://autopkgtest.ubuntu.com/results/autopkgtest- bionic/bionic/s390x/l/linux/20220201_190955_5689e@/log.gz ========================================================================== selftests: ftracetest ======================================== === Ftrace unit tests === [1] Basic trace file check [FAIL] [2] Basic test for tracers [FAIL] [3] Basic trace clock test [FAIL] [4] Basic event tracing check [FAIL] [5] Snapshot and tracing setting [FAIL] [6] event tracing - enable/disable with event level files [FAIL] [7] event tracing - restricts events based on pid [FAIL] [8] event tracing - enable/disable with subsystem level files [FAIL] [9] event tracing - enable/disable with top level files [FAIL] [10] ftrace - function graph filters with stack tracer [FAIL] [11] ftrace - function graph filters [FAIL] [12] ftrace - function pid filters [FAIL] [13] ftrace - test for function event triggers [FAIL] [14] ftrace - function profiler with function tracing [FAIL] [15] ftrace - test reading of set_ftrace_filter [FAIL] [16] ftrace - test for function traceon/off triggers [FAIL] [17] Test creation and deletion of trace instances while setting an event [FAIL] [18] Test creation and deletion of trace instances [FAIL] [19] Kprobe dynamic event - adding and removing [FAIL] [20] Kprobe dynamic event - busy event check [FAIL] [21] Kprobe dynamic event with arguments [FAIL] [22] Kprobe event string type argument [FAIL] [23] Kprobe event argument syntax [FAIL] [24] Kprobes event arguments with types [FAIL] [25] Kprobe event auto/manual naming [FAIL] [26] Kprobe dynamic event with function tracer [FAIL] [27] Kretprobe dynamic event with arguments [FAIL] [28] Kretprobe dynamic event with maxactive [FAIL] [29] Register/unregister many kprobe events [FAIL] [30] event trigger - test multiple actions on hist trigger [FAIL] [31] event trigger - test synthetic_events syntax parser [FAIL] [32] event trigger - test event enable/disable trigger [FAIL] [33] event trigger - test trigger filter [FAIL] [34] event trigger - test histogram modifiers [FAIL] [35] event trigger - test multiple histogram triggers [FAIL] [36] event trigger - test snapshot-trigger [FAIL] [37] event trigger - test stacktrace-trigger [FAIL] [38] event trigger - test traceon/off trigger [FAIL] [39] (instance) Basic test for tracers [FAIL] [40] (instance) Basic trace clock test [FAIL] [41] (instance) Snapshot and tracing setting [FAIL] [42] (instance) event tracing - enable/disable with event level files [FAIL] [43] (instance) event tracing - restricts events based on pid [FAIL] [44] (instance) event tracing - enable/disable with subsystem level files [FAIL] [45] (instance) ftrace - test for function event triggers [FAIL] [46] (instance) ftrace - test for function traceon/off triggers [FAIL] [47] (instance) event trigger - test event enable/disable trigger [FAIL] [48] (instance) event trigger - test trigger filter [FAIL] [49] (instance) event trigger - test histogram modifiers [FAIL] [50] (instance) event trigger - test multiple histogram triggers [FAIL] # of passed: 0 # of failed: 50 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 not ok 1..1 selftests: ftracetest [FAIL] ========================================================================== After some debugging I've found out that the testcases are not actually run, the failure happens while running 'tools/testing/selftests/ftrace/test.d/functions:initialize_ftrace()', on the following line: [ -f set_ftrace_filter ] && echo | tee set_ftrace_* After a reboot for clean ftrace state, with kernel 4.15.0-168-generic: root@kleber-bionic:/sys/kernel/debug/tracing# head set_ftrace_* head: cannot open 'set_ftrace_filter' for reading: No such device head: cannot open 'set_ftrace_notrace' for reading: No such device ==> set_ftrace_pid <== no pid With kernel 4.15.0-167-generic: root@kleber-bionic-2:/sys/kernel/debug/tracing# head set_ftrace_* ==> set_ftrace_filter <== #### all functions enabled #### ==> set_ftrace_notrace <== #### no functions disabled #### ==> set_ftrace_pid <== no pid ** Affects: ubuntu-kernel-tests Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: Invalid ** Affects: linux (Ubuntu Bionic) Importance: Undecided Status: Confirmed ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Invalid ** Changed in: linux (Ubuntu Bionic) Status: New => Confirmed ** Description changed: All ftrace tests from selftests are failing with bionic:linux 4.15.0-168.176 on s390x: https://autopkgtest.ubuntu.com/results/autopkgtest- bionic/bionic/s390x/l/linux/20220201_190955_5689e@/log.gz - ================================================================================ + ========================================================================== selftests: ftracetest ======================================== === Ftrace unit tests === [1] Basic trace file check [FAIL] [2] Basic test for tracers [FAIL] [3] Basic trace clock test [FAIL] [4] Basic event tracing check [FAIL] [5] Snapshot and tracing setting [FAIL] [6] event tracing - enable/disable with event level files [FAIL] [7] event tracing - restricts events based on pid [FAIL] [8] event tracing - enable/disable with subsystem level files [FAIL] [9] event tracing - enable/disable with top level files [FAIL] [10] ftrace - function graph filters with stack tracer [FAIL] [11] ftrace - function graph filters [FAIL] [12] ftrace - function pid filters [FAIL] [13] ftrace - test for function event triggers [FAIL] [14] ftrace - function profiler with function tracing [FAIL] [15] ftrace - test reading of set_ftrace_filter [FAIL] [16] ftrace - test for function traceon/off triggers [FAIL] [17] Test creation and deletion of trace instances while setting an event [FAIL] [18] Test creation and deletion of trace instances [FAIL] [19] Kprobe dynamic event - adding and removing [FAIL] [20] Kprobe dynamic event - busy event check [FAIL] [21] Kprobe dynamic event with arguments [FAIL] [22] Kprobe event string type argument [FAIL] [23] Kprobe event argument syntax [FAIL] [24] Kprobes event arguments with types [FAIL] [25] Kprobe event auto/manual naming [FAIL] [26] Kprobe dynamic event with function tracer [FAIL] [27] Kretprobe dynamic event with arguments [FAIL] [28] Kretprobe dynamic event with maxactive [FAIL] [29] Register/unregister many kprobe events [FAIL] [30] event trigger - test multiple actions on hist trigger [FAIL] [31] event trigger - test synthetic_events syntax parser [FAIL] [32] event trigger - test event enable/disable trigger [FAIL] [33] event trigger - test trigger filter [FAIL] [34] event trigger - test histogram modifiers [FAIL] [35] event trigger - test multiple histogram triggers [FAIL] [36] event trigger - test snapshot-trigger [FAIL] [37] event trigger - test stacktrace-trigger [FAIL] [38] event trigger - test traceon/off trigger [FAIL] [39] (instance) Basic test for tracers [FAIL] [40] (instance) Basic trace clock test [FAIL] [41] (instance) Snapshot and tracing setting [FAIL] [42] (instance) event tracing - enable/disable with event level files [FAIL] [43] (instance) event tracing - restricts events based on pid [FAIL] [44] (instance) event tracing - enable/disable with subsystem level files [FAIL] [45] (instance) ftrace - test for function event triggers [FAIL] [46] (instance) ftrace - test for function traceon/off triggers [FAIL] [47] (instance) event trigger - test event enable/disable trigger [FAIL] [48] (instance) event trigger - test trigger filter [FAIL] [49] (instance) event trigger - test histogram modifiers [FAIL] [50] (instance) event trigger - test multiple histogram triggers [FAIL] # of passed: 0 # of failed: 50 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 not ok 1..1 selftests: ftracetest [FAIL] - ================================================================================ + ========================================================================== After some debugging I've found out that the testcases are not actually run, the failure happens while running 'tools/testing/selftests/ftrace/test.d/functions:initialize_ftrace()', on the following line: [ -f set_ftrace_filter ] && echo | tee set_ftrace_* After a reboot for clean ftrace state, with kernel 4.15.0-168-generic: root@kleber-bionic:/sys/kernel/debug/tracing# head set_ftrace_* head: cannot open 'set_ftrace_filter' for reading: No such device head: cannot open 'set_ftrace_notrace' for reading: No such device ==> set_ftrace_pid <== no pid With kernel 4.15.0-167-generic: root@kleber-bionic-2:/sys/kernel/debug/tracing# head set_ftrace_* ==> set_ftrace_filter <== #### all functions enabled #### ==> set_ftrace_notrace <== #### no functions disabled #### ==> set_ftrace_pid <== no pid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1959752 Title: ubuntu_kernel_selftests.ftrace:ftracetest fails with bionic:linux 4.15.0-168.176 on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1959752/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
