tested against 5.8 ftrace tests: NO crashing now, fixed. cking@riscv64:~/linux/tools/testing/selftests/ftrace$ sudo ./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 [UNSUPPORTED] [10] Generic dynamic event - add/remove kprobe events [FAIL] [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 [UNRESOLVED] [20] ftrace - function graph filters with stack tracer [PASS] [21] ftrace - function graph filters [PASS] [22] ftrace - function glob filters [PASS] [23] ftrace - function pid notrace filters [PASS] [24] ftrace - function pid filters [PASS] [25] ftrace - stacktrace filter command [PASS] [26] ftrace - function trace with cpumask [PASS] [27] ftrace - test for function event triggers [PASS] [28] ftrace - function trace on module [UNRESOLVED] [29] ftrace - function profiling [PASS] [30] ftrace - function profiler with function tracing [PASS] [31] ftrace - test reading of set_ftrace_filter [PASS] [32] ftrace - Max stack tracer [PASS] [33] ftrace - test for function traceon/off triggers [PASS] [34] ftrace - test tracing error log support [PASS] [35] Test creation and deletion of trace instances while setting an event [PASS] [36] Test creation and deletion of trace instances [PASS] [37] Kprobe dynamic event - adding and removing [UNSUPPORTED] [38] Kprobe dynamic event - busy event check [UNSUPPORTED] [39] Kprobe dynamic event with arguments [UNSUPPORTED] [40] Kprobe event with comm arguments [UNSUPPORTED] [41] Kprobe event string type argument [UNSUPPORTED] [42] Kprobe event symbol argument [UNSUPPORTED] [43] Kprobe event argument syntax [UNSUPPORTED] [44] Kprobes event arguments with types [UNSUPPORTED] [45] Kprobe event user-memory access [UNSUPPORTED] [46] Kprobe event auto/manual naming [UNSUPPORTED] [47] Kprobe dynamic event with function tracer [UNSUPPORTED] [48] Kprobe dynamic event - probing module [UNSUPPORTED] [49] Create/delete multiprobe on kprobe event [UNSUPPORTED] [50] Kprobe event parser error log check [UNSUPPORTED] [51] Kretprobe dynamic event with arguments [UNSUPPORTED] [52] Kretprobe dynamic event with maxactive [UNSUPPORTED] [53] Register/unregister many kprobe events [UNSUPPORTED] [54] Kprobe events - probe points [UNSUPPORTED] [55] Kprobe dynamic event - adding and removing [UNSUPPORTED] [56] Uprobe event parser error log check [UNSUPPORTED] [57] test for the preemptirqsoff tracer [UNSUPPORTED] [58] Meta-selftest: Checkbashisms [UNRESOLVED] [59] Test wakeup tracer [PASS] [60] Test wakeup RT tracer [PASS] [61] event trigger - test inter-event histogram trigger expected fail actions [UNSUPPORTED] [62] event trigger - test field variable support [UNSUPPORTED] [63] event trigger - test inter-event combined histogram trigger [UNSUPPORTED] [64] event trigger - test multiple actions on hist trigger [UNSUPPORTED] [65] event trigger - test inter-event histogram trigger onchange action [UNSUPPORTED] [66] event trigger - test inter-event histogram trigger onmatch action [UNSUPPORTED] [67] event trigger - test inter-event histogram trigger onmatch-onmax action [UNSUPPORTED] [68] event trigger - test inter-event histogram trigger onmax action [UNSUPPORTED] [69] event trigger - test inter-event histogram trigger snapshot action [UNSUPPORTED] [70] event trigger - test synthetic event create remove [PASS] [71] event trigger - test synthetic_events syntax parser [PASS] [72] event trigger - test inter-event histogram trigger trace action [UNSUPPORTED] [73] event trigger - test event enable/disable trigger [PASS] [74] event trigger - test trigger filter [PASS] [75] event trigger - test histogram modifiers [UNSUPPORTED] [76] event trigger - test histogram parser errors [UNSUPPORTED] [77] event trigger - test histogram trigger [UNSUPPORTED] [78] event trigger - test multiple histogram triggers [UNSUPPORTED] [79] event trigger - test snapshot-trigger [PASS] [80] event trigger - test stacktrace-trigger [PASS] [81] trace_marker trigger - test histogram trigger [UNSUPPORTED] [82] trace_marker trigger - test snapshot trigger [PASS] [83] trace_marker trigger - test histogram with synthetic event against kernel event [UNSUPPORTED] [84] trace_marker trigger - test histogram with synthetic event [UNSUPPORTED] [85] event trigger - test traceon/off trigger [PASS] [86] (instance) Basic test for tracers [PASS] [87] (instance) Basic trace clock test [PASS] [88] (instance) Change the ringbuffer size [PASS] [89] (instance) Snapshot and tracing setting [PASS] [90] (instance) trace_pipe and trace_marker [PASS] [91] (instance) event tracing - enable/disable with event level files [PASS] [92] (instance) event tracing - restricts events based on pid notrace filtering [PASS] [93] (instance) event tracing - restricts events based on pid [PASS] [94] (instance) event tracing - enable/disable with subsystem level files [PASS] [95] (instance) ftrace - function pid notrace filters [PASS] [96] (instance) ftrace - function pid filters [PASS] [97] (instance) ftrace - stacktrace filter command [PASS] [98] (instance) ftrace - test for function event triggers [FAIL] [99] (instance) ftrace - test for function traceon/off triggers [PASS] [100] (instance) event trigger - test event enable/disable trigger [PASS] [101] (instance) event trigger - test trigger filter [PASS] [102] (instance) event trigger - test histogram modifiers [UNSUPPORTED] [103] (instance) event trigger - test histogram trigger [UNSUPPORTED] [104] (instance) event trigger - test multiple histogram triggers [UNSUPPORTED] [105] (instance) trace_marker trigger - test histogram trigger [UNSUPPORTED] [106] (instance) trace_marker trigger - test snapshot trigger [PASS]
# of passed: 54 # of failed: 2 # of unresolved: 4 # of untested: 0 # of unsupported: 46 # of xfailed: 0 # of undefined(test bug): 0 ** Tags removed: verification-needed-groovy ** Tags added: verification-done-groovy -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1894613 Title: risc-v 5.8 kernel oops on ftrace tests Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: In Progress Status in linux source package in Groovy: Fix Committed Bug description: == SRU Groovy == Running the ftrace self tests results in null pointer dereference oops on RISC-V and also on ARM64. == Fix == Upstream commit https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=4230e2deaa484b385aa01d598b2aea8e7f2660a6 == Testcase == Run the kernel ftrace selftest. Without the fix ftrace oopses on RISC-V and ARM64 and can also hang on ARM64 too. With the fix, tests run without oopsing or hanging. == Regression Potential == This fix marks two functions as notrace, so the functionality of the functions is not actually altered so the risk is negligible. If there was a change in behaviour then RCU and stop machine operations will break causing machine hangs. We don't observe this and RCU is used heavily in the kernel so the code appears to not change the behaviour as expected. The only change is the the functions are no longer traceable via ftrace, which is the desired operation. ----------------- 5.8.0-1-generic (buildd@riscv64-qemu-lcy01-015) (gcc (Ubuntu 10.2.0-5ubuntu2) 10.2.0, GNU ld (GNU Binutils for Ubuntu) 2.35) #1-Ubuntu SMP Thu Aug 27 19:51:38 UTC 2020 (Ubuntu 5.8.0-1.1-generic 5.8.4 18:30:06 DEBUG| [stdout] # selftests: ftrace: ftracetest^M^M 18:30:07 DEBUG| [stdout] # === Ftrace unit tests ===^M^M 18:30:10 DEBUG| [stdout] # [1] Basic trace file check [PASS]^M^M [17433.113458] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.113533] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.113552] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.113573] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.113591] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.114290] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.114306] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.114315] Oops [#1]^M^M [17433.114630] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M [17433.114690] Modules linked in: virtio_rng binfmt_misc uio_pdrv_genirq uio drm sch_fq_codel drm_panel_orientation_quirks backlight ip_tables x_tables autofs4 virtio_net net_failover virtio_blk failover [last unloaded: signpost]^M^M [17433.115296] CPU: 1 PID: 15 Comm: migration/1 Tainted: G W OE 5.8.0-1-generic #1-Ubuntu^M^M [17433.115419] epc: 0000000000000000 ra : 0000000000000000 sp : ffffffe1f5c67d90^M^M [17433.115442] gp : ffffffe001722298 tp : ffffffe1f5c3ae00 t0 : 0000000000000000^M^M [17433.115459] t1 : 0000000000006000 t2 : 00000000000bbc00 s0 : 0000000000000022^M^M [17433.115475] s1 : ffffffe0002b7c12 a0 : ffffffe000963a64 a1 : 0000000000000022^M^M [17433.115491] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000^M^M [17433.115507] a5 : ffffffe1fec95580 a6 : 00000000000000ff a7 : 0000000000000001^M^M [17433.115523] s2 : 0000000000000001 s3 : ffffffe00009d580 s4 : ffffffe001724210^M^M [17433.115540] s5 : ffffffe1fec9a3b8 s6 : ffffffffffffffff s7 : 0000000000000001^M^M [17433.115556] s8 : ffffffe0016f07cb s9 : ffffffe1e909bb80 s10: ffffffe0002b7ba6^M^M [17433.115573] s11: ffffffe1e909bba8 t3 : 000000000000006c t4 : 00000000002c73ba^M^M [17433.115586] t5 : 00000000001f7fa8 t6 : ffffffe000c02d1c^M^M [17433.115603] status: 0000000000000120 badaddr: 0000000000000000 cause: 000000000000000c^M^M To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1894613/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
