This is an upstream behavior under lockdown "confedentiality" mode:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ccbd54ff54e8b1880456b81c4aea352ebe208843 Possibly there's an argument that the information disclosure isn't severe enough that it needs to be restricted by default under secure boot. Unfortunately the patch description isn't specific about what information is exposed to help assess the impact (e.g. kernel addresses vs key information). -- 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/1862708 Title: tracing doesn't work on focal Status in linux package in Ubuntu: Confirmed Status in perf-tools-unstable package in Ubuntu: New Bug description: Hello, while investigating bug 1861359 I tried to use kprobe-perf to troubleshoot and found that tracing doesn't work on focal: # kprobe-perf -s 'p:shrink_node' ERROR: func shrink_node not in /sys/kernel/debug/tracing/available_filter_functions. Either it doesn't exist, or, it might be unsafe to kprobe. Exiting. Use -F to override. # ls -l /sys/kernel/debug/tracing/available_filter_functions ls: cannot access '/sys/kernel/debug/tracing/available_filter_functions': No such file or directory # find /sys/kernel/debug/tracing /sys/kernel/debug/tracing /sys/kernel/debug/tracing/instances /sys/kernel/debug/tracing/trace_stat /sys/kernel/debug/tracing/per_cpu /sys/kernel/debug/tracing/per_cpu/cpu7 /sys/kernel/debug/tracing/per_cpu/cpu6 /sys/kernel/debug/tracing/per_cpu/cpu5 /sys/kernel/debug/tracing/per_cpu/cpu4 /sys/kernel/debug/tracing/per_cpu/cpu3 /sys/kernel/debug/tracing/per_cpu/cpu2 /sys/kernel/debug/tracing/per_cpu/cpu1 /sys/kernel/debug/tracing/per_cpu/cpu0 /sys/kernel/debug/tracing/options I'm guessing this is due to lockdown: # dmesg | grep -C2 -i lockdown [ 0.000000] efi: TPMFinalLog=0x9ff92000 SMBIOS=0x9f05d000 SMBIOS 3.0=0x9f05a000 ACPI=0x9fffe000 ACPI 2.0=0x9fffe014 ESRT=0x9eee7000 MEMATTR=0x99c76018 TPMEventLog=0x931f7018 [ 0.000000] secureboot: Secure boot enabled [ 0.000000] Kernel is locked down from EFI Secure Boot mode; see man kernel_lockdown.7 [ 0.000000] SMBIOS 3.0.0 present. [ 0.000000] DMI: LENOVO 20KHCTO1WW/20KHCTO1WW, BIOS N23ET69W (1.44 ) 11/25/2019 -- [ 0.532664] hpet0: 8 comparators, 64-bit 24.000000 MHz counter [ 0.534731] clocksource: Switched to clocksource tsc-early [ 0.534737] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534737] Could not create tracefs 'available_events' entry [ 0.534741] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534741] Could not create tracefs 'set_event' entry [ 0.534742] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534743] Could not create tracefs 'available_tracers' entry [ 0.534744] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534745] Could not create tracefs 'current_tracer' entry [ 0.534745] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534746] Could not create tracefs 'tracing_cpumask' entry [ 0.534747] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534747] Could not create tracefs 'trace_options' entry [ 0.534748] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534748] Could not create tracefs 'trace' entry [ 0.534749] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534750] Could not create tracefs 'trace_pipe' entry [ 0.534750] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534751] Could not create tracefs 'buffer_size_kb' entry [ 0.534752] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534752] Could not create tracefs 'buffer_total_size_kb' entry [ 0.534753] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534754] Could not create tracefs 'free_buffer' entry [ 0.534754] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534755] Could not create tracefs 'trace_marker' entry [ 0.534782] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534783] Could not create tracefs 'trace_marker_raw' entry [ 0.534783] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534784] Could not create tracefs 'trace_clock' entry [ 0.534785] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534785] Could not create tracefs 'tracing_on' entry [ 0.534786] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534786] Could not create tracefs 'timestamp_mode' entry [ 0.534787] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534788] Could not create tracefs 'buffer_percent' entry [ 0.534816] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534817] Could not create tracefs 'print-parent' entry [ 0.534817] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534818] Could not create tracefs 'sym-offset' entry [ 0.534819] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534819] Could not create tracefs 'sym-addr' entry [ 0.534820] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534820] Could not create tracefs 'verbose' entry [ 0.534821] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534822] Could not create tracefs 'raw' entry [ 0.534822] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534823] Could not create tracefs 'hex' entry [ 0.534824] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534824] Could not create tracefs 'bin' entry [ 0.534825] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534825] Could not create tracefs 'block' entry [ 0.534826] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534827] Could not create tracefs 'trace_printk' entry [ 0.534827] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534828] Could not create tracefs 'annotate' entry [ 0.534829] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534829] Could not create tracefs 'userstacktrace' entry [ 0.534830] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534830] Could not create tracefs 'sym-userobj' entry [ 0.534831] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534832] Could not create tracefs 'printk-msg-only' entry [ 0.534832] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534833] Could not create tracefs 'context-info' entry [ 0.534834] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534834] Could not create tracefs 'latency-format' entry [ 0.534835] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534835] Could not create tracefs 'record-cmd' entry [ 0.534836] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534837] Could not create tracefs 'record-tgid' entry [ 0.534837] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534838] Could not create tracefs 'overwrite' entry [ 0.534838] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534839] Could not create tracefs 'disable_on_free' entry [ 0.534840] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534840] Could not create tracefs 'irq-info' entry [ 0.534841] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534841] Could not create tracefs 'markers' entry [ 0.534842] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534843] Could not create tracefs 'event-fork' entry [ 0.534843] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534844] Could not create tracefs 'function-trace' entry [ 0.534844] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534845] Could not create tracefs 'function-fork' entry [ 0.534846] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534846] Could not create tracefs 'display-graph' entry [ 0.534847] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534848] Could not create tracefs 'stacktrace' entry [ 0.534848] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534849] Could not create tracefs 'tracing_max_latency' entry [ 0.534850] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534850] Could not create tracefs 'snapshot' entry [ 0.534851] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534851] Could not create tracefs 'error_log' entry [ 0.534855] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534855] Could not create tracefs 'trace_pipe' entry [ 0.534856] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534857] Could not create tracefs 'trace' entry [ 0.534857] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534858] Could not create tracefs 'trace_pipe_raw' entry [ 0.534858] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534859] Could not create tracefs 'stats' entry [ 0.534860] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534860] Could not create tracefs 'buffer_size_kb' entry [ 0.534861] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534862] Could not create tracefs 'snapshot' entry [ 0.534862] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534863] Could not create tracefs 'snapshot_raw' entry [ 0.534864] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534865] Could not create tracefs 'trace_pipe' entry [ 0.534866] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534866] Could not create tracefs 'trace' entry [ 0.534867] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534867] Could not create tracefs 'trace_pipe_raw' entry [ 0.534868] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534869] Could not create tracefs 'stats' entry [ 0.534869] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534870] Could not create tracefs 'buffer_size_kb' entry [ 0.534870] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534871] Could not create tracefs 'snapshot' entry [ 0.534872] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534872] Could not create tracefs 'snapshot_raw' entry [ 0.534874] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534874] Could not create tracefs 'trace_pipe' entry [ 0.534875] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534875] Could not create tracefs 'trace' entry [ 0.534876] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534877] Could not create tracefs 'trace_pipe_raw' entry [ 0.534877] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534878] Could not create tracefs 'stats' entry [ 0.534879] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534879] Could not create tracefs 'buffer_size_kb' entry [ 0.534880] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534880] Could not create tracefs 'snapshot' entry [ 0.534881] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534881] Could not create tracefs 'snapshot_raw' entry [ 0.534885] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534885] Could not create tracefs 'trace_pipe' entry [ 0.534886] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534887] Could not create tracefs 'trace' entry [ 0.534887] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534888] Could not create tracefs 'trace_pipe_raw' entry [ 0.534888] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534889] Could not create tracefs 'stats' entry [ 0.534890] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534890] Could not create tracefs 'buffer_size_kb' entry [ 0.534891] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534891] Could not create tracefs 'snapshot' entry [ 0.534892] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534893] Could not create tracefs 'snapshot_raw' entry [ 0.534894] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534895] Could not create tracefs 'trace_pipe' entry [ 0.534895] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534896] Could not create tracefs 'trace' entry [ 0.534897] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534897] Could not create tracefs 'trace_pipe_raw' entry [ 0.534898] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534898] Could not create tracefs 'stats' entry [ 0.534899] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534900] Could not create tracefs 'buffer_size_kb' entry [ 0.534900] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534901] Could not create tracefs 'snapshot' entry [ 0.534901] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534902] Could not create tracefs 'snapshot_raw' entry [ 0.534904] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534904] Could not create tracefs 'trace_pipe' entry [ 0.534905] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534905] Could not create tracefs 'trace' entry [ 0.534906] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534907] Could not create tracefs 'trace_pipe_raw' entry [ 0.534907] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534908] Could not create tracefs 'stats' entry [ 0.534908] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534909] Could not create tracefs 'buffer_size_kb' entry [ 0.534910] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534910] Could not create tracefs 'snapshot' entry [ 0.534911] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534911] Could not create tracefs 'snapshot_raw' entry [ 0.534913] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534914] Could not create tracefs 'trace_pipe' entry [ 0.534914] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534915] Could not create tracefs 'trace' entry [ 0.534915] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534916] Could not create tracefs 'trace_pipe_raw' entry [ 0.534917] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534917] Could not create tracefs 'stats' entry [ 0.534918] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534918] Could not create tracefs 'buffer_size_kb' entry [ 0.534919] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534920] Could not create tracefs 'snapshot' entry [ 0.534920] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534921] Could not create tracefs 'snapshot_raw' entry [ 0.534922] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534923] Could not create tracefs 'trace_pipe' entry [ 0.534924] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534924] Could not create tracefs 'trace' entry [ 0.534925] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534925] Could not create tracefs 'trace_pipe_raw' entry [ 0.534926] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534927] Could not create tracefs 'stats' entry [ 0.534927] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534928] Could not create tracefs 'buffer_size_kb' entry [ 0.534928] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534929] Could not create tracefs 'snapshot' entry [ 0.534930] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534930] Could not create tracefs 'snapshot_raw' entry [ 0.534931] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534931] Could not create tracefs 'set_ftrace_pid' entry [ 0.534932] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534933] Could not create tracefs 'available_filter_functions' entry [ 0.534934] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534934] Could not create tracefs 'enabled_functions' entry [ 0.534935] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534936] Could not create tracefs 'set_ftrace_filter' entry [ 0.534936] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534937] Could not create tracefs 'set_ftrace_notrace' entry [ 0.534937] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534938] Could not create tracefs 'set_graph_function' entry [ 0.534939] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534939] Could not create tracefs 'set_graph_notrace' entry [ 0.534942] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.534943] ------------[ cut here ]------------ [ 0.534944] Could not register function stat for cpu 0 -- [ 0.535004] ret_from_fork+0x35/0x40 [ 0.535008] ---[ end trace a9f51a1c2b8afb59 ]--- [ 0.535008] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.535008] Could not create tracefs 'tracing_thresh' entry [ 0.535008] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.535008] Could not create tracefs 'README' entry [ 0.535008] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.535008] Could not create tracefs 'saved_cmdlines' entry [ 0.535008] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.535008] Could not create tracefs 'saved_cmdlines_size' entry [ 0.535008] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.535008] Could not create tracefs 'saved_tgids' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'dyn_ftrace_total_info' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-overrun' entry [ 0.536594] ------------[ cut here ]------------ -- [ 0.536594] ret_from_fork+0x35/0x40 [ 0.536594] ---[ end trace a9f51a1c2b8afb5a ]--- [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-cpu' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-overhead' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-proc' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-duration' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-abstime' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-irqs' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'funcgraph-tail' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'sleep-time' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'graph-time' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'func_stack_trace' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'test_nop_accept' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'test_nop_refuse' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'printk_formats' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'max_graph_depth' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'synthetic_events' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] trace_kprobe: Could not create tracefs 'kprobe_events' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] trace_kprobe: Could not create tracefs 'kprobe_profile' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'dynamic_events' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'uprobe_events' entry [ 0.536594] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.536594] Could not create tracefs 'uprobe_profile' entry [ 0.536594] *** VALIDATE bpf *** -- [ 0.820588] caller snb_uncore_imc_init_box+0x6c/0xb0 mapping multiple BARs [ 0.820865] check: Scanning for low memory corruption every 60 seconds [ 0.823207] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823208] Could not create tracefs 'stack_max_size' entry [ 0.823209] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823209] Could not create tracefs 'stack_trace' entry [ 0.823210] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823211] Could not create tracefs 'stack_trace_filter' entry [ 0.823217] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823218] Could not create tracefs 'blk_classic' entry [ 0.823218] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823219] Could not create tracefs 'blk_cgroup' entry [ 0.823220] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.823220] Could not create tracefs 'blk_cgname' entry [ 0.823436] Initialise system trusted keyrings -- [ 0.952067] sched_clock: Marking stable (951207778, 849693)->(1034265626, -82208155) [ 0.952144] registered taskstats version 1 [ 0.952149] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7 [ 0.952154] Loading compiled-in X.509 certificates [ 0.953366] Loaded X.509 cert 'Build time autogenerated kernel key: b859a3f0d1fb97c048eb1e12333684e1db3073ca' -- [ 1.001913] tty ttyS1: hash matches [ 1.002134] rtc_cmos 00:04: setting system clock to 2020-02-06T20:44:21 UTC (1581021861) [ 1.002371] Lockdown: swapper/0: hibernation is restricted; see man kernel_lockdown.7 [ 1.003280] Freeing unused decrypted memory: 2040K [ 1.003638] Freeing unused kernel image memory: 2680K -- [ 71.456989] systemd[1]: Detected architecture x86-64. [ 71.473620] systemd[1]: Set hostname to <millbarge>. [ 71.475128] Lockdown: systemd: /dev/mem,kmem,port is restricted; see man kernel_lockdown.7 [ 71.583229] systemd[1]: /lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly. [ 71.592395] systemd[1]: /lib/systemd/system/virtlogd.socket:6: ListenStream= references a path below legacy directory /var/run/, updating /var/run/libvirt/virtlogd-sock → /run/libvirt/virtlogd-sock; please update the unit file accordingly. -- [ 72.994080] audit: type=1400 audit(1581021933.486:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=2420 comm="apparmor_parser" [ 73.080322] Adding 2097148k swap on /dev/zd0. Priority:-2 extents:1 across:2097148k SSDscFS [ 73.791076] Lockdown: rasdaemon: use of tracefs is restricted; see man kernel_lockdown.7 [ 73.791078] Could not create tracefs 'set_event' entry [ 73.793322] Lockdown: rasdaemon: use of tracefs is restricted; see man kernel_lockdown.7 [ 73.793324] Could not create tracefs 'set_event' entry [ 73.812049] Lockdown: rasdaemon: use of tracefs is restricted; see man kernel_lockdown.7 [ 73.812050] Could not create tracefs 'set_event' entry [ 73.887930] Bluetooth: hci0: Waiting for firmware download to complete -- [ 73.900884] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-12-16.ddc [ 73.903619] Bluetooth: hci0: Applying Intel DDC parameters completed [ 74.166659] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7 [ 75.423231] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 75.424155] virbr0: port 1(virbr0-nic) entered blocking state -- [ 75.878990] virbr0: port 1(virbr0-nic) entered listening state [ 75.932525] virbr0: port 1(virbr0-nic) entered disabled state [ 76.013277] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 76.015903] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 76.016454] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 77.672659] drm: not enough stolen space for compressed buffer (need 36864000 more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this. [ 78.458791] e1000e: enp0s31f6 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None # Thanks ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: perf-tools-unstable 1.0.1~20200130+git49b8cdf-1ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 Uname: Linux 5.4.0-12-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 Date: Tue Feb 11 00:57:36 2020 Dependencies: PackageArchitecture: all ProcEnviron: TERM=rxvt-unicode-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: perf-tools-unstable UpgradeStatus: Upgraded to focal on 2020-01-24 (17 days ago) --- ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-12-generic. ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: sarnold 4492 F.... pulseaudio /dev/snd/controlC0: sarnold 4492 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0x2fe1028000 irq 146' Mixer name : 'Realtek ALC285' Components : 'HDA:10ec0285,17aa225c,00100002 HDA:8086280b,80860101,00100000' Controls : 53 Simple ctrls : 15 Card1.Amixer.info: Card hw:1 'Audio'/'Generic ThinkPad Dock USB Audio at usb-0000:00:14.0-4.2.4, high speed' Mixer name : 'USB Mixer' Components : 'USB17ef:306f' Controls : 9 Simple ctrls : 4 Dependencies: DistroRelease: Ubuntu 20.04 HibernationDevice: RESUME=none IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' MachineType: LENOVO 20KHCTO1WW NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: perf-tools-unstable 1.0.1~20200130+git49b8cdf-1ubuntu1 PackageArchitecture: all ProcEnviron: TERM=rxvt-unicode-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu@/vmlinuz-5.4.0-12-generic root=ZFS=rpool/ROOT/ubuntu ro root=ZFS=rpool/ROOT/ubuntu quiet splash acpi_osi=! "acpi_osi=Windows 2015" cgroup_disable=memory vt.handoff=1 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 RelatedPackageVersions: linux-restricted-modules-5.4.0-12-generic N/A linux-backports-modules-5.4.0-12-generic N/A linux-firmware 1.186 Tags: focal Uname: Linux 5.4.0-12-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-01-24 (17 days ago) UserGroups: adm cdrom libvirt lpadmin plugdev sambashare sbuild sudo _MarkForUpload: True dmi.bios.date: 11/25/2019 dmi.bios.vendor: LENOVO dmi.bios.version: N23ET69W (1.44 ) dmi.board.asset.tag: Not Available dmi.board.name: 20KHCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN23ET69W(1.44):bd11/25/2019:svnLENOVO:pn20KHCTO1WW:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KHCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 6th dmi.product.name: 20KHCTO1WW dmi.product.sku: LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th dmi.product.version: ThinkPad X1 Carbon 6th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862708/+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
