Wei Li 8b0f0a268d tracing/timerlat: Fix duplicated kthread creation due to CPU online/offline ...

commit 0bb0a5c12ecf36ad561542bbb95f96355e036a02 upstream.

osnoise_hotplug_workfn() is the asynchronous online callback for
"trace/osnoise:online". It may be congested when a CPU goes online and
offline repeatedly and is invoked for multiple times after a certain
online.

This will lead to kthread leak and timer corruption. Add a check
in start_kthread() to prevent this situation.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20240924094515.3561410-2-liwei391@huawei.com
Fixes: c8895e271f ("trace/osnoise: Support hotplug operations")
Signed-off-by: Wei Li <liwei391@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-10-10 11:57:59 +02:00

..

rv

rv: Update rv_en(dis)able_monitor doc to match kernel-doc

2024-06-12 11:12:49 +02:00

blktrace.c

block: remove more NULL checks after bdev_get_queue()

2023-02-21 09:23:22 -07:00

bpf_trace.c

bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()

2024-10-04 16:30:03 +02:00

bpf_trace.h

bpf: Use dedicated bpf_trace_printk event instead of trace_printk()

2020-07-13 16:55:49 -07:00

error_report-traces.c

tracing: add error_report_end trace point

2021-02-26 09:41:02 -08:00

fgraph.c

tracing: arm64: Avoid missing-prototype warnings

2023-07-12 12:06:04 -04:00

fprobe.c

fprobe: Fix to ensure the number of active retprobes is not zero

2023-10-17 10:22:42 +09:00

ftrace_internal.h

tracing: arm64: Avoid missing-prototype warnings

2023-07-12 12:06:04 -04:00

ftrace.c

kprobe/ftrace: bail out if ftrace was killed

2024-06-27 13:49:03 +02:00

Kconfig

tracing: Build event generation tests only as modules

2024-06-27 13:49:05 +02:00

kprobe_event_gen_test.c

tracing: Fix wrong return in kprobe_event_gen_test.c

2023-03-19 12:20:48 -04:00

Makefile

tracing/probes: Move finding func-proto API and getting func-param API to trace_btf

2023-08-23 09:39:45 +09:00

pid_list.c

trace/pid_list: Change gfp flags in pid_list_fill_irq()

2024-08-03 08:54:17 +02:00

pid_list.h

tracing: Create a sparse bitmask for pid filtering

2021-10-05 17:38:45 -04:00

power-traces.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

preemptirq_delay_test.c

tracing: Add MODULE_DESCRIPTION() to preemptirq_delay_test

2024-06-27 13:49:14 +02:00

rethook.c

rethook: Use __rcu pointer for rethook::handler

2023-12-13 18:45:19 +01:00

ring_buffer_benchmark.c

ring_buffer: Remove unused "event" parameter

2022-11-23 19:08:30 -05:00

ring_buffer.c

ring-buffer: Fix a race between readers and resize checks

2024-06-12 11:11:19 +02:00

rpm-traces.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

synth_event_gen_test.c

tracing / synthetic: Disable events after testing in synth_event_gen_test_init()

2024-01-01 12:42:45 +00:00

trace_benchmark.c

tracing: Add numeric delta time to the trace event benchmark

2022-09-26 13:01:09 -04:00

trace_benchmark.h

tracing: Add numeric delta time to the trace event benchmark

2022-09-26 13:01:09 -04:00

trace_boot.c

tracing/boot: Test strscpy() against less than zero for error

2023-07-05 10:30:49 -04:00

trace_branch.c

tracing: Merge irqflags + preempt counter.

2021-02-02 17:02:06 -05:00

trace_btf.c

tracing/probes: Fix to search structure fields correctly

2024-02-23 09:25:05 +01:00

trace_btf.h

tracing/probes: Add a function to search a member of a struct/union

2023-08-23 09:40:16 +09:00

trace_clock.c

tracing: Do no increment trace_clock_global() by one

2021-06-18 09:10:00 -04:00

trace_dynevent.c

tracing: Free buffers when a used dynamic event is removed

2022-11-23 19:07:12 -05:00

trace_dynevent.h

tracing: Add DYNAMIC flag for dynamic events

2021-08-18 18:10:32 -04:00

trace_entries.h

tracing: Add back FORTIFY_SOURCE logic to kernel_stack event structure

2023-07-30 18:11:44 -04:00

trace_eprobe.c

tracing/probes: Support BTF argument on module functions

2023-08-23 09:39:15 +09:00

trace_event_perf.c

tracing/perf: Use strndup_user instead of kzalloc/strncpy_from_user

2022-11-23 19:08:31 -05:00

trace_events_filter_test.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_events_filter.c

tracing: Have trace_event_file have ref counters

2023-11-08 11:56:21 +01:00

trace_events_hist.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-09-04 13:28:22 +02:00

trace_events_inject.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-09-04 13:28:22 +02:00

trace_events_synth.c

tracing/synthetic: Fix trace_string() return value

2024-02-23 09:25:05 +01:00

trace_events_trigger.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-09-04 13:28:22 +02:00

trace_events_user.c

tracing/user_events: Fix non-spaced field matching

2024-06-12 11:12:11 +02:00

trace_events.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-09-04 13:28:22 +02:00

trace_export.c

tracing: Add back FORTIFY_SOURCE logic to kernel_stack event structure

2023-07-30 18:11:44 -04:00

trace_fprobe.c

tracing: fprobe-event: Fix to check tracepoint event and return

2023-11-28 17:20:13 +00:00

trace_functions_graph.c

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

trace_functions.c

ftrace: disable preemption when recursion locked

2021-10-27 11:21:49 -04:00

trace_hwlat.c

tracing/hwlat: Fix a race during cpuhp processing

2024-10-10 11:57:59 +02:00

trace_irqsoff.c

tracing: Fix memleak due to race between current_tracer and trace

2023-08-17 13:49:37 -04:00

trace_kdb.c

kdb: Rename members of struct kdbtab_t

2021-07-27 17:05:06 +01:00

trace_kprobe_selftest.c

tracing: arm64: Avoid missing-prototype warnings

2023-07-12 12:06:04 -04:00

trace_kprobe_selftest.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_kprobe.c

tracing/kprobes: Fix the order of argument descriptions

2023-11-20 11:59:38 +01:00

trace_mmiotrace.c

tracing: Remove definition of DEBUG in trace_mmiotrace.c

2021-02-02 17:02:07 -05:00

trace_nop.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

trace_osnoise.c

tracing/timerlat: Fix duplicated kthread creation due to CPU online/offline

2024-10-10 11:57:59 +02:00

trace_output.c

tracing: Add size check when printing trace_marker output

2024-01-20 11:51:43 +01:00

trace_output.h

tracing: Add "fields" option to show raw trace event fields

2023-03-29 06:52:08 -04:00

trace_preemptirq.c

cpuidle: tracing, preempt: Squash _rcuidle tracing

2023-01-31 15:01:46 +01:00

trace_printk.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_probe_kernel.h

tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails

2023-07-14 17:04:58 +09:00

trace_probe_tmpl.h

tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails

2023-07-14 17:04:58 +09:00

trace_probe.c

tracing/probes: fix error check in parse_btf_field()

2024-06-12 11:12:51 +02:00

trace_probe.h

tracing/probes: Fix to show a parse error for bad type for $comm

2024-02-23 09:25:05 +01:00

trace_recursion_record.c

tracing: Use trace_create_file() to simplify creation of tracefs entries

2022-05-26 21:12:52 -04:00

trace_sched_switch.c

sched/tracing: Append prev_state to tp args instead

2022-05-12 00:37:11 +02:00

trace_sched_wakeup.c

tracing: Fix memleak due to race between current_tracer and trace

2023-08-17 13:49:37 -04:00

trace_selftest_dynamic.c

ftrace: Mark function tracer test functions noinline/noclone

2018-01-23 15:57:29 -05:00

trace_selftest.c

tracing: Have function_graph selftest call cond_resched()

2023-05-28 21:15:46 -04:00

trace_seq.c

tracing: Fix kernel-doc warnings in trace_seq.c

2023-07-28 19:59:04 -04:00

trace_stack.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_stat.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_stat.h

tracing: Use generic type for comparator function

2019-11-14 13:15:11 -05:00

trace_synth.h

tracing: Allow synthetic events to pass around stacktraces

2023-01-25 10:31:24 -05:00

trace_syscalls.c

tracing: bpf: use struct trace_entry in struct syscall_tp_t

2023-08-01 10:53:28 -07:00

trace_uprobe.c

Merge tag 'probes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2023-09-02 11:10:50 -07:00

trace.c

tracing: Avoid possible softlockup in tracing_iter_reset()

2024-09-12 11:11:27 +02:00

trace.h

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-09-04 13:28:22 +02:00

tracing_map.c

tracing: Fix overflow in get_free_elt()

2024-08-14 13:58:58 +02:00

tracing_map.h

tracing: Remove unused extern declaration tracing_map_set_field_descr()

2023-07-23 11:08:14 -04:00