Steven Rostedt 4f7bf54b07 tracing: Fix wakeup tracers on failure of acquiring calltime ... The functions wakeup_graph_entry() and wakeup_graph_return() both call func_prolog_preempt_disable() that will test if the data->disable is already set and if not, increment it and disable preemption. If it was set, it returns false and the caller exits. The caller of this function must decrement the disable counter, but misses doing so if the calltime fails to be acquired. Instead of exiting out when calltime is NULL, change the logic to do the work if it is not NULL and still do the clean up at the end of the function if it is NULL. Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/20251008114835.027b878a@gandalf.local.home Fixes: a485ea9e3ef3 ("tracing: Fix irqsoff and wakeup latency tracers when using function graph") Reported-by: Sasha Levin <sashal@kernel.org> Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-1-sashal@kernel.org/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2025-10-08 12:10:26 -04:00
..
rv	rv: Fix missing mutex unlock in rv_register_monitor()	2025-09-15 08:36:35 +02:00
blktrace.c	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
bpf_trace.c	bpf: Clean up individual BTF_ID code	2025-07-16 18:34:42 -07:00
bpf_trace.h
error_report-traces.c
fgraph.c	tracing: fgraph: Protect return handler from recursion loop	2025-09-27 09:04:05 -04:00
fprobe.c	tracing: fprobe: Fix to remove recorded module addresses from filter	2025-09-24 23:18:26 +09:00
ftrace_internal.h
ftrace.c	ftrace: Also allocate and copy hash for reading of filter files	2025-08-22 19:58:35 -04:00
Kconfig	tracing changes for 6.17	2025-08-01 10:29:36 -07:00
kprobe_event_gen_test.c
Makefile	tracing: Have eprobes have their own config option	2025-07-30 10:38:43 -04:00
pid_list.c	tracing: Cleanup upper_empty() in pid_list	2025-05-14 11:19:32 -04:00
pid_list.h
power-traces.c	PM: cpufreq: powernv/tracing: Move powernv_throttle trace event	2025-07-21 16:40:56 -04:00
preemptirq_delay_test.c	kernel: trace: preemptirq_delay_test: use offstack cpu mask	2025-07-08 18:17:38 -04:00
rethook.c
ring_buffer_benchmark.c
ring_buffer.c	ring-buffer: Remove redundant semicolons	2025-08-20 09:20:30 -04:00
rpm-traces.c
synth_event_gen_test.c
trace_benchmark.c
trace_benchmark.h
trace_boot.c
trace_branch.c	tracing: branch: Use trace_tracing_is_on_cpu() instead of "disabled" field	2025-05-09 15:19:10 -04:00
trace_btf.c
trace_btf.h
trace_clock.c
trace_dynevent.c	tracing: dynevent: Add a missing lockdown check on dynevent	2025-09-25 00:22:46 +09:00
trace_dynevent.h	tracing: probes: Fix a possible race in trace_probe_log APIs	2025-05-13 22:23:34 +09:00
trace_entries.h	ftrace: Expose call graph depth as unsigned int	2025-05-08 09:36:08 -04:00
trace_eprobe.c	tracing: Have eprobes handle arrays	2025-07-24 22:57:32 +09:00
trace_event_perf.c	perf: Remove unnecessary parameter of security check	2025-02-26 14:13:58 -05:00
trace_events_filter_test.h
trace_events_filter.c	tracing changes for 6.17	2025-08-01 10:29:36 -07:00
trace_events_hist.c	tracing: Rename event_trigger_alloc() to trigger_data_alloc()	2025-05-09 15:19:11 -04:00
trace_events_inject.c
trace_events_synth.c	tracing: Add guard(ring_buffer_nest)	2025-08-01 16:49:15 -04:00
trace_events_trigger.c	tracing updates for v6.16:	2025-05-29 21:04:36 -07:00
trace_events_user.c	trace: Remove redundant __GFP_NOWARN	2025-09-02 11:48:16 -04:00
trace_events.c	tracing changes for 6.17	2025-08-01 10:29:36 -07:00
trace_export.c
trace_fprobe.c	tracing: trace_fprobe: Fix typo of the semicolon	2025-07-29 08:37:52 +09:00
trace_functions_graph.c	fgraph: Copy args in intermediate storage with entry	2025-08-22 17:32:35 -04:00
trace_functions.c	tracing updates for v6.16:	2025-05-29 21:04:36 -07:00
trace_hwlat.c	tracing: Replace opencoded cpumask_next_wrap() in move_to_next_cpu()	2025-07-08 18:17:29 -04:00
trace_irqsoff.c	tracing: Use atomic_inc_return() for updating "disabled" counter in irqsoff tracer	2025-05-09 15:19:10 -04:00
trace_kdb.c	ring-buffer: Remove ring_buffer_read_prepare_sync()	2025-07-22 20:01:41 -04:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	tracing: kprobe-event: Fix null-ptr-deref in trace_kprobe_create_internal()	2025-09-18 07:36:41 +09:00
trace_mmiotrace.c	tracing/mmiotrace: Remove reference to unused per CPU data pointer	2025-05-08 09:36:09 -04:00
trace_nop.c
trace_osnoise.c	tracing/osnoise: Replace kmalloc + copy_from_user with memdup_user_nul	2025-10-08 12:05:46 -04:00
trace_output.c	tracing: Have unsigned int function args displayed as hexadecimal	2025-08-01 19:14:51 -04:00
trace_output.h	ftrace: Add print_function_args()	2025-03-04 11:27:23 -05:00
trace_preemptirq.c	tracing: Fix archs that still call tracepoints without RCU watching	2024-12-05 09:28:58 -05:00
trace_printk.c
trace_probe_kernel.h
trace_probe_tmpl.h	tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS	2024-12-26 10:50:04 -05:00
trace_probe.c	Probes updates for v6.17:	2025-07-30 15:38:01 -07:00
trace_probe.h	tracing: probe: Allocate traceprobe_parse_context from heap	2025-07-24 00:21:30 +09:00
trace_recursion_record.c
trace_sched_switch.c	pid: allow pid_max to be set per pid namespace	2024-12-02 11:25:25 +01:00
trace_sched_wakeup.c	tracing: Fix wakeup tracers on failure of acquiring calltime	2025-10-08 12:10:26 -04:00
trace_selftest_dynamic.c
trace_selftest.c	fgraph: Pass ftrace_regs to retfunc	2024-12-26 10:50:03 -05:00
trace_seq.c
trace_stack.c	tracing updates for v6.16:	2025-05-29 21:04:36 -07:00
trace_stat.c	tracing: Switch trace_stat.c code over to use guard()	2024-12-26 10:38:37 -05:00
trace_stat.h
trace_synth.h
trace_syscalls.c
trace_uprobe.c	tracing: uprobe-event: Allocate string buffers from heap	2025-07-24 00:21:58 +09:00
trace.c	tracing: Silence warning when chunk allocation fails in trace_pid_write	2025-09-08 14:56:43 -04:00
trace.h	tracing fixes for v6.17-rc2:	2025-08-23 10:11:34 -04:00
tracing_map.c	tracing: Fix cmp_entries_dup() to respect sort() comparison rules	2024-12-04 10:38:24 -05:00
tracing_map.h