Steven Rostedt 0a8f11f856 tracing: Do not take trace_event_sem in print_event_fields() ... On some paths in print_event_fields() it takes the trace_event_sem for read, even though it should always be held when the function is called. Remove the taking of that mutex and add a lockdep_assert_held_read() to make sure the trace_event_sem is held when print_event_fields() is called. Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/20250501224128.0b1f0571@batman.local.home Fixes: 80a76994b2 ("tracing: Add "fields" option to show raw trace event fields") Reported-by: syzbot+441582c1592938fccf09@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/6813ff5e.050a0220.14dd7d.001b.GAE@google.com/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2025-05-01 22:44:52 -04:00
..
rv	rv: Fix out-of-bound memory access in rv_is_container_monitor()	2025-04-12 12:13:30 -04:00
blktrace.c	blktrace: remove redundant return at end of function	2024-12-23 08:17:23 -07:00
bpf_trace.c	Modules changes for 6.15-rc1	2025-03-30 15:44:36 -07:00
bpf_trace.h	tracing/treewide: Remove second parameter of __assign_str()	2024-05-22 20:14:47 -04:00
error_report-traces.c
fgraph.c	fgraph: Correct typo in ftrace_return_to_handler comment	2025-03-04 11:15:50 -05:00
fprobe.c	tracing: fprobe: Cleanup fprobe hash when module unloading	2025-04-08 08:46:25 +09:00
ftrace_internal.h	function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE	2024-06-10 18:08:23 -04:00
ftrace.c	ftrace: Fix NULL memory allocation check	2025-05-01 15:46:19 -04:00
Kconfig	ftrace: Have tracing function args depend on PROBE_EVENTS_BTF_ARGS	2025-04-02 09:50:56 -04:00
kprobe_event_gen_test.c
Makefile
pid_list.c	pid: allow pid_max to be set per pid namespace	2024-12-02 11:25:25 +01:00
pid_list.h
power-traces.c
preemptirq_delay_test.c	minmax: make generic MIN() and MAX() macros available everywhere	2024-07-28 15:49:18 -07:00
rethook.c	rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()	2024-05-01 23:18:48 +09:00
ring_buffer_benchmark.c	ring-buffer: Use str_low_high() helper in ring_buffer_producer()	2024-10-19 11:12:25 -04:00
ring_buffer.c	Persistent buffer cleanups and simplifications for v6.15:	2025-04-03 16:09:29 -07:00
rpm-traces.c
synth_event_gen_test.c	tracing / synthetic: Disable events after testing in synth_event_gen_test_init()	2023-12-21 10:04:45 -05:00
trace_benchmark.c	tracing: Improve benchmark test performance by using do_div()	2024-05-13 20:00:57 -04:00
trace_benchmark.h
trace_boot.c	tracing: Allow creating instances with specified system events	2023-12-18 23:14:16 -05:00
trace_branch.c	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_btf.c	tracing/probes: Fix to search structure fields correctly	2024-02-17 21:25:42 +09:00
trace_btf.h
trace_clock.c	tracing: Use atomic64_inc_return() in trace_clock_counter()	2024-10-09 19:59:49 -04:00
trace_dynevent.c	tracing/string: Create and use __free(argv_free) in trace_dynevent.c	2024-12-26 10:38:37 -05:00
trace_dynevent.h
trace_entries.h	ftrace: Fix type of ftrace_graph_ent_entry.depth	2025-04-17 15:19:15 -04:00
trace_eprobe.c	Probes updates for v6.15:	2025-03-27 19:31:34 -07:00
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: Fix filter string testing	2025-04-17 22:16:56 -04:00
trace_events_hist.c	tracing updates for v6.15:	2025-03-27 16:22:12 -07:00
trace_events_inject.c	tracing: Have format file honor EVENT_FILE_FL_FREED	2024-08-07 18:12:46 -04:00
trace_events_synth.c	tracing: Do not add length to print format in synthetic events	2025-04-09 11:34:21 -04:00
trace_events_trigger.c	tracing: Constify struct event_trigger_ops	2025-03-20 07:04:00 -04:00
trace_events_user.c	tracing/user_events: Slightly simplify user_seq_show()	2025-03-06 13:35:27 -05:00
trace_events.c	tracing: Verify event formats that have "%*p.."	2025-04-02 09:51:26 -04:00
trace_export.c
trace_fprobe.c	Probes fixes for v6.14:	2025-04-08 12:51:34 -07:00
trace_functions_graph.c	ftrace: Do not have print_graph_retval() add a newline	2025-04-12 12:13:30 -04:00
trace_functions.c	ftrace: Add arguments to function tracer	2025-03-04 11:27:24 -05:00
trace_hwlat.c	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_irqsoff.c	tracing: Fix use-after-free in print_graph_function_flags during tracer switching	2025-03-22 05:42:42 -04:00
trace_kdb.c	trace: kdb: Replace simple_strtoul with kstrtoul in kdb_ftdump	2024-11-02 08:33:13 +00:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	Modules changes for 6.15-rc1	2025-03-30 15:44:36 -07:00
trace_mmiotrace.c	tracing: Remove TRACE_EVENT_FL_FILTERED logic	2024-10-08 15:24:49 -04:00
trace_nop.c
trace_osnoise.c	tracing updates for v6.15:	2025-03-27 16:22:12 -07:00
trace_output.c	tracing: Do not take trace_event_sem in print_event_fields()	2025-05-01 22:44:52 -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	tracing: probe-events: Add comments about entry data storing code	2025-03-27 21:19:54 +09:00
trace_probe.h	tracing: probe-events: Log error for exceeding the number of arguments	2025-03-27 21:19:54 +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 use-after-free in print_graph_function_flags during tracer switching	2025-03-22 05:42:42 -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_seq: Increase the buffer size to almost two pages	2023-12-18 23:14:16 -05:00
trace_stack.c	tracing: Switch trace_stack.c code over to use guard()	2024-12-26 10:38:37 -05:00
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	tracing/perf: Add might_fault check to syscall probes	2024-10-09 17:09:46 -04:00
trace_uprobe.c	tracing: probe-events: Log error for exceeding the number of arguments	2025-03-27 21:19:54 +09:00
trace.c	tracing: Fix trace_adjust_address() when there is no modules in scratch area	2025-05-01 16:06:55 -04:00
trace.h	Persistent buffer cleanups and simplifications for v6.15:	2025-04-03 16:09:29 -07:00
tracing_map.c	tracing: Fix cmp_entries_dup() to respect sort() comparison rules	2024-12-04 10:38:24 -05:00
tracing_map.h