Beau Belgrave 97bbce89bf tracing/user_events: Prevent same address and bit per process ... User processes register an address and bit pair for events. If the same address and bit pair are registered multiple times in the same process, it can cause undefined behavior when events are enabled/disabled. When more than one are used, the bit could be turned off by another event being disabled, while the original event is still enabled. Prevent undefined behavior by checking the current mm to see if any event has already been registered for the address and bit pair. Return EADDRINUSE back to the user process if it's already being used. Update ftrace self-test to ensure this occurs properly. Link: https://lkml.kernel.org/r/20230425225107.8525-4-beaub@linux.microsoft.com Suggested-by: Doug Cook <dcook@linux.microsoft.com> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2023-04-25 21:04:32 -04:00
..
rv	rv: remove redundant initialization of pointer ptr	2023-01-25 10:31:02 -05:00
blktrace.c	block: remove more NULL checks after bdev_get_queue()	2023-02-21 09:23:22 -07:00
bpf_trace.c	fprobe: Skip exit_handler if entry_handler returns !0	2023-03-28 18:52:22 -04:00
bpf_trace.h
error_report-traces.c
fgraph.c	arm64 fixes for 5.19-rc1:	2022-06-03 14:05:34 -07:00
fprobe.c	fprobe: Skip exit_handler if entry_handler returns !0	2023-03-28 18:52:22 -04:00
ftrace_internal.h
ftrace.c	ftrace: Show a list of all functions that have ever been enabled	2023-03-21 14:00:10 -04:00
Kconfig	tracing: Unbreak user events	2023-03-29 06:52:09 -04:00
kprobe_event_gen_test.c	tracing: Fix wrong return in kprobe_event_gen_test.c	2023-03-19 12:20:48 -04:00
Makefile	rv: Add Runtime Verification (RV) interface	2022-07-30 14:01:28 -04:00
pid_list.c	tracing: Cleanup double word in comment	2022-04-26 17:58:50 -04:00
pid_list.h	tracing: Create a sparse bitmask for pid filtering	2021-10-05 17:38:45 -04:00
power-traces.c
preemptirq_delay_test.c
rethook.c	rethook: fix a potential memleak in rethook_alloc()	2022-11-18 10:15:34 +09:00
ring_buffer_benchmark.c	ring_buffer: Remove unused "event" parameter	2022-11-23 19:08:30 -05:00
ring_buffer.c	ring-buffer: Clearly check null ptr returned by rb_set_head_page()	2023-04-25 20:11:26 -04:00
rpm-traces.c
synth_event_gen_test.c	tracing: Always use canonical ftrace path	2023-02-18 14:34:09 -05:00
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: Initialize integer variable to prevent garbage return value	2022-05-26 21:13:00 -04:00
trace_branch.c
trace_clock.c
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
trace_eprobe.c	kernel/trace: extract common part in process_fetch_insn	2023-02-24 10:04:13 +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
trace_events_filter.c	tracing: Add a way to filter function addresses to function names	2023-01-25 10:31:11 -05:00
trace_events_hist.c	tracing: Check field value in hist_field_name()	2023-03-09 22:17:06 -05:00
trace_events_inject.c	tracing: Support __rel_loc relative dynamic data location attribute	2021-12-06 15:37:21 -05:00
trace_events_synth.c	probes cleanup updates for v6.3:	2023-02-25 13:06:28 -08:00
trace_events_trigger.c	tracing: Do not synchronize freeing of trigger filter on boot up	2022-12-14 08:50:56 -05:00
trace_events_user.c	tracing/user_events: Prevent same address and bit per process	2023-04-25 21:04:32 -04:00
trace_events.c	tracing updates for 6.3:	2023-02-23 10:20:49 -08:00
trace_export.c	tracing: Fix TASK_COMM_LEN in trace event format file	2023-02-12 10:23:39 -05:00
trace_functions_graph.c	tracing: in_irq() cleanup	2021-10-13 18:19:41 -04:00
trace_functions.c	ftrace: disable preemption when recursion locked	2021-10-27 11:21:49 -04:00
trace_hwlat.c	tracing/hwlat: Replace sched_setaffinity with set_cpus_allowed_ptr	2023-03-19 13:23:22 -04:00
trace_irqsoff.c
trace_kdb.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	kernel/trace: extract common part in process_fetch_insn	2023-02-24 10:04:13 +09:00
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c	tracing/osnoise: set several trace_osnoise.c variables storage-class-specifier to static	2023-03-19 12:20:48 -04:00
trace_output.c	tracing: Fix print_fields() for __dyn_loc/__rel_loc	2023-04-25 20:11:26 -04:00
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	kernel/trace: Provide default impelentations defined in trace_probe_tmpl.h	2023-02-24 09:44:27 +09:00
trace_probe_tmpl.h	kernel/trace: extract common part in process_fetch_insn	2023-02-24 10:04:13 +09:00
trace_probe.c	kernel/trace: Introduce trace_probe_print_args and use it in *probes	2023-02-24 09:44:15 +09:00
trace_probe.h	kernel/trace: Introduce trace_probe_print_args and use it in *probes	2023-02-24 09:44:15 +09:00
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	sched/tracing: Append prev_state to tp args instead	2022-05-12 00:37:11 +02:00
trace_selftest_dynamic.c
trace_selftest.c	ftrace: selftest: remove broken trace_direct_tramp	2023-03-21 13:59:29 -04:00
trace_seq.c	tracing: Acquire buffer from temparary trace sequence	2023-02-07 12:42:54 -05:00
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
trace_synth.h	tracing: Allow synthetic events to pass around stacktraces	2023-01-25 10:31:24 -05:00
trace_syscalls.c	tracing: Remove unused __bad_type_size() method	2022-11-17 20:21:06 -05:00
trace_uprobe.c	kernel/trace: extract common part in process_fetch_insn	2023-02-24 10:04:13 +09:00
trace.c	tracing: Add "fields" option to show raw trace event fields	2023-03-29 06:52:08 -04:00
trace.h	tracing: Add "fields" option to show raw trace event fields	2023-03-29 06:52:08 -04:00
tracing_map.c	tracing: Remove unused variable 'dups'	2022-10-03 12:20:31 -04:00
tracing_map.h