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Linus Torvalds 4941a17751 ring-buffer fixes for v6.18: 
- Do not allow mmapped ring buffer to be split
 
   When the ring buffer VMA is split by a partial munmap or a MAP_FIXED, the
   kernel calls vm_ops->close() on each portion. This causes the
   ring_buffer_unmap() to be called multiple times. This causes subsequent
   calls to return -ENODEV and triggers a warning.
 
   There's no reason to allow user space to split up memory mapping of the
   ring buffer. Have it return -EINVAL when that happens.
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Merge tag 'trace-ringbuffer-v6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ring-buffer fix from Steven Rostedt:

 - Do not allow mmapped ring buffer to be split

   When the ring buffer VMA is split by a partial munmap or a MAP_FIXED,
   the kernel calls vm_ops->close() on each portion. This causes the
   ring_buffer_unmap() to be called multiple times. This causes
   subsequent calls to return -ENODEV and triggers a warning.

   There's no reason to allow user space to split up memory mapping of
   the ring buffer. Have it return -EINVAL when that happens.

* tag 'trace-ringbuffer-v6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs
2025-11-26 13:16:22 -08:00
..
rv rv: Make rtapp/pagefault monitor depends on CONFIG_MMU 2025-10-20 12:47:40 +02:00
blktrace.c Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
bpf_trace.c file->f_path constification 2025-10-03 16:32:36 -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 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.c ftrace: bpf: Fix IPMODIFY + DIRECT in modify_ftrace_direct() 2025-11-03 17:22:06 -08:00
ftrace_internal.h function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE 2024-06-10 18:08:23 -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 rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get() 2024-05-01 23:18:48 +09:00
ring_buffer.c ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up 2025-11-06 19:38:54 -05:00
ring_buffer_benchmark.c ring-buffer: Use str_low_high() helper in ring_buffer_producer() 2024-10-19 11:12:25 -04:00
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.c tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs 2025-11-25 15:21:16 -05:00
trace.h tracing: Replace syscall RCU pointer assignment with READ/WRITE_ONCE() 2025-09-23 09:29:29 -04:00
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: branch: Use trace_tracing_is_on_cpu() instead of "disabled" field 2025-05-09 15:19:10 -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: 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.c tracing: Fix lock imbalance in s_start() memory allocation failure path 2025-10-03 12:13:12 -04:00
trace_events_filter.c tracing changes for 6.17 2025-08-01 10:29:36 -07:00
trace_events_filter_test.h
trace_events_hist.c tracing: Fix memory leaks in create_field_var() 2025-11-06 19:51:33 -05:00
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: 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 tracing updates for v6.18: 2025-10-05 09:43:36 -07:00
trace_export.c
trace_fprobe.c tracing: tprobe-events: Fix to put tracepoint_user when disable the tprobe 2025-11-07 07:36:20 +09:00
trace_functions.c tracing updates for v6.16: 2025-05-29 21:04:36 -07:00
trace_functions_graph.c fgraph: Copy args in intermediate storage with entry 2025-08-22 17:32:35 -04:00
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: Fix irqoff tracers on failure of acquiring calltime 2025-10-08 12:10:44 -04:00
trace_kdb.c ring-buffer: Remove ring_buffer_read_prepare_sync() 2025-07-22 20:01:41 -04:00
trace_kprobe.c tracing: Fix race condition in kprobe initialization causing NULL pointer dereference 2025-10-02 08:05:01 +09:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
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 clean up and fixes for v6.18: 2025-10-09 12:18:22 -07:00
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.c Probes updates for v6.17: 2025-07-30 15:38:01 -07:00
trace_probe.h tracing: Fix race condition in kprobe initialization causing NULL pointer dereference 2025-10-02 08:05:01 +09:00
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_recursion_record.c
trace_sched_switch.c tracing: Ensure optimized hashing works 2025-09-30 17:27:58 -04:00
trace_sched_wakeup.c tracing: Fix wakeup tracers on failure of acquiring calltime 2025-10-08 12:10:26 -04:00
trace_selftest.c fgraph: Pass ftrace_regs to retfunc 2024-12-26 10:50:03 -05:00
trace_selftest_dynamic.c
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 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 tracing: Have syscall trace events show "0x" for values greater than 10 2025-09-23 09:29:29 -04:00
trace_uprobe.c tracing: Fix race condition in kprobe initialization causing NULL pointer dereference 2025-10-02 08:05:01 +09:00
tracing_map.c tracing: Use vmalloc_array() to improve code 2025-09-23 09:31:58 -04:00
tracing_map.h