mirror-linux/kernel/trace
Masami Hiramatsu (Google) 66bcf65d6c tracing/probes: Fix to avoid double count of the string length on the array
If an array is specified with the ustring or symstr, the length of the
strings are accumlated on both of 'ret' and 'total', which means the
length is double counted.
Just set the length to the 'ret' value for avoiding double counting.

Link: https://lore.kernel.org/all/168908492917.123124.15076463491122036025.stgit@devnote2/

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/8819b154-2ba1-43c3-98a2-cbde20892023@moroto.mountain/
Fixes: 88903c4643 ("tracing/probe: Add ustring type for user-space string")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-07-14 00:35:53 +09:00
..
rv tracing/tools: Updates for 6.4 2023-04-28 16:11:26 -07:00
Kconfig tracing: Unbreak user events 2023-03-29 06:52:09 -04:00
Makefile
blktrace.c block: remove more NULL checks after bdev_get_queue() 2023-02-21 09:23:22 -07:00
bpf_trace.c bpf: Add extra path pointer check to d_path helper 2023-06-07 15:03:43 +02:00
bpf_trace.h
error_report-traces.c
fgraph.c
fprobe.c fprobes: Add a comment why fprobe_kprobe_handler exits if kprobe is running 2023-07-14 00:24:00 +09:00
ftrace.c Minor tracing updates: 2023-05-05 13:11:02 -07:00
ftrace_internal.h
kprobe_event_gen_test.c tracing: Fix wrong return in kprobe_event_gen_test.c 2023-03-19 12:20:48 -04:00
pid_list.c
pid_list.h
power-traces.c
preemptirq_delay_test.c
rethook.c fprobe: Ensure running fprobe_exit_handler() finished before calling rethook_free() 2023-07-11 09:17:01 +09:00
ring_buffer.c tracing updates for 6.4: 2023-04-28 15:57:53 -07:00
ring_buffer_benchmark.c ring_buffer: Remove unused "event" parameter 2022-11-23 19:08:30 -05:00
rpm-traces.c
synth_event_gen_test.c tracing: Always use canonical ftrace path 2023-02-18 14:34:09 -05:00
trace.c tracing: Only make selftest conditionals affect the global_trace 2023-05-28 21:15:33 -04:00
trace.h tracing: Add "fields" option to show raw trace event fields 2023-03-29 06:52:08 -04:00
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
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
trace_entries.h
trace_eprobe.c kernel/trace: Fix cleanup logic of enable_trace_eprobe 2023-07-11 00:44:57 +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.c tracing: Rename stacktrace field to common_stacktrace 2023-05-23 23:38:23 -04:00
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_filter_test.h
trace_events_hist.c tracing: Rename stacktrace field to common_stacktrace 2023-05-23 23:38:23 -04:00
trace_events_inject.c
trace_events_synth.c tracing/synthetic: Make lastcmd_mutex static 2023-04-06 15:08:18 -04:00
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: Add auto cleanup and future persist flag 2023-06-14 13:43:27 -04:00
trace_export.c tracing: Fix TASK_COMM_LEN in trace event format file 2023-02-12 10:23:39 -05:00
trace_functions.c
trace_functions_graph.c
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.c kernel/trace: extract common part in process_fetch_insn 2023-02-24 10:04:13 +09:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c tracing/timerlat: Always wakeup the timerlat thread 2023-05-23 11:54:31 -04:00
trace_output.c tracing: Modify print_fields() for fields output order 2023-06-14 12:41:52 -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
trace_probe.c tracing: Rename kvfree_rcu() to kvfree_rcu_mightsleep() 2023-04-05 13:48:03 +00:00
trace_probe.h tracing/probe: trace_probe_primary_from_call(): checked list_first_entry 2023-05-31 18:47:10 +09:00
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 tracing/probes: Fix to avoid double count of the string length on the array 2023-07-14 00:35:53 +09:00
trace_recursion_record.c
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest.c tracing: Have function_graph selftest call cond_resched() 2023-05-28 21:15:46 -04:00
trace_selftest_dynamic.c
trace_seq.c tracing: Acquire buffer from temparary trace sequence 2023-02-07 12:42:54 -05:00
trace_stack.c
trace_stat.c
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
tracing_map.c tracing: Remove unused variable 'dups' 2022-10-03 12:20:31 -04:00
tracing_map.h