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linux-stable/kernel/trace
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Masami Hiramatsu (Google) 797311bce5 tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails 
Fix to record 0-length data to data_loc in fetch_store_string*() if it fails
to get the string data.
Currently those expect that the data_loc is updated by store_trace_args() if
it returns the error code. However, that does not work correctly if the
argument is an array of strings. In that case, store_trace_args() only clears
the first entry of the array (which may have no error) and leaves other
entries. So it should be cleared by fetch_store_string*() itself.
Also, 'dyndata' and 'maxlen' in store_trace_args() should be updated
only if it is used (ret > 0 and argument is a dynamic data.)

Link: https://lore.kernel.org/all/168908496683.123124.4761206188794205601.stgit@devnote2/

Fixes: 40b53b7718 ("tracing: probeevent: Add array type support")
Cc: stable@vger.kernel.org
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
 		2023-07-14 17:04:58 +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 rv: Add Runtime Verification (RV) interface 2022-07-30 14:01:28 -04:00
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
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error_report-traces.c
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fgraph.c arm64 fixes for 5.19-rc1: 2022-06-03 14:05:34 -07:00
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
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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 tracing: Cleanup double word in comment 2022-04-26 17:58:50 -04:00
pid_list.h
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power-traces.c
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preemptirq_delay_test.c
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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
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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 Revert "tracing: Add "(fault)" name injection to kernel probes" 2023-07-14 00:37:43 +09:00
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
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trace_clock.c
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trace_dynevent.c tracing: Free buffers when a used dynamic event is removed 2022-11-23 19:07:12 -05:00
trace_dynevent.h
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trace_entries.h
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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
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trace_events_hist.c tracing: Rename stacktrace field to common_stacktrace 2023-05-23 23:38:23 -04:00
trace_events_inject.c
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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
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trace_functions_graph.c
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trace_hwlat.c tracing/hwlat: Replace sched_setaffinity with set_cpus_allowed_ptr 2023-03-19 13:23:22 -04:00
trace_irqsoff.c
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trace_kdb.c
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trace_kprobe.c kernel/trace: extract common part in process_fetch_insn 2023-02-24 10:04:13 +09:00
trace_kprobe_selftest.c
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trace_kprobe_selftest.h
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trace_mmiotrace.c
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trace_nop.c
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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
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trace_probe.c Revert "tracing: Add "(fault)" name injection to kernel probes" 2023-07-14 00:37:43 +09:00
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 tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails 2023-07-14 17:04:58 +09:00
trace_probe_tmpl.h tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails 2023-07-14 17:04:58 +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.c tracing: Have function_graph selftest call cond_resched() 2023-05-28 21:15:46 -04:00
trace_selftest_dynamic.c
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trace_seq.c tracing: Acquire buffer from temparary trace sequence 2023-02-07 12:42:54 -05:00
trace_stack.c
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trace_stat.c
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trace_stat.h
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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 tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails 2023-07-14 17:04:58 +09:00
tracing_map.c tracing: Remove unused variable 'dups' 2022-10-03 12:20:31 -04:00
tracing_map.h
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