The `record` variable is NULL when tracing is not requested:
struct osnoise_tool *record = NULL;
if (params->trace_output) {
record = osnoise_init_trace_tool("osnoise");
....
Value of `&record->trace` in this case is NULL just because
the `trace` member is the first member `struct osnoise_tool` with offset 0.
`&record->trace` just returns the offset.
Explicit dereference `record->trace' would cause segmentation fault.
Add explicit check for zero `record`.
Signed-off-by: Costa Shulyupin <[email protected]>
---
tools/tracing/rtla/src/osnoise_hist.c | 4 ++--
tools/tracing/rtla/src/osnoise_top.c | 4 ++--
tools/tracing/rtla/src/timerlat_hist.c | 4 ++--
tools/tracing/rtla/src/timerlat_top.c | 6 +++---
4 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/tools/tracing/rtla/src/osnoise_hist.c
b/tools/tracing/rtla/src/osnoise_hist.c
index 214e2c93fde01..46add229967b1 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -970,7 +970,7 @@ int osnoise_hist_main(int argc, char *argv[])
goto out_hist;
}
- if (trace_is_off(&tool->trace, &record->trace))
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL))
break;
}
@@ -980,7 +980,7 @@ int osnoise_hist_main(int argc, char *argv[])
return_value = 0;
- if (trace_is_off(&tool->trace, &record->trace)) {
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL)) {
printf("rtla osnoise hit stop tracing\n");
if (params->trace_output) {
printf(" Saving trace to %s\n", params->trace_output);
diff --git a/tools/tracing/rtla/src/osnoise_top.c
b/tools/tracing/rtla/src/osnoise_top.c
index 45647495ce3bd..a0302b30da122 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -801,7 +801,7 @@ int osnoise_top_main(int argc, char **argv)
if (!params->quiet)
osnoise_print_stats(params, tool);
- if (trace_is_off(&tool->trace, &record->trace))
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL))
break;
}
@@ -810,7 +810,7 @@ int osnoise_top_main(int argc, char **argv)
return_value = 0;
- if (trace_is_off(&tool->trace, &record->trace)) {
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL)) {
printf("osnoise hit stop tracing\n");
if (params->trace_output) {
printf(" Saving trace to %s\n", params->trace_output);
diff --git a/tools/tracing/rtla/src/timerlat_hist.c
b/tools/tracing/rtla/src/timerlat_hist.c
index 4403cc4eba302..d92a894fecc00 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -1342,7 +1342,7 @@ int timerlat_hist_main(int argc, char *argv[])
goto out_hist;
}
- if (trace_is_off(&tool->trace, &record->trace))
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL))
break;
/* is there still any user-threads ? */
@@ -1363,7 +1363,7 @@ int timerlat_hist_main(int argc, char *argv[])
return_value = 0;
- if (trace_is_off(&tool->trace, &record->trace)) {
+ if (trace_is_off(&tool->trace, record ? &record->trace : NULL)) {
printf("rtla timerlat hit stop tracing\n");
if (!params->no_aa)
diff --git a/tools/tracing/rtla/src/timerlat_top.c
b/tools/tracing/rtla/src/timerlat_top.c
index 059b468981e4d..f05ef7aadf515 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -1093,7 +1093,7 @@ int timerlat_top_main(int argc, char *argv[])
while (!stop_tracing) {
sleep(params->sleep_time);
- if (params->aa_only && !trace_is_off(&top->trace,
&record->trace))
+ if (params->aa_only && !trace_is_off(&top->trace, record ?
&record->trace : NULL))
continue;
retval = tracefs_iterate_raw_events(trace->tep,
@@ -1110,7 +1110,7 @@ int timerlat_top_main(int argc, char *argv[])
if (!params->quiet)
timerlat_print_stats(params, top);
- if (trace_is_off(&top->trace, &record->trace))
+ if (trace_is_off(&top->trace, record ? &record->trace : NULL))
break;
/* is there still any user-threads ? */
@@ -1131,7 +1131,7 @@ int timerlat_top_main(int argc, char *argv[])
return_value = 0;
- if (trace_is_off(&top->trace, &record->trace)) {
+ if (trace_is_off(&top->trace, record ? &record->trace : NULL)) {
printf("rtla timerlat hit stop tracing\n");
if (!params->no_aa)
--
2.47.0
