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authorDaniel Bristot de Oliveira <bristot@kernel.org>2022-02-08 17:36:21 +0300
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-02-08 19:23:09 +0300
commit4bbf59a9db44c78dd3e5c72057548f7c1eb8d2ba (patch)
tree78568037a2df723110f8b7357c6e685014dc60a4 /tools/tracing
parent1a6229096bb501495442ab47761d746c1ae791e1 (diff)
downloadlinux-4bbf59a9db44c78dd3e5c72057548f7c1eb8d2ba.tar.xz
rtla: Fix segmentation fault when failing to enable -t
rtla osnoise and timerlat are causing a segmentation fault when running with the --trace option on a kernel that does not support multiple instances. For example: [root@f34 rtla]# rtla osnoise top -t failed to enable the tracer osnoise Could not enable osnoiser tracer for tracing Failed to enable the trace instance Segmentation fault (core dumped) This error happens because the exit code of the tools is trying to destroy the trace instance that failed to be created. Make osnoise_destroy_tool() aware of possible NULL osnoise_tool *, and do not attempt to destroy it. This also simplifies the exit code. Link: https://lkml.kernel.org/r/5660a2b6bf66c2655842360f2d7f6b48db5dba23.1644327249.git.bristot@kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Fixes: 1eceb2fc2ca5 ("rtla/osnoise: Add osnoise top mode") Fixes: 829a6c0b5698 ("rtla/osnoise: Add the hist mode") Fixes: a828cd18bc4a ("rtla: Add timerlat tool and timelart top mode") Fixes: 1eeb6328e8b3 ("rtla/timerlat: Add timerlat hist mode") Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/tracing')
-rw-r--r--tools/tracing/rtla/src/osnoise.c3
-rw-r--r--tools/tracing/rtla/src/osnoise_hist.c7
-rw-r--r--tools/tracing/rtla/src/osnoise_top.c7
-rw-r--r--tools/tracing/rtla/src/timerlat_hist.c7
-rw-r--r--tools/tracing/rtla/src/timerlat_top.c7
5 files changed, 15 insertions, 16 deletions
diff --git a/tools/tracing/rtla/src/osnoise.c b/tools/tracing/rtla/src/osnoise.c
index 7b73d1eccd0e..5648f9252e58 100644
--- a/tools/tracing/rtla/src/osnoise.c
+++ b/tools/tracing/rtla/src/osnoise.c
@@ -750,6 +750,9 @@ void osnoise_put_context(struct osnoise_context *context)
*/
void osnoise_destroy_tool(struct osnoise_tool *top)
{
+ if (!top)
+ return;
+
trace_instance_destroy(&top->trace);
if (top->context)
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c
index 180fcbe423cd..1f0b7fce55cf 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -701,9 +701,9 @@ osnoise_hist_set_signals(struct osnoise_hist_params *params)
int osnoise_hist_main(int argc, char *argv[])
{
struct osnoise_hist_params *params;
+ struct osnoise_tool *record = NULL;
+ struct osnoise_tool *tool = NULL;
struct trace_instance *trace;
- struct osnoise_tool *record;
- struct osnoise_tool *tool;
int return_value = 1;
int retval;
@@ -792,9 +792,8 @@ int osnoise_hist_main(int argc, char *argv[])
out_hist:
osnoise_free_histogram(tool->data);
out_destroy:
+ osnoise_destroy_tool(record);
osnoise_destroy_tool(tool);
- if (params->trace_output)
- osnoise_destroy_tool(record);
free(params);
out_exit:
exit(return_value);
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
index 332b2ac205fc..c67dc28ef716 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -483,9 +483,9 @@ static void osnoise_top_set_signals(struct osnoise_top_params *params)
int osnoise_top_main(int argc, char **argv)
{
struct osnoise_top_params *params;
+ struct osnoise_tool *record = NULL;
+ struct osnoise_tool *tool = NULL;
struct trace_instance *trace;
- struct osnoise_tool *record;
- struct osnoise_tool *tool;
int return_value = 1;
int retval;
@@ -571,9 +571,8 @@ int osnoise_top_main(int argc, char **argv)
out_top:
osnoise_free_top(tool->data);
+ osnoise_destroy_tool(record);
osnoise_destroy_tool(tool);
- if (params->trace_output)
- osnoise_destroy_tool(record);
out_exit:
exit(return_value);
}
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 235f9620ef3d..436a799f9adf 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -729,9 +729,9 @@ timerlat_hist_set_signals(struct timerlat_hist_params *params)
int timerlat_hist_main(int argc, char *argv[])
{
struct timerlat_hist_params *params;
+ struct osnoise_tool *record = NULL;
+ struct osnoise_tool *tool = NULL;
struct trace_instance *trace;
- struct osnoise_tool *record;
- struct osnoise_tool *tool;
int return_value = 1;
int retval;
@@ -813,9 +813,8 @@ int timerlat_hist_main(int argc, char *argv[])
out_hist:
timerlat_free_histogram(tool->data);
+ osnoise_destroy_tool(record);
osnoise_destroy_tool(tool);
- if (params->trace_output)
- osnoise_destroy_tool(record);
free(params);
out_exit:
exit(return_value);
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index 1ebd5291539c..d4187f6534ed 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -521,9 +521,9 @@ timerlat_top_set_signals(struct timerlat_top_params *params)
int timerlat_top_main(int argc, char *argv[])
{
struct timerlat_top_params *params;
+ struct osnoise_tool *record = NULL;
+ struct osnoise_tool *top = NULL;
struct trace_instance *trace;
- struct osnoise_tool *record;
- struct osnoise_tool *top;
int return_value = 1;
int retval;
@@ -609,9 +609,8 @@ int timerlat_top_main(int argc, char *argv[])
out_top:
timerlat_free_top(top->data);
+ osnoise_destroy_tool(record);
osnoise_destroy_tool(top);
- if (params->trace_output)
- osnoise_destroy_tool(record);
free(params);
out_exit:
exit(return_value);