forked from Minki/linux
rtla: Avoid record NULL pointer dereference
Fix the following null/deref_null.cocci errors:
./tools/tracing/rtla/src/osnoise_hist.c:870:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/osnoise_top.c:650:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/timerlat_hist.c:905:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/timerlat_top.c:700:31-36: ERROR: record is NULL but dereferenced.
"record" is NULL before calling osnoise_init_trace_tool.
Add a tag "out_free" to avoid dereferring a NULL pointer.
Link: https://lkml.kernel.org/r/ae0e4500d383db0884eb2820286afe34ca303778.1651247710.git.bristot@kernel.org
Link: https://lore.kernel.org/r/20220408151406.34823-1-wanjiabing@vivo.com/
Cc: kael_w@yeah.net
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Fixes: 51d64c3a18
("rtla: Add -e/--event support")
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
parent
fe4d0d5dde
commit
2a6b52ed72
@ -809,7 +809,7 @@ int osnoise_hist_main(int argc, char *argv[])
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retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param);
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if (retval) {
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err_msg("Failed to set sched parameters\n");
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goto out_hist;
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goto out_free;
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}
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}
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@ -819,7 +819,7 @@ int osnoise_hist_main(int argc, char *argv[])
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record = osnoise_init_trace_tool("osnoise");
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if (!record) {
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err_msg("Failed to enable the trace instance\n");
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goto out_hist;
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goto out_free;
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}
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if (params->events) {
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@ -869,6 +869,7 @@ int osnoise_hist_main(int argc, char *argv[])
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out_hist:
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trace_events_destroy(&record->trace, params->events);
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params->events = NULL;
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out_free:
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osnoise_free_histogram(tool->data);
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out_destroy:
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osnoise_destroy_tool(record);
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@ -572,7 +572,7 @@ int osnoise_top_main(int argc, char **argv)
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retval = osnoise_top_apply_config(tool, params);
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if (retval) {
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err_msg("Could not apply config\n");
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goto out_top;
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goto out_free;
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}
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trace = &tool->trace;
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@ -580,14 +580,14 @@ int osnoise_top_main(int argc, char **argv)
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retval = enable_osnoise(trace);
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if (retval) {
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err_msg("Failed to enable osnoise tracer\n");
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goto out_top;
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goto out_free;
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}
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if (params->set_sched) {
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retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param);
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if (retval) {
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err_msg("Failed to set sched parameters\n");
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goto out_top;
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goto out_free;
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}
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}
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@ -597,7 +597,7 @@ int osnoise_top_main(int argc, char **argv)
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record = osnoise_init_trace_tool("osnoise");
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if (!record) {
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err_msg("Failed to enable the trace instance\n");
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goto out_top;
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goto out_free;
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}
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if (params->events) {
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@ -649,6 +649,7 @@ int osnoise_top_main(int argc, char **argv)
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out_top:
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trace_events_destroy(&record->trace, params->events);
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params->events = NULL;
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out_free:
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osnoise_free_top(tool->data);
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osnoise_destroy_tool(record);
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osnoise_destroy_tool(tool);
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@ -821,7 +821,7 @@ int timerlat_hist_main(int argc, char *argv[])
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retval = timerlat_hist_apply_config(tool, params);
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if (retval) {
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err_msg("Could not apply config\n");
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goto out_hist;
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goto out_free;
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}
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trace = &tool->trace;
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@ -829,14 +829,14 @@ int timerlat_hist_main(int argc, char *argv[])
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retval = enable_timerlat(trace);
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if (retval) {
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err_msg("Failed to enable timerlat tracer\n");
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goto out_hist;
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goto out_free;
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}
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if (params->set_sched) {
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retval = set_comm_sched_attr("timerlat/", ¶ms->sched_param);
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if (retval) {
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err_msg("Failed to set sched parameters\n");
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goto out_hist;
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goto out_free;
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}
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}
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@ -844,7 +844,7 @@ int timerlat_hist_main(int argc, char *argv[])
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dma_latency_fd = set_cpu_dma_latency(params->dma_latency);
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if (dma_latency_fd < 0) {
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err_msg("Could not set /dev/cpu_dma_latency.\n");
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goto out_hist;
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goto out_free;
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}
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}
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@ -854,7 +854,7 @@ int timerlat_hist_main(int argc, char *argv[])
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record = osnoise_init_trace_tool("timerlat");
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if (!record) {
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err_msg("Failed to enable the trace instance\n");
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goto out_hist;
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goto out_free;
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}
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if (params->events) {
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@ -904,6 +904,7 @@ out_hist:
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close(dma_latency_fd);
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trace_events_destroy(&record->trace, params->events);
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params->events = NULL;
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out_free:
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timerlat_free_histogram(tool->data);
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osnoise_destroy_tool(record);
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osnoise_destroy_tool(tool);
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@ -612,7 +612,7 @@ int timerlat_top_main(int argc, char *argv[])
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retval = timerlat_top_apply_config(top, params);
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if (retval) {
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err_msg("Could not apply config\n");
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goto out_top;
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goto out_free;
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}
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trace = &top->trace;
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@ -620,14 +620,14 @@ int timerlat_top_main(int argc, char *argv[])
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retval = enable_timerlat(trace);
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if (retval) {
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err_msg("Failed to enable timerlat tracer\n");
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goto out_top;
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goto out_free;
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}
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if (params->set_sched) {
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retval = set_comm_sched_attr("timerlat/", ¶ms->sched_param);
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if (retval) {
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err_msg("Failed to set sched parameters\n");
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goto out_top;
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goto out_free;
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}
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}
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@ -635,7 +635,7 @@ int timerlat_top_main(int argc, char *argv[])
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dma_latency_fd = set_cpu_dma_latency(params->dma_latency);
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if (dma_latency_fd < 0) {
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err_msg("Could not set /dev/cpu_dma_latency.\n");
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goto out_top;
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goto out_free;
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}
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}
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@ -645,7 +645,7 @@ int timerlat_top_main(int argc, char *argv[])
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record = osnoise_init_trace_tool("timerlat");
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if (!record) {
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err_msg("Failed to enable the trace instance\n");
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goto out_top;
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goto out_free;
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}
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if (params->events) {
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@ -699,6 +699,7 @@ out_top:
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close(dma_latency_fd);
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trace_events_destroy(&record->trace, params->events);
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params->events = NULL;
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out_free:
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timerlat_free_top(top->data);
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osnoise_destroy_tool(record);
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osnoise_destroy_tool(top);
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