Fix an issue in the tracing_set_tracer() where the variable ret could
be used uninitialized under certain conditions. Specifically, when
t->use_max_tr is true but tr->cond_snapshot is false, the code would
check the value of ret without first initializing it.
Fixes: a35873a0993b ("tracing: Add conditional snapshot")
Closes:
https://scan7.scan.coverity.com/#/project-view/52337/11354?selectedIssue=1602786
Signed-off-by: Dheeraj Reddy Jonnalagadda <[email protected]>
---
kernel/trace/trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a04348ab7ccc..28f111c5b3a5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6079,7 +6079,7 @@ int tracing_set_tracer(struct trace_array *tr, const char
*buf)
#ifdef CONFIG_TRACER_MAX_TRACE
bool had_max_tr;
#endif
- int ret;
+ int ret = 0;
guard(mutex)(&trace_types_lock);
--
2.34.1
