From: Namhyung Kim <[email protected]>
Check return value and bail out if it's NULL.
Link: http://lkml.kernel.org/r/[email protected]
Cc: Frederic Weisbecker <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: [email protected]
Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
---
kernel/trace/trace.c | 2 ++
kernel/trace/trace_stack.c | 2 ++
kernel/trace/trace_stat.c | 2 ++
3 files changed, 6 insertions(+)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 07860b9..7297079 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5953,6 +5953,8 @@ static __init int tracer_init_debugfs(void)
trace_access_lock_init();
d_tracer = tracing_init_dentry();
+ if (!d_tracer)
+ return 0;
init_tracer_debugfs(&global_trace, d_tracer);
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index aab277b..8c3f37e 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -431,6 +431,8 @@ static __init int stack_trace_init(void)
struct dentry *d_tracer;
d_tracer = tracing_init_dentry();
+ if (!d_tracer)
+ return 0;
trace_create_file("stack_max_size", 0644, d_tracer,
&max_stack_size, &stack_max_size_fops);
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index 96cffb2..847f88a 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -307,6 +307,8 @@ static int tracing_stat_init(void)
struct dentry *d_tracing;
d_tracing = tracing_init_dentry();
+ if (!d_tracing)
+ return 0;
stat_dir = debugfs_create_dir("trace_stat", d_tracing);
if (!stat_dir)
--
1.7.10.4