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authorNamhyung Kim <namhyung.kim@lge.com>2013-04-10 09:18:12 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-05-07 20:33:08 -0700
commitc8a6694f331ca69d8f074730b425920a7a0131d2 (patch)
treeec2ba46cb38d913ad69c64afd568dd095ebf1234 /kernel
parent7c6d8df06744fb287c7ee4d29f028d3f0a218b9e (diff)
tracing: Check return value of tracing_init_dentry()
commit ed6f1c996bfe4b6e520cf7a74b51cd6988d84420 upstream. Check return value and bail out if it's NULL. Link: http://lkml.kernel.org/r/1365553093-10180-2-git-send-email-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace_stack.c2
-rw-r--r--kernel/trace/trace_stat.c2
3 files changed, 6 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 66338c4f7f4b..7713d1b33da9 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5028,6 +5028,8 @@ static __init int tracer_init_debugfs(void)
trace_access_lock_init();
d_tracer = tracing_init_dentry();
+ if (!d_tracer)
+ return 0;
trace_create_file("trace_options", 0644, d_tracer,
NULL, &tracing_iter_fops);
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index 4141973061a3..b20428c5efe2 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 96cffb269e73..847f88a6194b 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)