diff options
| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-04-10 09:18:12 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-05-13 15:02:17 +0100 |
| commit | 1b136c71e8858b068b7813fed270eb4668a217ca (patch) | |
| tree | eae920492d9e3ef20958255ba6fc54451c1bc658 | |
| parent | 64384570408351682ab7cd35a5f7c5b9c9c7856c (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
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | kernel/trace/trace.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_stack.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_stat.c | 2 |
3 files changed, 6 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8aa3ca73cfda..0ec6c349bbc9 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4563,6 +4563,8 @@ static __init int tracer_init_debugfs(void) trace_access_lock_init(); d_tracer = tracing_init_dentry(); + if (!d_tracer) + return 0; trace_create_file("tracing_enabled", 0644, d_tracer, &global_trace, &tracing_ctrl_fops); diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index ca811a4af980..c5b20a3564a8 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -411,6 +411,8 @@ 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) |