commit: ed6f1c996bfe4b6e520cf7a74b51cd6988d84420 From: Namhyung Kim <namhyung.kim@xxxxxxx> Date: Wed, 10 Apr 2013 09:18:12 +0900 Subject: tracing: Check return value of tracing_init_dentry() Check return value and bail out if it's NULL. Link: http://lkml.kernel.org/r/1365553093-10180-2-git-send-email-namhyung@xxxxxxxxxx Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Namhyung Kim <namhyung.kim@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html