From: Namhyung Kim Date: Wed, 10 Apr 2013 00:18:12 +0000 (+0900) Subject: tracing: Check return value of tracing_init_dentry() X-Git-Tag: v3.2.45~92 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1b136c71e8858b068b7813fed270eb4668a217ca;p=thirdparty%2Fkernel%2Fstable.git 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 Cc: Namhyung Kim Signed-off-by: Namhyung Kim Signed-off-by: Steven Rostedt Signed-off-by: Ben Hutchings --- diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8aa3ca73cfdab..0ec6c349bbc9c 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 ca811a4af980a..c5b20a3564a81 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 96cffb269e736..847f88a6194b4 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)