diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b2fb25aefb2f..67cee2774a6b 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2600,6 +2600,9 @@ int trace_array_printk(struct trace_array *tr, if (!(global_trace.trace_flags & TRACE_ITER_PRINTK)) return 0; + if (!tr) + return -ENOENT; + va_start(ap, fmt); ret = trace_array_vprintk(tr, ip, fmt, ap); va_end(ap); diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index af969f753e5e..5bf072e437c4 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -790,6 +790,8 @@ static int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set) char *event = NULL, *sub = NULL, *match; int ret; + if (!tr) + return -ENOENT; /* * The buf format can be : * *: means any event by that name.