From: "Steven Rostedt (VMware)" As stack tracing now requires "rcu watching", force RCU to be watching when recording a stack trace. Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index c4536c449021..a4208cebb42b 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2568,7 +2568,12 @@ static inline void ftrace_trace_stack(struct trace_array *tr, void __trace_stack(struct trace_array *tr, unsigned long flags, int skip, int pc) { + if (unlikely(rcu_irq_enter_disabled())) + return; + + rcu_irq_enter(); __ftrace_trace_stack(tr->trace_buffer.buffer, flags, skip, pc, NULL); + rcu_irq_exit(); } /** -- 2.10.2