diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_stack.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index b746399ab59c..5f29402bff0f 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -88,6 +88,12 @@ check_stack(unsigned long ip, unsigned long *stack) local_irq_save(flags); arch_spin_lock(&max_stack_lock); + /* + * RCU may not be watching, make it see us. + * The stack trace code uses rcu_sched. + */ + rcu_irq_enter(); + /* In case another CPU set the tracer_frame on us */ if (unlikely(!frame_size)) this_size -= tracer_frame; @@ -169,6 +175,7 @@ check_stack(unsigned long ip, unsigned long *stack) } out: + rcu_irq_exit(); arch_spin_unlock(&max_stack_lock); local_irq_restore(flags); } |