diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 2523332bd998f40ae5b4bca9a4efbb26a1802342..a6d023c3b852f254ed0ae2234f586ca256d6d3a4 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1757,13 +1757,6 @@ asmlinkage int vprintk_emit(int facility, int level,
 	/* If called from the scheduler, we can not call up(). */
 	if (!in_sched) {
 		lockdep_off();
-		/*
-		 * Disable preemption to avoid being preempted while holding
-		 * console_sem which would prevent anyone from printing to
-		 * console
-		 */
-		preempt_disable();
-
 		/*
 		 * Try to acquire and then immediately release the console
 		 * semaphore.  The release will print out buffers and wake up
@@ -1771,7 +1764,6 @@ asmlinkage int vprintk_emit(int facility, int level,
 		 */
 		if (console_trylock())
 			console_unlock();
-		preempt_enable();
 		lockdep_on();
 	}
 
@@ -2122,7 +2114,20 @@ int console_trylock(void)
 		return 0;
 	}
 	console_locked = 1;
-	console_may_schedule = 0;
+	/*
+	 * When PREEMPT_COUNT disabled we can't reliably detect if it's
+	 * safe to schedule (e.g. calling printk while holding a spin_lock),
+	 * because preempt_disable()/preempt_enable() are just barriers there
+	 * and preempt_count() is always 0.
+	 *
+	 * RCU read sections have a separate preemption counter when
+	 * PREEMPT_RCU enabled thus we must take extra care and check
+	 * rcu_preempt_depth(), otherwise RCU read sections modify
+	 * preempt_count().
+	 */
+	console_may_schedule = !oops_in_progress &&
+			preemptible() &&
+			!rcu_preempt_depth();
 	return 1;
 }
 EXPORT_SYMBOL(console_trylock);