--- zzzz-none-000/linux-3.10.107/drivers/tty/vt/selection.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/tty/vt/selection.c	2021-02-04 17:41:59.000000000 +0000
@@ -24,6 +24,7 @@
 #include <linux/selection.h>
 #include <linux/tiocl.h>
 #include <linux/console.h>
+#include <linux/tty_flip.h>
 
 /* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
 #define isspace(c)	((c) == ' ')
@@ -346,8 +347,8 @@
 	console_unlock();
 
 	ld = tty_ldisc_ref_wait(tty);
+	tty_buffer_lock_exclusive(&vc->port);
 
-	/* FIXME: this is completely unsafe */
 	add_wait_queue(&vc->paste_wait, &wait);
 	while (sel_buffer && sel_buffer_lth > pasted) {
 		set_current_state(TASK_INTERRUPTIBLE);
@@ -355,14 +356,16 @@
 			schedule();
 			continue;
 		}
+		__set_current_state(TASK_RUNNING);
 		count = sel_buffer_lth - pasted;
-		count = min(count, tty->receive_room);
-		ld->ops->receive_buf(tty, sel_buffer + pasted, NULL, count);
+		count = tty_ldisc_receive_buf(ld, sel_buffer + pasted, NULL,
+					      count);
 		pasted += count;
 	}
 	remove_wait_queue(&vc->paste_wait, &wait);
 	__set_current_state(TASK_RUNNING);
 
+	tty_buffer_unlock_exclusive(&vc->port);
 	tty_ldisc_deref(ld);
 	return 0;
 }