vmm: check ring-buffer capacity in pl011 model

Ref #3620
2020-01-23 15:05:23 +01:00 · 2020-01-23 15:05:23 +01:00 · 2e2625e952
parent 55c3eb7c14
commit 2e2625e952
1 changed files with 1 additions and 1 deletions
--- a/repos/os/src/server/vmm/spec/arm_v8/pl011.cc
+++ b/repos/os/src/server/vmm/spec/arm_v8/pl011.cc
@ -64,7 +64,7 @@ void Pl011::_read()
 {
 	if (!_terminal.avail()) return;

-	while (_terminal.avail()) {
+	while (_terminal.avail() && _rx_buf.avail_capacity()) {
 		unsigned char c = 0;
 		_terminal.read(&c, 1);
 		_rx_buf.add(c);