From 2a8b7594bc508a1f9af0e2fb3455c3d8dc4de006 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Fri, 4 Jun 2021 09:07:24 +0200
Subject: [PATCH] pulse-server: avoid overflow

Make sure the requested bytes never go below 0.

See #1258
---
 src/modules/module-protocol-pulse/pulse-server.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/module-protocol-pulse/pulse-server.c b/src/modules/module-protocol-pulse/pulse-server.c
index 993c23280..ddb85b0a1 100644
--- a/src/modules/module-protocol-pulse/pulse-server.c
+++ b/src/modules/module-protocol-pulse/pulse-server.c
@@ -5518,7 +5518,7 @@ static int handle_memblock(struct client *client, struct message *msg)
 			SPA_MIN(msg->length, stream->attr.maxlength));
 	stream->write_index = index + msg->length;
 	spa_ringbuffer_write_update(&stream->ring, stream->write_index);
-	stream->requested -= msg->length;
+	stream->requested -= SPA_MIN(msg->length, stream->requested);
 finish:
 	message_free(impl, msg, false, false);
 	return res;