From 4c47ce139e11613c5428cf86e88447ffdf6785b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Thu, 28 Dec 2017 17:03:50 +0100
Subject: [PATCH] qrexec: fix infinite loop when multiple services are waiting
 for GUI

Reported by @ctrlaltdel
Fixes QubesOS/qubes-issues#3433
---
 qrexec/qrexec-agent.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/qrexec/qrexec-agent.c b/qrexec/qrexec-agent.c
index 2148f2a..15e43e2 100644
--- a/qrexec/qrexec-agent.c
+++ b/qrexec/qrexec-agent.c
@@ -624,8 +624,8 @@ void handle_server_exec_request_init(struct msg_header *hdr)
 
     if (hdr->type != MSG_SERVICE_CONNECT && wait_for_session_maybe(buf)) {
         /* waiting for session, postpone actual call */
-        int slot_index = 0;
-        while (slot_index < MAX_FDS)
+        int slot_index;
+        for (slot_index = 0; slot_index < MAX_FDS; slot_index++)
             if (!requests_waiting_for_session[slot_index].cmdline)
                 break;
         if (slot_index == MAX_FDS) {