From: Todd C. Miller <Todd.Miller@sudo.ws>
Date: Thu, 22 Feb 2018 21:27:37 +0000 (-0700)
Subject: In device_handle_read() we need to reset the read event on error or
X-Git-Tag: release-1.1pre16~19
X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=03a94cb3148544230bdd306e905d2ce88c551c12

In device_handle_read() we need to reset the read event on error or
it will keep firing.  This is easy to reproduce by suspending the
machine while tinc is running.
---

diff --git a/src/mingw/device.c b/src/mingw/device.c
index 2cce1f2b..54e09942 100644
--- a/src/mingw/device.c
+++ b/src/mingw/device.c
@@ -76,6 +76,12 @@ static void device_handle_read(void *data, int flags) {
 	if(!GetOverlappedResult(device_handle, &device_read_overlapped, &len, FALSE)) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Error getting read result from %s %s: %s", device_info,
 		       device, strerror(errno));
+
+		if(GetLastError() != ERROR_IO_INCOMPLETE) {
+			/* Must reset event or it will keep firing. */
+			ResetEvent(device_read_overlapped.hEvent);
+		}
+
 		return;
 	}