From: Aram Sargsyan <aram@isc.org>
Date: Tue, 1 Jul 2025 10:49:39 +0000 (+0000)
Subject: Fix a possible hang in dig if a send is interrupted/canceled
X-Git-Tag: v9.21.11~53^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5d1a8fe7555e0facc4e86409b4adb0b663809ae5;p=thirdparty%2Fbind9.git

Fix a possible hang in dig if a send is interrupted/canceled

When send_done() is called with a ISC_R_CANCELED status (e.g. because
of a signal from ctrl+c), dig can fail to shutdown because
check_if_done() is not called in the branch. Add a check_if_done()
call.
---

diff --git a/bin/dig/dighost.c b/bin/dig/dighost.c
index c2e9b548861..2c4335c5123 100644
--- a/bin/dig/dighost.c
+++ b/bin/dig/dighost.c
@@ -2697,6 +2697,7 @@ send_done(isc_nmhandle_t *handle, isc_result_t eresult, void *arg) {
 		}
 		query_detach(&query);
 		lookup_detach(&l);
+		check_if_done();
 		return;
 	} else if (eresult != ISC_R_SUCCESS) {
 		debug("send failed: %s", isc_result_totext(eresult));