From 0dbd85ed9e76447917ec58b83a15c99258bebab0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Sat, 26 Dec 2020 01:35:17 +0100
Subject: [PATCH] =?UTF-8?q?terminal:=20reaper=20callback:=20don=E2=80=99t?=
 =?UTF-8?q?=20close=20ptmx=20if=20already=20closed?=
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---
 terminal.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/terminal.c b/terminal.c
index 78969e9e..ecb4e6cc 100644
--- a/terminal.c
+++ b/terminal.c
@@ -957,8 +957,11 @@ slave_died(struct reaper *reaper, pid_t pid, void *data)
     LOG_DBG("slave (PID=%u) died", pid);
 
     if (term->conf->hold_at_exit) {
-        fdm_del(term->fdm, term->ptmx);
-        term->ptmx = -1;
+        /* The PTMX FDM handler may already have closed our end */
+        if (term->ptmx >= 0) {
+            fdm_del(term->fdm, term->ptmx);
+            term->ptmx = -1;
+        }
         return true;
     }