From 2d278988442d3f4ac43cd0eb441fc92aa570dc05 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Thu, 23 May 2019 14:18:29 +0200
Subject: dmesg: make strtok() use more robust

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 sys-utils/dmesg.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sys-utils/dmesg.c')

diff --git a/sys-utils/dmesg.c b/sys-utils/dmesg.c
index f96e5bdf7..f0b9b7137 100644
--- a/sys-utils/dmesg.c
+++ b/sys-utils/dmesg.c
@@ -1017,6 +1017,8 @@ full_output:
 		if (!line) {
 			mesg_copy = xstrdup(rec->mesg);
 			line = strtok(mesg_copy, "\n");
+			if (!line)
+				goto done;	/* only when something is wrong */
 			mesg_size = strlen(line);
 		}
 	} else {
@@ -1057,6 +1059,7 @@ full_output:
 		free(mesg_copy);
 	}
 
+done:
 	putchar('\n');
 }
 
-- 
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