From: Ricardo B. Marlière <rbm@suse.com>
Date: Sat, 7 Mar 2026 22:07:56 +0000 (-0300)
Subject: ktest: Avoid undef warning when WARNINGS_FILE is unset
X-Git-Tag: v7.1-rc1~141^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=057854f8a595160656fe77ed7bf0d2403724b915;p=thirdparty%2Fkernel%2Flinux.git

ktest: Avoid undef warning when WARNINGS_FILE is unset

check_buildlog() probes $warnings_file with -f even when WARNINGS_FILE is
not configured. Perl warns about the uninitialized value and adds noise to
the test log, which can hide the output we actually care about.

Check that WARNINGS_FILE is defined before testing whether the file exists.

Cc: John Hawley <warthog9@eaglescrag.net>
Cc: Andrea Righi <arighi@nvidia.com>
Cc: Marcos Paulo de Souza <mpdesouza@suse.com>
Cc: Matthieu Baerts <matttbe@kernel.org>
Cc: Fernando Fernandez Mancera <fmancera@suse.de>
Cc: Pedro Falcato <pfalcato@suse.de>
Link: https://patch.msgid.link/20260307-ktest-fixes-v1-1-565d412f4925@suse.com
Fixes: 4283b169abfb ("ktest: Add make_warnings_file and process full warnings")
Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 001c4df9f7df6..f48ee64c69da5 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -2508,7 +2508,7 @@ sub check_buildlog {
     my $save_no_reboot = $no_reboot;
     $no_reboot = 1;
 
-    if (-f $warnings_file) {
+    if (defined($warnings_file) && -f $warnings_file) {
 	open(IN, $warnings_file) or
 	    dodie "Error opening $warnings_file";