From 2c6621ca035118c61acee16abe1fea1d7533533c Mon Sep 17 00:00:00 2001
From: "Ricardo B. Marliere" <rbm@suse.com>
Date: Thu, 5 Dec 2024 17:50:35 -0300
Subject: [PATCH] ktest.pl: Check kernelrelease return in get_version
commit a4e17a8f239a545c463f8ec27db4ed6e74b31841 upstream.
In the case of a test that uses the special option ${KERNEL_VERSION} in one
of its settings but has no configuration available in ${OUTPUT_DIR}, for
example if it's a new empty directory, then the `make kernelrelease` call
will fail and the subroutine will chomp an empty string, silently. Fix that
by adding an empty configuration and retrying.
Cc: stable@vger.kernel.org
Cc: John Hawley <warthog9@eaglescrag.net>
Fixes: 5f9b6ced04a4e ("ktest: Bisecting, install modules, add logging")
Link: https://lore.kernel.org/20241205-ktest_kver_fallback-v2-1-869dae4c7777@suse.com
Signed-off-by: Ricardo B. Marliere <rbm@suse.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/ktest/ktest.pl | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index f7f371a91ed97..aecea16cbd02f 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -2399,6 +2399,11 @@ sub get_version {
return if ($have_version);
doprint "$make kernelrelease ... ";
$version = `$make -s kernelrelease | tail -1`;
+ if (!length($version)) {
+ run_command "$make allnoconfig" or return 0;
+ doprint "$make kernelrelease ... ";
+ $version = `$make -s kernelrelease | tail -1`;
+ }
chomp($version);
doprint "$version\n";
$have_version = 1;
--
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