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ktest.pl: Check kernelrelease return in get_version

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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: 5f9b6ced04 ("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>
This commit is contained in:
Ricardo B. Marliere 2024-12-05 17:50:35 -03:00 committed by Greg Kroah-Hartman
parent df948b5ba6
commit 2d0ce53755
1 changed files with 5 additions and 0 deletions
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5
tools/testing/ktest/ktest.pl
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@ -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;