[PATCH v3] kunit: Fix kunit.py run --build_dir='<foo>' fails on "unclean" trees

From: Vitor Massaru Iha
Date: Mon Apr 06 2020 - 18:15:19 EST


Fix this bug: https://bugzilla.kernel.org/show_bug.cgi?id=205219

For some reason, the environment variable ARCH is used instead of ARCH
passed as an argument, this patch uses a copy of the env, but using
ARCH=um and CROSS_COMPILER='' to avoid this problem.

This patch doesn't change the user's environment variables, avoiding
side effects.

Signed-off-by: Vitor Massaru Iha <vitor@xxxxxxxxxxx>
---
v2:
- Use the correct next branch

v3:
- Use torvalds/master branch
- Use base parameter on git send-email
---
tools/testing/kunit/kunit_kernel.py | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index 63dbda2d029f..96216c699fde 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -20,6 +20,7 @@ import kunit_parser
KCONFIG_PATH = '.config'
kunitconfig_path = '.kunitconfig'
BROKEN_ALLCONFIG_PATH = 'tools/testing/kunit/configs/broken_on_uml.config'
+env = dict(os.environ.copy(), ARCH='um', CROSS_COMPILE='')

class ConfigError(Exception):
"""Represents an error trying to configure the Linux kernel."""
@@ -41,13 +42,15 @@ class LinuxSourceTreeOperations(object):
raise ConfigError(e.output)

def make_olddefconfig(self, build_dir, make_options):
- command = ['make', 'ARCH=um', 'olddefconfig']
+ command = ['make', 'olddefconfig']
if make_options:
command.extend(make_options)
if build_dir:
command += ['O=' + build_dir]
try:
- subprocess.check_output(command, stderr=subprocess.PIPE)
+ subprocess.check_output(command,
+ stderr=subprocess.PIPE,
+ env=env)
except OSError as e:
raise ConfigError('Could not call make command: ' + e)
except subprocess.CalledProcessError as e:
@@ -57,9 +60,10 @@ class LinuxSourceTreeOperations(object):
kunit_parser.print_with_timestamp(
'Enabling all CONFIGs for UML...')
process = subprocess.Popen(
- ['make', 'ARCH=um', 'allyesconfig'],
+ ['make', 'allyesconfig'],
stdout=subprocess.DEVNULL,
- stderr=subprocess.STDOUT)
+ stderr=subprocess.STDOUT,
+ env=env)
process.wait()
kunit_parser.print_with_timestamp(
'Disabling broken configs to run KUnit tests...')
@@ -71,13 +75,13 @@ class LinuxSourceTreeOperations(object):
'Starting Kernel with all configs takes a few minutes...')

def make(self, jobs, build_dir, make_options):
- command = ['make', 'ARCH=um', '--jobs=' + str(jobs)]
+ command = ['make', '--jobs=' + str(jobs)]
if make_options:
command.extend(make_options)
if build_dir:
command += ['O=' + build_dir]
try:
- subprocess.check_output(command)
+ subprocess.check_output(command, env=env)
except OSError as e:
raise BuildError('Could not call execute make: ' + e)
except subprocess.CalledProcessError as e:
@@ -91,7 +95,8 @@ class LinuxSourceTreeOperations(object):
with open(outfile, 'w') as output:
process = subprocess.Popen([linux_bin] + params,
stdout=output,
- stderr=subprocess.STDOUT)
+ stderr=subprocess.STDOUT,
+ env=env)
process.wait(timeout)


--
2.25.1