[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240506165518.474504-4-mic@digikod.net>
Date: Mon, 6 May 2024 18:55:11 +0200
From: Mickaël Salaün <mic@...ikod.net>
To: Christian Brauner <brauner@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jakub Kicinski <kuba@...nel.org>,
Kees Cook <keescook@...omium.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>,
Sean Christopherson <seanjc@...gle.com>,
Shengyu Li <shengyu.li.evgeny@...il.com>,
Shuah Khan <shuah@...nel.org>,
Shuah Khan <skhan@...uxfoundation.org>
Cc: Mickaël Salaün <mic@...ikod.net>,
Bagas Sanjaya <bagasdotme@...il.com>,
Brendan Higgins <brendanhiggins@...gle.com>,
David Gow <davidgow@...gle.com>,
"David S . Miller" <davem@...emloft.net>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Günther Noack <gnoack@...gle.com>,
Jon Hunter <jonathanh@...dia.com>,
Ron Economos <re@...z.net>,
Ronald Warsow <rwarsow@....de>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Will Drewry <wad@...omium.org>,
kernel test robot <oliver.sang@...el.com>,
kvm@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
netdev@...r.kernel.org,
stable@...r.kernel.org
Subject: [PATCH v6 03/10] selftests/harness: Fix fixture teardown
Make sure fixture teardowns are run when test cases failed, including
when _metadata->teardown_parent is set to true.
Make sure only one fixture teardown is run per test case, handling the
case where the test child forks.
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Shengyu Li <shengyu.li.evgeny@...il.com>
Cc: Shuah Khan <skhan@...uxfoundation.org>
Fixes: 72d7cb5c190b ("selftests/harness: Prevent infinite loop due to Assert in FIXTURE_TEARDOWN")
Fixes: 0710a1a73fb4 ("selftests/harness: Merge TEST_F_FORK() into TEST_F()")
Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Link: https://lore.kernel.org/r/20240506165518.474504-4-mic@digikod.net
---
tools/testing/selftests/kselftest_harness.h | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index d98702b6955d..55699a762c45 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -382,7 +382,10 @@
FIXTURE_DATA(fixture_name) self; \
pid_t child = 1; \
int status = 0; \
- bool jmp = false; \
+ /* Makes sure there is only one teardown, even when child forks again. */ \
+ bool *teardown = mmap(NULL, sizeof(*teardown), \
+ PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); \
+ *teardown = false; \
memset(&self, 0, sizeof(FIXTURE_DATA(fixture_name))); \
if (setjmp(_metadata->env) == 0) { \
/* Use the same _metadata. */ \
@@ -399,15 +402,16 @@
_metadata->exit_code = KSFT_FAIL; \
} \
} \
- else \
- jmp = true; \
if (child == 0) { \
- if (_metadata->setup_completed && !_metadata->teardown_parent && !jmp) \
+ if (_metadata->setup_completed && !_metadata->teardown_parent && \
+ __sync_bool_compare_and_swap(teardown, false, true)) \
fixture_name##_teardown(_metadata, &self, variant->data); \
_exit(0); \
} \
- if (_metadata->setup_completed && _metadata->teardown_parent) \
+ if (_metadata->setup_completed && _metadata->teardown_parent && \
+ __sync_bool_compare_and_swap(teardown, false, true)) \
fixture_name##_teardown(_metadata, &self, variant->data); \
+ munmap(teardown, sizeof(*teardown)); \
if (!WIFEXITED(status) && WIFSIGNALED(status)) \
/* Forward signal to __wait_for_test(). */ \
kill(getpid(), WTERMSIG(status)); \
--
2.45.0
Powered by blists - more mailing lists