[GIT PULL] Kselftest fixes update for Linux 6.9-rc5

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Hi Linus,

Please pull the following kselftest fixes update for Linux 6.9-rc5.

This kselftest fixes update for Linux 6.9-rc5 consists of a fix to
kselftest harness to prevent infinite loop triggered in an assert
in FIXTURE_TEARDOWN and a fix to a problem seen in being able to stop
subsystem-enable tests when sched events are being traced.

diff is attached.

thanks,
-- Shuah


----------------------------------------------------------------
The following changes since commit 224fe424c356cb5c8f451eca4127f32099a6f764:

  selftests: dmabuf-heap: add config file for the test (2024-03-29 13:57:14 -0600)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-fixes-6.9-rc5

for you to fetch changes up to 72d7cb5c190befbb095bae7737e71560ec0fcaa6:

  selftests/harness: Prevent infinite loop due to Assert in FIXTURE_TEARDOWN (2024-04-04 10:50:53 -0600)

----------------------------------------------------------------
linux_kselftest-fixes-6.9-rc5

This kselftest fixes update for Linux 6.9-rc5 consists of a fix to
kselftest harness to prevent infinite loop triggered in an assert
in FIXTURE_TEARDOWN and a fix to a problem seen in being able to stop
subsystem-enable tests when sched events are being traced.

----------------------------------------------------------------
Shengyu Li (1):
      selftests/harness: Prevent infinite loop due to Assert in FIXTURE_TEARDOWN

Yuanhe Shu (1):
      selftests/ftrace: Limit length in subsystem-enable tests

 tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc | 6 +++---
 tools/testing/selftests/kselftest_harness.h                     | 5 ++++-
 2 files changed, 7 insertions(+), 4 deletions(-)

----------------------------------------------------------------


diff --git a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
index b1ede6249866..b7c8f29c09a9 100644
--- a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
+++ b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
@@ -18,7 +18,7 @@ echo 'sched:*' > set_event
 
 yield
 
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
 if [ $count -lt 3 ]; then
     fail "at least fork, exec and exit events should be recorded"
 fi
@@ -29,7 +29,7 @@ echo 1 > events/sched/enable
 
 yield
 
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
 if [ $count -lt 3 ]; then
     fail "at least fork, exec and exit events should be recorded"
 fi
@@ -40,7 +40,7 @@ echo 0 > events/sched/enable
 
 yield
 
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
 if [ $count -ne 0 ]; then
     fail "any of scheduler events should not be recorded"
 fi
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 4fd735e48ee7..230d62884885 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -383,6 +383,7 @@
 		FIXTURE_DATA(fixture_name) self; \
 		pid_t child = 1; \
 		int status = 0; \
+		bool jmp = false; \
 		memset(&self, 0, sizeof(FIXTURE_DATA(fixture_name))); \
 		if (setjmp(_metadata->env) == 0) { \
 			/* Use the same _metadata. */ \
@@ -399,8 +400,10 @@
 				_metadata->exit_code = KSFT_FAIL; \
 			} \
 		} \
+		else \
+			jmp = true; \
 		if (child == 0) { \
-			if (_metadata->setup_completed && !_metadata->teardown_parent) \
+			if (_metadata->setup_completed && !_metadata->teardown_parent && !jmp) \
 				fixture_name##_teardown(_metadata, &self, variant->data); \
 			_exit(0); \
 		} \

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