Commit Graph

7 Commits

Author SHA1 Message Date
Colin Ian King
7e914fd17e s390/test_unwind: fix spelling mistake "reqister" -> "register"
There is a spelling mistake in a pr_info message. Fix it.

Link: https://lkml.kernel.org/r/20191202090215.28766-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-12-11 19:53:23 +01:00
Vasily Gorbik
de6921ccbd s390/test_unwind: add program check context tests
Add unwinding from program check handler tests. Unwinder should be able
to unwind through pt_regs stored by program check handler on task stack.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:48 +01:00
Vasily Gorbik
e7409367ab s390/test_unwind: add irq context tests
Add unwinding from irq context tests. Unwinder should be able to unwind
through irq stack to task stack up to task pt_regs.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:48 +01:00
Vasily Gorbik
0610154650 s390/test_unwind: print verbose unwinding results
Add stack name, sp and reliable information into test unwinding
results. Also consider ip outside of kernel text as failure if the
state is reported reliable.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:48 +01:00
Vasily Gorbik
7868249fbb s390/test_unwind: add CALL_ON_STACK tests
Add CALL_ON_STACK helper testing. Tests make sure that we can unwind from
switched stack to original one up to task pt_regs (nodat -> task stack).

UWM_SWITCH_STACK could not be used together with UWM_THREAD because
get_stack_info explicitly restricts unwinding to task stack if
task != current.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:47 +01:00
Vasily Gorbik
f44fa79b10 s390/test_unwind: require that unwinding ended successfully
Currently unwinder test passes if unwinding results contain unwindme_func2
and unwindme_func1 functions.
Now that unwinder reports success upon reaching task pt_regs, check
that unwinding ended successfully in every test.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:46 +01:00
Ilya Leoshkevich
badbf39790 s390/unwind: add a test for the internal API
unwind_for_each_frame can take at least 8 different sets of parameters.
Add a test to make sure they all are handled in a sane way.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Co-developed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-30 10:52:46 +01:00