s390/test_unwind: add CALL_ON_STACK tests

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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>

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Vasily Gorbik 2019-11-22 18:22:06 +01:00

parent 4ac24c092b

commit 7868249fbb

1 changed files with 19 additions and 7 deletions

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arch/s390/lib/test_unwind.c

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