s390/unwind: fix get_stack_pointer(NULL, NULL)

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unwind_for_each_frame(NULL, NULL, 0) does not return any valid frames.

The reason is that get_stack_pointer, unlike get_stack_info and
show_stack, does not handle NULL argument.

Fix by making get_stack_pointer treat NULL as current, like
get_stack_info and show_stack do.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Tested-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Ilya Leoshkevich 2019-10-02 12:56:27 +02:00 • committed by Vasily Gorbik

parent d3baaeb5ae

commit ea3f6dcfa7

1 changed files with 1 additions and 1 deletions

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arch/s390/include/asm/stacktrace.h

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