tree 97ff4ed6e1be83b1334ea8624d81306537b7aef7
parent 579afe866f52adcd921272a224ab36733051059c
author Max Filippov <jcmvbkbc@gmail.com> 1546420112 -0800
committer Max Filippov <jcmvbkbc@gmail.com> 1549571642 -0800

xtensa: fix get_wchan

Stack unwinding is implemented incorrectly in xtensa get_wchan: instead
of extracting a0 and a1 registers from the spill location under the
stack pointer it extracts a word pointed to by the stack pointer and
subtracts 4 or 3 from it.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>