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(parent: f5e66cd) | patch
xtensa: fix get_wchan
authorMax Filippov <jcmvbkbc@gmail.com>
Wed, 2 Jan 2019 09:08:32 +0000 (01:08 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 10 Mar 2019 06:17:21 +0000 (07:17 +0100)
commitc426de69ded0d41c7fe56302597c4d5bf9c734fc
tree3489b7afa55a7aa04056768b13f3391ff6957885tree | snapshot
parentf5e66cdb51fd352d7091cb2516b24734e524cb33commit | diff
xtensa: fix get_wchan

commit d90b88fd3653f1fb66ecc6571b860d5a5749fa56 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/xtensa/kernel/process.c diff | blob | history
Domain: System / Kernel;