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(parent: f825093) | 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 06:10:15 +0000 (07:10 +0100)
commitd483d0c1a21ecd138a9c57d709349ae7bc7f2c54
treefa4cb7bdad7e2bccf910a6d5facd4d47e229ada7tree
parentf8250934cf1c5289aa81bcbcfe110097471f804bcommit | 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 | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git