tree 08d011303a23db659d64d25687b72b6d4dc106af
parent 6a364b2e47a6160b2c09a76bf9bfda5f7122a3e0
author raymond pang <raymondpangxd@gmail.com> 1553775565 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1556954421 +0200

libata: fix using DMA buffers on stack

[ Upstream commit dd08a8d9a66de4b54575c294a92630299f7e0fe7 ]

When CONFIG_VMAP_STACK=y, __pa() returns incorrect physical address for
a stack virtual address. Stack DMA buffers must be avoided.

Signed-off-by: raymond pang <raymondpangxd@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>