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libata: fix using DMA buffers on stack
authorraymond pang <raymondpangxd@gmail.com>
Thu, 28 Mar 2019 12:19:25 +0000 (12:19 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 4 May 2019 07:15:22 +0000 (09:15 +0200)
commit6a56dc1e2087e013446e69f5a4879575036eb995
tree4414977fd6ee44073da8ca9014009cefc9df79dbtree | snapshot (tar.gz zip)
parent790d908cbdeea0bd711ffb25ba03a522fcbcd195commit | diff
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>
drivers/ata/libata-zpodd.c diff | blob | blame | history