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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>
Thu, 16 May 2019 07:17:16 +0000 (09:17 +0200)
commitc2e5f31ccbf23d3b12545cc3df137a549e3d1bbb
tree38f7ea8f85e2f37dcd20126c990aca1f3a132bc0tree
parentef269561a9def028bca22a382004af91b1308b0fcommit | 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
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git