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(parent: 27c7003) | patch
dm integrity: don't store cipher request on the stack
authorMikulas Patocka <mpatocka@redhat.com>
Wed, 10 Jan 2018 14:32:47 +0000 (09:32 -0500)
committerMike Snitzer <snitzer@redhat.com>
Wed, 17 Jan 2018 14:08:57 +0000 (09:08 -0500)
commit717f4b1c52135f279112df82583e0c77e80f90de
treecac65d1d4f60325acad7923a218f051dec9e3bb6tree | snapshot
parent27c7003697fc2c78f965984aa224ef26cd6b2949commit | diff
dm integrity: don't store cipher request on the stack

Some asynchronous cipher implementations may use DMA.  The stack may
be mapped in the vmalloc area that doesn't support DMA.  Therefore,
the cipher request and initialization vector shouldn't be on the
stack.

Fix this by allocating the request and iv with kmalloc.

Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-integrity.c diff | blob | history
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