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82ad6bcade
KMap the buffers before copying trailing bytes during hmac into a session temporary buffer. This is required if pinned buffer from user-space is send during hmac and is safe even if hmac request is generated from within kernel. Signed-off-by: Yashpal Dutta <yashpal.dutta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>