tree 1fb643e0ec624eb1e2145a6411407f8d27a4e4ce
parent 421d82f5b3e75f94e31875e37d45cdf6a557c120
author Herbert Xu <herbert@gondor.apana.org.au> 1417099092 +0800
committer Herbert Xu <herbert@gondor.apana.org.au> 1417188798 +0800

crypto: algif_skcipher - Fixed blocking recvmsg

As most (all?) users of algif_skcipher are single-threaded and
therefore always write before reading from an algif_skcipher
socket, they never block and exercise that code-path.

It turns out that code path doesn't even work because we never
reload ctx->used after waking up so we never even see the new
data and immediately return an error (and a loud WARN_ON).

This patch fixes this by always reloading ctx->used.

Reported-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Stephan Mueller <smueller@chronox.de>