tree 84dd3c27977ac3e79d2d4d22098a12dfce490d06
parent 11231ebf2ade83c40923e34d282d29f63157839d
author Herbert Xu <herbert@gondor.apana.org.au> 1446369079 +0800
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074917 +0200

crypto: algif_hash - Only export and import on sockets with data

commit 4afa5f9617927453ac04b24b584f6c718dfb4f45 upstream.

The hash_accept call fails to work on sockets that have not received
any data.  For some algorithm implementations it may cause crashes.

This patch fixes this by ensuring that we only export and import on
sockets that have received data.

Reported-by: Harsh Jain <harshjain.prof@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Zefan Li <lizefan@huawei.com>