From: Russell King - ARM Linux <linux@armlinux.org.uk>
Subject: AF_ALG broken?
Date: Mon, 8 Aug 2016 17:44:27 +0100
Message-ID: <20160808164427.GB1041@n2100.armlinux.org.uk>
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To: Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	linux-crypto@vger.kernel.org
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Sender: linux-crypto-owner@vger.kernel.org

Hi,

When trying to use the openssl AF_ALG module with 4.8-rc1 with imx
caam, I get this:

$ OPENSSL_CONF=/shared/crypto/openssl-imx.cnf strace openssl dgst -md5 </bin/bash
...
socket(PF_ALG, SOCK_SEQPACKET, 0)       = 3
close(3)                                = 0
socket(PF_ALG, SOCK_SEQPACKET, 0)       = 3
bind(3, {sa_family=AF_ALG, sa_data="hash\0\0\0\0\0\0\0\0\0\0"}, 88) = 0
accept(3, 0, NULL)                      = 4
fstat64(0, {st_mode=S_IFREG|0755, st_size=666864, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6fab000
read(0, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\2\0(\0\1\0\0\0\21'\2\0004\0\0\0"..., 8192) = 8192
send(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\2\0(\0\1\0\0\0\21'\2\0004\0\0\0"..., 8192, MSG_MORE) = -1 ENOKEY (Required key not available)

This used to work, so something in the kernel AF_ALG API has changed
which has broken userspace.  Any ideas what's up, or where to look?

Thanks.

-- 
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