From eba522cd0cf1185599f85d69a93836ade02baf2b Mon Sep 17 00:00:00 2001 From: "Hook, Gary" Date: Wed, 10 Jul 2019 00:09:22 +0000 Subject: [PATCH] crypto: ccp - memset structure fields to zero before reuse commit 20e833dc36355ed642d00067641a679c618303fa upstream. The AES GCM function reuses an 'op' data structure, which members contain values that must be cleared for each (re)use. This fix resolves a crypto self-test failure: alg: aead: gcm-aes-ccp encryption test failed (wrong result) on test vector 2, cfg="two even aligned splits" Fixes: 36cf515b9bbe ("crypto: ccp - Enable support for AES GCM on v5 CCPs") Cc: Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/ccp/ccp-ops.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c index 406b95329b3d2..7a4161e179cd5 100644 --- a/drivers/crypto/ccp/ccp-ops.c +++ b/drivers/crypto/ccp/ccp-ops.c @@ -612,6 +612,7 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, unsigned long long *final; unsigned int dm_offset; + unsigned int jobid; unsigned int ilen; bool in_place = true; /* Default value */ int ret; @@ -650,9 +651,11 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, p_tag = scatterwalk_ffwd(sg_tag, p_inp, ilen); } + jobid = CCP_NEW_JOBID(cmd_q->ccp); + memset(&op, 0, sizeof(op)); op.cmd_q = cmd_q; - op.jobid = CCP_NEW_JOBID(cmd_q->ccp); + op.jobid = jobid; op.sb_key = cmd_q->sb_key; /* Pre-allocated */ op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ op.init = 1; @@ -797,6 +800,13 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, final[0] = cpu_to_be64(aes->aad_len * 8); final[1] = cpu_to_be64(ilen * 8); + memset(&op, 0, sizeof(op)); + op.cmd_q = cmd_q; + op.jobid = jobid; + op.sb_key = cmd_q->sb_key; /* Pre-allocated */ + op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ + op.init = 1; + op.u.aes.type = aes->type; op.u.aes.mode = CCP_AES_MODE_GHASH; op.u.aes.action = CCP_AES_GHASHFINAL; op.src.type = CCP_MEMTYPE_SYSTEM; -- 2.50.1