From 706393e2e920964a28e14b8a0e5ce1d89fd0aecf 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 267a367bd076e..717f5551fa83e 100644 --- a/drivers/crypto/ccp/ccp-ops.c +++ b/drivers/crypto/ccp/ccp-ops.c @@ -625,6 +625,7 @@ 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; @@ -663,9 +664,11 @@ 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; @@ -816,6 +819,13 @@ 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; -- 2.47.2