6.1-stable review patch. If anyone has any objections, please let me know.
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From: Zhiqi Song songzhiqi1@huawei.com
[ Upstream commit 982fd1a74de63c388c060e4fa6f7fbd088d6d02e ]
Perform DMA unmapping operations before processing data. Otherwise, there may be unsynchronized data accessed by the CPU when the SWIOTLB is enabled.
Signed-off-by: Zhiqi Song songzhiqi1@huawei.com Signed-off-by: Chenghai Huang huangchenghai2@huawei.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/hisilicon/hpre/hpre_crypto.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c index ef02dadd6217..541f5eb76b6e 100644 --- a/drivers/crypto/hisilicon/hpre/hpre_crypto.c +++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c @@ -1461,11 +1461,13 @@ static void hpre_ecdh_cb(struct hpre_ctx *ctx, void *resp) if (overtime_thrhld && hpre_is_bd_timeout(req, overtime_thrhld)) atomic64_inc(&dfx[HPRE_OVER_THRHLD_CNT].value);
+ /* Do unmap before data processing */ + hpre_ecdh_hw_data_clr_all(ctx, req, areq->dst, areq->src); + p = sg_virt(areq->dst); memmove(p, p + ctx->key_sz - curve_sz, curve_sz); memmove(p + curve_sz, p + areq->dst_len - curve_sz, curve_sz);
- hpre_ecdh_hw_data_clr_all(ctx, req, areq->dst, areq->src); kpp_request_complete(areq, ret);
atomic64_inc(&dfx[HPRE_RECV_CNT].value); @@ -1769,9 +1771,11 @@ static void hpre_curve25519_cb(struct hpre_ctx *ctx, void *resp) if (overtime_thrhld && hpre_is_bd_timeout(req, overtime_thrhld)) atomic64_inc(&dfx[HPRE_OVER_THRHLD_CNT].value);
+ /* Do unmap before data processing */ + hpre_curve25519_hw_data_clr_all(ctx, req, areq->dst, areq->src); + hpre_key_to_big_end(sg_virt(areq->dst), CURVE25519_KEY_SIZE);
- hpre_curve25519_hw_data_clr_all(ctx, req, areq->dst, areq->src); kpp_request_complete(areq, ret);
atomic64_inc(&dfx[HPRE_RECV_CNT].value);