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| author |   Hui Tang <tanghui20@huawei.com> | 2021-05-10 17:02:55 +0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2021-05-21 16:17:30 +0800 |
| commit | 0b0553b701f830d820ba9026e5799c24e400a4b5 (patch) | |
| tree | bb79515307a0813ffcb345594f2006eb5a4a2001 /drivers/crypto/hisilicon | |
| parent | crypto: hisilicon/hpre - extend 'cra_driver_name' with curve name (diff) | |
| download | linux-dev-0b0553b701f830d820ba9026e5799c24e400a4b5.tar.xz linux-dev-0b0553b701f830d820ba9026e5799c24e400a4b5.zip | |
crypto: hisilicon/hpre - fix unmapping invalid dma address
Currently, an invalid dma address may be unmapped when calling
'xx_data_clr_all' in error path, so check dma address of sqe in/out
if initialized before calling 'dma_free_coherent' or 'dma_unmap_single'.
Fixes: a9214b0b6ed2 ("crypto: hisilicon - fix the check on dma address")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/hisilicon')
| -rw-r--r-- | drivers/crypto/hisilicon/hpre/hpre_crypto.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c index c07a7f52d857..db00e9f763da 100644 --- a/drivers/crypto/hisilicon/hpre/hpre_crypto.c +++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c @@ -298,6 +298,8 @@ static void hpre_hw_data_clr_all(struct hpre_ctx *ctx, dma_addr_t tmp; tmp = le64_to_cpu(sqe->in); + if (unlikely(dma_mapping_error(dev, tmp))) + return; if (src) { if (req->src) @@ -307,6 +309,8 @@ static void hpre_hw_data_clr_all(struct hpre_ctx *ctx, } tmp = le64_to_cpu(sqe->out); + if (unlikely(dma_mapping_error(dev, tmp))) + return; if (req->dst) { if (dst) @@ -524,6 +528,8 @@ static int hpre_msg_request_set(struct hpre_ctx *ctx, void *req, bool is_rsa) msg->key = cpu_to_le64(ctx->dh.dma_xa_p); } + msg->in = cpu_to_le64(DMA_MAPPING_ERROR); + msg->out = cpu_to_le64(DMA_MAPPING_ERROR); msg->dw0 |= cpu_to_le32(0x1 << HPRE_SQE_DONE_SHIFT); msg->task_len1 = (ctx->key_sz >> HPRE_BITS_2_BYTES_SHIFT) - 1; h_req->ctx = ctx; @@ -1372,11 +1378,15 @@ static void hpre_ecdh_hw_data_clr_all(struct hpre_ctx *ctx, dma_addr_t dma; dma = le64_to_cpu(sqe->in); + if (unlikely(dma_mapping_error(dev, dma))) + return; if (src && req->src) dma_free_coherent(dev, ctx->key_sz << 2, req->src, dma); dma = le64_to_cpu(sqe->out); + if (unlikely(dma_mapping_error(dev, dma))) + return; if (req->dst) dma_free_coherent(dev, ctx->key_sz << 1, req->dst, dma); @@ -1431,6 +1441,8 @@ static int hpre_ecdh_msg_request_set(struct hpre_ctx *ctx, h_req->areq.ecdh = req; msg = &h_req->req; memset(msg, 0, sizeof(*msg)); + msg->in = cpu_to_le64(DMA_MAPPING_ERROR); + msg->out = cpu_to_le64(DMA_MAPPING_ERROR); msg->key = cpu_to_le64(ctx->ecdh.dma_p); msg->dw0 |= cpu_to_le32(0x1U << HPRE_SQE_DONE_SHIFT); @@ -1667,11 +1679,15 @@ static void hpre_curve25519_hw_data_clr_all(struct hpre_ctx *ctx, dma_addr_t dma; dma = le64_to_cpu(sqe->in); + if (unlikely(dma_mapping_error(dev, dma))) + return; if (src && req->src) dma_free_coherent(dev, ctx->key_sz, req->src, dma); dma = le64_to_cpu(sqe->out); + if (unlikely(dma_mapping_error(dev, dma))) + return; if (req->dst) dma_free_coherent(dev, ctx->key_sz, req->dst, dma); @@ -1722,6 +1738,8 @@ static int hpre_curve25519_msg_request_set(struct hpre_ctx *ctx, h_req->areq.curve25519 = req; msg = &h_req->req; memset(msg, 0, sizeof(*msg)); + msg->in = cpu_to_le64(DMA_MAPPING_ERROR); + msg->out = cpu_to_le64(DMA_MAPPING_ERROR); msg->key = cpu_to_le64(ctx->curve25519.dma_p); msg->dw0 |= cpu_to_le32(0x1U << HPRE_SQE_DONE_SHIFT); |