diff mbox series

[2/2] crypto: qat - unmap buffers before free for RSA

Message ID 20230601101000.18293-3-giovanni.cabiddu@intel.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show
Series crypto: qat - unmap buffers before free | expand

Commit Message

Giovanni Cabiddu June 1, 2023, 10:10 a.m. UTC 
From: Hareshx Sankar Raj <hareshx.sankar.raj@intel.com>

The callback function for RSA frees the memory allocated for the source
and destination buffers before unmapping them.
This sequence is wrong.

Change the cleanup sequence to unmap the buffers before freeing them.

Fixes: 3dfaf0071ed7 ("crypto: qat - remove dma_free_coherent() for RSA")
Signed-off-by: Hareshx Sankar Raj <hareshx.sankar.raj@intel.com>
Co-developed-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Signed-off-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
 drivers/crypto/intel/qat/qat_common/qat_asym_algs.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/crypto/intel/qat/qat_common/qat_asym_algs.c b/drivers/crypto/intel/qat/qat_common/qat_asym_algs.c
index 8806242469a0..4128200a9032 100644
--- a/drivers/crypto/intel/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/intel/qat/qat_common/qat_asym_algs.c
@@ -520,12 +520,14 @@  static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp)
 
 	err = (err == ICP_QAT_FW_COMN_STATUS_FLAG_OK) ? 0 : -EINVAL;
 
-	kfree_sensitive(req->src_align);
-
 	dma_unmap_single(dev, req->in.rsa.enc.m, req->ctx.rsa->key_sz,
 			 DMA_TO_DEVICE);
 
+	kfree_sensitive(req->src_align);
+
 	areq->dst_len = req->ctx.rsa->key_sz;
+	dma_unmap_single(dev, req->out.rsa.enc.c, req->ctx.rsa->key_sz,
+			 DMA_FROM_DEVICE);
 	if (req->dst_align) {
 		scatterwalk_map_and_copy(req->dst_align, areq->dst, 0,
 					 areq->dst_len, 1);
@@ -533,9 +535,6 @@  static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp)
 		kfree_sensitive(req->dst_align);
 	}
 
-	dma_unmap_single(dev, req->out.rsa.enc.c, req->ctx.rsa->key_sz,
-			 DMA_FROM_DEVICE);
-
 	dma_unmap_single(dev, req->phy_in, sizeof(struct qat_rsa_input_params),
 			 DMA_TO_DEVICE);
 	dma_unmap_single(dev, req->phy_out,