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authorGilad Ben-Yossef <gilad@benyossef.com>2019-04-18 16:38:46 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-04-25 10:38:14 +0300
commita108f9311c01271bccad45d321cf9ddfac852c4b (patch)
tree61f1684502035612cc7e8e52bf3acb5bdcf2c933 /drivers
parentdcf6285d18ea147b3366de14121825be82a243f2 (diff)
downloadlinux-a108f9311c01271bccad45d321cf9ddfac852c4b.tar.xz
crypto: ccree - fix backlog notifications
We were doing backlog notification callbacks via a cipher/hash/aead request structure cast to the base structure, which may or may not work based on how the structure is laid in memory and is not safe. Fix it by delegating the backlog notification to the appropriate internal callbacks which are type aware. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/crypto/ccree/cc_aead.c4
-rw-r--r--drivers/crypto/ccree/cc_cipher.c10
-rw-r--r--drivers/crypto/ccree/cc_hash.c28
-rw-r--r--drivers/crypto/ccree/cc_request_mgr.c11
4 files changed, 39 insertions, 14 deletions
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index c5cde327cf1f..1fa3c7fef851 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -220,6 +220,10 @@ static void cc_aead_complete(struct device *dev, void *cc_req, int err)
struct crypto_aead *tfm = crypto_aead_reqtfm(cc_req);
struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ /* BACKLOG notification */
+ if (err == -EINPROGRESS)
+ goto done;
+
cc_unmap_aead_request(dev, areq);
/* Restore ordinary iv pointer */
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index 15da3a35a6a1..1ba7c8a7bd52 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -818,9 +818,13 @@ static void cc_cipher_complete(struct device *dev, void *cc_req, int err)
struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req);
unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm);
- cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
- memcpy(req->iv, req_ctx->iv, ivsize);
- kzfree(req_ctx->iv);
+ if (err != -EINPROGRESS) {
+ /* Not a BACKLOG notification */
+ cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
+ memcpy(req->iv, req_ctx->iv, ivsize);
+ kzfree(req_ctx->iv);
+ }
+
skcipher_request_complete(req, err);
}
diff --git a/drivers/crypto/ccree/cc_hash.c b/drivers/crypto/ccree/cc_hash.c
index 2c4ddc8fb76b..e824ab60b59c 100644
--- a/drivers/crypto/ccree/cc_hash.c
+++ b/drivers/crypto/ccree/cc_hash.c
@@ -280,8 +280,12 @@ static void cc_update_complete(struct device *dev, void *cc_req, int err)
dev_dbg(dev, "req=%pK\n", req);
- cc_unmap_hash_request(dev, state, req->src, false);
- cc_unmap_req(dev, state, ctx);
+ if (err != -EINPROGRESS) {
+ /* Not a BACKLOG notification */
+ cc_unmap_hash_request(dev, state, req->src, false);
+ cc_unmap_req(dev, state, ctx);
+ }
+
req->base.complete(&req->base, err);
}
@@ -295,9 +299,13 @@ static void cc_digest_complete(struct device *dev, void *cc_req, int err)
dev_dbg(dev, "req=%pK\n", req);
- cc_unmap_hash_request(dev, state, req->src, false);
- cc_unmap_result(dev, state, digestsize, req->result);
- cc_unmap_req(dev, state, ctx);
+ if (err != -EINPROGRESS) {
+ /* Not a BACKLOG notification */
+ cc_unmap_hash_request(dev, state, req->src, false);
+ cc_unmap_result(dev, state, digestsize, req->result);
+ cc_unmap_req(dev, state, ctx);
+ }
+
req->base.complete(&req->base, err);
}
@@ -311,9 +319,13 @@ static void cc_hash_complete(struct device *dev, void *cc_req, int err)
dev_dbg(dev, "req=%pK\n", req);
- cc_unmap_hash_request(dev, state, req->src, false);
- cc_unmap_result(dev, state, digestsize, req->result);
- cc_unmap_req(dev, state, ctx);
+ if (err != -EINPROGRESS) {
+ /* Not a BACKLOG notification */
+ cc_unmap_hash_request(dev, state, req->src, false);
+ cc_unmap_result(dev, state, digestsize, req->result);
+ cc_unmap_req(dev, state, ctx);
+ }
+
req->base.complete(&req->base, err);
}
diff --git a/drivers/crypto/ccree/cc_request_mgr.c b/drivers/crypto/ccree/cc_request_mgr.c
index 88c97a580dd8..c2e8190bb067 100644
--- a/drivers/crypto/ccree/cc_request_mgr.c
+++ b/drivers/crypto/ccree/cc_request_mgr.c
@@ -364,10 +364,12 @@ static void cc_enqueue_backlog(struct cc_drvdata *drvdata,
struct cc_bl_item *bli)
{
struct cc_req_mgr_handle *mgr = drvdata->request_mgr_handle;
+ struct device *dev = drvdata_to_dev(drvdata);
spin_lock_bh(&mgr->bl_lock);
list_add_tail(&bli->list, &mgr->backlog);
++mgr->bl_len;
+ dev_dbg(dev, "+++bl len: %d\n", mgr->bl_len);
spin_unlock_bh(&mgr->bl_lock);
tasklet_schedule(&mgr->comptask);
}
@@ -377,7 +379,7 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
struct cc_req_mgr_handle *mgr = drvdata->request_mgr_handle;
struct cc_bl_item *bli;
struct cc_crypto_req *creq;
- struct crypto_async_request *req;
+ void *req;
bool ivgen;
unsigned int total_len;
struct device *dev = drvdata_to_dev(drvdata);
@@ -387,17 +389,20 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
while (mgr->bl_len) {
bli = list_first_entry(&mgr->backlog, struct cc_bl_item, list);
+ dev_dbg(dev, "---bl len: %d\n", mgr->bl_len);
+
spin_unlock(&mgr->bl_lock);
+
creq = &bli->creq;
- req = (struct crypto_async_request *)creq->user_arg;
+ req = creq->user_arg;
/*
* Notify the request we're moving out of the backlog
* but only if we haven't done so already.
*/
if (!bli->notif) {
- req->complete(req, -EINPROGRESS);
+ creq->user_cb(dev, req, -EINPROGRESS);
bli->notif = true;
}