From: Eric Biggers <ebiggers@xxxxxxxxxx>
Check that algorithms do not change the skcipher_request structure, as
users may rely on submitting the request again (e.g. after copying new
data into the same source buffer) without reinitializing everything.
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
crypto/testmgr.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index fa971b83d3d2..e5f06844c793 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1536,6 +1536,47 @@ static int test_skcipher_vec_cfg(const char *driver, int enc,
return err;
}
+ /* Check that the algorithm didn't overwrite things it shouldn't have */
+ if (req->cryptlen != vec->len ||
+ req->iv != iv ||
+ req->src != tsgls->src.sgl_ptr ||
+ req->dst != tsgls->dst.sgl_ptr ||
+ crypto_skcipher_reqtfm(req) != tfm ||
+ req->base.complete != crypto_req_done ||
+ req->base.flags != req_flags ||
+ req->base.data != &wait) {
+ pr_err("alg: skcipher: %s %s corrupted request struct on test vector %u, cfg=\"%s\"\n",
+ driver, op, vec_num, cfg->name);
+ if (req->cryptlen != vec->len)
+ pr_err("alg: skcipher: changed 'req->cryptlen'\n");
+ if (req->iv != iv)
+ pr_err("alg: skcipher: changed 'req->iv'\n");
+ if (req->src != tsgls->src.sgl_ptr)
+ pr_err("alg: skcipher: changed 'req->src'\n");
+ if (req->dst != tsgls->dst.sgl_ptr)
+ pr_err("alg: skcipher: changed 'req->dst'\n");
+ if (crypto_skcipher_reqtfm(req) != tfm)
+ pr_err("alg: skcipher: changed 'req->base.tfm'\n");
+ if (req->base.complete != crypto_req_done)
+ pr_err("alg: skcipher: changed 'req->base.complete'\n");
+ if (req->base.flags != req_flags)
+ pr_err("alg: skcipher: changed 'req->base.flags'\n");
+ if (req->base.data != &wait)
+ pr_err("alg: skcipher: changed 'req->base.data'\n");
+ return -EINVAL;
+ }
+ if (is_test_sglist_corrupted(&tsgls->src)) {
+ pr_err("alg: skcipher: %s %s corrupted src sgl on test vector %u, cfg=\"%s\"\n",
+ driver, op, vec_num, cfg->name);
+ return -EINVAL;
+ }
+ if (tsgls->dst.sgl_ptr != tsgls->src.sgl &&
+ is_test_sglist_corrupted(&tsgls->dst)) {
+ pr_err("alg: skcipher: %s %s corrupted dst sgl on test vector %u, cfg=\"%s\"\n",
+ driver, op, vec_num, cfg->name);
+ return -EINVAL;
+ }
+
/* Check for the correct output (ciphertext or plaintext) */
err = verify_correct_output(&tsgls->dst, enc ? vec->ctext : vec->ptext,
vec->len, 0, true);
--
2.20.1.321.g9e740568ce-goog
