linux-kernel - [PATCH AUTOSEL 5.13 37/46] crypto: tcrypt

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Date:   Sun,  5 Sep 2021 21:20:42 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>,
        Vitaly Chikunov <vt@...linux.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>, linux-crypto@...r.kernel.org
Subject: [PATCH AUTOSEL 5.13 37/46] crypto: tcrypt - Fix missing return value check

From: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>

[ Upstream commit 7b3d52683b3a47c0ba1dfd6b5994a3a795b06972 ]

There are several places where the return value check of crypto_aead_setkey
and crypto_aead_setauthsize were lost. It is necessary to add these checks.

At the same time, move the crypto_aead_setauthsize() call out of the loop,
and only need to call it once after load transform.

Fixee: 53f52d7aecb4 ("crypto: tcrypt - Added speed tests for AEAD crypto alogrithms in tcrypt test suite")
Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Reviewed-by: Vitaly Chikunov <vt@...linux.org>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 crypto/tcrypt.c | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 6b7c158dc508..f9c00875bc0e 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -290,6 +290,11 @@ static void test_mb_aead_speed(const char *algo, int enc, int secs,
 	}
 
 	ret = crypto_aead_setauthsize(tfm, authsize);
+	if (ret) {
+		pr_err("alg: aead: Failed to setauthsize for %s: %d\n", algo,
+		       ret);
+		goto out_free_tfm;
+	}
 
 	for (i = 0; i < num_mb; ++i)
 		if (testmgr_alloc_buf(data[i].xbuf)) {
@@ -315,7 +320,7 @@ static void test_mb_aead_speed(const char *algo, int enc, int secs,
 	for (i = 0; i < num_mb; ++i) {
 		data[i].req = aead_request_alloc(tfm, GFP_KERNEL);
 		if (!data[i].req) {
-			pr_err("alg: skcipher: Failed to allocate request for %s\n",
+			pr_err("alg: aead: Failed to allocate request for %s\n",
 			       algo);
 			while (i--)
 				aead_request_free(data[i].req);
@@ -567,13 +572,19 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 	sgout = &sg[9];
 
 	tfm = crypto_alloc_aead(algo, 0, 0);
-
 	if (IS_ERR(tfm)) {
 		pr_err("alg: aead: Failed to load transform for %s: %ld\n", algo,
 		       PTR_ERR(tfm));
 		goto out_notfm;
 	}
 
+	ret = crypto_aead_setauthsize(tfm, authsize);
+	if (ret) {
+		pr_err("alg: aead: Failed to setauthsize for %s: %d\n", algo,
+		       ret);
+		goto out_noreq;
+	}
+
 	crypto_init_wait(&wait);
 	printk(KERN_INFO "\ntesting speed of %s (%s) %s\n", algo,
 			get_driver_name(crypto_aead, tfm), e);
@@ -611,8 +622,13 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 					break;
 				}
 			}
+
 			ret = crypto_aead_setkey(tfm, key, *keysize);
-			ret = crypto_aead_setauthsize(tfm, authsize);
+			if (ret) {
+				pr_err("setkey() failed flags=%x: %d\n",
+					crypto_aead_get_flags(tfm), ret);
+				goto out;
+			}
 
 			iv_len = crypto_aead_ivsize(tfm);
 			if (iv_len)
@@ -622,15 +638,8 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 			printk(KERN_INFO "test %u (%d bit key, %d byte blocks): ",
 					i, *keysize * 8, bs);
 
-
 			memset(tvmem[0], 0xff, PAGE_SIZE);
 
-			if (ret) {
-				pr_err("setkey() failed flags=%x\n",
-						crypto_aead_get_flags(tfm));
-				goto out;
-			}
-
 			sg_init_aead(sg, xbuf, bs + (enc ? 0 : authsize),
 				     assoc, aad_size);
 
-- 
2.30.2