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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yunfeng Ye <yeyunfeng@huawei.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Sasha Levin <sashal@kernel.org>,
	linux-crypto@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 559/671] crypto: hisilicon - Matching the dma address for dma_pool_free()
Date: Thu, 16 Jan 2020 12:03:17 -0500
Message-ID: <20200116170509.12787-296-sashal@kernel.org> (raw)
In-Reply-To: <20200116170509.12787-1-sashal@kernel.org>

From: Yunfeng Ye <yeyunfeng@huawei.com>

[ Upstream commit e00371af1d4ce73d527d8ee69fda2febaf5a42c2 ]

When dma_pool_zalloc() fail in sec_alloc_and_fill_hw_sgl(),
dma_pool_free() is invoked, but the parameters that sgl_current and
sgl_current->next_sgl is not match.

Using sec_free_hw_sgl() instead of the original free routine.

Fixes: 915e4e8413da ("crypto: hisilicon - SEC security accelerator driver")
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/hisilicon/sec/sec_algs.c | 44 +++++++++++--------------
 1 file changed, 19 insertions(+), 25 deletions(-)

diff --git a/drivers/crypto/hisilicon/sec/sec_algs.c b/drivers/crypto/hisilicon/sec/sec_algs.c
index db2983c51f1e..bf9658800bda 100644
--- a/drivers/crypto/hisilicon/sec/sec_algs.c
+++ b/drivers/crypto/hisilicon/sec/sec_algs.c
@@ -153,6 +153,24 @@ static void sec_alg_skcipher_init_context(struct crypto_skcipher *atfm,
 				       ctx->cipher_alg);
 }
 
+static void sec_free_hw_sgl(struct sec_hw_sgl *hw_sgl,
+			    dma_addr_t psec_sgl, struct sec_dev_info *info)
+{
+	struct sec_hw_sgl *sgl_current, *sgl_next;
+	dma_addr_t sgl_next_dma;
+
+	sgl_current = hw_sgl;
+	while (sgl_current) {
+		sgl_next = sgl_current->next;
+		sgl_next_dma = sgl_current->next_sgl;
+
+		dma_pool_free(info->hw_sgl_pool, sgl_current, psec_sgl);
+
+		sgl_current = sgl_next;
+		psec_sgl = sgl_next_dma;
+	}
+}
+
 static int sec_alloc_and_fill_hw_sgl(struct sec_hw_sgl **sec_sgl,
 				     dma_addr_t *psec_sgl,
 				     struct scatterlist *sgl,
@@ -199,36 +217,12 @@ static int sec_alloc_and_fill_hw_sgl(struct sec_hw_sgl **sec_sgl,
 	return 0;
 
 err_free_hw_sgls:
-	sgl_current = *sec_sgl;
-	while (sgl_current) {
-		sgl_next = sgl_current->next;
-		dma_pool_free(info->hw_sgl_pool, sgl_current,
-			      sgl_current->next_sgl);
-		sgl_current = sgl_next;
-	}
+	sec_free_hw_sgl(*sec_sgl, *psec_sgl, info);
 	*psec_sgl = 0;
 
 	return ret;
 }
 
-static void sec_free_hw_sgl(struct sec_hw_sgl *hw_sgl,
-			    dma_addr_t psec_sgl, struct sec_dev_info *info)
-{
-	struct sec_hw_sgl *sgl_current, *sgl_next;
-	dma_addr_t sgl_next_dma;
-
-	sgl_current = hw_sgl;
-	while (sgl_current) {
-		sgl_next = sgl_current->next;
-		sgl_next_dma = sgl_current->next_sgl;
-
-		dma_pool_free(info->hw_sgl_pool, sgl_current, psec_sgl);
-
-		sgl_current = sgl_next;
-		psec_sgl = sgl_next_dma;
-	}
-}
-
 static int sec_alg_skcipher_setkey(struct crypto_skcipher *tfm,
 				   const u8 *key, unsigned int keylen,
 				   enum sec_cipher_alg alg)
-- 
2.20.1


  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116170509.12787-1-sashal@kernel.org>
2020-01-16 16:59 ` [PATCH AUTOSEL 4.19 348/671] crypto: caam - fix caam_dump_sg that iterates through scatterlist Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 371/671] crypto: ccp - fix AES CFB error exposed by new test vectors Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 372/671] crypto: ccp - Fix 3DES complaint from ccp-crypto module Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 388/671] crypto: talitos - fix AEAD processing Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 398/671] crypto: inside-secure - fix zeroing of the request in ahash_exit_inv Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 399/671] crypto: inside-secure - fix queued len computation Sasha Levin
2020-01-16 17:01 ` [PATCH AUTOSEL 4.19 474/671] crypto: ccp - Reduce maximum stack usage Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 486/671] crypto: caam - free resources in case caam_rng registration failed Sasha Levin
2020-01-16 17:03 ` Sasha Levin [this message]
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 617/671] hwrng: omap3-rom - Fix missing clock by probing with device tree Sasha Levin
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 658/671] crypto: sun4i-ss - fix big endian issues Sasha Levin

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