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From: Thomas BOURGOIN <thomas.bourgoin@foss.st.com>
To: Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
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CC: <linux-crypto@vger.kernel.org>, <devicetree@vger.kernel.org>,
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<linux-kernel@vger.kernel.org>,
Thomas Bourgoin <thomas.bourgoin@foss.st.com>,
<stable@vger.kernel.org>
Subject: [PATCH v2 4/7] crypto: stm32 - fix loop iterating through scatterlist
for DMA
Date: Thu, 13 Jul 2023 17:15:15 +0200
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|
| Series |
Support of HASH on STM32MP13
|
|
Commit Message
Thomas Bourgoin
July 13, 2023, 3:15 p.m. UTC
From: Thomas Bourgoin <thomas.bourgoin@foss.st.com> We were reading the length of the scatterlist sg after copying value of tsg inside. So we are using the size of the previous scatterlist and for the first one we are using an unitialised value. Fix this by copying tsg in sg[0] before reading the size. Fixes : 8a1012d3f2ab ("crypto: stm32 - Support for STM32 HASH module") Cc: stable@vger.kernel.org Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com> --- Changes in v2: - Add Fixes 8a1012d3f2ab ("crypto: stm32 - Support for STM32 HASH module") - Add Cc: stable@vger.kernel.org drivers/crypto/stm32/stm32-hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c index c179a6c1a457..519fb716acee 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -678,9 +678,9 @@ static int stm32_hash_dma_send(struct stm32_hash_dev *hdev) } for_each_sg(rctx->sg, tsg, rctx->nents, i) { + sg[0] = *tsg; len = sg->length; - sg[0] = *tsg; if (sg_is_last(sg)) { if (hdev->dma_mode == 1) { len = (ALIGN(sg->length, 16) - 16);