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From:   Li Qiong <liqiong@nfschina.com>
To:     Herbert Xu <herbert@gondor.apana.org.au>,
        "David S . Miller" <davem@davemloft.net>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc:     linux-crypto@vger.kernel.org,
        linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        yuzhe@nfschina.com, renyu@nfschina.com,
        Li Qiong <liqiong@nfschina.com>
Subject: [PATCH] crypto: stm32 - Handle failure of kmalloc_array()
Date:   Wed, 22 Jun 2022 10:02:08 +0800
Message-Id: <20220622020208.25776-1-liqiong@nfschina.com>
Precedence: bulk

As the possible failure of the kmalloc_array(), therefore it
should be better to check it and return '-ENOMEM' on error.

Signed-off-by: Li Qiong <liqiong@nfschina.com>
---
 drivers/crypto/stm32/stm32-hash.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index d33006d43f76..fc03e32e364f 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -970,6 +970,8 @@ static int stm32_hash_export(struct ahash_request *req, void *out)
 	rctx->hw_context = kmalloc_array(3 + HASH_CSR_REGISTER_NUMBER,
 					 sizeof(u32),
 					 GFP_KERNEL);
+	if (!rctx->hw_context)
+		return -ENOMEM;
 
 	preg = rctx->hw_context;
 
-- 
2.11.0