linux-kernel - [PATCH 1/3] crypto: sa2ul - Hide pointer and fix -Wpointer-to-int-cast in dev

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Date:   Wed, 26 Aug 2020 18:29:52 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Gilad Ben-Yossef <gilad@...yossef.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 1/3] crypto: sa2ul - Hide pointer and fix -Wpointer-to-int-cast in dev_dbg()

Pointers should not be printed because they might leak important
information about address space layout.  Use %p to hash the value.  This
also fixes compilation warnings on 32-bit architecture:

    drivers/crypto/sa2ul.c:1486:33: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/crypto/sa2ul.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index 5bc099052bd2..4a950437bf44 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -1482,8 +1482,8 @@ static int sa_sha_init(struct ahash_request *req)
 	struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
 	struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
 
-	dev_dbg(sa_k3_dev, "init: digest size: %d, rctx=%llx\n",
-		crypto_ahash_digestsize(tfm), (u64)rctx);
+	dev_dbg(sa_k3_dev, "init: digest size: %d, rctx=%p\n",
+		crypto_ahash_digestsize(tfm), rctx);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
 	rctx->fallback_req.base.flags =
-- 
2.17.1