From d7f01649f4eaf1878472d3d3f480ae1e50d98f6c Mon Sep 17 00:00:00 2001
From: Jia Jie Ho <jiajie.ho@starfivetech.com>
Date: Mon, 29 Apr 2024 14:06:39 +0800
Subject: [PATCH] crypto: starfive - Do not free stack buffer

RSA text data uses variable length buffer allocated in software stack.
Calling kfree on it causes undefined behaviour in subsequent operations.

Cc: <stable@vger.kernel.org> #6.7+
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 drivers/crypto/starfive/jh7110-rsa.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/crypto/starfive/jh7110-rsa.c b/drivers/crypto/starfive/jh7110-rsa.c
index 4d7eb3d1e764b3..33093ba4b13afe 100644
--- a/drivers/crypto/starfive/jh7110-rsa.c
+++ b/drivers/crypto/starfive/jh7110-rsa.c
@@ -276,7 +276,6 @@ static int starfive_rsa_enc_core(struct starfive_cryp_ctx *ctx, int enc)
 
 err_rsa_crypt:
 	writel(STARFIVE_RSA_RESET, cryp->base + STARFIVE_PKA_CACR_OFFSET);
-	kfree(rctx->rsa_data);
 	return ret;
 }