linux-kernel - Re: [PATCH v2 1/7] crypto: fix a memory leak in sm2

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Message-ID: <47cf4353-b4bb-3907-6017-60bf87805d0c@linux.alibaba.com>
Date:   Fri, 28 May 2021 14:27:41 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     Hongbo Li <herbert.tencent@...il.com>, keyrings@...r.kernel.org,
        linux-crypto@...r.kernel.org, herbert@...dor.apana.org.au,
        ebiggers@...nel.org, dhowells@...hat.com, jarkko@...nel.org,
        herberthbli@...cent.com
Cc:     linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org
Subject: Re: [PATCH v2 1/7] crypto: fix a memory leak in sm2

Hi Herbert, Hongbo,

On 5/27/21 9:53 PM, Hongbo Li wrote:
> From: Hongbo Li <herberthbli@...cent.com>
> 
> SM2 module alloc ec->Q in sm2_set_pub_key(), when doing alg test in
> test_akcipher_one(), it will set public key for every test vector,
> and don't free ec->Q. This will cause a memory leak.
> 
> This patch alloc ec->Q in sm2_ec_ctx_init().
> 
> Fixes: ea7ecb66440b ("crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm")
> Signed-off-by: Hongbo Li <herberthbli@...cent.com>
> Reviewed-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
> ---
>   crypto/sm2.c | 24 ++++++++++--------------
>   1 file changed, 10 insertions(+), 14 deletions(-)
> 

Patch 1/7 is an independent bugfix patch. If possible, consider applying 
it first.

The commit message header should start with: crypto: sm2 -

Also added:

Cc: stable@...r.kernel.org # v5.10+

Best regards,
Tianjia