Re: [PATCH] crypto: hisilicon/hpre - fix unmapping invalid dma address

From: Hui Tang
Date: Mon Apr 19 2021 - 07:50:37 EST

On 2021/4/16 19:26, Herbert Xu wrote:
On Sat, Apr 10, 2021 at 05:49:17PM +0800, Hui Tang wrote:
Currently, an invalid dma address may be unmapped when calling
'xx_data_clr_all' in error path, so check dma address of sqe in/out
whether it has been mapped before calling 'dma_free_coherent' or

An abnormal case is as follows:
-> hpre_curve25519_src_init
-> hpre_curve25519_hw_data_clr_all

Fixes: a9214b0b6ed2(crypto: hisilicon - fix the check on dma address)
Signed-off-by: Hui Tang <tanghui20@xxxxxxxxxx>
drivers/crypto/hisilicon/hpre/hpre_crypto.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

This triggers new sparse warnings.

Thanks, I will fix it in 5.13 rc1.