提交 a37d3b54 编写于 作者: Z Zhengchao Shao 提交者: Zheng Zengkai

crypto: hisilicon/hpre - don't use GFP_KERNEL to alloc mem during softirq

mainline inclusion
from mainline-master
commit 98dfa934
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5MK7S
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=98dfa9343f37

----------------------------------------------------------------------

The hpre encryption driver may be used to encrypt and decrypt packets
during the rx softirq, it is not allowed to use GFP_KERNEL.

Fixes: c8b4b477 ("crypto: hisilicon - add HiSilicon HPRE accelerator")
Signed-off-by: NZhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NJiangshui Yang <yangjiangshui@h-partners.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
上级 f3d257b5
......@@ -252,7 +252,7 @@ static int hpre_prepare_dma_buf(struct hpre_asym_request *hpre_req,
if (unlikely(shift < 0))
return -EINVAL;
ptr = dma_alloc_coherent(dev, ctx->key_sz, tmp, GFP_KERNEL);
ptr = dma_alloc_coherent(dev, ctx->key_sz, tmp, GFP_ATOMIC);
if (unlikely(!ptr))
return -ENOMEM;
......
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