!1831 fix NULL pointer dereference in __nf_nat_mangle_tcp_packet

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/SSI5KSNIBIND62KVZGNOMSAFARHCSUFY/ 
When nf_nat_ipv4.ko is not loaded, l3proto is NULL pointer. If the
csum_recalc function of l3proto is called, it will cause NULL pointer
access issue.

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v3: add space after return type for Patch 3/3
v2: modify commit message for Patch 3/3
---

Florian Westphal (2):
  netfilter: nat: remove csum_recalc hook
  netfilter: nat: fix udp checksum corruption

Zhengchao Shao (1):
  netfilter: nat: fix kabi change


-- 
2.34.1
 
https://gitee.com/openeuler/kernel/issues/I7O0PV 
 
Link:https://gitee.com/openeuler/kernel/pulls/1831

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Liu YongQiang <liuyongqiang13@huawei.com>