[缺陷描述]： kernel-selftests：执行netfilter目录下nft_nat.sh用例概率fail，socat[338403] E connect(5, AF=2 10.0.1.99:2000, 16): Connection refused 测试日志： PASS: netns routing/connectivity: ns0-0KutG4Cb can reach ns1-0KutG4Cb and ns2-0KutG4Cb PASS: ping to ns1-0KutG4Cb was ip NATted to ns2-0KutG4Cb PASS: ping to ns1-0KutG4Cb OK after ip nat output chain flush PASS: ipv6 ping to ns1-0KutG4Cb was ip6 NATted to ns2-0KutG4Cb 2023/07/27 15:26:14 socat[338403] E connect(5, AF=2 10.0.1.99:2000, 16): Connection refused ERROR: inet port rewrite PASS: ping to ns1-0KutG4Cb was inet NATted to ns2-0KutG4Cb PASS: ping to ns1-0KutG4Cb OK after inet nat output chain flush PASS: ipv6 ping to ns1-0KutG4Cb was inet NATted to ns2-0KutG4Cb PASS: ip IP masquerade for ns2-0KutG4Cb PASS: ip6 IPv6 masquerade for ns2-0KutG4Cb PASS: inet IP masquerade for ns2-0KutG4Cb PASS: inet IPv6 masquerade for ns2-0KutG4Cb PASS: ip IP masquerade fully-random for ns2-0KutG4Cb PASS: ip6 IPv6 masquerade fully-random for ns2-0KutG4Cb PASS: inet IP masquerade fully-random for ns2-0KutG4Cb PASS: inet IPv6 masquerade fully-random for ns2-0KutG4Cb PASS: ip IP redirection for ns2-0KutG4Cb PASS: ip6 IPv6 redirection for ns2-0KutG4Cb PASS: inet IP redirection for ns2-0KutG4Cb PASS: inet IPv6 redirection for ns2-0KutG4Cb FAIL: nftables v0.9.3 (Topsy) [环境信息]： 复现环境： anck 5.10 x86 物理机 复现概率：概率不等，1/30-1/2 内核信息： # uname -r 5.10.134-57.git.d398846bd.an8.x86_64 操作系统信息： # cat /etc/os-release NAME="Anolis OS" VERSION="8.8" ID="anolis" ID_LIKE="rhel fedora centos" VERSION_ID="8.8" PLATFORM_ID="platform:an8" PRETTY_NAME="Anolis OS 8.8" ANSI_COLOR="0;31" HOME_URL="https://openanolis.cn/" cpu信息： # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 24 On-line CPU(s) list: 0-23 Thread(s) per core: 2 Core(s) per socket: 12 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel BIOS Vendor ID: Intel CPU family: 6 Model: 63 Model name: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz BIOS Model name: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz Stepping: 2 CPU MHz: 2292.150 CPU max MHz: 2500.0000 CPU min MHz: 1200.0000 BogoMIPS: 4988.74 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 30720K NUMA node0 CPU(s): 0-23 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single pti intel_ppin ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc dtherm arat pln pts md_clear flush_l1d 内存信息： # free -h total used free shared buff/cache available Mem: 62Gi 2.3Gi 57Gi 186Mi 3.4Gi 59Gi Swap: 2.0Gi 88Mi 1.9Gi [复现步骤]： 下载当前内核对应的kernel源码包 rpm -ivh xxx.src.rpm 默认安装到/root下 yum-builddep -y rpmbuild/SPECS/kernel.spec 自动安装前置依赖包，需要yum-utils rpmbuild -bp ./rpmbuild/SPECS/kernel.spec # 这个步骤会打相关的patch， 解压缩tar包，生成BUILD目录 cd rpmbuild/BUILD/kernel-xxx/linux-xxx/ cd /tools/testing/selftests/netfilter make 执行测试用例 ./nft_nat.sh [期望结果]： 用例pass [实际结果]： 用例fail [原因分析]： 应该是用例问题，上游有修复patch https://lkml.kernel.org/netdev/20230227093646.1066666-1-liuhangbin@gmail.com/T/#m5779de55c3a6788d5974509e08ee8a24ff95670d