[缺陷描述]： kernel-selftests测试,case：net/udpgro_fwd.sh测试代码缺失函数wait_local_port_listen()，对比了下case: net/mptcp/simult_flows.sh中的函数wait_local_port_listen()将函数添加到udpgro_fwd.sh用例里面，用例可以正常运行了，但是出现部分fail的测试项，详情见【实际结果]】信息。 [重现概率]： 必现 [重现步骤] 1. 下载kernel-6.6.25-2_rc1.an23.src.rpm 2. rpm -i kernel-6.6.25-2_rc1.an23.src.rpm 3. yum-builddep -y /root/rpmbuild/SPECS/kernel.spec rpmbuild -bp /root/rpmbuild/SPECS/kernel.spec cd /root/rpmbuild/BUILD/kernel-6.6.25-2_rc1.an23/linux-6.6.25-2_rc1.an23.aarch64/tools/testing/selftests/net 4. make；./udpgro_fwd.sh [期望结果]： 用例执行PASS [实际结果]： net/udpgro_fwd.sh用例缺失函数wait_local_port_listen() =================================== # $1: ns, $2: port wait_local_port_listen() { local listener_ns="${1}" local port="${2}" local port_hex i port_hex="$(printf "%04X" "${port}")" for i in $(seq 10); do ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && break sleep 0.1 done } 用例缺失函数时执行报错信息： [root@iZbp143ti4ccpaufkzata6Z net]# ./udpgro_fwd.sh ./udpgro_fwd.sh: line 4: net_helper.sh: No such file or directory IPv4 No GRO ./udpgro_fwd.sh: line 134: wait_local_port_listen: command not found ok GRO frag list ./udpgro_fwd.sh: line 134: wait_local_port_listen: command not found fail - received 10 packets, expected 1 GRO fwd ./udpgro_fwd.sh: line 134: wait_local_port_listen: command not found fail - received 10 packets, expected 1 UDP fwd perf ./udpgro_fwd.sh: line 183: wait_local_port_listen: command not found udp tx: 2086 MB/s 35380 calls/s 35380 msg/s udp rx: 1355 MB/s 1101548 calls/s udp tx: 2054 MB/s 34842 calls/s 34842 msg/s udp rx: 1398 MB/s 1135711 calls/s udp tx: 2023 MB/s 34318 calls/s 34318 msg/s udp rx: 1432 MB/s 1163170 calls/s UDP GRO fwd perf ./udpgro_fwd.sh: line 183: wait_local_port_listen: command not found udp tx: 2016 MB/s 34200 calls/s 34200 msg/s udp rx: 1444 MB/s 1173163 calls/s udp tx: 2022 MB/s 34305 calls/s 34305 msg/s udp rx: 1451 MB/s 1178588 calls/s udp tx: 2022 MB/s 34298 calls/s 34298 msg/s udp rx: 1449 MB/s 1176780 calls/s GRO frag list over UDP tunnel ./udpgro_fwd.sh: line 134: wait_local_port_listen: command not found fail - received 10 packets, expected 1 GRO fwd over UDP tunnel ./udpgro_fwd.sh: line 134: wait_local_port_listen: command not found fail - received 10 packets, expected 1 UDP tunnel fwd perf ./udpgro_fwd.sh: line 183: wait_local_port_listen: command not found udp tx: 1846 MB/s 31321 calls/s 31321 msg/s udp rx: 0 MB/s 610 calls/s udp tx: 1859 MB/s 31535 calls/s 31535 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1853 MB/s 31441 calls/s 31441 msg/s ^C [root@iZbp143ti4ccpaufkzata6Z net]# pwd /root/rpmbuild/BUILD/kernel-6.6.25-2_rc1.an23/linux-6.6.25-2_rc1.an23.aarch64/tools/testing/selftests/net ========== 将函数 wait_local_port_listen() 自行添加到 用例 udpgro_fwd.sh可以正常运行，但是出现部分fail的测试项 =========== [root@iZbp143ti4ccpaufkzata6Z net]# ./udpgro_fwd.sh ./udpgro_fwd.sh: line 4: net_helper.sh: No such file or directory IPv4 No GRO ok GRO frag list fail - received 10 packets, expected 1 GRO fwd fail - received 10 packets, expected 1 UDP fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 2034 MB/s 34513 calls/s 34513 msg/s udp rx: 1413 MB/s 1147604 calls/s udp tx: 2038 MB/s 34573 calls/s 34573 msg/s udp rx: 1412 MB/s 1147143 calls/s udp tx: 2036 MB/s 34543 calls/s 34543 msg/s udp rx: 1408 MB/s 1143631 calls/s UDP GRO fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 2044 MB/s 34682 calls/s 34682 msg/s udp rx: 1403 MB/s 1139759 calls/s udp tx: 2045 MB/s 34687 calls/s 34687 msg/s udp rx: 1402 MB/s 1139085 calls/s udp tx: 2042 MB/s 34646 calls/s 34646 msg/s udp rx: 1407 MB/s 1142841 calls/s GRO frag list over UDP tunnel fail - received 10 packets, expected 1 GRO fwd over UDP tunnel fail - received 10 packets, expected 1 UDP tunnel fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 1351 MB/s 22923 calls/s 22923 msg/s udp tx: 1866 MB/s 31664 calls/s 31664 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1867 MB/s 31674 calls/s 31674 msg/s UDP tunnel GRO fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 1863 MB/s 31613 calls/s 31613 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1867 MB/s 31677 calls/s 31677 msg/s udp tx: 1865 MB/s 31638 calls/s 31638 msg/s udp rx: 0 MB/s 512 calls/s IPv6 No GRO ok GRO frag list fail - received 10 packets, expected 1 GRO fwd fail - received 10 packets, expected 1 UDP fwd perf udp rx: 0 MB/s 248 calls/s udp tx: 2114 MB/s 35864 calls/s 35864 msg/s udp rx: 1138 MB/s 925098 calls/s udp tx: 2127 MB/s 36078 calls/s 36078 msg/s udp rx: 1163 MB/s 945842 calls/s udp tx: 2100 MB/s 35625 calls/s 35625 msg/s udp rx: 1125 MB/s 914881 calls/s UDP GRO fwd perf udp rx: 0 MB/s 122 calls/s udp tx: 1967 MB/s 33368 calls/s 33368 msg/s udp rx: 1370 MB/s 1113222 calls/s udp tx: 1964 MB/s 33314 calls/s 33314 msg/s udp rx: 1376 MB/s 1117903 calls/s udp tx: 1965 MB/s 33339 calls/s 33339 msg/s udp rx: 1369 MB/s 1112424 calls/s GRO frag list over UDP tunnel fail - received 10 packets, expected 1 GRO fwd over UDP tunnel fail - received 10 packets, expected 1 UDP tunnel fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 1778 MB/s 30157 calls/s 30157 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1760 MB/s 29865 calls/s 29865 msg/s udp tx: 1765 MB/s 29944 calls/s 29944 msg/s udp rx: 0 MB/s 512 calls/s UDP tunnel GRO fwd perf udp rx: 0 MB/s 256 calls/s udp tx: 1761 MB/s 29868 calls/s 29868 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1769 MB/s 30004 calls/s 30004 msg/s udp tx: 1768 MB/s 29997 calls/s 29997 msg/s udp rx: 0 MB/s 512 calls/s [root@iZbp143ti4ccpaufkzata6Z net]# pwd /root/rpmbuild/BUILD/kernel-6.6.25-2_rc1.an23/linux-6.6.25-2_rc1.an23.aarch64/tools/testing/selftests/net [root@iZbp143ti4ccpaufkzata6Z net]# ./udpgro_fwd.sh^C [root@iZbp143ti4ccpaufkzata6Z net]# uname -r 6.6.25-2_rc1.an23.aarch64 [重现环境]： 环境信息：云上ecs [root@iZbp143ti4ccpaufkzata6Z breakpoints]# uname -a Linux iZbp143ti4ccpaufkzata6Z 6.6.25-2_rc1.an23.aarch64 #1 SMP PREEMPT_DYNAMIC Thu Apr 11 15:02:38 CST 2024 aarch64 aarch64 aarch64 GNU/Linux [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# cat /etc/os-release NAME="Anolis OS" VERSION="23" ID="anolis" VERSION_ID="23" PLATFORM_ID="platform:an23" PRETTY_NAME="Anolis OS 23" ANSI_COLOR="0;31" HOME_URL="https://openanolis.cn/" BUG_REPORT_URL="https://bugzilla.openanolis.cn/" [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 4.0M 0 4.0M 0% /dev tmpfs 16G 0 16G 0% /dev/shm tmpfs 6.1G 804K 6.1G 1% /run efivarfs 256K 18K 239K 7% /sys/firmware/efi/efivars /dev/nvme0n1p2 40G 13G 27G 33% / tmpfs 16G 3.1M 16G 1% /tmp /dev/nvme0n1p1 500M 6.5M 494M 2% /boot/efi tmpfs 3.1G 4.0K 3.1G 1% /run/user/0 [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# free -g total used free shared buff/cache available Mem: 30 0 28 0 1 29 Swap: 0 0 0 [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# cat /proc/cmdline BOOT_IMAGE=(hd0,gpt2)/boot/vmlinuz-6.6.25-2_rc1.an23.aarch64 root=UUID=6424d533-3c41-4ad9-89fa-1d3bf8c49fd3 ro rhgb crashkernel=0M-2G:0M,2G-64G:256M,64G-:384M iommu.passthrough=1 iommu.strict=0 cryptomgr.notests cgroup.memory=nokmem rcupdate.rcu_cpu_stall_timeout=300 quiet selinux=1 console=tty0 biosdevname=0 net.ifnames=0 console=ttyAMA0,115200n8 noibrs nvme_core.io_timeout=4294967295 nvme_core.admin_timeout=4294967295 [root@iZbp143ti4ccpaufkzata6Z breakpoints]# [root@iZbp143ti4ccpaufkzata6Z breakpoints]# lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Vendor ID: ARM BIOS Vendor ID: Alibaba Cloud Model name: Neoverse-N2 BIOS Model name: virt-rhel7.6.0 CPU @ 2.0GHz BIOS CPU family: 1 Model: 0 Thread(s) per core: 1 Core(s) per socket: 8 Socket(s): 1 Stepping: r0p0 BogoMIPS: 100.00 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm 3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm ssbs sb dcpodp sve2 sveaes svepmull svebitperm svesh a3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh Caches (sum of all): L1d: 512 KiB (8 instances) L1i: 512 KiB (8 instances) L2: 8 MiB (8 instances) L3: 64 MiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0-7 Vulnerabilities: Gather data sampling: Not affected Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Mmio stale data: Not affected Reg file data sampling: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Mitigation; CSV2, BHB Srbds: Not affected Tsx async abort: Not affected
6.6上面有修复了。后续更新一下最新的用例， https://fossies.org/diffs/linux/6.6.25_vs_6.6.26/tools/testing/selftests/net/udpgro_fwd.sh-diff.html
(In reply to yunmeng365524 from comment #1) > 6.6上面有修复了。后续更新一下最新的用例， > https://fossies.org/diffs/linux/6.6.25_vs_6.6.26/tools/testing/selftests/net/ > udpgro_fwd.sh-diff.html 上述差异并非解决本问题，实际上需要依次合入下面两个补丁（目前正在回合中）： （1） https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=master&id=1a825e4cdf457b7aef7ebbc2f1206654f5beb150 （2） https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=master&id=ba5a6476e3866c97e2c85f64b0c7dfb8fbdda18a 这两个补丁都属于前置补丁已合入，但是selftest未合入。 合入后，测试成功： # ./udpgro_fwd.sh IPv4 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp tx: 1318 MB/s 22357 calls/s 22357 msg/s udp rx: 1 MB/s 1024 calls/s udp tx: 1316 MB/s 22330 calls/s 22330 msg/s udp rx: 1 MB/s 1024 calls/s udp tx: 1313 MB/s 22281 calls/s 22281 msg/s UDP GRO fwd perf udp rx: 663 MB/s 539035 calls/s udp tx: 1119 MB/s 18979 calls/s 18979 msg/s udp rx: 669 MB/s 544387 calls/s udp tx: 1120 MB/s 18996 calls/s 18996 msg/s udp rx: 670 MB/s 544727 calls/s udp tx: 1118 MB/s 18976 calls/s 18976 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 1154 MB/s 19576 calls/s 19576 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1155 MB/s 19601 calls/s 19601 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1156 MB/s 19609 calls/s 19609 msg/s UDP tunnel GRO fwd perf udp tx: 1157 MB/s 19638 calls/s 19638 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1159 MB/s 19669 calls/s 19669 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1160 MB/s 19675 calls/s 19675 msg/s IPv6 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp tx: 1202 MB/s 20394 calls/s 20394 msg/s udp rx: 0 MB/s 768 calls/s udp tx: 1212 MB/s 20571 calls/s 20571 msg/s udp rx: 1 MB/s 1024 calls/s udp tx: 1206 MB/s 20456 calls/s 20456 msg/s UDP GRO fwd perf udp rx: 450 MB/s 365770 calls/s udp tx: 1167 MB/s 19801 calls/s 19801 msg/s udp rx: 451 MB/s 367080 calls/s udp tx: 1170 MB/s 19845 calls/s 19845 msg/s udp rx: 454 MB/s 369198 calls/s udp tx: 1167 MB/s 19800 calls/s 19800 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 1129 MB/s 19165 calls/s 19165 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1137 MB/s 19298 calls/s 19298 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1141 MB/s 19360 calls/s 19360 msg/s udp rx: 0 MB/s 549 calls/s UDP tunnel GRO fwd perf udp tx: 1149 MB/s 19491 calls/s 19491 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1151 MB/s 19523 calls/s 19523 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1147 MB/s 19469 calls/s 19469 msg/s udp rx: 0 MB/s 549 calls/s
pr已合入：https://gitee.com/anolis/cloud-kernel/pulls/3178
rc3内核上，使用x86/aarch64 ecs环境下，回归验证均通过 ============================= x86 ============================ [root@localhost net]# ./udpgro_fwd.sh IPv4 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp rx: 298 MB/s 242580 calls/s udp tx: 915 MB/s 15528 calls/s 15528 msg/s udp rx: 340 MB/s 276736 calls/s udp tx: 931 MB/s 15799 calls/s 15799 msg/s udp rx: 343 MB/s 279040 calls/s udp tx: 926 MB/s 15715 calls/s 15715 msg/s UDP GRO fwd perf udp rx: 385 MB/s 313600 calls/s udp tx: 900 MB/s 15268 calls/s 15268 msg/s udp rx: 394 MB/s 320768 calls/s udp tx: 897 MB/s 15215 calls/s 15215 msg/s udp rx: 391 MB/s 317952 calls/s udp tx: 899 MB/s 15254 calls/s 15254 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 832 MB/s 14120 calls/s 14120 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 831 MB/s 14107 calls/s 14107 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 831 MB/s 14101 calls/s 14101 msg/s UDP tunnel GRO fwd perf udp tx: 801 MB/s 13590 calls/s 13590 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 801 MB/s 13602 calls/s 13602 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 802 MB/s 13603 calls/s 13603 msg/s IPv6 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp tx: 770 MB/s 13065 calls/s 13065 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 779 MB/s 13220 calls/s 13220 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 781 MB/s 13249 calls/s 13249 msg/s udp rx: 4 MB/s 3922 calls/s UDP GRO fwd perf udp rx: 131 MB/s 106752 calls/s udp tx: 951 MB/s 16143 calls/s 16143 msg/s udp rx: 132 MB/s 107501 calls/s udp tx: 954 MB/s 16195 calls/s 16195 msg/s udp rx: 129 MB/s 105472 calls/s udp tx: 956 MB/s 16218 calls/s 16218 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 833 MB/s 14134 calls/s 14134 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 832 MB/s 14113 calls/s 14113 msg/s udp tx: 828 MB/s 14054 calls/s 14054 msg/s udp rx: 0 MB/s 512 calls/s UDP tunnel GRO fwd perf udp tx: 827 MB/s 14034 calls/s 14034 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 818 MB/s 13883 calls/s 13883 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 812 MB/s 13783 calls/s 13783 msg/s [root@localhost net]# echo $? 0 [root@localhost net]# uname -r 6.6.25-2_rc3.an23.x86_64 [root@localhost net]# pwd /root/rpmbuild/BUILD/kernel-6.6.25-2_rc3.an23/linux-6.6.25-2_rc3.an23.x86_64/tools/testing/selftests/net ======================================= aarch64 ======================== [root@localhost net]# ./udpgro_fwd.sh IPv4 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp rx: 1411 MB/s 1146616 calls/s udp tx: 2148 MB/s 36439 calls/s 36439 msg/s udp rx: 1462 MB/s 1187545 calls/s udp tx: 2112 MB/s 35821 calls/s 35821 msg/s udp rx: 1509 MB/s 1225632 calls/s udp tx: 2066 MB/s 35041 calls/s 35041 msg/s UDP GRO fwd perf udp rx: 1458 MB/s 1184630 calls/s udp tx: 2132 MB/s 36171 calls/s 36171 msg/s udp rx: 1492 MB/s 1211929 calls/s udp tx: 2125 MB/s 36052 calls/s 36052 msg/s udp rx: 1490 MB/s 1210249 calls/s udp tx: 2137 MB/s 36252 calls/s 36252 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 1911 MB/s 32426 calls/s 32426 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1907 MB/s 32350 calls/s 32350 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1902 MB/s 32262 calls/s 32262 msg/s UDP tunnel GRO fwd perf udp tx: 1915 MB/s 32488 calls/s 32488 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1911 MB/s 32422 calls/s 32422 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1904 MB/s 32294 calls/s 32294 msg/s IPv6 No GRO ok GRO frag list ok GRO fwd ok UDP fwd perf udp rx: 1162 MB/s 944403 calls/s udp tx: 2170 MB/s 36812 calls/s 36812 msg/s udp rx: 1226 MB/s 996451 calls/s udp tx: 2156 MB/s 36570 calls/s 36570 msg/s udp rx: 1284 MB/s 1044221 calls/s udp tx: 2123 MB/s 36012 calls/s 36012 msg/s UDP GRO fwd perf udp rx: 1151 MB/s 935651 calls/s udp tx: 2189 MB/s 37141 calls/s 37141 msg/s udp rx: 1192 MB/s 968963 calls/s udp tx: 2167 MB/s 36757 calls/s 36757 msg/s udp rx: 1228 MB/s 998446 calls/s udp tx: 2143 MB/s 36355 calls/s 36355 msg/s GRO frag list over UDP tunnel ok GRO fwd over UDP tunnel ok UDP tunnel fwd perf udp tx: 1822 MB/s 30916 calls/s 30916 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1795 MB/s 30459 calls/s 30459 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1774 MB/s 30091 calls/s 30091 msg/s UDP tunnel GRO fwd perf udp tx: 1877 MB/s 31838 calls/s 31838 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1866 MB/s 31660 calls/s 31660 msg/s udp rx: 0 MB/s 512 calls/s udp tx: 1840 MB/s 31209 calls/s 31209 msg/s [root@localhost net]# echo $? 0 [root@localhost net]# uname -r 6.6.25-2_rc3.an23.aarch64 [root@localhost net]# pwd /root/rpmbuild/BUILD/kernel-6.6.25-2_rc3.an23/linux-6.6.25-2_rc3.an23.aarch64/tools/testing/selftests/net [root@localhost net]# cat /etc/os-release NAME="Anolis OS" VERSION="23" ID="anolis" VERSION_ID="23" PLATFORM_ID="platform:an23" PRETTY_NAME="Anolis OS 23" ANSI_COLOR="0;31" HOME_URL="https://openanolis.cn/" BUG_REPORT_URL="https://bugzilla.openanolis.cn/"
测试回归通过，问题解决关闭。