Bug 7616 - SMC-R Link-Group由对称类型协商为非对称类型时执行smcss -R系统发生core
Summary: SMC-R Link-Group由对称类型协商为非对称类型时执行smcss -R系统发生core
Status: NEW
Alias: None
Product: ANCK 5.10 Dev
Classification: ANCK
Component: net (show other bugs) net
Version: 5.10.y-16
Hardware: x86_64 Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: Wen_Gu
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-11-23 15:59 UTC by henaumars
Modified: 2023-11-24 09:42 UTC (History)
2 users (show)

See Also:

Attachments
core (638.34 KB, image/png)
2023-11-23 15:59 UTC, henaumars 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description henaumars 2023-11-23 15:59:47 UTC 
Created attachment 909 [details]
core

Description of problem:
当SMC-R的Link-Group从SYM变为ASYMP（手动down掉一个网卡）后，在Server端或者Client端执行smcss -R，系统发生core

Version-Release number of selected component (if applicable):
系统：anolis8.8 5.10.134-16版本内核
网卡：2*CX5  2*CX6 Dx  驱动：5.10.134-16.an8.x86_64

How reproducible:
必现

Steps to Reproduce:
sysctl net.ipv6.conf.default.disable_ipv6=1
sysctl net.ipv6.conf.all.disable_ipv6=1
modprobe smc
modprobe smc_diag
sysctl net.tcp2smc=1
smcr ueid add 123(Client端执行)
ip a a 22.22.22.111/24 dev ens13np0(Client端执行)
ip a a 11.11.11.111/24 dev ens14np0(Client端执行)
smcr ueid add 456(Server端执行)
ip a a 22.22.22.211/24 dev ens13np0(Server端执行)
ip a a 11.11.11.211/24 dev ens14np0(Server端执行)
smcr ueid del SMCV2-DEFAULT-UEID

Server端：
iperf3 -s

Client端：
iperf3 -c 22.22.22.211 -i 1 -t 1000

查看Link-Group情况
smcr -dd linkgroup link-show all
smcss -R
此时建立起来对称链路

手动在Server端断掉一个网卡
ip link set ens13np0 down

查看Link-Group情况（Server端、Client端均可）
smcr -dd linkgroup link-show all（正常执行）
此时变为非对称链路
smcss -R（core，系统重启）

Actual results:
执行smcss -R后系统发生core，重启

Expected results:
命令正常执行并输出正确结果

Additional info:
core信息见附件