Bug 7098 - skb loss caused by conntrack conflicts can cause connection timeout
Summary: skb loss caused by conntrack conflicts can cause connection timeout
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: net (show other bugs) net
Version: 4.19-026.x
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: XuanZhuo
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-31 15:41 UTC by wangchuanguo_lc
Modified: 2023-10-31 16:02 UTC (History)
2 users (show)

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Description wangchuanguo_lc inspur_group 2023-10-31 15:41:05 UTC 
Description of problem:
skb loss caused by conntrack conflicts can cause connection timeout at the host that realized load balancing, for example:
-m statistics --mode random ... -j DNAT --dnat-to 10.0.0.6:5353
-m statistics --mode random ... -j DNAT --dnat-to 10.0.0.7:5353


The reason for the conntrack conflict is that 2 processes begin TCP connction at the same time.

Additional info:
The probability of triggering this issue is very low, approximately every few days.
Comment 1 小龙 admin 2023-10-31 16:02:35 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/2392