Bug 4523 - [ANCK 4.19]net/packet: tpacket_rcv: multiple writers access the same slot beacause a slow writer is still copying
Summary: [ANCK 4.19]net/packet: tpacket_rcv: multiple writers access the same slot bea...
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: net (show other bugs) net
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: XuanZhuo
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-03-15 10:11 UTC by jiankun
Modified: 2023-08-05 14:17 UTC (History)
2 users (show)

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Description jiankun 2023-03-15 10:11:48 UTC 
Description of problem:
net/packet: tpacket_rcv: multiple writers access the same slot beacause a slow writer is still copying

Version-Release number of selected component (if applicable):
devel-4.19

How reproducible:
Easy to reproduce by running multiple netperf or similar TCP_STREAM
flows concurrently with `tcpdump -B 129 -n greater 60000`

Steps to Reproduce:
1.running multiple netperf or similar TCP_STREAM
2.tcpdump -B 129 -n greater 60000


Actual results:
some packet show in wrong order

Expected results:
packet in correct order

Additional info:
Comment 1 小龙 admin 2023-08-05 14:17:51 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/2000