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Bug 76041 - Ingress queues on 2.6.8 cause kernel oops and crash.
Summary: Ingress queues on 2.6.8 cause kernel oops and crash.
Status: RESOLVED LATER
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Linux
: High critical (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL: http://lists.debian.org/debian-kernel...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-12-29 09:56 UTC by John Barberio
Modified: 2004-12-29 15:51 UTC (History)
0 users

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Package list:
Runtime testing required: ---

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Description John Barberio 2004-12-29 09:56:55 UTC 
The 2.6.8 kernel has a bug in net/sched/sch_api.c causing it to misalign qdisc_data

This exhibits as problem creating and destroying ingress policing.

Reproducible: Always
Steps to Reproduce:
1. tc qdisc add dev eth0 handle ffff: ingress ; tc filter add dev eth0 parent ffff: protocol ip prio 50 u32 match ip protocol 6 0xff police rate 500kbit  burst 10k drop flowid :1
2. tc qdisc del dev $DEV ingress
3. tc qdisc add dev eth0 handle ffff: ingress ; tc filter add dev eth0 parent ffff: protocol ip prio 50 u32 match ip protocol 6 0xff police rate 500kbit  burst 10k drop flowid :1

Actual Results:  
Kernel oops, and hang.

Expected Results:  
Inserted an ingress queue, and started policing. Deleted the queue. Inserted an
ingress queue, and started policing.

A patch is available at http://lists.debian.org/debian-kernel/2004/08/msg01623.html
Comment 1 Daniel Drake (RETIRED) gentoo-dev 2004-12-29 15:39:18 UTC 
We're only developing 2.6.9 and 2.6.10 right now. Please reopen if this issue also applies there.
Comment 2 John Barberio 2004-12-29 15:51:01 UTC 
In which case all ebuilds of the 2.8 kernel should be marked unstable.