netdev - Re: hard hang through qdisc

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Message-ID: <47A1E556.3050900@trash.net>
Date:	Thu, 31 Jan 2008 16:12:22 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Andi Kleen <ak@...e.de>
CC:	hadi@...erus.ca, netdev@...r.kernel.org
Subject: Re: hard hang through qdisc

Andi Kleen wrote:
>> Works for me:
>>
>> qdisc tbf 8001: root rate 1000bit burst 10b/8 mpu 0b lat 720.0ms
>>   Sent 0 bytes 0 pkt (dropped 9, overlimits 0 requeues 0)
>>   rate 0bit 0pps backlog 0b 0p requeues 0
>>
>> Packets are dropped as expected.
> 
> I can still reproduce it on 64bit with http://halobates.de/config-qdisc
> (all qdiscs etc. compiled in for testing) 
> with latest git tip (8af03e782cae1e0a0f530ddd22301cdd12cf9dc0)
> 
> The command line above causes an instant hang. Also tried it with
> newer iproute2 (the original one was quite old), but it didn't make
> a difference.
> 
> Perhaps it's related to what qdiscs are enabled?


I'm also testing on 64 bit, with all qdiscs enabled as modules.

> Can you please try with the above config?


I'll give it a try later.
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