netdev - Re: net/sched - kernel crashes when replacing a qdisc node.

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Message-ID: <19913177-e83a-4900-8404-b7aa61421173@gmail.com>
Date: Thu, 4 Jan 2024 09:24:29 -0800
From: Kui-Feng Lee <sinquersw@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, victor@...atatu.com, jhs@...atatu.com,
 xiyou.wangcong@...il.com, jiri@...nulli.us, pctammela@...atatu.com,
 "David S. Miller" <davem@...emloft.net>, Andrii Nakryiko
 <andrii@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
 Martin KaFai Lau <martin.lau@...ux.dev>, Kernel Team <kernel-team@...a.com>
Subject: Re: net/sched - kernel crashes when replacing a qdisc node.

On 1/3/24 18:04, Jakub Kicinski wrote:
> On Wed, 3 Jan 2024 17:41:54 -0800 Kui-Feng Lee wrote:
>> The kernel crashes when running selftests/bpf/prog_tests/lwt_reroute.c.
>> We got the error message at end of this post.
>>
>> It happens when lwt_reroute.c running the shell command
>>
>>     tc qdisc replace dev tun0 root fq limit 5 flow_limit 5
>>
>> The kernel crashes at the line
>>
>>     block = cl_ops->tcf_block(sch, TC_H_MIN_INGRESS, NULL);
> 
> This is the same as
> https://lore.kernel.org/all/20231231172320.245375-1-victor@mojatatu.com/#r
> right?

Yes, it is! Thanks for the information.