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

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Message-ID: <ZZZ3-DrwQxChByGC@nanopsycho>
Date: Thu, 4 Jan 2024 10:18:48 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Kui-Feng Lee <sinquersw@...il.com>, netdev@...r.kernel.org,
	victor@...atatu.com, jhs@...atatu.com, xiyou.wangcong@...il.com,
	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.

Thu, Jan 04, 2024 at 03:04:26AM CET, kuba@...nel.org 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.