From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f176.google.com (mail-yb1-f176.google.com [209.85.219.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C87952557B for ; Thu, 4 Jan 2024 17:24:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ONCkK2Va" Received: by mail-yb1-f176.google.com with SMTP id 3f1490d57ef6-dbdb124491cso542618276.1 for ; Thu, 04 Jan 2024 09:24:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1704389072; x=1704993872; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=cZATCJuCne5vU4JjCyQYXye/YLLWUyPQA304QZqyKIw=; b=ONCkK2VaTjy7eSOyZ1ePTovzhkWkLc1GbUAx7Zy2j2LWXBbVSViPLJ4xOpHdSnJgXC tgEuZjwFVDm7m9arvx/gyqt/eL9kCxrYGOvaFL9thMB8i9b5HSeRLUv4AW/6dHrZ38gN p5NY6aBLnf+fFg6QQ2lu/e2sGtvUSA1KOsnI1f5cj/pbdsDxfbcLMdDA9y38u/ELpw0Y mtR2h01cBlmL4zY6Z0Jiws0QG0n6wOpiWGjpTa1lMPsoNCvQz1WWTsCZ/bxrW4PkmWzL lUWm3CBiD3X0qYCUamHxrDomM22ilEtDGH1MDFQ/AdQCbS+e7L9KRgc3Uu+S3ObMK8z7 IBoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704389072; x=1704993872; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=cZATCJuCne5vU4JjCyQYXye/YLLWUyPQA304QZqyKIw=; b=PaBkIeQGIVTvdAc+DochmM/Ls0hI3YHysCYBn5GOJczJKJNw4XfdpXV3HHNjVsS66t wHEnxUtsrUP2eXCio/qzrIgleVfc+SVm0x0wCjk9TSUAaMeyDJ0izss5DWCKpQDypiie U8Y0FLnI2lTWz31ZHOQoslEqmTFgUT1kdnh0hV/huco18nwkyQVM6rRhnqq4+zjTon8b XKXIpVBV8boNyn8O0vF8R/mgsW7osXJCMD45jH3uBzO59VAH5d7hQc7IDcqHhQgfWWqx lnEfZKfNPuxb7BRP6Iiw5SV1RnpvRCSjF9/YjySG58DxCT36Ha1EwqXMCPzTJfKbE8BV JjfA== X-Gm-Message-State: AOJu0Yw3vOaD1pPLXrRfh+HeI3dX+qF9wTLUAxrc48QObShnl61dj8Hv 4HmtLrFGHYdNrVNsuKVnsD4= X-Google-Smtp-Source: AGHT+IH3zIaNR83TuwNIboNm3WwQc0qv8rVw/JgZVENSrnKCwGAA3eFN2Zal1hRtvdvF681BGqC7Tw== X-Received: by 2002:a25:fe0d:0:b0:dbe:30f2:48c1 with SMTP id k13-20020a25fe0d000000b00dbe30f248c1mr609506ybe.1.1704389071582; Thu, 04 Jan 2024 09:24:31 -0800 (PST) Received: from ?IPV6:2600:1700:6cf8:1240:bc3f:8a99:d840:9c38? ([2600:1700:6cf8:1240:bc3f:8a99:d840:9c38]) by smtp.gmail.com with ESMTPSA id e81-20020a25d354000000b00db41482d349sm11774577ybf.57.2024.01.04.09.24.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Jan 2024 09:24:31 -0800 (PST) Message-ID: <19913177-e83a-4900-8404-b7aa61421173@gmail.com> Date: Thu, 4 Jan 2024 09:24:29 -0800 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: net/sched - kernel crashes when replacing a qdisc node. Content-Language: en-US To: Jakub Kicinski Cc: netdev@vger.kernel.org, victor@mojatatu.com, jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us, pctammela@mojatatu.com, "David S. Miller" , Andrii Nakryiko , Alexei Starovoitov , Martin KaFai Lau , Kernel Team References: <20240103180426.2db116ea@kernel.org> From: Kui-Feng Lee In-Reply-To: <20240103180426.2db116ea@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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.