From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (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 C844F19E; Wed, 12 Jun 2024 01:17:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718155077; cv=none; b=PDpNYYRCaN6cO1TedhP2B/T3k3D9KZ+liNWiyyLXtajlpYSt8UZai14ismCDw+kkxDpSC/zfcr9VFcPUFCige/HFMVg043+O1e+YvVYcw5iCZNIGTCK3xOikG5Cah8DC4WggOCheqaSCvte57EJi/eMQYFHY/Bg10tT6vrvSF2E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718155077; c=relaxed/simple; bh=Wpot//ptBnwxFpH8gLdMHLSAI8pYw5L7pb2Ed/6G3zk=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=S7Uls4dLedbdjTJJO8UYGizo0iD3JI5XqaejcVLFJ+l4o0VjRCt5gZnYq/GVYOT80ASMB0gnkHYtYFgM9ig5cx09o3J5TGMJ/wUBGW7/W7CCehN/0HRrIJTiMbnwua/2nTtXRZqFbScWRVX/nGL86X7v55qZisps/5zO0HwXM+o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=mdEiVUvS; arc=none smtp.client-ip=209.85.128.51 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="mdEiVUvS" Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-421757d217aso43380215e9.3; Tue, 11 Jun 2024 18:17:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718155074; x=1718759874; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id:from :to:cc:subject:date:message-id:reply-to; bh=pCv6ajRKhcY8qVxlzaOwPMPORHc/9Fq5KLDBItmkFu8=; b=mdEiVUvS9zLM0TWYQuchsidJ2hr3bmPZfB0fBdvdAS8SoT+aFVQ60uBmz3nHZCe4dj J+muGpKpTD2MXW1uwxKKNB6XOgzXa8/Ntcl7YwVgV1bZnUk2A9QOmilD/TUGWvJl60HB f1LLggwQ5m8DQVYck24qWKlI8/78Pzv3ZweNnMKzvAtS9zHwKC+0sN2dYIlniC4YKcGS Y/xxElwmSC9/V3dhHoa31b/z56JBQ6ngdqduQF/TOpXs42hT1UtxDKZ2uQXWs6qGXu+6 r6cx3ZfQA8T2NUTvWgiOLHNPF8YObUSS1xQfltGNWW5faCxflAMpLEQuc2fuMZd7qU9g Dulw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718155074; x=1718759874; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=pCv6ajRKhcY8qVxlzaOwPMPORHc/9Fq5KLDBItmkFu8=; b=Syd3XudG5OMU3HbT21lOmxXkG9M4A3vFBQYE7UpN/5BsUkFzSD3ON1edJI7n8vZtGx ko/6GTdsXiQpsfEmdegKQ/OkAQkZz0RMYCrNlLDYLSafX5L6MmBt0nIH1kKq2INaqGlC jUJJ4RNuVUFFQDDyn0JBSyssfsi4TqK8R4IP71eTse2q5feCT+tmiMOmjN0VH9L0iLQ7 ETTWxZYzLzCkUTpFtOkrK8zjeFt2AX7XItqHMSCbHOoDVBEPk3c19JAMr6OykLMy/gIt YhoLTbb8+BrbDDAxbyY8hVnEsRzhSu1C8i4acNVEUcVCN8O9hWxvpRN2xcaNaw4Voj/C v/ug== X-Forwarded-Encrypted: i=1; AJvYcCX7N7LSYFwKCr58q4OiUpohS0SBPsQgfw9FOxMwREdMxCwFKc2tLNWrypzUQkdSg3lNv83Vb4pP1/3hIR5d1HBT4CgccrZrnhVTMbNED2W1X/YS9rn/eQQ8HJAMHLkZx+TqdNTKXJw= X-Gm-Message-State: AOJu0YzYy8aCPv6Pk4xyfsKGFOoA8BeR3clv5E3MI3pcYCwpCMkE8O6z tE5JyDe0Clw0iSlHEjBWQawaRddcV9ED6Gxi7HKc4YpKzLzh+N27 X-Google-Smtp-Source: AGHT+IHG1eIIlq1XhVH8enTwZXdY/KeybOcu3BmNE99YBuSztl54+G1oyVFyIohnm6dp2p1QTetpjQ== X-Received: by 2002:a05:600c:500e:b0:421:7f07:92cf with SMTP id 5b1f17b1804b1-422867c00c0mr6268585e9.36.1718155073925; Tue, 11 Jun 2024 18:17:53 -0700 (PDT) Received: from [192.168.42.217] ([85.255.235.105]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42286fe9263sm5588205e9.15.2024.06.11.18.17.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Jun 2024 18:17:53 -0700 (PDT) Message-ID: <9baaad14-0639-4780-809a-0548e842556f@gmail.com> Date: Wed, 12 Jun 2024 02:18:00 +0100 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [io-uring] WARNING in __put_task_struct To: chase xd , axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 6/7/24 18:15, chase xd wrote: > Dear Linux kernel maintainers, > > Syzkaller reports this previously unknown bug on Linux > 6.8.0-rc3-00043-ga69d20885494-dirty #4. Seems like the bug was > silently or unintendedly fixed in the latest version. I can't reproduce it neither with upstream nor a69d20885494, it's likely some funkiness of that branch, and sounds like you already tested newer kernels with no success. You can also try it with a stable kernel to see if you can hit it. -- Pavel Begunkov