From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f41.google.com (mail-ej1-f41.google.com [209.85.218.41]) (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 1D71517DE2B; Wed, 12 Jun 2024 13:54:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718200450; cv=none; b=ZHaU/mzgKm+HoAAj04ZJc5BZ3O3kJRIz7amCx2KRGpZ7IXleXqvhykiWnHxlkohUIggoo8PgShg0c52ptbjQMyj3oz/Oi62kqhdHblPlm3Q1T2NMq1DlRVYRAoKq1yG82YoywnCIKj3HMouLRlP+Yh+ETIE9B9ATzpq6OARR21E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718200450; c=relaxed/simple; bh=0n4qv6NG9+E+G1mmCBlGWR8bcBrn9FxGi4U/ghc+jMk=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=pOLvDTZL48/PzRIq7rJr+v19LvOzPENOuPPi8J1LQHFKRSDKBh9qCK/egcPFJajyfHuD1O2r7K6Q7lY0N2GmGCNp9Lj6vbyEqTU/dVDHzqIPETJAb6QXl5cQiIA8p+0e5cKc9eV/0lhgjx4zCr/iTwuot8F0k4uEJVAMh8ee3sc= 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=TtmDfUOe; arc=none smtp.client-ip=209.85.218.41 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="TtmDfUOe" Received: by mail-ej1-f41.google.com with SMTP id a640c23a62f3a-a6ef8e62935so308243466b.3; Wed, 12 Jun 2024 06:54:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718200447; x=1718805247; 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=p2ZwRFtLK8ixvJ/wY/t4DAaHcZNjb8eBDynqr74sQJU=; b=TtmDfUOeNYA+QxuJxG38H9Lw9vYLFzOrGg5Dr3Eu5bzWXz1kbgiV/MELcTwAbNILMi 69O5gZ3p0VWIT5mbvD5gOWEMYlUrk5jhFishY43HaUmW/vkZVCR7xfdvSCziamWzeX1V mIBGeSfczjr+19tXCSE7seHp/KMWRYatvZx683GJMrwi0BBCa9q2DCQTMUVHfRAhNwpO J5wO+Y4uVSElzv+tbfq7MZZ9kOIAiIVy9Gd4Tah9SeDzsGFRf84ydwEvbD/x8OjjzbUJ QzP1MSmNVazPIfPtMiA++Cm9aKeteIWyxL7mXDZTA4oOoaayPNGF7Z6wKiFelATe8ls6 ey3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718200447; x=1718805247; 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=p2ZwRFtLK8ixvJ/wY/t4DAaHcZNjb8eBDynqr74sQJU=; b=BowsJCdHvkorHBysljTZ87wGBATJvWbzNHk28ogs6FkNQchm3zDKFpYx8Y1JMHxwDo IJI3Gs84h33T9nchT5iDEQ57ytYWFiRia38WxR2vZgvOHnKJ3NLiEDPnqsvMYq92MfWD l8cw2yc4hr/gsiPD5PLR5BVXUe9vJJjXP1wK+KSmD+TsjQdQIVvnCu9SFfH8fLbZ1yD4 5Lbjc5WiZJdj9l+u5QPT9PzridqAPnMi8bvfeV2Z3MvHaFDfZjhvyuG4s0/O2xQ7Wtap j+VQ40LKXVAx6ECPwZFjzNNiV5vRLlekGZ+YE5SbHBngiz7kpv5n9UwoPuU2fAGpLH8p mIRQ== X-Forwarded-Encrypted: i=1; AJvYcCXFeV+1xgaAWGE86kV0hnpBA4bCDit0v+HtH/4WQNK582tdEm7ptc0juCCIkIQ59grCt4xWi8HS82QQVQnyORzIgP/823qeAvQrqC/IjBStRVt2ANTGP8/CkcPMjPV1MBba0qLCAWo= X-Gm-Message-State: AOJu0Yw+61IQG5g9JrLAd4MBZmz09ckvd/N/ZkaEBqYWo2T0J1kVOcjR LbFymw0UTnyJOITlp5vf0aIJgAKH938MenWX1rg3tCbyfvIbBCOp X-Google-Smtp-Source: AGHT+IHuGl6WjNGlT3H5D496VhLA2zp1fgWFBDM8Sb/mr6A/NPted1/MiCnc/mu8MZz+vA8a6N/OqA== X-Received: by 2002:a17:906:475a:b0:a6f:4b2a:2877 with SMTP id a640c23a62f3a-a6f4b2a28b4mr108581866b.22.1718200447078; Wed, 12 Jun 2024 06:54:07 -0700 (PDT) Received: from [192.168.42.148] ([163.114.131.193]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a6f1c2b1e80sm438247266b.145.2024.06.12.06.54.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Jun 2024 06:54:06 -0700 (PDT) Message-ID: <07dcda2d-1b78-4ac0-8ce1-5956c67b3778@gmail.com> Date: Wed, 12 Jun 2024 14:54:14 +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 , Jens Axboe , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <9baaad14-0639-4780-809a-0548e842556f@gmail.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 6/12/24 07:59, chase xd wrote: > Repro hit the bug with a low probability, so maybe you need to try > more times on the branch I reported. Also, this bug still exists in > branch 6.10.0-rc1-00004-gff802a9f35cf-dirty #7. Yeah, unreliable, just hit something with some version, will try to repro with 6.10 and see what's going on > Pavel Begunkov 于2024年6月12日周三 03:17写道： >> >> 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