From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f172.google.com (mail-yw1-f172.google.com [209.85.128.172]) (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 E740E16B735; Wed, 12 Jun 2024 07:00:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718175606; cv=none; b=YJEPxN04yUtVgi6qpBeK5PJnAZ0hkP6ek1iGWnvmVE8eIxnm0omxE/5vMsWK8SXpzQ3HDuj0yUcBGAuq6vboPvVM4ofMGI+dPUk1wrS9Nocfh4Rl5tpTQERh1MGDUGmv4xcjMGXQlyn0jda3JAx+4uyU98WXSCtwBv8/8RC06C8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718175606; c=relaxed/simple; bh=l2FWL3MaYkxGpNjR5SVeqc1ygoLE6HrOrfvSJrnDPZA=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Content-Type; b=KTTaUp+9UUxt4L5GCNcMfh6w0sdYYHcPjd5neskr6VGpsw8+76di7iZYDpjpjkVNvwnmBxcsF9RIM2OyMd2AQQr4n3Pgff9B5VlkZJkCOtiXPF0ZyqjeiMSMirDILF2pXDkZFWIuU33r9463HQ//JKQtObdjzXiXSjNlzlgEbgs= 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=gyn5Jzs3; arc=none smtp.client-ip=209.85.128.172 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="gyn5Jzs3" Received: by mail-yw1-f172.google.com with SMTP id 00721157ae682-62f39fcb010so11676767b3.1; Wed, 12 Jun 2024 00:00:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718175604; x=1718780404; darn=vger.kernel.org; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=l2FWL3MaYkxGpNjR5SVeqc1ygoLE6HrOrfvSJrnDPZA=; b=gyn5Jzs3KjQgaZ8ZQo2xL3Jgvu9v8j3ZmrmBH9X6MGPFbLIOod81gcOrWBq3L8kAeG z53IkFc+cA9SmFCOAM0KoKlMtYGjRU+AgP6mtoLw3Fi1Dl2SVcDMwPpkHDhRFhyKQhTf MbFRgJTgMwBOkJ9UA3+FTutuwDDRSqH/9F7NdBLsKZvHOYvOv6VI1KdVLWJ98ayipWGi 2bavyBYSVzX9d3zW71v8I2ndk+co3vmddJwVYCHa2JulziFLP3b3cr4LoBQ2VqcrzLq3 YAUvP/dL5wPZn+9+rN3axUzXmatVKAFEKXHEeaXjjVvVl57hgEWRjOME16JP33KxULEk z6rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718175604; x=1718780404; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=l2FWL3MaYkxGpNjR5SVeqc1ygoLE6HrOrfvSJrnDPZA=; b=rxxwgifvHoA43Uk89+A2xeYBXpgGNxBsrHbVmLf7fMo7A8JuMi8KSXfEoPSdBbytDV HLfR42KS5MUMSe/2fJtt/E3ZS3lKEBy7TR9rgtT6dGC57N01/zXR/GcckLzDtURiNYeU NyPUhNoQM/AjIHPHtPqJiy8iowRiuC3H3nYhYkPAYQX52OuyMzGIQOzNa/XIeKpMz2p4 vun+Z34f3emfQDt7TO9Ee0d5VxDN4LR4W5F26TPuiQYM2Q7hAzmPWWivDxy8Lwo/Hnx4 RD5pm/69emqO7T0jAPvgfh4LIhq69QR2KV6W3KQ/fcrKd4PqrlMYPbdIUUjfUr/gB0OS ssCg== X-Forwarded-Encrypted: i=1; AJvYcCX+oR2O7L+9TlQ6596bEQBhfidzWaYuDzLKeYuzQMl9ZPR6cOxsmihGvA9XLkENxWRt9msI5xT3oA/EuSGjM47ASGG6bmVs7i6x5oFomsVIl5gZywGCBwK626HYLxNX6YBqUuvDKpQ= X-Gm-Message-State: AOJu0YzAAKHMjhAiAqo7mGUdTbi64h1YYWXTGQJClkKbebxeEu6DQQQA cTfcfDfRjhpXsFMo9PUsjzYMRM+xeldCrsEfeE8GEFPiSNxb1AiuDgjx+VE6dN93eWkldQc10uj P2QaTmNzt59MTNB1J9bRfvGGREms= X-Google-Smtp-Source: AGHT+IH0PCdMZtOPs327plhtNOg8Po5yi4NuZcxFq+L5xNI8cUuoAoqhrkeCv0yXRtHtv34xRnq5okoYZehy6aEu55Y= X-Received: by 2002:a0d:f443:0:b0:61b:3356:d28c with SMTP id 00721157ae682-62fbb7f673emr9479367b3.2.1718175603741; Wed, 12 Jun 2024 00:00:03 -0700 (PDT) Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <9baaad14-0639-4780-809a-0548e842556f@gmail.com> In-Reply-To: <9baaad14-0639-4780-809a-0548e842556f@gmail.com> From: chase xd Date: Wed, 12 Jun 2024 08:59:54 +0200 Message-ID: Subject: Re: [io-uring] WARNING in __put_task_struct To: Pavel Begunkov , Jens Axboe , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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. Pavel Begunkov =E4=BA=8E2024=E5=B9=B46=E6=9C=8812= =E6=97=A5=E5=91=A8=E4=B8=89 03:17=E5=86=99=E9=81=93=EF=BC=9A > > 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