From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) (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 1B373322B6D for ; Wed, 21 Jan 2026 23:26:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769038013; cv=none; b=Ab1tONaI40bcltqXrpAygV2n335tx3qy/Zp1fduoT8Xj/ZpvKCwKndV87DktWzseMzFKGgtZo6pdqPTjKdcd5D7BqbUkyFbLwcwSxQbts8bKKIMYumlj0yz4ataap8z7/6i9Gq4YVFsTX+F28bbtNtYj3Mvg6aHXMW0mQkZO+co= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769038013; c=relaxed/simple; bh=y/oeOxO0GOtUN5+69ecjlII/V+ERLQRRkUvTD55GJso=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=CG/y+a5NbLveeHsOgJCN288sO/0gZvw2hBi5TTpWy55TwCoWrmweAbSt90u3pkeUPCUSCFfDdqMwYl/ghx2GnEcEEl2pk4eFwhv9B1t6gY8IEbW356oLTPRYg8WKHSKRxnMFn0D7eCKE/WWi5eYYQJ4u2DdmdBejNlSIZTIOPqk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.160.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oa1-f80.google.com with SMTP id 586e51a60fabf-40418f60513so1284793fac.2 for ; Wed, 21 Jan 2026 15:26:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769038011; x=1769642811; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=bBbs6LwrxjQ5f3O38K5inFZ0n0xvdo00e3QRElNJi9I=; b=Y/Lcb3JPt/UBmv1S9q2CWycn3wJfjUQW3abXUnbW4ca2abeF9jw4DD7FDXZQQIC4Sc 1wFovPNK2Fuh9D7go90O6zExDoRwnf4dDJBBXUW4cnfptJpZEO8AjTQkKy61jYmOcrNB g/1q7WxlgNZoj8VypJymovChwW7mwBpDOncTybfZmiDvCEIP08wpT+Lb4GbybLvSTGdn /V5VY5kYog4UM1i7ZStnd8xY2Ezws/oRX2QCKc1Ay5JU6l02TK6j/jqZzc17tfzuOzWb +vww/fRKLEEs7p2V4yNjKlRj5MTaN7D+S8YbGX48njHixhB8y/gNmI9Lqhp2elgxO3q6 JxDg== X-Gm-Message-State: AOJu0YxEUErS6ZtdNXsv+SUY+jIlBAdAqreR0c3vq/m+L0nYSDgLDBbk fSYpnDws81Oz1cwhvgVvF7XYBym3zgrKNpT5pnhz3d5ohqdH5GyZmj42moDrGcDoNl+H3pbNINm if4eH84BGfH0eJRmnswfFvkAC0Bz0oAyzEiSiT/KGg+ojQaS3z8Uq4uvysyl6RQ== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1b0b:b0:65b:250c:70e9 with SMTP id 006d021491bc7-661188f3577mr7242070eaf.27.1769038011063; Wed, 21 Jan 2026 15:26:51 -0800 (PST) Date: Wed, 21 Jan 2026 15:26:51 -0800 In-Reply-To: <68a2decc.050a0220.e29e5.0099.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <697160bb.050a0220.706b.001a.GAE@google.com> Subject: Forwarded: Re: [syzbot] [io-uring?] INFO: task hung in io_wq_put_and_exit (6) From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [io-uring?] INFO: task hung in io_wq_put_and_exit (6) Author: axboe@kernel.dk On 1/20/26 8:04 AM, Jens Axboe wrote: > Just to wrap this one up - there's a fairly lengthy explanation posted > here: > > https://lore.kernel.org/io-uring/937c3e38-368e-43eb-9d7e-2dcc0697799f@kernel.dk/ > > which details why this isn't really a bug, it's just slow exit due to > the odd huge reads (and number of them) syzbot queues up with io_uring > before exiting. Another retry, hoping that syzbot has unborked itself again: #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git syztest -- Jens Axboe