From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 0A5031BDAAF for ; Tue, 24 Dec 2024 12:54:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735044846; cv=none; b=Cf+fCVEvLZr+0Mjlcv+EmEkBRnwBBQsENa1do3GDNAgCnJeQI9H0e5Bp1USa1yplcTBMtJ/6aonne2YVIp0bICDyVjoQ994q/3uNllT6AZnrR6XCgPaVEU6jsCQJw+G3GYFiETqCJjN1q2cAwr3RW7Pw4DOC8+DeTwSQB6YLysU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735044846; c=relaxed/simple; bh=evKkQ6HRgFCs4qvyPiGUzDaLav0G3Y1QWg/On8rwMgs=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=ImRkK/VY2o2RQSLxIfzyclNAP61S09kKSeRZWoPFUBNW670RSmMQlrRs04FIeiXQvpMbj5fKr6JO+m+swZ1yQ+gaSMb3F7DZLKoyw/OvMHEG8hzvVjNOMuTrmCoABgTpUdx/aoUHULS2F4mFltg8yRPXG7YAjzmDxd7pQoiSFac= 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=209.85.166.197 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-il1-f197.google.com with SMTP id e9e14a558f8ab-3a9d075bdc3so87796465ab.3 for ; Tue, 24 Dec 2024 04:54:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735044844; x=1735649644; 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=1AXNF3HG5kzxLMUq/sCEuz5IDc2syA6hOB1XtzvB2IU=; b=mRLVybk3Ei964kbKEw2pp+lV2wCimlSFOhgfo8+AenNGsfDjwo4YPyPuerJt+2BCS0 9gOj1tD4G3l4fceCV6Dflf1AWy8+a1XO11HT7UCOgXI2EYjsIlwDW/CtS0KX20NaEMPs Tl2V7miWF7JJm3Z8NL/PTgzACSoEJkJB+pcassns8ATWdX3PSrryhvlk/m3cP+8rE+Dg 7lrrPrimbcfW+jcT7Gp+XSuip6Pv4Z4oU5mkUS/7yA5TRaAzw3uIKwlFBq1PLBSg6zQm vxJ+KQ64dZvzqVVTRcHamYgb1wBzIgveZ8HX5RWMppLoBjkyuUOzdJmCiJUAaYY1L/c7 2Fkg== X-Forwarded-Encrypted: i=1; AJvYcCWJzezkXMp34c9PckeRjCN5JNk8ri9MwLgi73/9qR5IcYi7OlWxFBzJTQJc/qHRZsQfP97mPiBQfszRMQ==@vger.kernel.org X-Gm-Message-State: AOJu0YxCLXzZ9QutQSCNnWj4ohWHwQu9jpAiHe5rNngnGQiEakuNiMOW Cz0gQ0/TTMTjTgoJoLoOhaVJuEDhrwx+2J1BLLy2edrWeaseHoqttm7dxDTc5lCAlIPfOtU1SS2 GLEgZw/t18vp109fFCzglOuNN9QfRCdGlVXiId1X0zjy/y9rjgqqkcj8= X-Google-Smtp-Source: AGHT+IFjNd65RorbDiw7iPiMhcltosJUGUn7EAB+95J5DOXJQ45jC/wCOMvdSBeDexbbzglCBhMkkC+Z1x7VGvejquji3l3KC5+/ Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3b85:b0:3a7:8c3f:edce with SMTP id e9e14a558f8ab-3c2d14d21a9mr179594035ab.3.1735044843942; Tue, 24 Dec 2024 04:54:03 -0800 (PST) Date: Tue, 24 Dec 2024 04:54:03 -0800 In-Reply-To: <672ad716.050a0220.2a847.1a9e.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <676aaeeb.050a0220.2f3838.01aa.GAE@google.com> Subject: Re: [syzbot] [usb?] [block?] possible deadlock in blk_mq_alloc_request From: syzbot To: axboe@kernel.dk, hch@lst.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, ming.lei@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit f1be1788a32e8fa63416ad4518bbd1a85a825c9d Author: Ming Lei Date: Fri Oct 25 00:37:20 2024 +0000 block: model freeze & enter queue as lock for supporting lockdep bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15fd34c4580000 start commit: c88416ba074a Add linux-next specific files for 20241101 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=17fd34c4580000 console output: https://syzkaller.appspot.com/x/log.txt?x=13fd34c4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=704b6be2ac2f205f dashboard link: https://syzkaller.appspot.com/bug?extid=ca7d7c797fee31d2b474 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1250b630580000 Reported-by: syzbot+ca7d7c797fee31d2b474@syzkaller.appspotmail.com Fixes: f1be1788a32e ("block: model freeze & enter queue as lock for supporting lockdep") For information about bisection process see: https://goo.gl/tpsmEJ#bisection