From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27431C43441 for ; Mon, 12 Nov 2018 10:04:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ECD182087A for ; Mon, 12 Nov 2018 10:04:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ECD182087A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728538AbeKLT4f (ORCPT ); Mon, 12 Nov 2018 14:56:35 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:37470 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726443AbeKLT4e (ORCPT ); Mon, 12 Nov 2018 14:56:34 -0500 Received: by mail-io1-f72.google.com with SMTP id w26-v6so9484623ioa.4 for ; Mon, 12 Nov 2018 02:04:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=NouYNZVQ4av7xQT3I70WetY+myCq/ZkiGAUGyQNC+Oo=; b=ZrITnWQ7WMpX7AW/f+c9epnZaBbCvc8SgRIl4N9mXdOqY90KcUGZY7j6pKlLuG/7jd w+OYgxm68j+WRTCDNU4YAeZjPD/d98e6UuM7+DEMQpTImasqLwj+j1J/L1cy0JRCCjlD gjTEtAN6LJvvZgiVbkX/29C078mPrlTt+bOtzTBWixCYWUxWWhxpzrAguhS8xKKcnkbZ 9JAXSwEHzwetpy1CLisG5z1/KqFGjzF14+rnV7yaq2qB7yO6yKDoER1NvBDvvq1Kd5rr nMIjCZXqXAiPnYIxwQ0eczcqNkhep+cb6u7Uup/Cp2A96XpEGezpLPqEkfbikMZ8UI2v zpww== X-Gm-Message-State: AGRZ1gL3yE2BOEbhMGRhvsn4pgz9WI9t4qXYfr/1UkWJav3xSa5vo6xc NKoET+/RDx97pg3FlvTlR5ySWEA2S+Kj/lnS+QDD1DAzcg+a X-Google-Smtp-Source: AJdET5feFZFv/bQJPNP/mKZf8DLRxDWTP6cKiBKs1j17l1pN3S7u5TaA+7k3v+c4PNergq21rEAyNBVqMryEOKIYdsckM+sJbEMc MIME-Version: 1.0 X-Received: by 2002:a02:9952:: with SMTP id d18-v6mr171064jak.19.1542017043743; Mon, 12 Nov 2018 02:04:03 -0800 (PST) Date: Mon, 12 Nov 2018 02:04:03 -0800 In-Reply-To: <00000000000065a79f057a095de8@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000214dc1057a74d206@google.com> Subject: Re: WARNING in usb_submit_urb (4) From: syzbot To: Thinh.Nguyen@synopsys.com, felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, shuah@kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: e12e00e388de Merge tag 'kbuild-fixes-v4.20' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100e4ef5400000 kernel config: https://syzkaller.appspot.com/x/.config?x=8f215f21f041a0d7 dashboard link: https://syzkaller.appspot.com/bug?extid=7634edaea4d0b341c625 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ce6fbd400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+7634edaea4d0b341c625@syzkaller.appspotmail.com hub 3-0:1.0: 8 ports detected hub 3-0:1.0: USB hub found hub 3-0:1.0: 8 ports detected ------------[ cut here ]------------ URB 000000005e43faa5 submitted while active WARNING: CPU: 0 PID: 6240 at drivers/usb/core/urb.c:363 usb_submit_urb+0x11cf/0x14e0 drivers/usb/core/urb.c:363 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6240 Comm: kworker/0:1 Not tainted 4.20.0-rc1+ #332 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient hub_init_func2 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 panic+0x2ad/0x55c kernel/panic.c:188 __warn.cold.8+0x20/0x45 kernel/panic.c:540 report_bug+0x254/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969 RIP: 0010:usb_submit_urb+0x11cf/0x14e0 drivers/usb/core/urb.c:363 Code: ee e8 95 62 7b fc 45 84 ed 0f 85 e2 f6 ff ff e8 b7 61 7b fc 48 89 de 48 c7 c7 a0 32 92 88 c6 05 d4 45 0d 05 01 e8 11 c5 44 fc <0f> 0b e9 c0 f6 ff ff c7 45 a0 01 00 00 00 e9 65 f7 ff ff 41 bc ed RSP: 0018:ffff8881c1f974f0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8881c83bb800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8165e7e5 RDI: 0000000000000005 RBP: ffff8881c1f97560 R08: ffff8881bc062040 R09: ffffed103b5c3ef8 R10: ffffed103b5c3ef8 R11: ffff8881dae1f7c7 R12: 00000000fffffff0 R13: 0000000000000000 R14: 0000000000000009 R15: ffff8881c1f976f8 hub_activate+0xcab/0x1940 drivers/usb/core/hub.c:1215 hub_init_func2+0x1e/0x30 drivers/usb/core/hub.c:1240 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..