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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 2A0F8C3A59E for ; Wed, 21 Aug 2019 12:58:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0125C22D6D for ; Wed, 21 Aug 2019 12:58:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728720AbfHUM6J (ORCPT ); Wed, 21 Aug 2019 08:58:09 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:40611 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728601AbfHUM6I (ORCPT ); Wed, 21 Aug 2019 08:58:08 -0400 Received: by mail-io1-f71.google.com with SMTP id v16so2544474ioh.7 for ; Wed, 21 Aug 2019 05:58:07 -0700 (PDT) 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:message-id:subject:from:to; bh=AgzeOjxACc9EEUnE8EgXlFi6Uhugev5g9gb+lwN4zbM=; b=ujM7TIlTxPXSao+mXZtVmaHl4fo2/gN2vYZLRr5rDyfpp5PQ3ZF/L/uwZOGhx2JIY6 gJ4HLCKjEfzB3oUDoXfjodZTCOyMYD0HVtr0wc5ZZ4NKAcaTztaNZ2oKYnglkmoEuUyJ kHkU9Z2TbLPG5bbVfJ9eZYG1rx8KGTKUH7f8bJ0QnlAfv7tErHSABm8G/k9a8i3iaoIT LcgLBNXpgINsLf345SOFsSCKiOWsk5Ozp3sTZmJUfnkC/twJYBQgIP3+TzOMri3ritM9 FadbugPWA/f+RHVflcO+DUKYKchQ255TXVWBTYy9Ho6dpt9Kt7eG2YTi0yeUP5dFNU2w 2lfA== X-Gm-Message-State: APjAAAVc0xUqDJEDZIo+4x6J8G0lFVDcydq+3166ICKoTGIPuCTP9QVy SWvigt//XtRc0G71wGn+x7216CL09zoWRO7ZSATs+USAqO9v X-Google-Smtp-Source: APXvYqxK48tqrTuJn1Si5ESQm03FyItN5pjtoYJZbGz5BUgto8WoVMBVpLFf++v2JRIih3QEE23r+XxLCVVGTITiFMp2vHt5pBdK MIME-Version: 1.0 X-Received: by 2002:a02:390c:: with SMTP id l12mr1224613jaa.76.1566392287025; Wed, 21 Aug 2019 05:58:07 -0700 (PDT) Date: Wed, 21 Aug 2019 05:58:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d8e41d0590a01fc7@google.com> Subject: WARNING in flexcop_usb_probe/usb_submit_urb From: syzbot To: andreyknvl@google.com, gregkh@linuxfoundation.org, gustavo@embeddedor.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, 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 Hello, syzbot found the following crash on: HEAD commit: eea39f24 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=151c664c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e dashboard link: https://syzkaller.appspot.com/bug?extid=26a8e8c838ca7937dc9e compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16c6042e600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d8d64c600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+26a8e8c838ca7937dc9e@syzkaller.appspotmail.com lgdt330x 0-0059: Demod loaded for LGDT3303 chip tuner-simple 0-0061: creating new instance tuner-simple 0-0061: type set to 64 (LG TDVS-H06xF) b2c2-flexcop: found 'LG Electronics LGDT3303 VSB/QAM Frontend' . usb 1-1: DVB: registering adapter 0 frontend 0 (LG Electronics LGDT3303 VSB/QAM Frontend)... b2c2-flexcop: initialization of 'Air2PC/AirStar 2 ATSC 3rd generation (HD5000)' at the 'USB' bus controlled by a 'FlexCopIII' complete ------------[ cut here ]------------ usb 1-1: BOGUS urb xfer, pipe 0 != type 1 WARNING: CPU: 0 PID: 12 at drivers/usb/core/urb.c:477 usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc5+ #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477 Code: 4d 85 ed 74 2c e8 88 ba ef fd 4c 89 f7 e8 70 bf 1c ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 00 69 18 86 e8 6d a0 c5 fd <0f> 0b e9 20 f4 ff ff e8 5c ba ef fd 4c 89 f2 48 b8 00 00 00 00 00 RSP: 0018:ffff8881da20f278 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103b441e41 RBP: ffff8881d530c300 R08: ffff8881da1f9800 R09: ffffed103b645d58 R10: ffffed103b645d57 R11: ffff8881db22eabf R12: 0000000000000000 R13: ffff8881cf2f0930 R14: ffff8881d69791a0 R15: ffff8881d5f5f780 flexcop_usb_transfer_init drivers/media/usb/b2c2/flexcop-usb.c:484 [inline] flexcop_usb_probe.cold+0x5c0/0x7bd drivers/media/usb/b2c2/flexcop-usb.c:575 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2165 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2165 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches