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 D34BFC3A5A1 for ; Thu, 22 Aug 2019 14:28:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B066721726 for ; Thu, 22 Aug 2019 14:28:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388442AbfHVO2I (ORCPT ); Thu, 22 Aug 2019 10:28:08 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:39043 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725873AbfHVO2I (ORCPT ); Thu, 22 Aug 2019 10:28:08 -0400 Received: by mail-io1-f70.google.com with SMTP id g12so6577637iok.6 for ; Thu, 22 Aug 2019 07:28:07 -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=5NvkY5It9Uka5k6hXhl6v+ALtKFYcEQyT3YtILLNu4M=; b=CesWi5eMSVfExhhMq2/7VzvAdFwAxB7rFU7ZZZOBsXJqlJjyx9EH43CRYtt0f93t4k l0nnkUzLgo85BABJTFjwYz1i+3Kk//Zgrxj6JxMMA3dXC/OSKZdSsqpe5qACyJ/aczjI eyRmmsJSe+1Lpmx/izZmtPibe8/RSGJNwfrPrN7YpbUpnGcvvPFxhkB+oVpTwHWkonDl h0Wg66DtotlbwmCbNX9UBo+OwNDaKCGooKxDNEHV7DEY0J8rpUkE20LrZzhb+DpeoteK T45jMi6YVrDhq7MuhPXm32ECpLg8n4AtaT7ptDsv/PpVYjQaz3SmxgRAVX238TvhmR3k eHaA== X-Gm-Message-State: APjAAAXWfQDPQgv5/wsdgfYrEBe93StcT16f83HBnfhBOZP6tiWY0v2P Kwy8T2UUXUTVIQXxF/LuTzh8njMIHBw081yp7tcQ6pFV+m+T X-Google-Smtp-Source: APXvYqzN6ymuNx0ogqNZhxC7kEt34nHfmwQ5+feN2ljRuL3CTyxxSGlk5zpjneuzyG3g7Juk+k7MRQ1vNqGK43Npb73Whw71s3Ml MIME-Version: 1.0 X-Received: by 2002:a02:cc6c:: with SMTP id j12mr409661jaq.29.1566484087115; Thu, 22 Aug 2019 07:28:07 -0700 (PDT) Date: Thu, 22 Aug 2019 07:28:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008f1a550590b57f9a@google.com> Subject: WARNING in r871xu_dev_remove From: syzbot To: Larry.Finger@lwfinger.net, andreyknvl@google.com, devel@driverdev.osuosl.org, florian.c.schilhabel@googlemail.com, gregkh@linuxfoundation.org, himadri18.07@gmail.com, kai.heng.feng@canonical.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux.dkm@gmail.com, straube.linux@gmail.com, 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=163ae012600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e dashboard link: https://syzkaller.appspot.com/bug?extid=80899a8a8efe8968cde7 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1739cb0e600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154fcc2e600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+80899a8a8efe8968cde7@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 83 at net/core/dev.c:8167 rollback_registered_many.cold+0x41/0x1bc net/core/dev.c:8167 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 83 Comm: kworker/1:2 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:rollback_registered_many.cold+0x41/0x1bc net/core/dev.c:8167 Code: ff e8 c7 26 90 fc 48 c7 c7 40 ec 63 86 e8 24 c8 7a fc 0f 0b e9 93 be ff ff e8 af 26 90 fc 48 c7 c7 40 ec 63 86 e8 0c c8 7a fc <0f> 0b 4c 89 e7 e8 f9 12 34 fd 31 ff 41 89 c4 89 c6 e8 bd 27 90 fc RSP: 0018:ffff8881d938f6a8 EFLAGS: 00010286 RAX: 0000000000000024 RBX: ffff8881d2a10000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81288cfd RDI: ffffed103b271ec7 RBP: ffff8881d938f7d8 R08: 0000000000000024 R09: fffffbfff11ad794 R10: fffffbfff11ad793 R11: ffffffff88d6bc9f R12: ffff8881d2a10070 R13: ffff8881d938f768 R14: dffffc0000000000 R15: 0000000000000000 rollback_registered+0xf2/0x1c0 net/core/dev.c:8243 unregister_netdevice_queue net/core/dev.c:9290 [inline] unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:9283 unregister_netdevice include/linux/netdevice.h:2631 [inline] unregister_netdev+0x18/0x20 net/core/dev.c:9331 r871xu_dev_remove+0xe2/0x215 drivers/staging/rtl8712/usb_intf.c:604 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1134 [inline] device_release_driver_internal+0x42f/0x500 drivers/base/dd.c:1165 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556 device_del+0x420/0xb10 drivers/base/core.c:2339 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 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