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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 738ACC2BCA1 for ; Fri, 7 Jun 2019 19:13:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 56D5D208C3 for ; Fri, 7 Jun 2019 19:13:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729677AbfFGTNH (ORCPT ); Fri, 7 Jun 2019 15:13:07 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:38870 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729456AbfFGTNG (ORCPT ); Fri, 7 Jun 2019 15:13:06 -0400 Received: by mail-it1-f197.google.com with SMTP id j83so2630688ita.3 for ; Fri, 07 Jun 2019 12:13:06 -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=cyqCrDVt2dXVqI86R5kiLgCbIofZNHXYbbR1FIOGENY=; b=Phx4bRZU4j1zJJMmrDa3Oinizc3NNI8D9wgOCulv+1BkSruAftXMiT8+3Z1dLyZuM2 09RuQ/yKK2amTcWpBkLe5rdc7Un3JZLZJz1gE4WHr8pCGiPM6PvLPVbHTjIErg9KTutE PA0Z8gC5dK6O4/rqOz1CXvxUFx7aEcY71j5J7Sg2qolxjQ1DFC7dmG7j/BXJCv4tGeOt sVftKEps82VYpZJQNrGH7xTAx4G/KlWVZsk5sbnjePjlSiD2JuBGZKyiU9aiHjsB177G Ew4OUv2EC6Akdpnl3a5fEEVP6PS9H9qBaouwf7ux0MGzPAtoz8Gj88NziSupz/dX9Uzu bLyQ== X-Gm-Message-State: APjAAAWcEs+AsNFL2cAtEfVI751VfyVCWIKVJCdi0uBsjob/LTIbfcEY zg1cpk131Q+a+EKVji3sLApaszs+jKJMJeQbKDKl6kwGeDLC X-Google-Smtp-Source: APXvYqx/BdEP9lMOAedJ3yRv8lpTdqGerTLV44sx8ug8pFLGAgLn7Qp6CZoPRXvcthgfYfh0AMdPOBh/Q8emJuHLVG9uCw6Qhx3o MIME-Version: 1.0 X-Received: by 2002:a5d:860e:: with SMTP id f14mr1413298iol.242.1559934786049; Fri, 07 Jun 2019 12:13:06 -0700 (PDT) Date: Fri, 07 Jun 2019 12:13:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cba2b6058ac09eeb@google.com> Subject: KMSAN: uninit-value in ax88178_bind From: syzbot To: davem@davemloft.net, glider@google.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, lynxis@fe80.eu, marcel.ziswiler@toradex.com, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, yang.wei9@zte.com.cn, zhang.run@zte.com.cn Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: f75e4cfe kmsan: use kmsan_handle_urb() in urb.c git tree: kmsan console output: https://syzkaller.appspot.com/x/log.txt?x=10b2622ea00000 kernel config: https://syzkaller.appspot.com/x/.config?x=602468164ccdc30a dashboard link: https://syzkaller.appspot.com/bug?extid=abd25d675d47f23f188c compiler: clang version 9.0.0 (/home/glider/llvm/clang 06d00afa61eef8f7f501ebdb4e8612ea43ec2d78) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+abd25d675d47f23f188c@syzkaller.appspotmail.com usb 2-1: Using ep0 maxpacket: 8 usb 2-1: config 0 has an invalid interface number: 81 but max is 0 usb 2-1: config 0 has no interface number 0 usb 2-1: New USB device found, idVendor=04bb, idProduct=0930, bcdDevice= f.22 usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 2-1: config 0 descriptor?? ================================================================== BUG: KMSAN: uninit-value in is_valid_ether_addr include/linux/etherdevice.h:200 [inline] BUG: KMSAN: uninit-value in asix_set_netdev_dev_addr drivers/net/usb/asix_devices.c:73 [inline] BUG: KMSAN: uninit-value in ax88178_bind+0x635/0xad0 drivers/net/usb/asix_devices.c:1087 CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0+ #1 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+0x191/0x1f0 lib/dump_stack.c:113 kmsan_report+0x130/0x2a0 mm/kmsan/kmsan.c:622 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:310 is_valid_ether_addr include/linux/etherdevice.h:200 [inline] asix_set_netdev_dev_addr drivers/net/usb/asix_devices.c:73 [inline] ax88178_bind+0x635/0xad0 drivers/net/usb/asix_devices.c:1087 usbnet_probe+0x10f5/0x3940 drivers/net/usb/usbnet.c:1728 usb_probe_interface+0xd66/0x1320 drivers/usb/core/driver.c:361 really_probe+0xdae/0x1d80 drivers/base/dd.c:513 driver_probe_device+0x1b3/0x4f0 drivers/base/dd.c:671 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:778 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x454/0x730 drivers/base/dd.c:844 device_initial_probe+0x4a/0x60 drivers/base/dd.c:891 bus_probe_device+0x137/0x390 drivers/base/bus.c:514 device_add+0x288d/0x30e0 drivers/base/core.c:2106 usb_set_configuration+0x30dc/0x3750 drivers/usb/core/message.c:2027 generic_probe+0xe7/0x280 drivers/usb/core/generic.c:210 usb_probe_device+0x14c/0x200 drivers/usb/core/driver.c:266 really_probe+0xdae/0x1d80 drivers/base/dd.c:513 driver_probe_device+0x1b3/0x4f0 drivers/base/dd.c:671 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:778 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x454/0x730 drivers/base/dd.c:844 device_initial_probe+0x4a/0x60 drivers/base/dd.c:891 bus_probe_device+0x137/0x390 drivers/base/bus.c:514 device_add+0x288d/0x30e0 drivers/base/core.c:2106 usb_new_device+0x23e5/0x2ff0 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x48d1/0x7290 drivers/usb/core/hub.c:5432 process_one_work+0x1572/0x1f00 kernel/workqueue.c:2269 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415 kthread+0x4b5/0x4f0 kernel/kthread.c:254 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355 Local variable description: ----buf@ax88178_bind Variable was created at: ax88178_bind+0x60/0xad0 drivers/net/usb/asix_devices.c:1076 usbnet_probe+0x10f5/0x3940 drivers/net/usb/usbnet.c:1728 ================================================================== --- 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.