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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03BF1C4332F for ; Tue, 15 Mar 2022 15:26:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349582AbiCOP1h (ORCPT ); Tue, 15 Mar 2022 11:27:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240296AbiCOP1g (ORCPT ); Tue, 15 Mar 2022 11:27:36 -0400 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A271506CB for ; Tue, 15 Mar 2022 08:26:24 -0700 (PDT) Received: by mail-io1-f72.google.com with SMTP id y3-20020a056602178300b00645d25c30c1so14726663iox.6 for ; Tue, 15 Mar 2022 08:26:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=vdTQDBC3Jklh96eo2Y2NGd8ppWKF8RaZ4ErDmGq8gGk=; b=6zQKREgydPIZy5xQiFx3sfd8qmftVgfZrtVFAUxIox4hU6Re012GwoM9G1hRZgUMjk ZO2pWeqORvVBpnhL0lJJNkW1lCziTGV8R/tPRFqEZJWbAXKdFRc2R//h3kBhcFEjr8gU tWa8oeCrrsffcnNCJwNnlCGVrKkcY8gYPytTHMdX4g70iLL1dnnMOxaO2RIlwxRqlcTl qi8HOOwWxoDJ0lCLMXwb493L+ZDuIpr3hnmNWW2GFxyUWh26MXa/mm6Kc+z/sddtKkp4 yWgXdDelRnVnEYlTz0C7u3p/dp8lLGy0u8pQSHLS3LKXM0JnAJLjs+y+MfMRRwNRZrwF YakA== X-Gm-Message-State: AOAM533PEIxdAQsjzKM7QVupSINtJmf6q6RBU+JKA3/UqTCmlTf+t2Ie g3NwNoxaKNkIZ42e06s2n7dbPFh5HPoWh5FlQHI5ESdVEhvp X-Google-Smtp-Source: ABdhPJxRlEiUerv7gDBygAznUFLNS8dEjNh8w4wUD1854dHWrJtxtiWpX1Ofn8b9ntKMGI5XtebtNVYiHhzz9+6TcpL8z7tKBfdj MIME-Version: 1.0 X-Received: by 2002:a92:6c09:0:b0:2c7:a105:d426 with SMTP id h9-20020a926c09000000b002c7a105d426mr7213685ilc.111.1647357983549; Tue, 15 Mar 2022 08:26:23 -0700 (PDT) Date: Tue, 15 Mar 2022 08:26:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006d718005da436bcc@google.com> Subject: [syzbot] KMSAN: uninit-value in asix_mdio_write_nopm From: syzbot To: andrew@lunn.ch, davem@davemloft.net, glider@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux@rempel-privat.de, netdev@vger.kernel.org, paskripkin@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 724946410067 x86: kmsan: enable KMSAN builds for x86 git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=151d8ea9700000 kernel config: https://syzkaller.appspot.com/x/.config?x=28718f555f258365 dashboard link: https://syzkaller.appspot.com/bug?extid=737f7d251877e50f3dce compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+737f7d251877e50f3dce@syzkaller.appspotmail.com usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 6-1: Product: syz usb 6-1: Manufacturer: syz usb 6-1: SerialNumber: syz usb 6-1: config 0 descriptor?? asix 6-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 ===================================================== BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:84 [inline] BUG: KMSAN: uninit-value in asix_mdio_write_nopm+0x556/0x9d0 drivers/net/usb/asix_common.c:605 asix_check_host_enable drivers/net/usb/asix_common.c:84 [inline] asix_mdio_write_nopm+0x556/0x9d0 drivers/net/usb/asix_common.c:605 ax88772a_hw_reset+0xa67/0x12e0 drivers/net/usb/asix_devices.c:524 ax88772_bind+0x750/0x1770 drivers/net/usb/asix_devices.c:762 usbnet_probe+0x1251/0x4160 drivers/net/usb/usbnet.c:1747 usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396 really_probe+0x653/0x14b0 drivers/base/dd.c:596 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752 driver_probe_device drivers/base/dd.c:782 [inline] __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 __device_attach+0x593/0x8e0 drivers/base/dd.c:970 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 device_add+0x1fff/0x26e0 drivers/base/core.c:3405 usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293 really_probe+0x653/0x14b0 drivers/base/dd.c:596 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752 driver_probe_device drivers/base/dd.c:782 [inline] __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899 bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 __device_attach+0x593/0x8e0 drivers/base/dd.c:970 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 device_add+0x1fff/0x26e0 drivers/base/core.c:3405 usb_new_device+0x1b8e/0x2950 drivers/usb/core/hub.c:2566 hub_port_connect drivers/usb/core/hub.c:5358 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5660 [inline] hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5742 process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307 worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454 kthread+0x3c7/0x500 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 Local variable smsr.i created at: asix_mdio_write_nopm+0xe7/0x9d0 drivers/net/usb/asix_common.c:605 ax88772a_hw_reset+0xa67/0x12e0 drivers/net/usb/asix_devices.c:524 CPU: 1 PID: 3515 Comm: kworker/1:3 Not tainted 5.17.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event ===================================================== --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.