netdev - [syzbot] KMSAN: uninit-value in ax88772a_hw

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Message-ID: <0000000000005fb57e05d1620da1@google.com>
Date:   Mon, 22 Nov 2021 07:12:24 -0800
From:   syzbot <syzbot+8d179821571093c5f928@...kaller.appspotmail.com>
To:     andrew@...n.ch, davem@...emloft.net, glider@...gle.com,
        kuba@...nel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux@...pel-privat.de,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] KMSAN: uninit-value in ax88772a_hw_reset

Hello,

syzbot found the following issue on:

HEAD commit:    412af9cd936d ioremap.c: move an #include around
git tree:       https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=136fb126b00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2d142cdf4204061
dashboard link: https://syzkaller.appspot.com/bug?extid=8d179821571093c5f928
compiler:       clang version 14.0.0 (git@...hub.com:llvm/llvm-project.git 0996585c8e3b3d409494eb5f1cad714b9e1f7fb5), 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+8d179821571093c5f928@...kaller.appspotmail.com

asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0016: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable hardware MII access
=====================================================
BUG: KMSAN: uninit-value in ax88772a_hw_reset+0xc2a/0x12c0 drivers/net/usb/asix_devices.c:523
 ax88772a_hw_reset+0xc2a/0x12c0 drivers/net/usb/asix_devices.c:523
 ax88772_bind+0x838/0x19b0 drivers/net/usb/asix_devices.c:762
 usbnet_probe+0x1285/0x40c0 drivers/net/usb/usbnet.c:1745
 usb_probe_interface+0xf15/0x1530 drivers/usb/core/driver.c:396
 really_probe+0x66e/0x1510 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
 device_add+0x1d46/0x2400 drivers/base/core.c:3396
 usb_set_configuration+0x389f/0x3ee0 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+0x66e/0x1510 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
 device_add+0x1d46/0x2400 drivers/base/core.c:3396
 usb_new_device+0x1b9a/0x2960 drivers/usb/core/hub.c:2563
 hub_port_connect drivers/usb/core/hub.c:5348 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
 port_event drivers/usb/core/hub.c:5634 [inline]
 hub_event+0x57cf/0x8690 drivers/usb/core/hub.c:5716
 process_one_work+0xdc7/0x1760 kernel/workqueue.c:2297
 worker_thread+0x1101/0x22b0 kernel/workqueue.c:2444
 kthread+0x66b/0x780 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

Local variable smsr.i created at:
 asix_mdio_read_nopm+0xb7/0xab0 drivers/net/usb/asix_common.c:574
 ax88772a_hw_reset+0x822/0x12c0 drivers/net/usb/asix_devices.c:511
=====================================================
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0014: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable hardware MII access
=====================================================
BUG: KMSAN: uninit-value in ax88772a_hw_reset+0xc37/0x12c0 drivers/net/usb/asix_devices.c:527
 ax88772a_hw_reset+0xc37/0x12c0 drivers/net/usb/asix_devices.c:527
 ax88772_bind+0x838/0x19b0 drivers/net/usb/asix_devices.c:762
 usbnet_probe+0x1285/0x40c0 drivers/net/usb/usbnet.c:1745
 usb_probe_interface+0xf15/0x1530 drivers/usb/core/driver.c:396
 really_probe+0x66e/0x1510 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
 device_add+0x1d46/0x2400 drivers/base/core.c:3396
 usb_set_configuration+0x389f/0x3ee0 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+0x66e/0x1510 drivers/base/dd.c:596
 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
 driver_probe_device drivers/base/dd.c:781 [inline]
 __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427
 __device_attach+0x593/0x8e0 drivers/base/dd.c:969
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016
 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
 device_add+0x1d46/0x2400 drivers/base/core.c:3396
 usb_new_device+0x1b9a/0x2960 drivers/usb/core/hub.c:2563
 hub_port_connect drivers/usb/core/hub.c:5348 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
 port_event drivers/usb/core/hub.c:5634 [inline]
 hub_event+0x57cf/0x8690 drivers/usb/core/hub.c:5716
 process_one_work+0xdc7/0x1760 kernel/workqueue.c:2297
 worker_thread+0x1101/0x22b0 kernel/workqueue.c:2444
 kthread+0x66b/0x780 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

Local variable smsr.i created at:
 asix_mdio_read_nopm+0xb7/0xab0 drivers/net/usb/asix_common.c:574
 ax88772a_hw_reset+0x8af/0x12c0 drivers/net/usb/asix_devices.c:513
=====================================================
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71
asix 4-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access


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