=====================================================
BUG: KMSAN: uninit-value in mii_nway_restart+0x11b/0x1e0 drivers/net/mii.c:465
 mii_nway_restart+0x11b/0x1e0 drivers/net/mii.c:465
 dm9601_bind+0xa10/0xb30 drivers/net/usb/dm9601.c:431
 usbnet_probe+0x1011/0x3f20 drivers/net/usb/usbnet.c:1750
 usb_probe_interface+0xc75/0x1210 drivers/usb/core/driver.c:396
 really_probe+0x506/0xf40 drivers/base/dd.c:658
 __driver_probe_device+0x2a7/0x5d0 drivers/base/dd.c:800
 driver_probe_device+0x72/0x7b0 drivers/base/dd.c:830
 __device_attach_driver+0x55a/0x8f0 drivers/base/dd.c:958
 bus_for_each_drv+0x3ff/0x620 drivers/base/bus.c:457
 __device_attach+0x3bd/0x640 drivers/base/dd.c:1030
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1079
 bus_probe_device+0x3d8/0x5a0 drivers/base/bus.c:532
 device_add+0x1b6a/0x24b0 drivers/base/core.c:3625
 usb_set_configuration+0x31c9/0x38c0 drivers/usb/core/message.c:2211
 usb_generic_driver_probe+0x109/0x2a0 drivers/usb/core/generic.c:238
 usb_probe_device+0x290/0x4a0 drivers/usb/core/driver.c:293
 really_probe+0x506/0xf40 drivers/base/dd.c:658
 __driver_probe_device+0x2a7/0x5d0 drivers/base/dd.c:800
 driver_probe_device+0x72/0x7b0 drivers/base/dd.c:830
 __device_attach_driver+0x55a/0x8f0 drivers/base/dd.c:958
 bus_for_each_drv+0x3ff/0x620 drivers/base/bus.c:457
 __device_attach+0x3bd/0x640 drivers/base/dd.c:1030
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1079
 bus_probe_device+0x3d8/0x5a0 drivers/base/bus.c:532
 device_add+0x1b6a/0x24b0 drivers/base/core.c:3625
 usb_new_device+0x15f6/0x22f0 drivers/usb/core/hub.c:2575
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 port_event drivers/usb/core/hub.c:5711 [inline]
 hub_event+0x577b/0x78a0 drivers/usb/core/hub.c:5793
 process_one_work+0xb0d/0x1410 kernel/workqueue.c:2405
 worker_thread+0x107e/0x1d60 kernel/workqueue.c:2552
 kthread+0x3e8/0x540 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Local variable res created at:
 dm9601_mdio_read+0x3d/0xd0 drivers/net/usb/dm9601.c:226
 mii_nway_restart+0x88/0x1e0 drivers/net/mii.c:463

CPU: 1 PID: 4683 Comm: kworker/1:3 Not tainted 6.4.0-rc6-syzkaller-g7cccf3be6dcb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: usb_hub_wq hub_event
=====================================================