asix 3-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71
asix 3-1:0.0 (unnamed net_device) (uninitialized): Error reading Medium Status register: ffffffb9
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in drivers/net/usb/asix_devices.c:679:27
shift exponent 208 is too large for 64-bit type 'unsigned long'
CPU: 1 UID: 0 PID: 3078 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 dump_stack_lvl+0xa2/0xf0 lib/dump_stack.c:120
 ubsan_epilogue+0x5/0x30 lib/ubsan.c:233
 __ubsan_handle_shift_out_of_bounds+0x202/0x210 lib/ubsan.c:494
 ax88772_init_mdio drivers/net/usb/asix_devices.c:679 [inline]
 ax88772_bind+0x491/0x4c0 drivers/net/usb/asix_devices.c:910
 usbnet_probe+0x46e/0xae0 drivers/net/usb/usbnet.c:1781
 usb_probe_interface+0x172/0x3a0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x138/0x450 drivers/base/dd.c:659
 __driver_probe_device+0x72/0xf0 drivers/base/dd.c:801
 driver_probe_device+0x1d/0x1b0 drivers/base/dd.c:831
 __device_attach_driver+0x135/0x1b0 drivers/base/dd.c:959
 bus_for_each_drv+0x113/0x170 drivers/base/bus.c:462
 __device_attach+0xc3/0x190 drivers/base/dd.c:1031
 bus_probe_device+0x9e/0x120 drivers/base/bus.c:537
 device_add+0x255/0x440 drivers/base/core.c:3689
 usb_set_configuration+0x969/0xb40 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x2a/0x80 drivers/usb/core/generic.c:250
 usb_probe_device+0x71/0x120 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x138/0x450 drivers/base/dd.c:659
 __driver_probe_device+0x72/0xf0 drivers/base/dd.c:801
 driver_probe_device+0x1d/0x1b0 drivers/base/dd.c:831
 __device_attach_driver+0x135/0x1b0 drivers/base/dd.c:959
 bus_for_each_drv+0x113/0x170 drivers/base/bus.c:462
 __device_attach+0xc3/0x190 drivers/base/dd.c:1031
 bus_probe_device+0x9e/0x120 drivers/base/bus.c:537
 device_add+0x255/0x440 drivers/base/core.c:3689
 usb_new_device+0x302/0x600 drivers/usb/core/hub.c:2694
 hub_port_connect drivers/usb/core/hub.c:5566 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x116c/0x1b00 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0x2e4/0x5e0 kernel/workqueue.c:3319
 worker_thread+0x20a/0x2f0 kernel/workqueue.c:3400
 kthread+0x203/0x230 kernel/kthread.c:463
 ret_from_fork+0xa1/0x190 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
---[ end trace ]---