ax88179_178a 1-1:6.5 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 ax88179_178a 1-1:6.5 eth1: register 'ax88179_178a' at usb-dummy_hcd.0-1, Belkin USB Ethernet Adapter, 8e:64:75:16:c6:46 usb 1-1: USB disconnect, device number 47 Unable to handle kernel paging request at virtual address dfff800000000002 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000002] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4084 Comm: kworker/0:8 Not tainted 5.15.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: usb_hub_wq hub_event pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ax88179_disconnect+0x70/0xb8 drivers/net/usb/ax88179_178a.c:531 lr : ax88179_disconnect+0x48/0xb8 drivers/net/usb/ax88179_178a.c:530 sp : ffff80001cc073b0 x29: ffff80001cc073b0 x28: ffff800015ff12e0 x27: ffff0000ebb52000 x26: 0000000000000001 x25: ffff0000ebb520a8 x24: ffff0000ebc5c030 x23: ffff800015ff1248 x22: ffff800015ff11b0 x21: dfff800000000000 x20: 0000000000000010 x19: ffff0000ebc5c000 x18: ffff80001cc06fc0 x17: 0000000000000002 x16: ffff80000824c4dc x15: 000000000001f276 x14: ffff800016f51500 x13: dfff800000000000 x12: 0000000000040000 x11: 0000000000011f5a x10: ffff800026769000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008045860 x2 : 0000000000000006 x1 : ffff800011adab60 x0 : ffff0000ebc5c000 Call trace: ax88179_disconnect+0x70/0xb8 drivers/net/usb/ax88179_178a.c:531 usb_unbind_interface+0x1a4/0x758 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1229 [inline] device_release_driver_internal+0x464/0x6ac drivers/base/dd.c:1262 device_release_driver+0x28/0x38 drivers/base/dd.c:1285 bus_remove_device+0x298/0x38c drivers/base/bus.c:529 device_del+0x57c/0x9b4 drivers/base/core.c:3582 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1414 usb_disconnect+0x290/0x7e8 drivers/usb/core/hub.c:2239 hub_port_connect drivers/usb/core/hub.c:5281 [inline] hub_port_connect_change drivers/usb/core/hub.c:5577 [inline] port_event drivers/usb/core/hub.c:5723 [inline] hub_event+0x1718/0x47d4 drivers/usb/core/hub.c:5805 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 process_scheduled_works kernel/workqueue.c:2373 [inline] worker_thread+0xb88/0x1034 kernel/workqueue.c:2459 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Code: f9400288 91004114 d343fe88 12000a89 (38f56908) ---[ end trace 481da3bd26615232 ]--- ---------------- Code disassembly (best guess): 0: f9400288 ldr x8, [x20] 4: 91004114 add x20, x8, #0x10 8: d343fe88 lsr x8, x20, #3 c: 12000a89 and w9, w20, #0x7 * 10: 38f56908 ldrsb w8, [x8, x21] <-- trapping instruction