usb 1-1: Using ep0 maxpacket: 8
usb 1-1: read over firmware interface failed: -71
usb 1-1: reset high-speed USB device number 2 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 8
WARNING: CPU: 0 PID: 12 at drivers/net/wireless/zydas/zd1211rw/zd_mac.c:226 zd_mac_clear+0xab/0xe0 /drivers/net/wireless/zydas/zd1211rw/zd_mac.c:226
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack /lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e /lib/dump_stack.c:113
 panic+0x292/0x6c9 /kernel/panic.c:219
 __warn.cold+0x20/0x4b /kernel/panic.c:576
 report_bug+0x262/0x2a0 /lib/bug.c:186
 fixup_bug /arch/x86/kernel/traps.c:179 [inline]
 fixup_bug /arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x12b/0x1e0 /arch/x86/kernel/traps.c:272
 do_invalid_op+0x32/0x40 /arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 /arch/x86/entry/entry_64.S:986
RIP: 0010:zd_mac_clear+0xab/0xe0 /drivers/net/wireless/zydas/zd1211rw/zd_mac.c:226
Code: e8 2a ea 0e fe 48 8d bb f8 2b 00 00 be ff ff ff ff e8 e9 2a f6 fd 31 ff 89 c3 89 c6 e8 7e eb 0e fe 85 db 75 d4 e8 05 ea 0e fe <0f> 0b 5b 5d e9 fc e9 0e fe 48 c7 c7 74 46 65 87 e8 a0 da 34 fe eb
RSP: 0018:ffff8881d9e0f308 EFLAGS: 00010293
RAX: ffff8881d9df9800 RBX: 0000000000000000 RCX: ffffffff832df1a2
RDX: 0000000000000000 RSI: ffffffff832df1ab RDI: 0000000000000005
RBP: 0000000000000001 R08: ffff8881d9df9800 R09: ffffed1039e0ba0b
R10: ffffed1039e0ba0a R11: ffff8881cf05d057 R12: 00000000ffffffb9
R13: ffff8881cf058b20 R14: ffff8881d0933370 R15: ffffffff85f22cb8
 probe+0x254/0x590 /drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1409
 usb_probe_interface+0x305/0x7a0 /drivers/usb/core/driver.c:361
 really_probe+0x281/0x660 /drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454
 __device_attach+0x217/0x360 /drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514
 device_add+0xae6/0x16f0 /drivers/base/core.c:2111
 usb_set_configuration+0xdf6/0x1670 /drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 /drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 /drivers/usb/core/driver.c:266
 really_probe+0x281/0x660 /drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454
 __device_attach+0x217/0x360 /drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514
 device_add+0xae6/0x16f0 /drivers/base/core.c:2111
 usb_new_device.cold+0x6a4/0xe61 /drivers/usb/core/hub.c:2536
 hub_port_connect /drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change /drivers/usb/core/hub.c:5213 [inline]
 port_event /drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1abd/0x3550 /drivers/usb/core/hub.c:5441
 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415
 kthread+0x30b/0x410 /kernel/kthread.c:255
 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..