hub 4-0:1.0: port 5, status 0501, change 0001, 480 Mb/s
hub 4-0:1.0: debounce: port 5: total 100ms stable 100ms status 0x501
hub 4-0:1.0: port 5 not reset yet, waiting 50ms
ehci_hcd 0000:00:09.2: port 5 high speed
ehci_hcd 0000:00:09.2: GetStatus port 5 status 001005 POWER sig=se0  PE CONNECT
usb 4-5: new high speed USB device using address 5
Oops: kernel access of bad area, sig: 11 [#1]
NIP: C01490FC LR: E224A96C SP: DFE95D00 REGS: dfe95c50 TRAP: 0300    Not tainted
MSR: 00001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: FC1180E0, DSISR: 04000000
TASK = dfe93980[24] 'khubd' THREAD: dfe94000Last syscall: -1 
GPR00: 00000000 DFE95D00 DFE93980 FC1180E0 00000000 00000000 FC1190BC DFE95D78 
GPR08: FC1190F8 FFFFFFFF FC119158 C01490EC 24004042 00000000 0FFD5600 00000001 
GPR16: 00800000 0FFFF220 FFFFFFFF C0320000 C0320000 C0A61A10 D142E888 C0B743E0 
GPR24: DFE95D78 800E0800 40000000 FC119098 FC119120 110A9060 FC118080 FC119060 
NIP [c01490fc] kref_get+0x10/0x24
LR [e224a96c] qh_append_tds+0x16c/0x2f0 [ehci_hcd]
Call trace:
 [e224ab64] submit_async+0x74/0xe0 [ehci_hcd]
 [e224e9d4] ehci_urb_enqueue+0x6c/0xe4 [ehci_hcd]
 [c01ec9f4] hcd_submit_urb+0x1a0/0x268
 [c01ed650] usb_submit_urb+0x24c/0x330
 [c01ed9fc] usb_start_wait_urb+0x5c/0x10c
 [c01edb20] usb_internal_control_msg+0x74/0x9c
 [c01edbe4] usb_control_msg+0x9c/0xc0
 [c01e9d34] hub_set_address+0x5c/0x94
 [c01e9f48] hub_port_init+0x1dc/0x3dc
 [c01ea4fc] hub_port_connect_change+0x1c0/0x4b4
 [c01eac10] hub_events+0x420/0x51c
 [c01ead4c] hub_thread+0x40/0xec
 [c000aec4] kernel_thread+0x44/0x60