kernel panic(USB related)?

[Krassimir Slavchev]

ohci0: <AT91 integrated ohci controller> mem 0x300000-0x3fffff irq 23 on 
atmelarm0
ohci0: [GIANT-LOCKED]
ohci0: [ITHREAD]
Enable ohci_clk
Enable mck
Enable plla
Enable main
Turning PC 0x800 on
Done PCSR is now: 0x1fffffc!
Enable uhpck
Enable pllb
Enable main
Turning PLLB 0x102f3e05 on
Done!
Turning SC 0x10 on
Done SCSR is now: 0x215!

vm_fault(0xc01f4e80, 300000, 2, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0xc0220ccc
FSR=00000005, FAR=00300004, spsr=600000d3
r0 =00000000, r1 =00300000, r2 =00000004, r3 =00000000
r4 =c084d000, r5 =00000000, r6 =00000001, r7 =ffffffff
r8 =00000000, r9 =00000002, r10=c080a100, r11=c0220d54
r12=c01f0670, ssp=c0220d18, slr=c01803f8, pc =c0163dd8

[thread pid 0 tid 0 ]
Stopped at      generic_bs_w_4: str     r3, [r1, r2]
db> bt
Tracing pid 0 tid 0 td 0xc01f4ce8
db_trace_thread() at db_trace_thread+0x10
scp=0xc0168018 rlv=0xc00145a4 (db_command_loop+0x724)
        rsp=0xc02209d4 rfp=0xc02209f8
        r10=0x00000000 r9=0xc01f2e14
        r8=0xc01f3648 r7=0xc0220a0c r6=0x00000010 r5=0x00000000
        r4=0xc01f4ce8
db_command_loop() at db_command_loop+0x694
scp=0xc0014514 rlv=0xc0014198 (db_command_loop+0x318)
        rsp=0xc02209fc rfp=0xc0220ab0
        r6=0x00000000 r5=0xc0220a08
        r4=0xc01d9b40
db_command_loop() at db_command_loop+0x10
scp=0xc0013e90 rlv=0xc00164cc (X_db_symbol_values+0x18c)
        rsp=0xc0220ab4 rfp=0xc0220bd0
        r10=0xc01f8ab4 r9=0xc01f8aac
        r8=0x00000005 r7=0x00000000 r6=0xc0220ccc r5=0x000000c0
        r4=0xc0220abc
X_db_symbol_values() at X_db_symbol_values+0x114
scp=0xc0016454 rlv=0xc0099440 (kdb_trap+0xbc)
        rsp=0xc0220bd4 rfp=0xc0220c00
        r4=0x000000c0
kdb_trap() at kdb_trap+0x10
scp=0xc0099394 rlv=0xc0173fd0 (sysarch+0x1e4)
        rsp=0xc0220c04 rfp=0xc0220c20
        r10=0xc0220ccc r9=0xc01f4e80
        r8=0xc0220ef8 r7=0xc01f4ce8 r6=0x00300004 r5=0x00000005
        r4=0xc0220ccc
sysarch() at sysarch+0xd4
scp=0xc0173ec0 rlv=0xc0174534 (data_abort_handler+0x4e0)
        rsp=0xc0220c24 rfp=0xc0220cc8
        r6=0x00300000 r5=0xc0220c48
        r4=0xc01f4afc
data_abort_handler() at data_abort_handler+0x10
scp=0xc0174064 rlv=0xc016a020 (address_exception_entry+0x50)
        rsp=0xc0220ccc rfp=0xc0220d54
        r10=0xc080a100 r9=0x00000002
        r8=0x00000000 r7=0xffffffff r6=0x00000001 r5=0xe0000004
        r4=0xc084d000
at91_pmc_clock_disable() at at91_pmc_clock_disable+0x3850
scp=0xc01802a4 rlv=0xc0093e24 (device_attach+0x238)
        rsp=0xc0220d58 rfp=0xc0220d9c
        r10=0xc018d40c r9=0xc018da28
        r8=0x00000000 r7=0xc080a100 r6=0xc0092090 r5=0x80000000
        r4=0xc07acc00
device_attach() at device_attach+0x10
scp=0xc0093bfc rlv=0xc0094a00 (bus_generic_attach+0x20)
        rsp=0xc0220da0 rfp=0xc0220db4
        r10=0x00000017 r9=0x00000000
        r8=0xc07acc00 r7=0xc080a100 r6=0x00000000 r5=0xc01f0654
        r4=0xc080a100
bus_generic_attach() at bus_generic_attach+0x10
scp=0xc00949f0 rlv=0xc017a2c0 (bus_dma_get_range_nb+0x3bc)
        rsp=0xc0220db8 rfp=0xc0220df4
        r4=0x00000000
bus_dma_get_range_nb() at bus_dma_get_range_nb+0x18
scp=0xc0179f1c rlv=0xc0093e24 (device_attach+0x238)
        rsp=0xc0220df8 rfp=0xc0220e3c
        r10=0xc018d40c r9=0xc018da28
        r8=0x00000000 r7=0xc07acc00 r6=0xc0092090 r5=0x80000000
        r4=0xc07ab100
device_attach() at device_attach+0x10
scp=0xc0093bfc rlv=0xc0094a00 (bus_generic_attach+0x20)
        rsp=0xc0220e40 rfp=0xc0220e54
        r10=0xc018d40c r9=0xc018da28
        r8=0x00000000 r7=0xc07ab100 r6=0xc0092090 r5=0x80000000
        r4=0xc07acc00
bus_generic_attach() at bus_generic_attach+0x10
scp=0xc00949f0 rlv=0xc016be3c (dev_mem_md_init+0x154)
        rsp=0xc0220e58 rfp=0xc0220e6c
        r4=0xc07ab100
dev_mem_md_init() at dev_mem_md_init+0x144
scp=0xc016be2c rlv=0xc0093e24 (device_attach+0x238)
        rsp=0xc0220e70 rfp=0xc0220eb4
        r4=0xc07ab14c
device_attach() at device_attach+0x10
scp=0xc0093bfc rlv=0xc0095f60 (root_bus_configure+0x2c)
        rsp=0xc0220eb8 rfp=0xc0220ecc
        r10=0x00000000 r9=0x0000056c
        r8=0xc01f539c r7=0xc01f5390 r6=0xc01f5398 r5=0xc01f5394
        r4=0xc07ab100
root_bus_configure() at root_bus_configure+0x10
scp=0xc0095f44 rlv=0xc004f098 (mi_startup+0xd8)
        rsp=0xc0220ed0 rfp=0xc0220ef4
        r4=0xc01abbf0
mi_startup() at mi_startup+0x10
scp=0xc004efd0 rlv=0xc00001b0 (btext+0xd0)
        rsp=0xc0220ef8 rfp=0x00000000
        r10=0xfffff80f r8=0x2020ef2c
        r7=0x20000110 r6=0x00000004 r5=0x2000011c r4=0x200001f0
db>