[ 497.499249] usb-storage D 00000000 0 671 5 773 670 (L-TLB)
[ 497.506930] Call Trace:
[ 497.509372] [C3F35A60] [C00083AC] __switch_to+0x28/0x40
[ 497.514608] [C3F35A80] [C01F4B78] schedule+0x324/0x6bc
[ 497.519756] [C3F35AC0] [C01F5D6C] schedule_timeout+0x6c/0xd0
[ 497.525426] [C3F35B00] [C01F5C9C] io_schedule_timeout+0x30/0x54
[ 497.531356] [C3F35B20] [C0050DE4] congestion_wait+0x64/0x8c
[ 497.536941] [C3F35B70] [C004A9F0] throttle_vm_writeout+0x1c/0x84
[ 497.542958] [C3F35B90] [C004F33C] shrink_zone+0xbb0/0xfe4
[ 497.548367] [C3F35D40] [C004F8F4] try_to_free_pages+0x184/0x2cc
[ 497.554298] [C3F35DB0] [C0049AA8] __alloc_pages+0x110/0x2c0
[ 497.559878] [C3F35E00] [C0060F84] cache_alloc_refill+0x394/0x694
[ 497.565900] [C3F35E30] [C00614A0] __kmalloc+0xc4/0xcc
[ 497.570961] [C3F35E40] [C01544D0] usb_alloc_urb+0x1c/0x5c
[ 497.576371] [C3F35E50] [C015520C] usb_sg_init+0x1a0/0x2f8
[ 497.581779] [C3F35EA0] [C0167318] usb_stor_bulk_transfer_sg+0x8c/0x138
[ 497.588317] [C3F35ED0] [C0167960] usb_stor_Bulk_transport+0x140/0x310
[ 497.594767] [C3F35F00] [C0167DCC] usb_stor_invoke_transport+0x2c/0x344
[ 497.601303] [C3F35F50] [C0166B2C] usb_stor_transparent_scsi_command+0x10/0x20
[ 497.608449] [C3F35F60] [C0168498] usb_stor_control_thread+0x1f8/0x290
[ 497.614900] [C3F35FC0] [C0033E48] kthread+0xf4/0x130
[ 497.619876] [C3F35FF0] [C001093C] kernel_thread+0x44/0x60