[  312.395370] Unable to handle kernel paging request at virtual
address 09181000
[  312.395450] pgd = c0204000
[  312.395469] [09181000] *pgd=00000000
[  312.395500] Internal error: Oops: 2805 [#1] SMP ARM
[  312.395522] Modules linked in: xen_blkback xen_netback xen_gntdev
bridge stp llc ipv6 brcmfmac brcmutil cfg80211
[  312.395610] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
3.16.0-07621-g025a5f2 #1
[  312.395640] task: c0b8f4e0 ti: c0b84000 task.ti: c0b84000
[  312.395674] PC is at v7_dma_inv_range+0x34/0x4c
[  312.395702] LR is at __dma_page_dev_to_cpu+0x80/0x100
[  312.395728] pc : [<c021b960>]    lr : [<c021791c>]    psr: 400d0193
[  312.395728] sp : c0b85df0  ip : c0b8c480  fp : 00000000
[  312.395768] r10: 00001000  r9 : 00000002  r8 : dc4fc020
[  312.395791] r7 : 00001000  r6 : c0c80ec0  r5 : c0b8f204  r4 : 00000000
[  312.395817] r3 : 0000003f  r2 : 00000040  r1 : 09182000  r0 : 09181000
[  312.395845] Flags: nZcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM
Segment kernel
[  312.395874] Control: 10c5387d  Table: 7987006a  DAC: 00000015
[  312.395900] Process swapper/0 (pid: 0, stack limit = 0xc0b84250)
[  312.395926] Stack: (0xc0b85df0 to 0xc0b86000)
[  312.395952] 5de0:                                     c021b9f8
00000100 db2686c0 a9181000
[  312.395986] 5e00: 00000000 000a9181 a9181000 db12be10 00000002
c04a7774 00001000 00000002
[  312.396019] 5e20: 00000000 c0780b34 000028d3 00000000 db268580
db02e018 00000002 0000000b
[  312.396053] 5e40: 00000002 db12be10 00000000 80000014 00000001
c04a7a78 00001000 00000002
[  312.396086] 5e60: 00000000 00000048 00000040 db42cac0 c0b8c44c
db42d834 00000000 db42d8f8
[  312.396120] 5e80: 80000016 c06f8900 00000000 be477780 00000048
00000000 dbbbb580 dbbb76b8
[  312.396154] 5ea0: c0b8c7a4 c0296fac bc06b3a1 00000048 00000001
db41f440 c0bd61d8 00000000
[  312.396187] 5ec0: 00000000 00000040 db0090c0 c0c52edb 00000001
c027e4f0 a3ec2b42 c08377c8
[  312.396221] 5ee0: bc2c23f0 db0090c0 c0bd61d8 00000000 e0804000
c0b81ee0 c0b84000 00000000
[  312.396255] 5f00: c08377c8 c027e628 00000000 db0090c0 c0bd61d8
c02816ec c0281644 00000040
[  312.396289] 5f20: 00000040 c027dd40 c0b81ad8 c020f67c e080400c
c0b8c918 c0b85f58 c02088fc
[  312.396322] 5f40: c020f984 c020f988 600d0013 ffffffff c0b85f8c
c0212a80 ffffffed 00000000
[  312.396356] 5f60: ffffffed c021c140 c0b8c4fc c0b8c498 00000000
00000000 c0b81ee0 c0b84000
[  312.396390] 5f80: 00000000 c08377c8 00000020 c0b85fa0 c020f984
c020f988 600d0013 ffffffff
[  312.396424] 5fa0: 00000000 c0273f14 c0b85fb4 c0c52ed9 00000000
c0c53080 00000000 c0aebba4
[  312.396458] 5fc0: ffffffff ffffffff c0aeb5ec 00000000 00000000
c0b59878 00000000 c0c53bd4
[  312.396491] 5fe0: c0b8c484 c0b59874 c0b90508 6020406a 410fc074
60208074 00000000 00000000
[  312.396542] [<c021b960>] (v7_dma_inv_range) from [<c021791c>]
(__dma_page_dev_to_cpu+0x80/0x100)
[  312.396587] [<c021791c>] (__dma_page_dev_to_cpu) from [<c04a7774>]
(xen_unmap_single+0xbc/0x108)
[  312.396628] [<c04a7774>] (xen_unmap_single) from [<c04a7a78>]
(xen_swiotlb_unmap_sg_attrs+0x48/0x68)
[  312.396669] [<c04a7a78>] (xen_swiotlb_unmap_sg_attrs) from
[<c06f8900>] (sunxi_mmc_irq+0x31c/0x574)
[  312.396712] [<c06f8900>] (sunxi_mmc_irq) from [<c027e4f0>]
(handle_irq_event_percpu+0x38/0x130)
[  312.396753] [<c027e4f0>] (handle_irq_event_percpu) from
[<c027e628>] (handle_irq_event+0x40/0x60)
[  312.396794] [<c027e628>] (handle_irq_event) from [<c02816ec>]
(handle_fasteoi_irq+0xa8/0x1a4)
[  312.396832] [<c02816ec>] (handle_fasteoi_irq) from [<c027dd40>]
(generic_handle_irq+0x2c/0x3c)
[  312.396873] [<c027dd40>] (generic_handle_irq) from [<c020f67c>]
(handle_IRQ+0x40/0x90)
[  312.396911] [<c020f67c>] (handle_IRQ) from [<c02088fc>]
(gic_handle_irq+0x2c/0x5c)
[  312.396946] [<c02088fc>] (gic_handle_irq) from [<c0212a80>]
(__irq_svc+0x40/0x50)
[  312.396974] Exception stack(0xc0b85f58 to 0xc0b85fa0)
[  312.396998] 5f40:
    ffffffed 00000000
[  312.397032] 5f60: ffffffed c021c140 c0b8c4fc c0b8c498 00000000
00000000 c0b81ee0 c0b84000
[  312.397066] 5f80: 00000000 c08377c8 00000020 c0b85fa0 c020f984
c020f988 600d0013 ffffffff
[  312.397103] [<c0212a80>] (__irq_svc) from [<c020f988>]
(arch_cpu_idle+0x38/0x3c)
[  312.397142] [<c020f988>] (arch_cpu_idle) from [<c0273f14>]
(cpu_startup_entry+0x1dc/0x210)
[  312.397182] [<c0273f14>] (cpu_startup_entry) from [<c0aebba4>]
(start_kernel+0x374/0x380)
[  312.397217] Code: 1e070f3e e1110003 e1c11003 1e071f3e (ee070f36)
[  312.397248] ---[ end trace 3021212db31ca43e ]---
[  312.397273] Kernel panic - not syncing: Fatal exception in interrupt
[  312.397353] CPU1: stopping
[  312.397390] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D
3.16.0-07621-g025a5f2 #1
[  312.397436] [<c02163c4>] (unwind_backtrace) from [<c0211f00>]
(show_stack+0x10/0x14)
[  312.397478] [<c0211f00>] (show_stack) from [<c082bea0>]
(dump_stack+0x88/0x98)
[  312.397516] [<c082bea0>] (dump_stack) from [<c0214b7c>]
(handle_IPI+0x148/0x174)
[  312.397551] [<c0214b7c>] (handle_IPI) from [<c0208928>]
(gic_handle_irq+0x58/0x5c)
[  312.397585] [<c0208928>] (gic_handle_irq) from [<c0212a80>]
(__irq_svc+0x40/0x50)
[  312.397614] Exception stack(0xdb08ff90 to 0xdb08ffd8)
[  312.397639] ff80:                                     ffffffed
00000000 ffffffed c021c140
[  312.397672] ffa0: c0b8c4fc c0b8c498 00000000 00000000 c0b81ee0
db08e000 00000000 c08377c8
[  312.397705] ffc0: 00000020 db08ffd8 c020f984 c020f988 60040013 ffffffff
[  312.397737] [<c0212a80>] (__irq_svc) from [<c020f988>]
(arch_cpu_idle+0x38/0x3c)
[  312.397774] [<c020f988>] (arch_cpu_idle) from [<c0273f14>]
(cpu_startup_entry+0x1dc/0x210)
[  312.397813] [<c0273f14>] (cpu_startup_entry) from [<60208a64>] (0x60208a64)
[  312.397845] ---[ end Kernel panic - not syncing: Fatal exception in interrupt