axidma: loading out-of-tree module taints kernel.
axidma: axidma_dma.c: axidma_dma_init: 706: DMA: Found 0 transmit channels and 0 receive channels.
axidma: axidma_dma.c: axidma_dma_init: 708: VDMA: Found 1 transmit channels and 1 receive channels.
Z-turn# ./vdma2 ./white.bmp ./test2.bmp 
AXI DMA File Transfer Info:
        Transmit Channel: 0
        Receive Channel: 1
        Input File Size: 2.64 Mb
        Output File Size: 2.64 Mb

begin to axidma_oneway_transfer.
into axidma_oneway_transfer.
chUnable to handle kernel NULL pointer dereference at virtual address 00000010
annel id: 1
start iocl.
pgd = ed818000
[00000010] *pgd=3d071831
Internal error: Oops - BUG: 17 [#1] PREEMPT SMP ARM
Modules linked in: axidma(O)
CPU: 1 PID: 719 Comm: vdma2 Tainted: G           O    4.9.0-xilinx #2
Hardware name: Xilinx Zynq Platform
task: ef3da400 task.stack: ef2ca000
PC is at axidma_start_transfer+0x2c/0x104 [axidma]
LR is at axidma_start_transfer+0x28/0x104 [axidma]
pc : [<bf0015ac>]    lr : [<bf0015a8>]    psr: 20000013
sp : ef2cbdb0  ip : ef2cbd58  fp : beecac2c
r10: 00000000  r9 : ef2ca000  r8 : 00000002
r7 : ef2cbdf4  r6 : bf003434  r5 : bf003442  r4 : 00000000
r3 : bf003430  r2 : bf003434  r1 : ef2cbdf4  r0 : bf003434
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 18c5387d  Table: 2d81804a  DAC: 00000051
Process vdma2 (pid: 719, stack limit = 0xef2ca210)
Stack: (0xef2cbdb0 to 0xef2cc000)
bda0:                                     00000002 00000000 00000004 00000001
bdc0: c014c1d8 00000000 ef2cbebc ef2dc0c0 00000000 ef2cbebc ef2dc0c0 ef2cbe38
bde0: 00000001 bf00180c 002a3000 ef13d784 ef13d78c 00000001 ef2cbe38 00000001
be00: 00000002 00000000 00000000 ef2cbe0c ef2cbe0c 00000001 00000001 00000001
be20: 00000022 ef3da400 ee87c990 c014c1d8 00000004 00000001 00000002 00000000
be40: 002a3000 3e800000 beecac0c ef2dc0c0 00000051 80105704 00000005 bf000b00
be60: ef13d600 c0365df0 c0a5c354 c0366cd4 00000001 ef13d600 ed8cd300 c0354a24
be80: 00000002 ee80d1d0 ef13d78c 20000013 00000001 00000001 00000004 0000000c
bea0: 0000000c c014c1d8 00000004 00000001 ef13d600 ed8cd300 ed8cd300 00000001
bec0: 00000001 b6819000 002a3000 ee952280 00000051 c0354654 00000000 ef2cbf88
bee0: ed8cd300 ef2d4300 beecac0c ee80d0f0 80105704 c01ded20 40049409 c01df680
bf00: ef2d4300 00000001 002a3000 00000003 00000000 ed8caa80 000002a3 c01ba754
bf20: 00000000 00000000 00000001 b6819000 00000000 00000000 ef2d4300 ed8cd300
bf40: 0000000c ed8cd308 00000002 ef385130 ef2ca000 00000000 beecac2c c01d0518
bf60: 00000000 00000000 0000000c ef2d4300 ef2d4300 beecac0c 80105704 00000005
bf80: ef2ca000 00000000 beecac2c c01df70c 000091e8 00000000 000000d8 00000036
bfa0: c0106f64 c0106da0 000091e8 00000000 00000005 80105704 beecac0c beecac0c
bfc0: 000091e8 00000000 000000d8 00000036 b6ea5000 00000000 b6f03000 beecac2c
bfe0: 00000000 beecabf8 b6ed1a20 b6e31c1c 60000010 00000005 00000000 00000000
[<bf0015ac>] (axidma_start_transfer [axidma]) from [<bf00180c>] (axidma_read_transfer+0xf4/0x10c [axidma])
[<bf00180c>] (axidma_read_transfer [axidma]) from [<bf000b00>] (axidma_ioctl+0x544/0x9a0 [axidma])
[<bf000b00>] (axidma_ioctl [axidma]) from [<c01ded20>] (vfs_ioctl+0x18/0x34)
[<c01ded20>] (vfs_ioctl) from [<c01df680>] (do_vfs_ioctl+0x838/0x88c)
[<c01df680>] (do_vfs_ioctl) from [<c01df70c>] (SyS_ioctl+0x38/0x54)
[<c01df70c>] (SyS_ioctl) from [<c0106da0>] (ret_fast_syscall+0x0/0x3c)
Code: e1a05000 e5970024 ebffff0a e1a06000 (e5940010) 
---[ end trace 7643574c28b9b389 ]---
Segmentation fault