Hi3559AV00，跑业务，内核崩溃，卸载hi3559av100_vfmw就正常了，

这个问题要怎么分析定位？
[code]~ # Unable to handle kernel paging request at virtual address acb3b2b1b0b1b0ae
Mem abort info:
  ESR = 0x96000004
  Exception class = DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
Data abort info:
  ISV = 0, ISS = 0x00000004
  CM = 0, WnR = 0
pgd = ffffffc0fa706000
[acb3b2b1b0b1b0ae] *pgd=0000000000000000, *pud=0000000000000000

Internal error: Oops: 96000004 [#1] SMP
CPU: 3 PID: 4241 Comm: HI_VFMW_STM Tainted: P           O    4.9.37 #1
Hardware name: Hisilicon HI3559AV100 DEMO Board (DT)
task: ffffffc0fd871800 task.stack: ffffffc01563c000
PC is at vdec_read_stream+0xa0/0x990 [hi3559av100_vdec]
LR is at vdec_read_stream+0x88/0x990 [hi3559av100_vdec]
pc : [] lr : [] pstate: 00000085
sp : ffffffc01563fc30
x29: ffffffc01563fc60 x28: ffffff800131d300
x27: ffffff80012f50b0 x26: ffffff8001382500
x25: 00000000b0aeb0ad x24: ffffff8008877108
x23: 0000000000007440 x22: 000000000000000a
x21: ffffffc01563fd38 x20: ffffff800e65a440
x19: ffffff8001319300 x18: 0000000000000000
x17: 0000007fadf2da18 x16: ffffff800817f468
x15: 000098515c000000 x14: 0019a14780000000
x13: 00000003e8000000 x12: 0000000000000000
x11: ffffff8008857000 x10: 00000000000007e0
x9 : ffffffc01563c000 x8 : ffffffc01563fd88
x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffffffc103fbf700 x4 : 0000000000000008
x3 : acb3b2b1b0b1b0ae x2 : b5b0aeb0adacb4b0
x1 : 00000000b8b3b4b2 x0 : ffffff800a747920

Process HI_VFMW_STM (pid: 4241, stack limit = 0xffffffc01563c020)
Stack: (0xffffffc01563fc30 to 0xffffffc015640000)
fc20:                                   ffffffc01563fc60 ffffff80080f123c
fc40: ffffffc01563fcc8 00000000ffffca2f 0000000000000000 0000000000040925
fc60: ffffffc01563fcd0 ffffff80012b38dc ffffff8001319300 0000000000000000
fc80: 0000000000000000 ffffffc01563fd38 0000000000000004 0000000000000003
fca0: ffffff8001320298 0000000000000002 ffffff80012f50b0 ffffff800aa6e000
fcc0: 0000000000000000 0000000000040925 ffffffc01563fd10 ffffff80012b3484
fce0: 0000000000000000 ffffff8008877108 0000000000000003 0000000000000002
fd00: 0000000000000004 0000000000000002 ffffffc01563fd90 ffffff80012b3544
fd20: 0000000000000001 ffffff8001320298 0000000000000000 0000000000000000
fd40: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
fd60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
fd80: 0000000000000000 0000000000040925 ffffffc01563fdb0 ffffff80012b03d0
fda0: ffffff8001319300 ffffff80012b03c4 ffffffc01563fe20 ffffff80080b7cbc
fdc0: ffffffc0fb12bb00 ffffff80088cce88 ffffff8008753ea0 0000000000000000
fde0: ffffff80012b0300 0000000000000000 0000000000000000 0000000000000000
fe00: 0000000000000000 0000000000000000 ffffff8008753ea0 0000000000000000
fe20: 0000000000000000 ffffff8008082ee0 ffffff80080b7bd8 ffffffc0fb12bb00
fe40: 0000000000000000 0000000000000000 0000000000000000 ffffffc01563c000
fe60: 0000000000000000 ffffffc01563fe68 0000000000000000 ffffff8000000000
fe80: ffffff8000000000 ffffffc01563fe88 ffffffc01563fe88 0000000000000000
fea0: 0000000000000000 ffffffc01563fea8 ffffffc01563fea8 0000000000040925
fec0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
fee0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ff00: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ff20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ff40: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ff60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ff80: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ffa0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ffc0: 0000000000000000 0000000000000005 0000000000000000 0000000000000000
ffe0: 0000000000000000 0000000000000000 7677747572737071 e3e2e1e0e7e6e5e4
Call trace:
Exception stack(0xffffffc01563fa40 to 0xffffffc01563fb70)
fa40: ffffff8001319300 0000007fffffffff ffffffc01563fc30 ffffff800136bcd0
fa60: 0000000000000085 ffffff80088771b8 ffffffc0fe15c600 00000000ffffca2e
fa80: 0000000000000000 ffffffc103fbf700 0000000000000000 ffffffc01563fbf4
faa0: ffffffc103fbba38 0000000000000000 0000004000000002 ffffffc0fd876850
fac0: ffffffc0fe15c600 ffffff8008857700 ffffff8008857700 0000000000000003
fae0: ffffffc0fe15c600 0000000000000000 0000000300000000 0000000000040925
fb00: ffffff800a747920 00000000b8b3b4b2 b5b0aeb0adacb4b0 acb3b2b1b0b1b0ae
fb20: 0000000000000008 ffffffc103fbf700 0000000000000000 0000000000000000
fb40: ffffffc01563fd88 ffffffc01563c000 00000000000007e0 ffffff8008857000
fb60: 0000000000000000 00000003e8000000
[] vdec_read_stream+0xa0/0x990 [hi3559av100_vdec]
[] stm_raw_read_ext+0x5c/0x158 [hi3559av100_vfmw]
[] stm_chan_fill_raw+0x7c/0xd0 [hi3559av100_vfmw]
[] stm_chan_run_proc+0x6c/0x88 [hi3559av100_vfmw]
[] stm_ctrl_thread_func+0xd0/0x238 [hi3559av100_vfmw]
[] kthread+0xe4/0xf8
[] ret_from_fork+0x10/0x30
Code: f9405c03 f9405002 b9400801 b9402019 (b9400060)
---[ end trace 8ecb6b6c6bca4274 ]---
Kernel panic - not syncing: Fatal exception
SMP: stopping secondary CPUs
Kernel Offset: disabled
Memory Limit: 4096 MB
---[ end Kernel panic - not syncing: Fatal exception
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