我们公司的有一个机型，全志A20平台，晚上播放mov视频，第二天早上回来看，发现死机了。视频画面一直卡在那里，下面是死机前的打印信息。我们这个机型有些板子是必现的，有些只现过一次。各位大神看看，给个意见，我现在没有方向。。
[21319.515371] Unable to handle kernel paging request at virtual address 4012cf58
[21319.523446] pgd = dc4f0000
[21319.526460] [4012cf58] *pgd=5c40a831, *pte=5fd5059f, *ppte=5fd50e7e
[21319.533468] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
[21319.539483] Modules linked in: 8188eu rtl8150 uvcvideo sunxi_csi0 gc0308 videobuf_dma_contig videobuf_core mali(O) ump(O) switch_headset(C) a7_rotary gslX680 gpio_sunxi sun7i_ir ad82584 hdmi lcd disp nand(O)
[21319.560161] CPU: 1 Tainted: G WC O (3.4.39+ #116)
[21319.566492] PC is at vector_swi+0x28/0x88
[21319.570964] LR is at 0x4012cf5c
[21319.574464] pc : [<c000d9e8>] lr : [<4012cf5c>] psr: 40000093
[21319.574470] sp : d97cffb0 ip : 410aaff4 fp : 00000000
[21319.587262] r10: 410aaf84 r9 : 00000000 r8 : 00000010
[21319.593084] r7 : 000000a8 r6 : c0000000 r5 : 00000000 r4 : 42a17e28
[21319.600378] r3 : 0000002c r2 : 00000000 r1 : 00000001 r0 : 4280dd28
[21319.607661] Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
[21319.615713] Control: 10c5387d Table: 5c4f006a DAC: 00000015
[21319.622114]
[21319.622117] PC: 0xc000d968:
[21319.626873] d968 e31100ff 1afffff0 e59d1040 e5bde03c e16ff001 f57ff01f e95d7fff e1a00000
[21319.636025] d988 e28dd00c e1b0f00e eb018e3c e1a096ad e1a09689 e5991000 e3a08001 e3110c03
[21319.645177] d9a8 0affffec e1a0100d e3a00001 eb0008e6 eaffffe8 e320f000 e24dd048 e88d1fff
[21319.654338] d9c8 e28d803c e9486000 e14f8000 e58de03c e58d8040 e58d0044 e3180020 13a0a000
[21319.663489] d9e8 051ea004 e59fc0ac e59cc000 ee01cf10 f1080080 e1a096ad e1a09689 e28f809c
[21319.672644] da08 e3daa4ff 122a7609 159f808c e599a000 e92d0030 e31a0c03 1a000008 e3570f5f
[21319.681797] da28 e24fee13 3798f107 e28d1008 e3a08000 e357080f e2270000 2a000f89 ea017072
[21319.690951] da48 e1a02007 e28d1008 e3a00000 eb0008be e28fe014 e1a07000 e28d1008 e3570f5f
[21319.700106]
[21319.700110] SP: 0xd97cff30:
[21319.704870] ff30 d97cff44 c0072268 0000001d 00000000 00000000 c000e820 00000000 f1c82000
[21319.714022] ff50 d97cff68 c000d9e8 40000093 ffffffff d97cff9c c000d498 4280dd28 00000001
[21319.723175] ff70 00000000 0000002c 42a17e28 00000000 c0000000 000000a8 00000010 00000000
[21319.732326] ff90 410aaf84 00000000 410aaff4 d97cffb0 4012cf5c c000d9e8 40000093 ffffffff
[21319.741479] ffb0 4280dd28 00000001 00000000 0000002c 42a17e28 00000000 c0000000 000000a8
[21319.750630] ffd0 00000420 00000000 410aaf84 00000000 410aaff4 4280dd18 410a84f5 4012cf5c
[21319.759786] fff0 00000010 4280dd28 00000000 00000000 00000000 00000000 00000000 00000000
[21319.768937] 0010 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[21319.778093] Process AudioOut_2 (pid: 1782, stack limit = 0xd97ce2f8)
[21319.785174] Stack: (0xd97cffb0 to 0xd97d0000)
[21319.790027] ffa0: 4280dd28 00000001 00000000 0000002c
[21319.799141] ffc0: 42a17e28 00000000 c0000000 000000a8 00000420 00000000 410aaf84 00000000
[21319.808259] ffe0: 410aaff4 4280dd18 410a84f5 4012cf5c 00000010 4280dd28 00000000 00000000
[21319.817382] Code: e58d8040 e58d0044 e3180020 13a0a000 (051ea004)
[21319.824872] ---[ end trace a49eca71ac055e02 ]---
[21319.830062] Kernel panic - not syncing: Fatal exception
[21319.835938] CPU0: stopping
[21319.838987] [<c00142a8>] (unwind_backtrace+0x0/0xe0) from [<c0012818>] (handle_IPI+0xf8/0x1d4)
[21319.848597] [<c0012818>] (handle_IPI+0xf8/0x1d4) from [<c00084e0>] (gic_handle_irq+0x50/0x58)
[21319.858111] [<c00084e0>] (gic_handle_irq+0x50/0x58) from [<c000d500>] (__irq_svc+0x40/0x70)
[21319.867423] Exception stack(0xde487d68 to 0xde487db0)
[21319.873056] 7d60: dc4aa548 400a2008 00000008 d0380000 400a2000 dc4aa548
[21319.882179] 7d80: 5fd1659d dc48a288 400a2000 de487ee4 dc48a288 00000001 00000000 de487db0
[21319.891298] 7da0: c00c5334 c0012c64 20000113 ffffffff
[21319.896935] [<c000d500>] (__irq_svc+0x40/0x70) from [<c0012c64>] (flush_tlb_page+0x64/0x8c)
[21319.906256] [<c0012c64>] (flush_tlb_page+0x64/0x8c) from [<c00c5334>] (ptep_clear_flush_young+0x6c/0x74)
[21319.916836] [<c00c5334>] (ptep_clear_flush_young+0x6c/0x74) from [<c00c1270>] (page_referenced_one+0x78/0xd0)
[21319.927899] [<c00c1270>] (page_referenced_one+0x78/0xd0) from [<c00c2598>] (page_referenced+0x1a8/0x200)
[21319.938479] [<c00c2598>] (page_referenced+0x1a8/0x200) from [<c00af52c>] (shrink_mem_cgroup_zone+0x32c/0x4ec)
[21319.949541] [<c00af52c>] (shrink_mem_cgroup_zone+0x32c/0x4ec) from [<c00afc00>] (kswapd+0x514/0x890)
[21319.959732] [<c00afc00>] (kswapd+0x514/0x890) from [<c006897c>] (kthread+0x80/0x8c)
[21319.968277] [<c006897c>] (kthread+0x80/0x8c) from [<c000ea30>] (kernel_thread_exit+0x0/0x8)
[21319.977592] [hotplug]: try to kill cpu:0 failed!
