程序执行后出现错误提示无法在虚拟地址0a209001处理内核分页请求 这种问题
错误出现的日志为
Unable to handle kernel paging request at virtual address 0a209001
pgd = dbd38000
[0a209001] *pgd=00000000
Internal error: Oops: 805 [#3] SMP ARM
Modules linked in: nvp6124_ex(O) gpioi2c(O) hi3531a_adec(PO) hi3531a_aenc(PO) hi3531a_ao(PO) hi3531a_ai(PO) hi3531a_aio(PO) hi_rtc(O) hi3531a_ive(PO) hi3531a_vda(PO) hi3531a_h264e(PO) hi3531a_chnl(PO) hi3531a_venc(PO) hi3531a_rc(PO) hi3531a_hdmi(PO) hifb(PO) hi3531a_vou(PO) hi3531a_vpss(PO) hi3531a_viu(PO) hi3531a_vgs(PO) hi3531a_region(PO) hi3531a_tde(PO) hi3531a_vfmw(PO) hi3531a_vdec(PO) hi3531a_sys(PO) hi3531a_base(PO) hi_media(O) hiuser(O) mmz(O) [last unloaded: gpioi2c]
CPU: 0 PID: 1299 Comm: DvrUi2 Tainted: P D O 3.10.0 #30
task: df02b100 ti: dec3e000 task.ti: dec3e000
PC is at memcpy+0xcc/0x330
LR is at copy_to_iter_bvec+0x64/0x12c
pc : [<c01cfeac>] lr : [<c00a03c8>] psr: 80000013
sp : dec3fe04 ip : 00000000 fp : 00000001
r10: 00000001 r9 : dec3fe94 r8 : dec3fed8
r7 : 00000000 r6 : df2a7001 r5 : 0a209000 r4 : 00000001
r3 : 00000000 r2 : 80000000 r1 : df2a7001 r0 : 0a209001
Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c53c7d Table: 5bd3804a DAC: 00000015
如果出现这种错误，错误原因是因为系统内核的漏洞，自己经过很长时间的网上查找在无意中发现了最近发布的一篇文章才得以解决。
博客地址为http://erwinchang.github.io/2017/01/09/oops-memcpy/