kernel panic

[jinzhao at wingtech.com]

Dear all:
     I met a problem as below, what the function of walk_page_range??
Exception Class: Kernel (KE) 
PC is at [<ffffffc00017fc90>] walk_page_range+0x3c/0x314 

Current Executing Process: 
[Binder_C, 3611][main, 354] 

Backtrace: 
[<ffffffc0009f21dc>] __do_kernel_fault.part.5+0x70/0x84 
[<ffffffc0000942f4>] do_bad_area+0x90/0x94 
[<ffffffc000094340>] do_translation_fault+0x30/0x4c 
[<ffffffc0000813fc>] do_mem_abort+0x38/0x98 
[<ffffffc000083c58>] el1_da+0x1c/0x88 
[<ffffffc0001eb3e0>] show_smap+0x88/0x284 
[<ffffffc0001eb5e8>] show_pid_smap+0xc/0x18 
[<ffffffc0001aefb8>] seq_read+0x1a4/0x40c 
[<ffffffc00018e75c>] vfs_read+0x88/0x170 
[<ffffffc00018ebf0>] SyS_read+0x40/0x8c 
[<ffffffc000084308>] cpu_switch_to+0x48/0x4c 
[<ffffffffffffffff>] 0xffffffffffffffff


Thanks!


jinzhao at wingtech.cn
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