kernel panic

[Mulyadi Santosa]

On Thu, Oct 15, 2015 at 6:23 PM, jinzhao at wingtech.com <jinzhao at wingtech.com>
wrote:

> 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
>
>
AFAIK, that's the function to get PTE of the related pages, then get the
virtual address of them.

Maybe the caller hit invalid PTE ?

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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