On Thu, Oct 15, 2015 at 6:23 PM, [email protected] <[email protected]> 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! > ------------------------------ > [email protected] > > 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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