Hi! this one is easy :)For printing pointer in kernel space, you should use %px
not %p as format specifier. I heard this is for security reason(?).Chan Kim내
Galaxy에서 보냄
-------- 원본 이메일 --------발신: wuzhouhui <[email protected]> 날짜:
21/8/19 오후 9:17 (GMT+09:00) 받은 사람: Lloyd <[email protected]>,
[email protected] 제목: Re: kmalloc - Address is not consecutive On
8/19/21 6:54 PM, Lloyd wrote:> Hi,>> I am trying to print the address of
consecutive locations in a > memory allocated using kmalloc. It prints non
contiguous addresses! I > tried with kmalloc_array, and normal array on stack,
I got the same > result. May I know the reason? The code fragment for array
and result > are given below.>> uint8_t MyArray[100]={'0'};> printk(KERN_INFO
"\nAddress is-> %p\n",&MyArray[0]);> printk(KERN_INFO "\nAddress is->
%p\n",&MyArray[1]);> printk(KERN_INFO "\nAddress is-> %p\n",&MyArray[2]);>>> [
8684.613909] Address is-> 00000000b3330991> [ 8684.613914]
Address is-> 000000000519068c> [ 8684.613915] Address is->
00000000e448ca76>Quoted from Documentation/core-api/printk-formats.rst:> A raw
pointer value may be printed with %p which will hash the address> before
printing. The kernel also supports extended specifiers for printing> pointers
of different types.So the address printed neither logical nor physical
address.> Thanks a lot,> Lloyd>>>
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