question about Make CONFIG_STRICT_MEMORY_RWX even stricter patch

[Wang, Yalin]

Hi  ,

We will cherry-pick this patch :
http://cgit.sonyericsson.net/cgit.cgi/kernel/msm.git/commit/?id=2504e77ddedfa34dbd64e757a14e5b21a613c000

for security reason ,

but I have a question about this patch ,
this patch will make .text  section  permission become RX but not writable ,
so  some features like  kprobe / jump_label  may can't work correct,
these  features will change code during runtime ,
so it will result in page fault  if it write .text section .


Thanks 



Yalin.Wang
Software Engineer 
OS Kernel&Graphics
 
Sony Mobile Communications
Tel: +86 10 5966 9819
Phone: 18610323092
Address: No.16 Guangshun South Street, Chaoyang, Beijing, P.R.C.

sonymobile.com