Re: [PATCH 0/6] randomize kernel physical address and virtual address separately

[Baoquan He]

On 02/01/15 at 05:13am, Andy Lutomirski wrote:
 
> I applied this to Linus' tree today, and I get:
> 
> early console in decompress_kernel
> KASLR disabled by default...
> 
> Decompressing Linux...
> 
> XZ-compressed data is corrupt
> 
>  -- System halted
> 
> If I comment out the output = 0x140000000 line, then it boots.
> 
> With gzip instead of XZ, it just gets stuck at Decompressing Linux...
> 
> Presumably this is because 0x140000000 is an invalid address in my VM.
> I added more RAM, and I get a nice reboot loop.  QEMU thinks that it's
> a page fault causing a triple fault.
> 
> If I add in my IDT code and #PF handler, nothing changes.  If I
> re-enable relocations, I get:
> 
> 32-bit relocation outside of kernel!
> 
> Can you post the whole set of patches you're using or a link to a git tree?

Hi Andy,

Please check the related code here:
https://github.com/baoquan-he/linux/commits/kaslr-separate-random

Baoquan
Thanks
> 
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