Page Fault on real hardware

[Matthias Lange]

On Mon, Oct 29, 2012 at 09:54:40AM -0700, Wajidali Whowe wrote:
> Dear all,
>  
> I also tried the  x86-mp_vPCI_defconfig and x86-native_defconfig (For both of them I only deactivated PMEM support) and now they resulted in the following outputs, where the PC might also not be seen, i.e. there is no page fault but the Trap 13: 
>  ..
>  ..
>  vmlinuz . | main thread will be 414
>  vmlinuz . | l4x_register_pointer_section: addr = 006a8000 size = 2072576
>  vmlinuz . | section-with-init: virt: 0x6a8000 to 0x8a1fff [2024KiB]
>  vmlinuz . | section-with-init: Phys: ....
>  ..
>  ..
> vmlinuz . | Loading: rom/ramdiskfs.tar.gz 
> vmlinuz . | INITRD: Size of RAMdisk is 32768KiB
> vmlinuz . | RAMdisk from 18c000000 to 1ac00000 [32768KiB] 
> Die message: Trap: 13
> vmlinuz . | panic: going to sleep forever, bye
> 
> 
> Would it be possible to find out the specific definitions for the Traps? For instance does Trap number (in our case 13) tell about the reasons? 

Yes. Trap #13 on x86 is a general protection fault. See Intel's IA-32 Software
Developer Manual 3A, chapter 6 for more details.

Matthias.


-- 
Dipl.-Inf. Matthias Lange <mlange at sec.t-labs.tu-berlin.de>
Security in Telecommunications
TU Berlin / Telekom Innovation Laboratories
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