[tboot-devel] Kernel symbol table seems changed when booting with tboot

[Rogan K. L. <cre...@gm...>]

Hi, list,

I am a newbie for tboot. As you can easily imagine, I've got an issue that
kernel symbol tables seems to be changed when booting with tboot. For
example, the addresses of init_uts_ns are different between /proc/kallsyms
and my System.map file.

* System.map
# cat /boot/System.map-2.6.32-202.el6.i686 | grep -w init_uts_ns
c0a2f380 D init_uts_ns

* kallsyms
# cat /proc/kallsyms | grep -w init_uts_ns
c122f380 D init_uts_ns

The gap is 0x800000 and it looks to match up with ptab_base. I am using the
System.map file to develop a custom tool so that this change could be a
problem. Is there anyone who can verify if it is expected result? Any
comment would be helpful.

Thanks in advance,
Rogan Kyuseok Lee