Bug#535571: kernel unaligned access copy_to_user_state with IPSec

[Jonathan Nieder <jrnieder@gmail.com>]

ja nein wrote:

> I finally managed to compile some debug symbols into the kernel. Here we go:
>
> dmesg:
> [3179998.695837] Kernel unaligned access at TPC [1066a958] copy_to_user_state+0x54/0x9c [xfrm_user]
> [3179998.811473] Kernel unaligned access at TPC[1066a958] copy_to_user_state+0x54/0x9c [xfrm_user]
>
> Debug output:
>
> Reading symbols from
> /home/inst/kernel/linux-2.6-2.6.32/net/xfrm/xfrm_user.ko...done.
> (gdb) list *(copy_to_user_state+0x54)
> 0x9c0 is in copy_to_user_state (net/xfrm/xfrm_user.c:513).

Just to make sure, is the kernel you are reading symbols from the
same build as the one that produced the message in dmesg?

> I'll provide same info for a 3.x kernel, soon.

Thanks, that's very useful.