problem with "undefined instruction"

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Hi,

I'm currently trying to get a mainline based kernel running on my pandaboard.
The problem is, that it's crashing very early during the init phase because of
"undefined instruction" exceptions:

[    1.867980] udevd (56): undefined instruction: pc=401e6ed4
[    1.874603] Code: 9cd0 fffe e92d 4ff0 (ed2d)
[    1.977752] modprobe (69): undefined instruction: pc=400c6ed4
[    1.977783] Code: 9cd0 fffe e92d 4ff0 (ed2d)
[    1.978240] init (1): undefined instruction: pc=40149ed4
[    1.978240] Code: 9cd0 fffe e92d 4ff0 (ed2d)
[    2.005706] Kernel panic - not syncing: Attempted to kill init!

Exactly the same userland boots fine with the original 2.6.35 kernel, so it's
probably not the userland's fault. But I searched for the byte combination
anyway and found it in libc.so:

   32ecc:   9cd0        ldr r4, [sp, #832]  ; 0x340
   32ece:   fffe e92d   vtbl.8  d30, {d14-d15}, d29

00032ed0 <_IO_vfprintf>:
   32ed0:   e92d 4ff0   stmdb   sp!, {r4, r5, r6, r7, r8, r9, sl, fp, lr}
   32ed4:   ed2d 8b02   vpush   {d8}

Can you please tell me what's missing in my kernel? I uploaded
.config and full boot messages here:

http://elektranox.org/omap-kernel/config.txt (kernel's .config)
http://elektranox.org/omap-kernel/dmesg.txt (full boot output)

-- Sebastian

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