On 4/30/2011 9:53 PM, Sebastian Reichel wrote:
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}
Looks like NEON instructions are taking an exception. Can you disable
VFP, NEON and give a one more shot.
Can you please tell me what's missing in my kernel? I uploaded
.config and full boot messages here:
Config seems to enable needed NEON/VFP options.
Regards
Santosh
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