Re: ulogd unaligned trap
On 01/21/06 09:45:15PM +0000, Carlos Rodrigues wrote:
> Hi!
>
> I have a couple of Alpha machines (XP1000 and ES40) which spit this
> message regularly to /var/log/messages and the console:
>
> Jan 21 21:41:05 ulisses kernel: ulogd(26459): unaligned trap at
> 00000200001e2ce8: 000002000020a0e5 28 4
> Jan 21 21:41:05 ulisses kernel: ulogd(26459): unaligned trap at
> 00000200001e2d64: 000002000020a0e9 28 4
> Jan 21 21:41:05 ulisses kernel: ulogd(26459): unaligned trap at
> 00000200001e2da8: 000002000020a0e1 28 3
> Jan 21 21:41:05 ulisses kernel: ulogd(26459): unaligned trap at
> 00000200001e2df4: 000002000020a0e1 28 2
>
> I think (not sure) this started happening since the latest kernel
> security update.
>
> Both machines are running sarge, with the stock (debian) 2.4.27 kernel
> (smp, in the ES40).
>
> I don't think this is affecting the operation of ulogd, but I'm not
> sure. Anyways, I reported this to the BTS.
>
> Any ideas?
>
Ulogd will keep running just fine. What's happening is it's attempting
to access memory that's not aligned properly, the hardware complains
and the kernel fixes the access so the hardware is happy. It cause
a bit of a slowdown since the kernel has to fix up the operation,
but it doesn't cause any other problems.
> --
> Carlos Rodrigues
>
Jim.
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