strange output in /var/log/messages

[Alexej Sokolov]

Hello,
I try now to debug a kernel module and I make some output with printf(9).
But the text appears in /var/log/messages in very strange form:

Feb 12 17:54:34 myhost kernel: b
Feb 12 17:54:34 myhost kernel: eg
Feb 12 17:54:34 myhost kernel: in
Feb 12 17:54:34 myhost kernel: .
Feb 12 17:54:34 myhost kernel: De
Feb 12 17:54:34 myhost kernel: vice
Feb 12 17:54:34 myhost kernel: U
Feb 12 17:54:34 myhost kernel: ni
Feb 12 17:54:34 myhost kernel: t:

Could anyone explain the reason of this kind of output. And how can I
correct it?

Alexej