in_cksum: out of data

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

From time to time I get on the console
in_cksum: out of data

It comes from src/sys/arch/amd64/amd64/cpu_in_cksum.S
.Mout_of_mbufs_msg:
.string "in_cksum: out of data\n"

out_of_mbufs suggests mbufs shortage, but the usage of the string
in the file suggests other uses. What does it means, after all?
-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost