kdump crashing with linux binaries

[Alexander Best]

hi there,

when ktrace is used with a linux binary and one runs kdump afterwards kdump
segfaults. there's a problem report here
http://www.freebsd.org/cgi/query-pr.cgi?pr=120055 with a patch.

of course linux_kdump should be used instead if the regular kdump, but it
still would be nice to have this fix in HEAD and get rid of this segfault.
could somebody commit this patch please?

cheers.