where does uname get version number?

[John]

After a rocky upgrade from 9.1-RELEASE(-p10) to 9.2-RELEASE, all files I checked are now in 9.2-RELEASE-p3.  For example:

/usr/src/sys/conf/newvers.sh contains:

TYPE="FreeBSD"
REVISION="9.2"
BRANCH="RELEASE-p4"

/etc/hosts contains:

# $FreeBSD: release/9.2.0/etc/hosts 109997 2003-01-28 21:29:23Z dbaker $

and the kernel contains the new version:
 
# strings /boot/kernel/kernel | grep RELEASE|grep 9
@(#)FreeBSD 9.2-RELEASE-p4 #0: Tue Apr  8 18:08:22 UTC 2014
FreeBSD 9.2-RELEASE-p4 #0: Tue Apr  8 18:08:22 UTC 2014
9.2-RELEASE-p4

However, uname somehow shows the wrong version:

# uname -a
FreeBSD localhost.localdomain 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec  4 09:23:10 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

So where does uname get the version number from?  Which file(s) might not have been upgraded?  Thank you!