kern/118247: netstat/sockstat reporting incorrect information due to MAC_PARTITION

[Hugo Saro]

>Number:         118247
>Category:       kern
>Synopsis:       netstat/sockstat reporting incorrect information due to MAC_PARTITION
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Nov 25 19:40:00 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Hugo Saro
>Release:        FreeBSD 7.0-BETA3 amd64
>Organization:
>Environment:
FreeBSD samba.multiverse.local 7.0-BETA3 FreeBSD 7.0-BETA3 #0: Sun Nov 25 03:53:45 WET 2007     klr at zaurak.bsdlan.org:/usr/obj/usr/src/sys/ZAURAK  amd64

>Description:
sockstat and netstat do not show the correct number of connections while security.mac.partition.enabled is set.

I am starting the jail with setpmac partition/XXX /etc/rc.d/jail start samba.

See below.

Should this happen ? I am very interested in further isolating jails with mac_partition, but not being able to netstat/sockstat from inside the jail (works fine from the host, as expected, however if done under setpmac, the following happens:

host# setpmac partition/9009 netstat -anfinet && echo -- && sockstat -4l
--
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
root     sshd       39843 3  tcp4   10.0.90.1:22          *:*
root     smbd       39813 18 tcp4   10.0.90.1:445         *:*
root     smbd       39813 19 tcp4   10.0.90.1:139         *:*
root     nmbd       39809 6  udp4   10.0.90.1:137         *:*
root     nmbd       39809 7  udp4   10.0.90.1:138         *:*
root     nmbd       39809 8  udp4   10.0.90.1:137         *:*
root     nmbd       39809 9  udp4   10.0.90.1:138         *:*
root     sshd       1462  3  tcp4   192.168.0.110:22      *:*

host# netstat -anfinet && echo -- && sockstat -4l
Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp4       0      0  10.0.90.1.139          192.168.0.1.55432      ESTABLISHED
tcp4       0      0  10.0.90.1.22           192.168.0.1.54898      ESTABLISHED
tcp4       0      0  10.0.90.1.139          *.*                    LISTEN
tcp4       0      0  10.0.90.1.445          *.*                    LISTEN
tcp4       0      0  10.0.90.1.22           *.*                    LISTEN
tcp4       0      0  192.168.0.110.22       *.*                    LISTEN
tcp4       0     48  192.168.0.110.22       192.168.0.1.52590      ESTABLISHED
udp4       0      0  10.0.90.1.138          *.*
udp4       0      0  10.0.90.1.137          *.*
udp4       0      0  10.0.90.1.138          *.*
udp4       0      0  10.0.90.1.137          *.*
--
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
root     sshd       39843 3  tcp4   10.0.90.1:22          *:*
root     smbd       39813 18 tcp4   10.0.90.1:445         *:*
root     smbd       39813 19 tcp4   10.0.90.1:139         *:*
root     nmbd       39809 6  udp4   10.0.90.1:137         *:*
root     nmbd       39809 7  udp4   10.0.90.1:138         *:*
root     nmbd       39809 8  udp4   10.0.90.1:137         *:*
root     nmbd       39809 9  udp4   10.0.90.1:138         *:*
root     sshd       1462  3  tcp4   192.168.0.110:22      *:*




I might be missing something obvious, but MAC_PARTITION shouldn't affect the output of netstat/sockstat.
>How-To-Repeat:
host# sysctl security.mac.partition.enabled=0
security.mac.partition.enabled: 1 -> 0

jail# netstat -an -f inet
netstat: kvm not available: /dev/mem: No such file or directory
Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp4       0      0  10.0.90.1.139          192.168.0.1.55432      ESTABLISHED
tcp4       0    160  10.0.90.1.22           192.168.0.1.54898      ESTABLISHED
tcp4       0      0  10.0.90.1.139          *.*                    LISTEN
tcp4       0      0  10.0.90.1.445          *.*                    LISTEN
tcp4       0      0  10.0.90.1.22           *.*                    LISTEN
udp4       0      0  10.0.90.1.138          *.*
udp4       0      0  10.0.90.1.137          *.*
udp4       0      0  10.0.90.1.138          *.*
udp4       0      0  10.0.90.1.137          *.*


host# /etc/rc.d/sysctl reload
security.mac.partition.enabled: 0 -> 1

jail# netstat -an -f inet
netstat: kvm not available: /dev/mem: No such file or directory

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: