[RP-PPPoE] pppd zombies on k3.x with rp-pppoe 2.11 beta

[Daniel Petre]

hey,
maybe try latest 3.4 series or even 3.3.8 ?
btw: we' re using 3.4.0 and 3.3.8 without problems in setups with 700 avg. users.. ppp 2.4.5 , gentoo linux.

Sent from my Asus Transformer TF101.

"Sascha W." <master.b.at.raven at chefmail.de> wrote:

>He,
>
>we´re facing big problems on using rp-pppoeserver.
>Up to K2.6.34 (we used it up to christmas 2011) we used ppp2.4.4 and
>rp-pppoe 2.11 BETA with freeradius without an issue.
>Since switching to K3.x releases (01.2012) every user that exits leaves
>a pppd zombie on the system.
>We did an upgrade to ppp2.4.5 without any changes to the symptoms.
>The bugs is showing on all platforms im testing: xscale (armv5teb,
>linaro 4.6/4.7), x86, mipsel.
>
>
>
>the problem looks like this:
>
>root at x86:~# ps
>PID USER VSZ STAT COMMAND
>1 root 1020 S /sbin/init noinitrd
>2 root 0 SW [kthreadd]
>3 root 0 SW [ksoftirqd/0]
>4 root 0 SW [kworker/0:0]
>5 root 0 SW [kworker/u:0]
>6 root 0 SW [migration/0]
>7 root 0 SW< [khelper]
>8 root 0 SW< [netns]
>9 root 0 SW [sync_supers]
>10 root 0 SW [bdi-default]
>11 root 0 SW< [kblockd]
>12 root 0 SW< [ata_sff]
>14 root 0 SW [kworker/0:1]
>15 root 0 SW [kswapd0]
>16 root 0 SW [fsnotify_mark]
>17 root 0 SW< [crypto]
>30 root 0 SW< [iscsi_eh]
>31 root 0 SW< [kmpath_rdacd]
>32 root 0 SW [scsi_eh_0]
>33 root 0 SW [scsi_eh_1]
>34 root 0 SW< [cnic_wq]
>35 root 0 SW [kworker/u:1]
>36 root 0 SW< [cxgb4]
>45 root 0 SW< [deferwq]
>142 root 696 S /sbin/hotplug2 --set-rules-file /etc/hotplug2.rules
>--persistent
>147 root 1180 S watchdog
>502 root 0 SW< [cfg80211]
>757 root 760 S dnsmasq --conf-file=/tmp/dnsmasq.conf
>765 root 1132 S telnetd
>903 root 772 S pppoe-server -k -I br0 -L 10.0.0.13 -i -x 100 -N 95 -R
>10.0.0.30-124 -X /var/run/pppoeserver.pid
>906 root 960 S dropbear -b /tmp/loginprompt -r
>/tmp/root/.ssh/ssh_host_rsa_key -d /tmp/root/.ssh/ssh_host_dss_key -p 22
>1005 root 1068 S process_monitor
>1119 root 676 S cron
>1170 root 1572 S snmpd -c /var/snmp/snmpd.conf
>1318 root 1172 S wland
>1324 root 1068 S ttraff
>1524 root 1536 S httpd -p 80
>1532 root 1128 S syslogd -L
>1534 root 1124 S klogd
>1540 root 0 Z [pppd]
>2776 root 0 Z [pppd]
>2815 root 0 Z [pppd]
>...
>20048 root 0 Z [pppd]
>20052 root 0 Z [pppd]
>20068 root 0 Z [pppd]
>20181 root 0 Z [pppd]
>20266 root 0 Z [pppd]
>...
>26400 root 0 Z [pppd]
>26787 root 0 Z [pppd]
>26878 root 0 Z [pppd]
>27162 root 0 Z [pppd]
>27446 root 0 Z [pppd]
>27593 root 0 Z [pppd]
>27603 root 1444 S pppd plugin /usr/lib/rp-pppoe.so nic-br0 rp_pppoe_sess
>87:00:27:22:14:c0:c3 rp_pppoe_service file
>/tmp/pppoeserver/pppoe-server-options 10.0.0.13:10.0.0.116 nodetach
>noaccomp nopcomp
>27612 root 1444 S pppd plugin /usr/lib/rp-pppoe.so nic-br0 rp_pppoe_sess
>88:54:e6:fc:af:2c:5a rp_pppoe_service file
>/tmp/pppoeserver/pppoe-server-options 10.0.0.13:10.0.0.117 nodetach
>noaccomp nopcomp
>27621 root 1444 S pppd plugin /usr/lib/rp-pppoe.so nic-br0 rp_pppoe_sess
>89:d8:5d:4c:f2:be:56 rp_pppoe_service file
>/tmp/pppoeserver/pppoe-server-options 10.0.0.13:10.0.0.118 nodetach
>noaccomp nopcomp
>27630 root 1444 S pppd plugin /usr/lib/rp-pppoe.so nic-br0 rp_pppoe_sess
>90:00:16:01:8f:4a:f0 rp_pppoe_service file
>/tmp/pppoeserver/pppoe-server-options 10.0.0.13:10.0.0.119 nodetach
>noaccomp nopcomp
>27639 root 0 Z [pppd]
>30786 root 1140 S -sh
>30787 root 1132 R ps
>
>
>here some configs:
>
>root at x86:/# uname -a
>Linux x86.xyz.de 3.5.0-svn19532 #7 SMP Mon Jul 23 16:39:13 CEST 2012
>i586 GNU/Linux
>
>root at x86:~# cat /tmp/pppoeserver/pppoe-server-options
>nobsdcomp
>nodeflate
>nolzs
>nomppc
>nomppe
>auth
>refuse-eap
>refuse-pap
>refuse-chap
>refuse-mschap
>require-mschap-v2
>nopcomp
>default-mru
>default-asyncmap
>noipdefault
>defaultroute
>proxyarp
>noktune
>netmask 255.255.255.255
>ip-up-script /tmp/pppoeserver/ip-up
>ip-down-script /tmp/pppoeserver/ip-down
>lcp-echo-interval 5
>lcp-echo-failure 20
>idle 0
>ms-dns 10.x.x.x
>ms-dns 8.8.4.4
>ms-dns 192.168.200.1
>login
>plugin radius.so
>plugin radattr.so
>radius-config-file /tmp/pppoeserver/radius/radiusclient.conf
>
>root at x86:~# cat /tmp/pppoeserver/ip-down
>#!/bin/sh
>grep -v $PPPD_PID /tmp/pppoe_connected > /tmp/pppoe_connected.tmp
>mv /tmp/pppoe_connected.tmp /tmp/pppoe_connected
>grep -v $PEERNAME /tmp/pppoe_uptime > /tmp/pppoe_uptime.tmp
>mv /tmp/pppoe_uptime.tmp /tmp/pppoe_uptime
>CONTIME=`grep $PEERNAME /tmp/pppoe_peer.db | awk '{print $1}'`
>SENT=`grep $PEERNAME /tmp/pppoe_peer.db | awk '{print $2}'`
>RCVD=`grep $PEERNAME /tmp/pppoe_peer.db | awk '{print $3}'`
>CONTIME=$(($CONTIME+$CONNECT_TIME))
>SENT=$(($SENT+$BYTES_SENT))
>RCVD=$(($RCVD+$BYTES_RCVD))
>grep -v $PEERNAME /tmp/pppoe_peer.db > /tmp/pppoe_peer.db.tmp
>mv /tmp/pppoe_peer.db.tmp /tmp/pppoe_peer.db
>echo "$CONTIME $SENT $RCVD $PEERNAME" >> /tmp/pppoe_peer.db
>iptables -D INPUT -i $1 -j ACCEPT
>iptables -D FORWARD -i $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS
>--clamp-mss-to-pmtu
>iptables -D FORWARD -i $1 -j ACCEPT
>tc qdisc del root dev $1
>sleep 1
>tc qdisc del dev $1 ingres
>
>root at x86:~# cat /tmp/pppoeserver/radius/radiusclient.conf
>auth_order radius
>login_tries 4
>login_timeout 60
>nologin /etc/nologin
>issue /etc/issue
>servers /tmp/pppoeserver/radius/servers
>dictionary /etc/dictionary
>login_radius /usr/local/sbin/login.radius
>seqfile /var/run/radius.seq
>mapfile /etc/port-id-map
>default_realm
>radius_timeout 10
>radius_retries 3
>login_local /bin/login
>authserver 10.x.x.x:1812
>acctserver 10.x.x.x:1813
>
>
>i would call it a bug. any clues?
>
>
>regards
>Sash (DD-WRT)
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