Date: Fri, 7 Apr 2006 07:36:24 GMT From: Andrey Sverdlichenko <blaze@ruddy.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/95462: Memory leak in ieee 802.11 stack Message-ID: <200604070736.k377aOtq021888@www.freebsd.org> Resent-Message-ID: <200604070740.k377eHYi096010@freefall.freebsd.org>
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>Number: 95462
>Category: kern
>Synopsis: Memory leak in ieee 802.11 stack
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Apr 07 07:40:16 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Andrey Sverdlichenko
>Release: 6.0-RELEASE
>Organization:
>Environment:
FreeBSD toaster.infosec.ru 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov 3 09:36:13 UTC 2005 root@x64.samsco.home:/usr/obj/usr/src/sys/GENERIC i386
>Description:
In hostap mode after a some time (12-24 hours under heavy traffic) memory use by IEEE 802.11 node table grows up and network stops: no traffic passing, clients can't connect. It does not depend on WEP, WPA or open network mode.
%vmstat -m | grep 80211
80211node 7919 7919K - 13960 512,1024
%ifconfig
ath0: flags=8d43<UP,BROADCAST,RUNNING,PROMISC,OACTIVE,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::215:e9ff:fe42:4888%ath0 prefixlen 64 scopeid 0x1
ether 00:15:e9:42:48:88
media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
status: associated
ssid toaster-wep channel 2 bssid 00:15:e9:42:48:88
authmode OPEN privacy ON deftxkey 1 wepkey 1:40-bit txpowmax 36
protmode CTS dtimperiod 1 bintval 100
rl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
inet6 fe80::2d0:68ff:fe08:2cec%rl0 prefixlen 64 scopeid 0x3
inet 10.2.0.71 netmask 0xffff0000 broadcast 10.2.255.255
ether 00:d0:68:08:2c:ec
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
inet 127.0.0.1 netmask 0xff000000
bridge0: flags=8041<UP,RUNNING,MULTICAST> mtu 1500
ether ac:de:48:fe:b7:e0
priority 32768 hellotime 2 fwddelay 15 maxage 20
member: ath0 flags=3<LEARNING,DISCOVER>
member: rl0 flags=3<LEARNING,DISCOVER>
%dmesg | grep ath0
ath0: <Atheros 5212> mem 0xf8000000-0xf800ffff irq 16 at device 0.0 on pci1
ath0: Ethernet address: 00:15:e9:42:48:88
ath0: mac 7.9 phy 4.5 radio 5.6
There are also about 30 "ath0: device timeout" records in dmesg.
>How-To-Repeat:
Set up hostap and push some traffic on it.
>Fix:
none
>Release-Note:
>Audit-Trail:
>Unformatted:
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