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[Bug 356201] cannot stop openvpn: "unregister_netdevice: waiting for tun0 to become free. Usage count = 1"
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 28 Jan 2008 00:34:10 -0700 (MST)
  • Message-id: <20080128073410.4627FCC7B0@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=356201

User seife@xxxxxxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=356201#c3





--- Comment #3 from Stefan Seyfried <seife@xxxxxxxxxx> 2008-01-28 00:34:09 MST
---
some more observations:
Today, it did not hang. I had booted at home (WLAN interface "air", ipw2200
driver), started openvpn, had it running for two days, stopped openvpn this
morning. "stopping openvpn... failed". However, surprise - no "waiting for
interface...". Then i did "rmmod ipw2200" to conserve power, which first seemed
to hang. Looking in syslog showed me "waiting for interface air to become
free". When i just wanted to fire up syrq-t and then reboot, i found that it
eventually succeeded. So it might be some race condition hiding somewhere which
just gets exposed much more often recently?

Log messages:
Jan 28 06:43:49 susi openvpn[19419]: event_wait : Interrupted system call
(code=4)
Jan 28 06:43:49 susi openvpn[19419]: SIGTERM received, sending exit
notification to peer
Jan 28 06:44:42 susi klogd: [212744.599578] SysRq : HELP : loglevel0-8 reBoot
Crashdump tErm Full kIll saK showMem
Nice powerOff showPc show-all-timers(Q) unRaw Sync showTasks Unmount
shoW-blocked-tasks
Jan 28 06:45:49 susi network: Checking for the NetworkManager:
Jan 28 06:45:49 susi network: Checking for the NetworkManagerDispatcher:
Jan 28 06:45:49 susi network: NetControl System is active as well. Check your
config or restart network.
Jan 28 06:45:55 susi network: Checking for the NetworkManager:
Jan 28 06:45:55 susi network: Checking for the NetworkManagerDispatcher:
Jan 28 06:45:55 susi network: NetControl System is active as well. Check your
config or restart network.
Jan 28 06:46:01 susi smpppd[5454]: terminating on signal 15
Jan 28 06:46:02 susi ifdown: air device: Intel Corporation
PRO/Wireless 2200BG Network Connection (rev 0
5)
Jan 28 06:46:02 susi avahi-daemon[2504]: Withdrawing address record for
192.168.200.11 on air.
Jan 28 06:46:02 susi avahi-daemon[2504]: Leaving mDNS multicast group on
interface air.IPv4 with address 192.168.2
00.11.
Jan 28 06:46:02 susi avahi-daemon[2504]: Interface air.IPv4 no longer relevant
for mDNS.
Jan 28 06:46:02 susi avahi-daemon[2504]: Withdrawing address record for
fe80::212:f0ff:fe8b:e39f on air.
Jan 28 06:46:02 susi ifplugd(cable)[18545]: Exiting.
Jan 28 06:46:02 susi ifdown: cable device: Intel Corporation 82540EP
Gigabit Ethernet Controller (Mobile)
(rev 03)
Jan 28 06:46:02 susi ifdown: irda0
Jan 28 06:46:02 susi ifdown: No configuration found for irda0
Jan 28 06:46:02 susi ifdown: Nevertheless the interface will be
shut down.
Jan 28 06:46:03 susi ifdown: air device: Intel Corporation
PRO/Wireless 2200BG Network Connection (rev 0
5)
Jan 28 06:46:03 susi ifdown: cable device: Intel Corporation 82540EP
Gigabit Ethernet Controller (Mobile)
(rev 03)
Jan 28 06:46:03 susi ifdown: irda0
Jan 28 06:46:03 susi ifdown: No configuration found for irda0
Jan 28 06:46:03 susi ifdown: Nevertheless the interface will be
shut down.
Jan 28 06:46:05 susi network: Starting the NetworkManagerDispatcher
Jan 28 06:46:05 susi network: Starting the NetworkManager
Jan 28 06:46:05 susi smpppd[14743]: smpppd version 1.59 started
Jan 28 06:46:05 susi ifdown: Network interface is managed from NetworkManager
Jan 28 06:46:05 susi ifdown: NetworkManager cannot be advised to take down an
interface.
Jan 28 06:46:05 susi ifdown: Set up another interface instead.
Jan 28 06:46:16 susi klogd: [212869.190278] unregister_netdevice: waiting for
air to become free. Usage count = 1
Jan 28 06:46:26 susi klogd: [212879.441743] unregister_netdevice: waiting for
air to become free. Usage count = 1
Jan 28 06:46:33 susi syslog-ng[1988]: STATS: dropped 0


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