Re: NetworkManagerDispatcher Has Disappearred and so has wireless connection

[Dan Williams <dcbw redhat com>]

On Sat, 2008-07-19 at 10:34 -0400, Rick Bilonick wrote:
> I've been using F8 on my "main" laptop since January and have F8 running
> on a total of 4 systems (2 of them laptops). F8 is up to date on the
> "main" laptop and I just accessed my home network (WEP) and office
> network (WPA) on Wednesday. NM has been working OK since I installed F8.
> Starting yesterday, I cannot connect to either network. I've noticed
> that NetworkManagerDispatcher (usually visible under services) is gone
> (NetworkManager is still there). I'm also getting an SELinux warning
> message about NetworkManager (never had one before). When I do:

The dispatcher as a service has been replaced with a callout that
preserves the same functionality but also enhances it to include VPN
changes as well.  You shouldn't notice any functional changes since your
dispatcher scripts will still be executed with the same arguments and
the location hasn't changed.  It's just activated on-demand right now
and quits when it's not used, so you don't waste memory all the time
when the dispatcher doesn't have anything to do.

> [root localhost ~]# iwlist wlan0 scan
> wlan0     No scan results
> 
> as root, it says "No scan results" even though there are a bunch of
> networks available. This used to work and show me what networks are
> available. The other laptop has not been updated in a couple of weeks
> BUT NM etc. all work fine - I have no problem connecting to the networks
> using it.

That's a driver issue then... if you _know_ there are APs around, but
the driver doesn't report them with iwlist, there's something wrong in
the kernel.  Have you tried the b43 driver instead of ndiswrapper?

Dan

> I'm using the "main" laptop now but I'm connected via a wired ethernet
> connection.
> 
> [root localhost ~]# uname -r
> 
> "yum info NetworkManager" shows:
> 
> 2.6.25.10-47.fc8
> Name   : NetworkManager
> Arch   : i386
> Epoch  : 1
> Version: 0.7.0
> Release: 0.6.9.svn3675.fc8
> Size   : 2.6 M
> Repo   : installed
> Summary: Network connection manager and user applications
> 
> [root localhost ~]# modprobe -l | grep ndis
> /lib/modules/2.6.25.10-47.fc8/extra/ndiswrapper/ndiswrapper.ko
> /lib/modules/2.6.25.10-47.fc8/kernel/drivers/net/wireless/rndis_wlan.ko
> /lib/modules/2.6.25.10-47.fc8/kernel/drivers/net/usb/rndis_host.ko
> 
> I'm using a BCM4318 (it's been working OK for 3 years). It shows up as
> usual in the network config gui.
> 
> [root localhost ~]# dmesg | grep 4318
> hpet0: 3 64-bit timers, 14318180 Hz
> wlan0: ethernet device 00:14:a5:09:f5:28 using NDIS driver: bcmwl5,
> version: 0x3642e00, NDIS version: 0x501, vendor: 'NDIS Network Adapter',
> 14E4:4318.5.conf
> 
> [root localhost ~]# dmesg | grep ndis
> ndiswrapper version 1.53 loaded (smp=yes, preempt=no)
> ndiswrapper: driver bcmwl5 (Broadcom,12/22/2004, 3.100.46.0) loaded
> ndiswrapper: using IRQ 19
> usbcore: registered new interface driver ndiswrapper
> 
> [root localhost ~]# ifconfig wlan0
> wlan0     Link encap:Ethernet  HWaddr 00:14:A5:09:F5:28  
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>           Interrupt:19 Memory:dfdfe000-dfe00000 
> 
> 
> Any ideas on what has gone wrong? I'm stumped. I don't know what to make
> of the fact that "iwlist wlan0 scan" doesn't work anymore. If I plug an
> ethernet cable in, NM does connect right away but the wireless is all
> gone.
> 
> Rick B.
> 
> P.S. Here is the SELinux info 
> 
> Summary:
> 
> SELinux is preventing NetworkManager (NetworkManager_t) "setsched" to
> <Unknown>
> (NetworkManager_t).
> 
> Detailed Description:
> 
> SELinux denied access requested by NetworkManager. It is not expected
> that this
> access is required by NetworkManager and this access may signal an
> intrusion
> attempt. It is also possible that the specific version or configuration
> of the
> application is causing it to require additional access.
> 
> Allowing Access:
> 
> You can generate a local policy module to allow this access - see FAQ
> (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can
> disable
> SELinux protection altogether. Disabling SELinux protection is not
> recommended.
> Please file a bug report
> (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi)
> against this package.
> 
> Additional Information:
> 
> Source Context                system_u:system_r:NetworkManager_t:s0
> Target Context                system_u:system_r:NetworkManager_t:s0
> Target Objects                None [ process ]
> Source                        NetworkManager
> Source Path                   /usr/sbin/NetworkManager
> Port                          <Unknown>
> Host                          (I deleted this)
> Source RPM Packages           NetworkManager-0.7.0-0.6.9.svn3675.fc8
> Target RPM Packages           
> Policy RPM                    selinux-policy-3.0.8-109.fc8
> Selinux Enabled               True
> Policy Type                   targeted
> MLS Enabled                   True
> Enforcing Mode                Enforcing
> Plugin Name                   catchall
> Host Name                     (I deleted this)
> Platform                      Linux eei243.eei.upmc.edu 2.6.25.10-47.fc8
> #1 SMP
>                               Mon Jul 7 18:39:51 EDT 2008 i686 i686
> Alert Count                   9
> First Seen                    Thu 10 Jul 2008 08:12:44 AM EDT
> Last Seen                     Fri 18 Jul 2008 09:00:29 AM EDT
> Local ID                      3191f79b-d63f-42c9-bd82-6e838bd18a7d
> Line Numbers                  
> 
> Raw Audit Messages            
> 
> host=(I deleted this) type=AVC msg=audit(1216386029.511:24): avc:
> denied  { setsched } for  pid=2591 comm="NetworkManager"
> scontext=system_u:system_r:NetworkManager_t:s0
> tcontext=system_u:system_r:NetworkManager_t:s0 tclass=process
> 
> host=(I deleted this) type=SYSCALL msg=audit(1216386029.511:24):
> arch=40000003 syscall=156 success=no exit=-13 a0=a1f a1=0 a2=bf970614
> a3=b7f506c0 items=0 ppid=1 pid=2591 auid=4294967295 uid=0 gid=0 euid=0
> suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295
> comm="NetworkManager" exe="/usr/sbin/NetworkManager"
> subj=system_u:system_r:NetworkManager_t:s0 key=(null)
> 
> 
> 
> 
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