Airport causes kernel panic!

[igelkotten]

Hi,
I've gotten kernel panics quite a few times now. First I thought it was only a one time thing, but I was wrong. This kernel panic happens when I am browsing the web, downloading stuff at a high speed while chatting with friends on Adium. I notice that the internet aren't working, I can't open any web sites. When checking my downloads, I see that they are downloading at 0 kbps (= nothing is downloading or uploading). When trying to send a message to someone on the chat, all I get is messages saying there's some connection problem. A quick look on the AirPort status on the menu bar shows me that I have a full internet connection. Then the screen darkens, a grey box comes up telling me to restart my computer by holding the power button. The text is in 4-5 different languages.

OS: Mac OS X Leopard / 10.5
Web browser: Safari
P2P application: Azureus (latest, aka Vuze but in advanced mode)
Chat application: Adium

When rebooting the computer, a error report comes up with text.
Mon Dec 24 21:59:23 2007
panic(cpu 0 caller 0x0039CD77): "m_free: freeing an already freed mbuf"@/SourceCache/xnu/xnu-1228.0.2/bsd/kern/uipc_mbuf.c:2742
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x20fc36e8 : 0x12b0e1 (0x455670 0x20fc371c 0x133238 0x0)
0x20fc3738 : 0x39cd77 (0x48e03c 0x1cf0e300 0x3b66f01c 0x2905c00)
0x20fc3778 : 0x39d073 (0x1cde8d00 0x8 0x20fc37c8 0x1)
0x20fc3798 : 0x9dbb87 (0x1cf0e300 0x0 0x20 0x401699)
0x20fc3908 : 0x9dbec5 (0x1287f2c8 0x12881150 0x2135a4 0x2135a4)
0x20fc3a58 : 0x9dc254 (0x1297c004 0x0 0x40 0x19ccc1)
0x20fc3ba8 : 0x9dc354 (0x1287f4c0 0x0 0x1 0x824caa)
0x20fc3bc8 : 0x9f196c (0x1287f4c0 0xe00002c7 0x20fc3be8 0x41c079)
0x20fc3be8 : 0x41da73 (0x1287f000 0x20fc3c78 0x0 0x0)
0x20fc3c38 : 0x999e6d (0x2f19a80 0x999e70 0x20fc3c78 0x0)
0x20fc3c68 : 0x409b1a (0x1287f000 0x0 0xe0000250 0x29dcc00)
0x20fc3cb8 : 0x440754 (0x29dcc00 0xe0000250 0x2ede340 0x20fc3ce8)
0x20fc3d18 : 0x409c35 (0x2ede340 0x20fc3dc4 0x20fc3d48 0x1a677c)
0x20fc3d58 : 0x4415cf (0x20fc3dc4 0x2968380 0x4406e2 0x20fc3dc4)
0x20fc3e08 : 0x42dea5 (0x29dcc00 0x0 0x5cacd6a 0x1e1e)
0x20fc3e58 : 0x1ac72d (0x0 0x8 0x20fc3e98 0x2111e8)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AirPort.Atheros(300.22)@0x9b6000->0xa40fff
dependency: com.apple.iokit.IO80211Family(200.7)@0x998000
dependency: com.apple.iokit.IOPCIFamily(2.4)@0x63c000
dependency: com.apple.iokit.IONetworkingFamily(1.6.0)@0x64c000
com.apple.iokit.IO80211Family(200.7)@0x998000->0x9b5fff
dependency: com.apple.iokit.IONetworkingFamily(1.6.0)@0x64c000

BSD process name corresponding to current thread: launchd

Mac OS version:
9B18

Kernel version:
Darwin Kernel Version 9.1.0: Wed Oct 31 17:46:22 PDT 2007; root:xnu-1228.0.2~1/RELEASE_I386
System model name: MacBook2,1 (Mac-F4208CAA)


From this text I can see the line; "com.apple.driver.AirPort.Atheros(300.22)@0x9b6000->0xa40fff" and that's why i suspect AirPort. I have googled for an answer to my question, but I haven't gotten any. Anyone who has the same problem, or even better has a solution?

Best Regards,
Igelkotten

 

[bobmc1239]

Kernel panics are awesome as they can be caused by anything, hardware or software. Here are a few things to try:

Create a new user account in system preferences and then log into it. See if your computer kernel panics when you attempt to use the internet.

If it doesn't KP there is likely a setting in your user account that went bad. Try renaming or deleting the .plist files related to your internet/p2p/chat programs in /library/preferences.

If your computer continues to KP in a new user account, you are likely correct that your Airport card is giving you issues. Probably time to visit your local Authorized Apple service provider.

 

[kch]

This is a common problem, and it will hopefully be fixed in 10.5.2

It only comes up for me when i'm using the wifi extensively and then let the display go to sleep. After that, bam, KP.

but yeah. you're not alone. it's a big problem.

 

[Sun Baked]

Azureus is the problem, happens when running on wireless.

If people must use this app switch to ethernet, if you still run into problems you might look at Little Snitch Next.

---

There are a lot of problems with the Airport drivers, this is likely be where you current problem lays -- it isn't a hardware issue.

This is just one symptom of a big wireless driver issue.

 

[kch]

Azureus is the problem, happens when running on wireless.

If people must use this app switch to ethernet, if you still run into problems you might look at Little Snitch Next.

---

There are a lot of problems with the Airport drivers, this is likely be where you current problem lays -- it isn't a hardware issue.

This is just one symptom of a big wireless driver issue.

it's not just the torrent software. it happened to me when i was ddl'ing some stuff through safari. it's caused by any strenuous downloading; not just torrents.

 

[robert05au]

Do you have any third party system hacks running?

Do you have any third party add-ons for safari?

Try these steps it may give a better clue to what it really is.

Use disk utility to check the HD for errors these can at times cause kernal panics.

Also this may take a little time run repair permissions.

Also try uninstalling Azureus and try using Transmission.

Also if you have installed the security update 2007-009 v1.1 definately run permission repair the flash player plugin which is part of it screws some net related perms.

Also which type of encryption are you using for the wireless network?

Any other info which maybe of help would also be good to post as it makes things easier to work out the exact cause of the problem/s.

 

[igelkotten]

I have no third party system hacks, unless growl is one.

I have Inquisitor and AdBlock installed for Safari.

I don't really get how to run those permission stuff, is it through disk utility?

I have a WEP-password, and I login using 802.1x. Hope that answers the question of which encryption I use.

As said, the kernal panic occurs when I'm downloading stuff, browsing and chatting at the same time, i.e. using a lot (if not all) of my bandwidth. I re-installed Leopard a couple of days ago as a try to fix the problem, but it didn't work.

 

[Sun Baked]

>igelkotten

Nothing you can do to fix the Airport problems, Apple has a bunch of them and at least you are getting a connection fast enough to cause problems.

For some, their airport get slower and slower until it stops working.

Hopefully apple fixes the problem or releases an Airport Base Station Firmware update -- though that won't help people with non-Apple routers.

 

[writeous]

AZ gave me a few kernel panics, so I stopped using it all together and switched to transmission.