[Gossamer]

I have a Core Duo 2.0 iMac/400GB/2GB here at work that's randomly kernel panicing. It's happened a few times right in the middle of nothing specific, and it will often happen right after rebooting while trying to log in. I ran Techtool and the Apple Hardware Test and neither found anything wrong. I repaired permissions and verified the startup volume, and both were fine. Here's the text from two separate panics:

panic(cpu 0 caller 0x0035BEAC): freeing free mbuf
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x254a3c18 : 0x128d1f (0x3c9540 0x254a3c3c 0x131df4 0x0)
0x254a3c58 : 0x35beac (0x3e9c7c 0x0 0x254a3c88 0x1a1ec0)
0x254a3c98 : 0x6de4a4 (0x36f98600 0x4e 0x254a3cc8 0x6e1e3a)
0x254a3cb8 : 0xa44454 (0x239a6000 0x36f98600 0x0 0x6e12fe)
0x254a3ce8 : 0xa42ad0 (0x239a6000 0x36f98600 0x0 0x0)
0x254a3d08 : 0xa4e87d (0x239a6000 0x36f99500 0x4e 0x1)
0x254a3ea8 : 0xa45c7c (0x239a6000 0x3aa6c80 0x40000000 0x133b25)
0x254a3f08 : 0x398a1f (0x239a6000 0x3aa6c80 0x1 0x3968e84)
0x254a3f58 : 0x397bf1 (0x3aa6c80 0x135ec3 0x0 0x3968e84)
0x254a3f88 : 0x397927 (0x3aa8f80 0x0 0x4030 0xf03)
0x254a3fc8 : 0x19a74c (0x3aa8f80 0x0 0x19d0b5 0x4725624) Backtrace terminated-invalid frame pointer 0x0
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleYukon(1.0.7b3)@0xa40000
dependency: com.apple.iokit.IONetworkingFamily(1.5.1)@0x6d7000
dependency: com.apple.iokit.IOPCIFamily(2.1)@0x57c000
com.apple.iokit.IONetworkingFamily(1.5.1)@0x6d7000

Kernel version:
Darwin Kernel Version 8.8.1: Mon Sep 25 19:42:00 PDT 2006; root:xnu-792.13.8.obj~1/RELEASE_I386

Model: iMac4,1, BootROM IM41.0055.B08, 2 processors, Intel Core Duo, 2 GHz, 2 GB
Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 1 GB, DDR2 SDRAM, 667 MHz
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x89), 4.80.76.1
Bluetooth: Version 1.7.9f12, 2 service, 1 devices, 1 incoming serial ports
Network Service: Built-in Ethernet, Ethernet, en0
Network Service: AirPort, AirPort, en1
Network Service: Parallels Host-Guest, Ethernet, en2
Network Service: Parallels NAT, Ethernet, en3
Serial ATA Device: Hitachi HDS725050KLA360, 465.76 GB
Parallel ATA Device: MATSHITADVD-R UJ-846
USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
USB Device: Bluetooth HCI, Up to 12 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
USB Device: Hub, Up to 12 Mb/sec, 500 mA
USB Device: USB-PS/2 Optical Mouse, Logitech, Up to 1.5 Mb/sec, 500 mA
USB Device: Logitech USB Keyboard, Logitech, Up to 1.5 Mb/sec, 500 mA

And again:

panic(cpu 0 caller 0x001A429B): Unresolved kernel trap (CPU 0, Type 14=page fault), registers:
CR0: 0x8001003b, CR2: 0x00000618, CR3: 0x00df8000, CR4: 0x000006e0
EAX: 0x00000618, EBX: 0x36e98b00, ECX: 0x00000618, EDX: 0x36f1cd14
CR2: 0x00000618, EBP: 0x2537bb88, ESI: 0x36e98b00, EDI: 0x36e98b00
EFL: 0x00010246, EIP: 0x0035e6ed, CS: 0x00000008, DS: 0x00000010

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x2537b9d8 : 0x128d08 (0x3cb134 0x2537b9fc 0x131de5 0x0)
0x2537ba18 : 0x1a429b (0x3d0e4c 0x0 0xe 0x3d0670)
0x2537bb28 : 0x19ada4 (0x2537bb3c 0x6 0x2537bb58 0xe)
0x2537bb88 : 0x35e726 (0x36e98b00 0x618 0x2537bbb8 0x3bdfbd)
0x2537bba8 : 0x35c362 (0x36e98b00 0x0 0x137bbf8 0x0)
0x2537bbc8 : 0x35c6aa (0x36e98b00 0x0 0x0 0x1)
0x2537bbe8 : 0x944729 (0x36e98b00 0x18 0x137bc28 0x944369)
0x2537bc28 : 0x995c6f (0x3e5dac0 0x36e98b00 0x0 0x0)
0x2537be78 : 0x9960f4 (0x0 0x4b0010 0x2537bed8 0x1a26ce)
0x2537bed8 : 0x949fa3 (0x23822000 0x0 0x0 0x3954c80)
0x2537bf08 : 0x39a463 (0x3e5b400 0x3e49000 0x1 0x3aac050)
0x2537bf58 : 0x399635 (0x3e49000 0x135eb4 0x0 0x3aac050)
0x2537bf88 : 0x39936b (0x3f7c3c0 0x3f7c3c0 0x4529bc 0xffffffff)
0x2537bfc8 : 0x19ac1c (0x3f7c3c0 0x0 0x19e0b5 0x3944eec) Backtrace terminated-invalid frame pointer 0x0
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AirPortBrcm43xx(223.79)@0x943000
dependency: com.apple.iokit.IONetworkingFamily(1.5.1)@0x6f6000
dependency: com.apple.iokit.IOPCIFamily(2.2)@0x572000
dependency: com.apple.iokit.IO80211Family(153.2)@0x926000

Kernel version:
Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386

Any suggestions short of reinstalling OS X? I installed a fresh copy last June so it's not that old.

[seanc]

You've tried the RAM right?

[Gossamer]

Originally Posted by seanc 

You've tried the RAM right?

Both the extended Apple Hardware Test and Techtool tested the RAM and said it was good. I might be able to run Rember or Memtest tomorrow and see if either of those find a problem.

[brokenjago]

Well, it doesn't hurt to remove any third-party RAM from the machine, to check it out.

[seanc]

Yeah I had meant swapping out RAM.

[Big Mac]

It looks like an internal network hardware issue.

[Gossamer]

It was ordered straight from Apple with the 2GB of RAM in it.

[Gossamer]

Another two kernel panics today, one cause me to lose part of my lab report. I'm getting ticked off.

panic(cpu 0 caller 0x0035D913): freeing free mbuf
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x25313bf8 : 0x128d08 (0x3cb134 0x25313c1c 0x131de5 0x0)
0x25313c38 : 0x35d913 (0x3eb914 0x0 0x0 0x4b0000)
0x25313c78 : 0x9154a4 (0x36e9df00 0x4e 0x25313ca8 0x918e3a)
0x25313c98 : 0xa3847c (0x239a3000 0x36e9df00 0x0 0x9182fe)
0x25313cc8 : 0xa366f8 (0x239a3000 0x36e9df00 0x0 0x0)
0x25313ce8 : 0xa411e2 (0x239a3000 0x36e55a00 0x4e 0x1)
0x25313e98 : 0xa3a785 (0x239a3000 0x3ab4e80 0x40000000 0x39647bc)
0x25313f08 : 0x39a463 (0x239a3000 0x3ab4e80 0x1 0x39647bc)
0x25313f58 : 0x399635 (0x3ab4e80 0x135eb4 0x0 0x39647bc)
0x25313f88 : 0x39936b (0x3ab2e80 0x5d891c 0x4530c4 0x3fa77d0)
0x25313fc8 : 0x19ac1c (0x3ab2e80 0x0 0x19e0b5 0x3961cfc) Backtrace terminated-invalid frame pointer 0x0
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleYukon(1.0.11b2)@0xa34000
dependency: com.apple.iokit.IONetworkingFamily(1.5.1)@0x90e000
dependency: com.apple.iokit.IOPCIFamily(2.2)@0x57f000
dependency: com.apple.iokit.IOACPIFamily(1.2.0)@0x636000
com.apple.iokit.IONetworkingFamily(1.5.1)@0x90e000

Kernel version:
Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386

[scaught]

Do you have that POS Logitech driver installed for that Logitech keyboard? I had it installed on a 24"CD2 imac and got frequent KPs. I switched to USBOverdrive and all is well.

[Gossamer]

I do...maybe I'll give USBO a shot and see if they quit. It's so weird though, as I hadn't had any problems for a good three weeks then suddenly I get two today.

[scaught]

Ya. There's a couple different versions of the logitech driver out there. Have you tried this one? This one was recommended to me at the same time someone else reminded me of USBOverdrive (which I jumped on since I used to use it back in the OS9 days).

http://www.logitech.com/pub/techsupp...mac/lcc211.dmg

After the KPs I had, I didn't even feel like trying another logitech driver. The USBOverdrive has worked well for me.

That "no problems until very recently" is weird though. When I installed that driver, I had problems within days.

[Gossamer]

Okay, I uninstalled the driver and added USBO. The iTunes buttons and volume control on my keyboard no longer work anymore, but I guess I can live with that. I suppose I'll just wait a few weeks and see if I get anymore KPs. Until then I'll just have to save often.

[Laminar]

Still getting them, two in the same number of days.

panic(cpu 0 caller 0x0035D913): freeing free mbuf
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x254a3da8 : 0x128d08 (0x3cb134 0x254a3dcc 0x131de5 0x0)
0x254a3de8 : 0x35d913 (0x3eb914 0x1 0x254a3f08 0x125066)
0x254a3e28 : 0x9174a4 (0x370cc900 0x239b2000 0x239b2000 0x239b2000)
0x254a3e48 : 0xa4447c (0x239b2000 0x370cc900 0x0 0x6)
0x254a3e78 : 0xa426f8 (0x239b2000 0x370cc900 0x0 0x3aad280)
0x254a3e98 : 0xa468c2 (0x239b2000 0x0 0x40000000 0x1a3010)
0x254a3f08 : 0x39a463 (0x239b2000 0x3aad280 0x1 0x3973b20)
0x254a3f58 : 0x399635 (0x3aad280 0x113 0x254a3f78 0x4b0038)
0x254a3f88 : 0x39936b (0x3ab18c0 0x24 0x60 0xffffffff)
0x254a3fc8 : 0x19ac1c (0x3ab18c0 0x0 0x19e0b5 0x3970e8c) Backtrace terminated-invalid frame pointer 0x0
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleYukon(1.0.11b2)@0xa40000
dependency: com.apple.iokit.IONetworkingFamily(1.5.1)@0x910000
dependency: com.apple.iokit.IOPCIFamily(2.2)@0x5a5000
dependency: com.apple.iokit.IOACPIFamily(1.2.0)@0x651000
com.apple.iokit.IONetworkingFamily(1.5.1)@0x910000

Kernel version:
Darwin Kernel Version 8.9.1: Thu Feb 22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386

Model: iMac4,1, BootROM IM41.0055.B08, 2 processors, Intel Core Duo, 2 GHz, 2 GB
Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 1 GB, DDR2 SDRAM, 667 MHz
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x89), Broadcom BCM43xx 1.0 (4.80.79.1)
Bluetooth: Version 1.7.14f14, 2 service, 1 devices, 1 incoming serial ports
Network Service: Built-in Ethernet, Ethernet, en0
Network Service: AirPort, AirPort, en1
Network Service: Parallels Host-Guest, Ethernet, en2
Network Service: Parallels NAT, Ethernet, en3
Serial ATA Device: Hitachi HDS725050KLA360, 465.76 GB
Parallel ATA Device: MATSHITADVD-R UJ-846
USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
USB Device: Hub, Up to 12 Mb/sec, 500 mA
USB Device: USB-PS/2 Optical Mouse, Logitech, Up to 1.5 Mb/sec, 500 mA
USB Device: Logitech USB Keyboard, Logitech, Up to 1.5 Mb/sec, 500 mA
USB Device: Bluetooth HCI, Up to 12 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA

No one has any ideas?

[gene]

Did anyone find a solution? I am having the same issue on a 15" MBPro C2Duo.
Thanks.