[desertmac]

Hello all. I am consistently getting a kernel panic in Tiger when using Wireless Modem and my Treo 600 as a wireless modem. I connect ok. Then several minutes into session, the session hangs. I go to the modem icon and select disconnect. It starts to disconnect but doesn't fully.

When I then try to restart, or sleep, I get a kernel panic.

Here's what shows up in the Log:

Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000060 PC=0x00000000004B5320
Latest crash info for cpu 0:
Exception state (sv=0x2D2A5C80)
PC=0x004B5320; MSR=0x00009030; DAR=0x00000060; DSISR=0x40000000; LR=0x004B3810; R1=0x1786BB90; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00000000 0x004B3810 0x000FB71C 0x000F5240 0x0025D690 0x0027C4E8
0x002A8604 0x000ABCB0 0x49080000
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOSerialFamily(8.0.0d28)@0x4b0000
Proceeding back via exception chain:
Exception state (sv=0x2D2A5C80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x2E10F000)
PC=0x9000232C; MSR=0x0000D930; DAR=0xE043D000; DSISR=0x42000000; LR=0x9006A048; R1=0xBFFFF6B0; XCP=0x00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.1.0: Tue May 10 18:16:08 PDT 2005; root:xnu-792.1.5.obj~4/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x00095564 0x00095A7C 0x0002683C 0x000A819C 0x000ABB00
Proceeding back via exception chain:
Exception state (sv=0x2D2A5C80)
PC=0x004B5320; MSR=0x00009030; DAR=0x00000060; DSISR=0x40000000; LR=0x004B3810; R1=0x1786BB90; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00000000 0x004B3810 0x000FB71C 0x000F5240 0x0025D690 0x0027C4E8
0x002A8604 0x000ABCB0 0x49080000
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOSerialFamily(8.0.0d28)@0x4b0000
Exception state (sv=0x2E10F000)
PC=0x9000232C; MSR=0x0000D930; DAR=0xE043D000; DSISR=0x42000000; LR=0x9006A048; R1=0xBFFFF6B0; XCP=0x00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.1.0: Tue May 10 18:16:08 PDT 2005; root:xnu-792.1.5.obj~4/RELEASE_PPC

In the sticky on panics, it says the crucial line is com.apple.iokit.IOSerialFamily(8.0.0d28)@0x4b0000. But I don't know the implications of this line or what I can do to fix this.

Any help appreciated.

[Detrius]

It seems like you have pinned it down about as much as you are likely to be able to. The panic log matches up with what you are doing. If this is a bug, the fix will likely come from Apple. It's possible the kernel extension is corrupt. If so, you would need to look into how it became corrupt--overlapping files due to corrupt directory structure, bad RAM, bad blocks on the hard drive, faulty OS install disk, etc...

[desertmac]

Originally Posted by Detrius

It seems like you have pinned it down about as much as you are likely to be able to. The panic log matches up with what you are doing. If this is a bug, the fix will likely come from Apple. It's possible the kernel extension is corrupt. If so, you would need to look into how it became corrupt--overlapping files due to corrupt directory structure, bad RAM, bad blocks on the hard drive, faulty OS install disk, etc...

Thanks Detrius. If the kernel extension is corrupt, is there a way to replace it without doing a complete reinstall?