As my crystal ball is in the shop for regular maintenance, all I can point
you to is the Kernel Debugger:
http://developer.apple.com/documentation/Darwin/Conceptual/KEXTConcept/KEXTConceptDebugger/hello_debugger.html
On that subject, I recommend using Firewire KDP instead of ethernet. See the
FireWire SDK 23: FireWire SDK 23 for Mac OS X
Alex
On 30.04.2007, at 12:12, subodh singh wrote:
Hi guys,
We have developed a driver by subclassing it through
IOBlockStorage device such as it replaces IOBlockStorage Driver in
IORegistry. Its Working fine on all hardwares and OS 10.3.7 & above.
But problem is that it crshes on iMac power PC with OS 10.4.
And the Crash log is showing following error:-
Fri Mar 23 16:01:40 2007
Unresolved kernel trap(cpu 0): 0x300 - Data access
DAR=0x00000000054FC000 PC=0x0000000011A9D034
Latest crash info for cpu 0:
Exception state (sv=0x163BEC80)
PC=0x11A9D034; MSR=0x00009030; DAR=0x054FC000; DSISR=0x42000000;
LR=0x11A9CFF0; R1=0x054FBB30; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x11A9CFF0 0x00000000
backtrace terminated - unaligned frame address: 0x00000001
Kernel loadable modules in backtrace (with dependencies):
com.yourcompany.driver.PatchedBlockStorageDriver(1.0.0d1)@0x11a96000
dependency: com.apple.iokit.IOStorageFamily(1.3)@0x119e7000
dependency:
com.apple.iokit.IOCDStorageFamily(1.3)@0x11a7e000
Proceeding back via exception chain:
Exception state (sv=0x163BEC80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x117A8780)
PC=0x900075C8; MSR=0x0000F030; DAR=0x90259A3F; DSISR=0x40000000;
LR=0x90007118; R1=0xBFFFE660; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 7.0.0:
Wed Sep 24 15:48:39 PDT 2003; root:xnu/xnu-517.obj~1/RELEASE_PPC
panic(cpu 0): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x000833B8 0x0008389C 0x0001ED8C 0x00090800 0x00093A6C
Proceeding back via exception chain:
Exception state (sv=0x163BEC80)
PC=0x11A9D034; MSR=0x00009030; DAR=0x054FC000; DSISR=0x42000000;
LR=0x11A9CFF0; R1=0x054FBB30; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x11A9CFF0 0x00000000
backtrace terminated - unaligned frame address: 0x00000001
Kernel loadable modules in backtrace (with dependencies):
com.yourcompany.driver.PatchedBlockStorageDriver(1.0.0d1)@0x11a96000
dependency: com.apple.iokit.IOStorageFamily(1.3)@0x119e7000
dependency:
com.apple.iokit.IOCDStorageFamily(1.3)@0x11a7e000
Exception state (sv=0x117A8780)
PC=0x900075C8; MSR=0x0000F030; DAR=0x90259A3F; DSISR=0x40000000;
LR=0x90007118; R1=0xBFFFE660; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 7.0.0:
Wed Sep 24 15:48:39 PDT 2003; root:xnu/xnu-517.obj~1/RELEASE_PPC
*********
So plz advice me that what is the possible reason of this crash and
how can I solve this issue.
Thanks
Subodh
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