What is CIJScannerRegist? I've gotten two Kernel panics in the past 2 hrs

Question

My Mac Pro has been stable for over 2 years now. I've just gotten two kernel panics in the last 2 hours, both related to a process called CIJScannerRegist. Who owns this process and what does it do? I did a ps aux on it and at least found where it is located:
$ ps aux | grep CIJScannerRegist
phoppes 406 0.0 0.0 2439324 1100 s000 RV+ 3:01PM 0:00.05 grep CIJScannerRegist
phoppes 260 0.0 0.1 2764532 5664 ?? S 2:24PM 0:00.84 /Library/Image Capture/Support/LegacyDeviceDiscoveryHelpers/CIJScannerRegister.app/Contents/Ma cOS/CIJScannerRegister -psn0106522
I still don't know what it does. Any help would be appreciated.
nterval Since Last Panic Report: 8611962 sec
Panics Since Last Report: 1
Anonymous UUID: 09E7ADCF-9058-46D2-B6C6-5BE891870652
Mon Mar 1 13:39:08 2010
panic(cpu 2 caller 0x226820): "thread_invoke: preemption_level -1, possible cause: unlocking an unlocked mutex or spinlock"@/SourceCache/xnu/xnu-1486.2.11/osfmk/kern/sched_prim.c:1471
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x7de83c08 : 0x21b2bd (0x5cf868 0x7de83c3c 0x223719 0x0)
0x7de83c58 : 0x226820 (0x5876cc 0xffffffff 0x587664 0x226412)
0x7de83cd8 : 0x226f27 (0x131ec01c 0x27a317ea 0x140aa8c0 0x6)
0x7de83d48 : 0x226fb5 (0x487f93 0x0 0x0 0x2a0596)
0x7de83d68 : 0x487d9b (0x487f93 0x11321f10 0x7de83d88 0x2a0596)
0x7de83dd8 : 0x494e49 (0x0 0x0 0x4950dd 0x0)
0x7de83ed8 : 0x4956a6 (0x0 0x1 0x131e94c0 0x0)
0x7de83f78 : 0x4ee947 (0xfebc2a0 0x128d4068 0x131e9494 0x1)
0x7de83fc8 : 0x29e3fd (0x128d4064 0x0 0x10 0x0)
BSD process name corresponding to current thread: CIJScannerRegist
Message was edited by: rimcrazy

Answer 1

Ok.. I have one question answered but it brings up another. For anyone else that is having this issue, CIJScannerRegist is some daemon that is getting kicked off on boot. At the moment I don't know WHY it is getting started but I have found this. The application is located at: /Library/Image Capture/Support/LegacyDeviceDiscoveryHelpers/CIJScannerRegister . This is an app related to Canon All-In-One printers. I have a Canon Pixima MP800R Scanner/Printer. For some strange reason that escapes me all of the sudden this is causing Kernel Panics. I have a New MBP and an older Mac Pro. Both have SL 10.6.2 installed. Both have the Canon Driver installed. I found that both had an earlier version so I downloaded the latest driver from the Canon website. The one you want is the 45.3Mb file named mp800rosxns10ea7-3.dmg. This has the printer/scanner/network all rolled into one.
What is very curious is on boot my laptop (which does not kernel panic) boots but the process CIJScannerRegist does NOT start. On my desktop however I get the following two additional processes that are running:
$ ps aux | grep Image
phoppes 702 0.1 0.0 2435032 532 s000 R+ 8:46PM 0:00.01 grep Image
root 265 0.0 0.0 2456224 1688 ?? Ss 8:35PM 0:00.09 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/hdiejectd
phoppes 261 0.0 0.1 2491676 4944 ?? Ss 8:35PM 0:00.27 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/diskimages-hel per -uuid B5F84C01-757E-463D-9D2B-03CB0A1E71F8 -post-exec 4
phoppes 257 0.0 0.1 2765876 5492 ?? S 8:35PM 0:00.28 /Library/Image Capture/Support/LegacyDeviceDiscoveryHelpers/CIJScannerRegister.app/Contents/Ma cOS/CIJScannerRegister -psn0118813
phoppes 254 0.0 0.1 2774092 8360 ?? S 8:35PM 0:00.33 /System/Library/Image Capture/Support/Image Capture Extension.app/Contents/MacOS/Image Capture Extension -psn0110619
$ kill -9 257 254
$ ps aux | grep Image
root 265 0.0 0.0 2456224 1684 ?? Ss 8:35PM 0:00.10 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/hdiejectd
phoppes 261 0.0 0.1 2491676 4944 ?? Ss 8:35PM 0:00.27 /System/Library/PrivateFrameworks/DiskImages.framework/Resources/diskimages-hel per -uuid B5F84C01-757E-463D-9D2B-03CB0A1E71F8 -post-exec 4
phoppes 717 0.0 0.0 2435032 484 s000 R+ 8:50PM 0:00.00 grep Image
You can see process 257 and 254 were started on boot. If I kill both process, I don't get a kernel panic. What I would like to know is what in blue blazes is starting the processes? If I go under System Pref's on BOTH machines, under Login Items there is the Canon IJ Network Scan Utility but only on my Mac Pro am I getting these additional two processes. I did a ps aux | grep Scan and I see the network Scan utility. That is a different process. Something is starting this CIJScannerRegist process. What I would like to do is simply fix that this process is getting started but I'm not sure where in the boot process that this is getting kicked in.
So for anyone else with this issue, the hack fix is do a ps aux | grep Image in a terminal window. Get the process ID of CIJScannerRegist and then do a kill -9 ID# where ID# is the process id you got from the first command. That will stop the kernel panics but still doesn't explain why they are getting started.
I will stop this thread and make a new post on the process as that is really a different question.