Ipad 2 kernel panic

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8 points

Ipad 2 kernel panic

Ipad seems to be shot. Upgraded to the latest iOS and within a week it started going into endless reboot loops. Tried resetting and restoring in normal and DFU modes. No joy. Now the iPad is stuck on the apple logo during bootup.

Brought it to two different apple service centres and they did the same thing. Restoring it didn't work. One of the service guys even got it to go into kernel panic, during the restore which was something he said he'd never seen before.

Now I'm not particularly computer savvy, but I did manage to snap some pictures of the error messages when it went into kernel panic. Don't know if there was more that scrolled off the screen before I spotted it. If anyone has any ideas about how to retrieve error logs from an iPad that won't boot, please let me know.

Posting what I saw on the screen for those wizards out there. Can anyone tell me what it means?

Debugger message: panic

OS version: Not set yet

Kernel version: Darwin Kernel version 14.0.0: Fri Mar 28 21:15:11 PDT 2014; root: xnu-2423.10.70-1/RELEASE_ARM_S5L8948X

iBoot version: iBoot-1940.10.50

secure boot?: YES

Paniclog version: 2

Kernel slide: 0x00000000014c00000

Kernel text base: 0x94c01000

Epoch Time: sec usec

Boot : 0x00000000 0x00000000

Sleep : 0x00000000 0x00000000

Wake : 0x00000000 0x00000000

Calendar : 0x00000cf2 0x000002e39

Panicked task 0x0009dc00: 71315 pages, 8 threads: unknown task

panicked thread: 0x94f4a940, backtrace: 0x891c3b74

panic: We are hanging here...000 far: 0x00000000 pc: 0x0000000000000000

iPad 2

Posted on Jun 6, 2014 8:14 PM

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Answer 1

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the shocker Author

Level 1

8 points

Jun 29, 2014 11:35 PM in response to the shocker

Suspect this might only be interesting to Apple engineers out there. Is there anyone who knows where I can get some more information on what this all means? Not sure, but I suspect the key to figuring out what went wrong is probably in the "Panicked task 0x8009dc00: 71315 pages, 0 threads: unknown task" line. Unfortunately, it seems the software can't identify precisely what that task was...

Thought this might pique the interest of some of the folks out there. Maybe someone can identify another forum out there on the Interweb where I might be able find people interested in this sort of thing? Also, anyone have any ideas of how I might be able to pull some error logs out of my new brick?

Realized I failed to type out the entire error screen. I suppose there may have been more that scrolled off the top, but this is what was present when I took the photo (attached below):

panic (cpu 0 caller 0x94c20579): kernel abort type 4: fault_type-0x1, fault addr 0x0

r0: 0x96a46e40 r1: 0x 986b8896 r2: 0x00000001 r3: 0x00000001

r4: 0x96a46e40 r5: 0x96a12268 r6: 0x00000000 r7: 0x891c3e68

r8: 0x00000000 r9: 0x96a04c74 r10: 0x00000000 r11 0x94c6b1e5

r12: 0x00000000 sp: 0x891c3e88 lr 0x00000000 pc: 0x94eac944

cpsr: 0x600000833 fsr: 0x00000005 far: 0x00000000

Debugger message: panic

OS version: Not set yet

Kernel version: Darwin Kernel Version 14.0.0: Fri mar 20 21:15:11 PDT 2014; root: xnu-2423.10.70-1

Kernel slide: 0x0000000814c00000

Kernel text base: 0x94c81000

Boot: 0x00000000 0x00000000

Sleep: 0x00000000 0x00000000

Wake: 0x00000000 0x00000000

Calendar: 0x00000cf2 0x0005386d

Panicked task 0x8009dc00: 71315 pages, 8 threads: unknown task

panicked thread: 0x94f4a940, backtrace: 0x891c3b40

0x94d17711

0x94d182b7

0x94cb6e33

0x94c20579

0x94c1c7c8

0x94c79fa1

0x94ec8967

0x94c79e5f

0x94ee55a9

0x94cfd59c

Task 0x8009dc00: 71315 pages, 8 threads: unknown task

Debugger message: panic

OS version: Not set yet

Kernel version: Darwin Kernel Version 14.0.0: Fri Mar 28 21:15 11 PDT 2014; root: xnu-2423.10.70-1/R

iBoot version: iBoot-1940.10.58

secure boot?: YES

Paniclog version: 2

Kernel slide: 0x0000000014c00000

Kernel text base: 0x94c01000

Epoch Time: sec usec

Boot: 0x00000000 0x00000000

Sleep: 0x00000000 0x00000000

Wake: 0x00000000 0x00000000

Calendar: 0x00000cf2 0x00002e39

Panicked task 0x8009dc00: 71315 pages, 0 threads: unknown task

panicked thread: 0x94f4a940, backtrace 0x891c3b74

panic: we are hanging here... 000 far: 0x00000000 pc: 0x0000000000000000

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