iMac boots and report: "panic(cpu 1 caller...)"

Question

iMac boots and report: "panic(cpu 1 caller...)"

My Mid 2011 iMac 27" has begun to boot by itself infrequently and subsequently reports an error message, see below.

I ran the Apple Utility and Apple hardware tests, but both report nothing damaged.

Please advice...

copy of error report:

*** Panic Report ***

panic(cpu 1 caller 0xffffff8002536d0f): "hfs_swap_HFSPlusBTInternalNode: extents key #0 invalid length (3)\n"@/SourceCache/xnu/xnu-2782.10.72/bsd/hfs/hfs_endian.c:458

Backtrace (CPU 1), Frame : Return Address

0xffffff810d64ba60 : 0xffffff800212fe41

0xffffff810d64bae0 : 0xffffff8002536d0f

0xffffff810d64bb10 : 0xffffff8002535ba3

0xffffff810d64bb60 : 0xffffff8002526327

0xffffff810d64bb90 : 0xffffff800237b5e5

0xffffff810d64bca0 : 0xffffff800237aa5a

0xffffff810d64bd50 : 0xffffff8002378ff4

0xffffff810d64bda0 : 0xffffff800255e7b1

0xffffff810d64bdd0 : 0xffffff80025557af

0xffffff810d64beb0 : 0xffffff8002359c2b

0xffffff810d64bed0 : 0xffffff80023442b4

0xffffff810d64bf40 : 0xffffff800234e4b7

0xffffff810d64bf50 : 0xffffff800264b386

0xffffff810d64bfb0 : 0xffffff8002236e86

BSD process name corresponding to current thread: launchd

Mac OS version:

14C109

iMac (27-inch Mid 2011), iOS 8.1.3

Posted on Feb 6, 2015 4:38 AM

Reply

Answer 1

SeaPapp

Level 7

26,492 points

Feb 6, 2015 5:07 AM in response to janfromringsted

Part of a panic report doesn't help. Please post the entire report including the hardware profile at the end.

Reply

Answer 2

Linc Davis

Level 10

209,709 points

Feb 6, 2015 8:27 PM in response to janfromringsted

Disconnect all external storage devices. If you back up over the network with Time Machine, turn Time Machine off in its preference pane temporarily. See whether the panics stop. If they do, one of the devices you disconnected is malfunctioning, or the Time Machine backup store is corrupt.

Reply

Answer 3

Feb 6, 2015 11:30 PM in response to Linc Davis

Ok - of external devices I only have the "Time Machine" via wifi. This I've turned off now.

Previously, I attempted to cure the "panic" error by installing a backup from the Time Machine. This didn't solve the issue.

Now, I'll wait

Reply

Answer 4

Feb 9, 2015 1:14 AM in response to Linc Davis

You solved the problem Linc. Excellent.

I turned off the Time Machine, and then I erased the harddisk on the Time Capsule.

Now the iMac works fine (no breakdowns yesterday) and the Time Machine is now working to create a new full back up onto the Time Capsule.

Thank you very much.

Reply

Quick Links

iMac boots and report: "panic(cpu 1 caller...)"