Kernel Panic using Air Play? Log attached

Question

I was listening to music on iTunes this evening, streaming to my an Airport Express via AirPlay, to play on my stereo.After about an hour, the sound became distorted, and all of a sudden the computer restarted.Upon restart there was a message saying I had experienced a kernel panic.The log is attached below.All I can decipher is "Word" (yes, Miscoroft Word was running at the time).Is this something I can fix? Is it possibly a more systemic problem?Thanks for any help or advice.Here&#x27;s the log:Wed Jan 23 19:51:27 2013Panic(CPU 0): NMIPI for spinlock acquisition timeout, spinlock: 0xffffff801bf60b20, spinlock owner: 0xffffff8019c55000, current_thread: 0xffffff8019c55000, spinlock_owner_cpu: 0x0RAX: 0x00000000000000fe, RBX: 0xffffff8019a83800, RCX: 0x3c2389fa00000000, RDX: 0xffffff80f83cb000RSP: 0xffffff80e8e88ec0, RBP: 0xffffff80e8e88f40, RSI: 0xffffff80e8e88ef8, RDI: 0xffffff8019a83800R8:  0x0000000000000001, R9:  0x00000000000003ff, R10: 0xffffffffffffffff, R11: 0x00000000ffffffffR12: 0xffffff80e8e88ef8, R13: 0xffffff801978ac40, R14: 0xffffff80193ea000, R15: 0xffffff80e8e88f08RFL: 0x0000000000000087, RIP: 0xffffff7f87495046, CS:  0x0000000000000008, SS:  0x0000000000000010Backtrace (CPU 0), Frame : Return Address0xffffff80e8e88d40 : 0xffffff8005ebd371 0xffffff80e8e88d70 : 0xffffff8005eb7203 0xffffff80e8e88dc0 : 0xffffff8005ece81b 0xffffff80e8e88f40 : 0xffffff7f86451825 0xffffff80e8e88f50 : 0xffffff7f87ad362d 0xffffff80e8e88f60 : 0xffffff7f87adab5b 0xffffff80e8e88f80 : 0xffffff8005eb720f 0xffffff80e8e88fd0 : 0xffffff8005ece6a8 0xffffff80f80c3f00 : 0xffffff8005e27c2c 0xffffff80f80c3f60 : 0xffffff8005e3dcde 0xffffff80f80c3fb0 : 0xffffff8005eb26b7       Kernel Extensions in backtrace:         com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f86450000-&gt;0xffffff7f86474fff         com.apple.driver.AppleACPIPlatform(1.6)[4F08531B-7E5A-3604-924A-8769CF53458B]@0 xffffff7f87acd000-&gt;0xffffff7f87b23fff            dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7f868dc000            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f86450000      Kernel Extensions in backtrace:         com.apple.kext.AMD6000Controller(8.0)[B8119AB9-CAB3-374E-917D-294D7365F60A]@0xf fffff7f87493000-&gt;0xffffff7f874d8fff            dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7f868dc000            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f86450000            dependency: com.apple.kext.AMDSupport(8.0.0)[7B2EC6D1-101A-3928-919E-337D6724752A]@0xffffff 7f8728e000            dependency: com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0 xffffff7f8696d000BSD process name corresponding to current thread: kernel_taskMac OS version:12C60Kernel version:Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333Kernel slide:     0x0000000005c00000Kernel text base: 0xffffff8005e00000System model name: iMac12,2 (Mac-942B59F58194171B)System uptime in nanoseconds: 4878291272795last loaded kext at 3662890564202: com.apple.filesystems.afpfs          10.0 (addr 0xffffff7f880a2000, size 348160)last unloaded kext at 190082074554: com.apple.driver.AppleUSBUHCI          5.2.5 (addr 0xffffff7f86717000, size 65536)loaded kexts:com.apple.filesystems.afpfs          10.0com.apple.nke.asp_tcp          7.0.0com.apple.driver.AppleBluetoothMultitouch          75.15com.apple.driver.AppleHWSensor          1.9.5d0com.apple.driver.AudioAUUC          1.60com.apple.filesystems.autofs          3.0com.apple.driver.AGPM          100.12.69com.apple.iokit.IOBluetoothSerialManager          4.0.9f33com.apple.driver.AppleMikeyHIDDriver          122com.apple.driver.AppleHDA          2.3.1f2com.apple.iokit.IOUserEthernet          1.0.0d1com.apple.driver.AppleUpstreamUserClient          3.5.10com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport          4.0.9f33com.apple.driver.AppleMikeyDriver          2.3.1f2com.apple.driver.AppleBacklight          170.2.3com.apple.kext.AMDFramebuffer          8.0.0com.apple.driver.AppleSMCPDRC          1.0.0com.apple.driver.AppleLPC          1.6.0com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0com.apple.driver.AppleMCCSControl          1.0.33com.apple.driver.AppleIntelHD3000Graphics          8.0.0com.apple.Dont_Steal_Mac_OS_X          7.0.0com.apple.driver.ApplePolicyControl          3.2.11com.apple.AMDRadeonAccelerator          1.0.0com.apple.driver.AppleSMCLMU          2.0.2d0com.apple.driver.AppleIntelSNBGraphicsFB          8.0.0com.apple.driver.AppleIRController          320.15com.apple.iokit.SCSITaskUserClient          3.5.1com.apple.driver.AppleUSBCardReader          3.1.0com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1com.apple.BootCache          34com.apple.driver.XsanFilter          404com.apple.iokit.IOAHCIBlockStorage          2.2.2com.apple.driver.AppleUSBHub          5.2.5com.apple.driver.AirPort.Atheros40          600.70.23com.apple.iokit.AppleBCM5701Ethernet          3.2.5b3com.apple.driver.AppleFWOHCI          4.9.6com.apple.driver.AppleAHCIPort          2.4.1com.apple.driver.AppleUSBEHCI          5.4.0com.apple.driver.AppleEFINVRAM          1.6.1com.apple.driver.AppleRTC          1.5com.apple.driver.AppleACPIButtons          1.6com.apple.driver.AppleHPET          1.7com.apple.driver.AppleSMBIOS          1.9com.apple.driver.AppleACPIEC          1.6com.apple.driver.AppleAPIC          1.6com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0com.apple.nke.applicationfirewall          4.0.39com.apple.security.quarantine          2com.apple.driver.AppleIntelCPUPowerManagement          196.0.0com.apple.security.SecureRemotePassword          1.0com.apple.driver.IOBluetoothHIDDriver          4.0.9f33com.apple.driver.AppleMultitouchDriver          235.28com.apple.kext.triggers          1.0com.apple.iokit.IOSerialFamily          10.0.6com.apple.driver.DspFuncLib          2.3.1f2com.apple.iokit.IOAudioFamily          1.8.9fc10com.apple.kext.OSvKernDSPLib          1.6com.apple.iokit.IOSurface          86.0.3com.apple.iokit.AppleBluetoothHCIControllerUSBTransport          4.0.9f33com.apple.driver.AppleBacklightExpert          1.0.4com.apple.driver.IOPlatformPluginLegacy          1.0.0com.apple.driver.IOPlatformPluginFamily          5.2.0d16com.apple.driver.AppleSMBusController          1.0.10d0com.apple.driver.AppleSMBusPCI          1.0.10d0com.apple.driver.AppleThunderboltEDMSink          1.1.8com.apple.driver.AppleThunderboltEDMSource          1.1.8com.apple.iokit.IOFireWireIP          2.2.5com.apple.driver.AppleHDAController          2.3.1f2com.apple.iokit.IOHDAFamily          2.3.1f2com.apple.iokit.IOBluetoothFamily          4.0.9f33com.apple.driver.AppleGraphicsControl          3.2.11com.apple.iokit.IOAcceleratorFamily          19.0.26com.apple.kext.AMD6000Controller          8.0.0com.apple.kext.AMDSupport          8.0.0com.apple.iokit.IONDRVSupport          2.3.5com.apple.iokit.IOGraphicsFamily          2.3.5com.apple.driver.AppleSMC          3.1.4d2com.apple.driver.AppleUSBHIDKeyboard          165.5com.apple.driver.AppleHIDKeyboard          165.5com.apple.driver.AppleThunderboltDPOutAdapter          1.8.5com.apple.driver.AppleThunderboltDPInAdapter          1.8.5com.apple.driver.AppleThunderboltDPAdapterFamily          1.8.5com.apple.driver.AppleThunderboltPCIDownAdapter          1.2.5com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.5.1com.apple.iokit.IOBDStorageFamily          1.7com.apple.iokit.IODVDStorageFamily          1.7.1com.apple.iokit.IOCDStorageFamily          1.7.1com.apple.iokit.IOUSBHIDDriver          5.2.5com.apple.iokit.IOAHCISerialATAPI          2.5.0com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.1com.apple.iokit.IOUSBMassStorageClass          3.5.0com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.1com.apple.driver.AppleUSBMergeNub          5.2.5com.apple.driver.AppleUSBComposite          5.2.5com.apple.iokit.IOUSBUserClient          5.2.5com.apple.driver.AppleThunderboltNHI          1.6.0com.apple.iokit.IOThunderboltFamily          2.1.1com.apple.iokit.IO80211Family          500.15com.apple.iokit.IOEthernetAVBController          1.0.2b1com.apple.iokit.IONetworkingFamily          3.0com.apple.iokit.IOFireWireFamily          4.5.5com.apple.iokit.IOAHCIFamily          2.2.1com.apple.iokit.IOUSBFamily          5.4.0com.apple.driver.AppleEFIRuntime          1.6.1com.apple.iokit.IOHIDFamily          1.8.0com.apple.iokit.IOSMBusFamily          1.1com.apple.security.sandbox          220com.apple.kext.AppleMatch          1.0.0d1com.apple.security.TMSafetyNet          7com.apple.driver.DiskImages          344com.apple.iokit.IOStorageFamily          1.8com.apple.driver.AppleKeyStore          28.21com.apple.driver.AppleACPIPlatform          1.6com.apple.iokit.IOPCIFamily          2.7.2com.apple.iokit.IOACPIFamily          1.4com.apple.kec.corecrypto          1.0panic(cpu 5 caller 0xffffff8005e27e07): "Spinlock acquisition timed out: lock&#x3D;0xffffff801bf60b20, lock owner thread&#x3D;0xffffff8019c55000, current_thread: 0xffffff801b32baa0, lock owner active on CPU 0x0, current owner: 0xffffff8019c55000"@/SourceCache/xnu/xnu-2050.18.24/osfmk/i386/locks_i386.c:363Backtrace (CPU 5), Frame : Return Address0xffffff80f80abe60 : 0xffffff8005e1d626 0xffffff80f80abed0 : 0xffffff8005e27e07 0xffffff80f80abf00 : 0xffffff8005ea59be 0xffffff80f80abfb0 : 0xffffff8005eceafe BSD process name corresponding to current thread: Microsoft Word

Linc Davis · Answer

That panic was not caused by third-party software. If it&#x27;s happened only once, and is not repeated in at least a few thousand hours of use, a reasonable choice would be to ignore it. Machines don&#x27;t work perfectly. They never will.If the problem is recurrent, the possibilities are (1) a damaged OS X installation; (2) a fault in a peripheral device, if any; (3) an internal hardware fault; and (4) an obscure bug in OS X.You can rule out the first two possibilities by reinstalling the OS and testing with non-essential peripherals disconnected and aftermarket expansion cards removed, if applicable. Sometimes a clean reinstallation (after erasing the startup volume) may solve a problem that isn&#x27;t solved by reinstalling in place, without erasing.If you&#x27;ve recently upgraded the memory, reinstall the original memory and see whether there&#x27;s any improvement. Be careful not to touch the gold contacts on the memory modules when handling them. If necessary, clean them with a mild solvent such as rubbing alcohol.The Apple Hardware Test, though generally unreliable, will sometimes detect a fault. A negative test can&#x27;t be depended on. Run the extended version of the test.In the category of obscure bugs, reports suggest that FileVault may trigger kernel traps under some unknown conditions. Most, if not all, of these reports seem to involve booting from an aftermarket SSD. If those conditions apply to you, try deactivating FileVault.Otherwise, make a "Genius" appointment at an Apple Store to have the machine tested. You may have to leave it there for several days. There isn&#x27;t much point in doing this unless you can reproduce the panic, or if you can&#x27;t, it happens often enough that it&#x27;s likely to be repeated at the store. Otherwise you may be told that nothing is wrong.Print the first page of the panic report and bring it with you.Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you know how to restore, and you have at least  two independent backups.) Don’t erase the recovery partition, if present.*An SSD doesn&#x27;t need to be zeroed.

Matthew Palm · Answer

Thanks, Linc.The kernel panic occurred again about 2 hours later (both last night).To answer some o your questions:-I did a re-install (clean erase and install) back in November.-I only have an Apple keyboard and an iPhone cable attached to the iMac (plus a BT Trackpad).-I haven&#x27;t upgdared memory.-I ran the Hardware Test, which found nothing wrong.-I don&#x27;t use File Vault.The good news is that I am covered by Apple Care, and I opened a case with them. We&#x27;ll see what they say.Thanks for your help!