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Re: Understanding Panic Report...
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Re: Understanding Panic Report...

  • Subject: Re: Understanding Panic Report...
  • From: simran charley <email@hidden>
  • Date: Fri, 31 Aug 2012 18:10:57 +0530
Thanks both of you for your great guidance...

I have checked Technical note TN2063 and follow the steps mentioned in the section "Deciphering a Panic Log from an Intel-based Mac".
I am able to identify the problem and more important to understand this technique :)


Thanks ,
Simran.


On Thu, Aug 30, 2012 at 8:59 PM, Brian Bechtel <email@hidden> wrote:
At offset 0x25b6 of com.xyz.driver.testlistner you have called strlcpy
with a null argument.

The instruction in question being executed in strlcpy is found in the
EIP register.

0x28b308 <strlcpy+25>:  movzbl (íx),êx

EDX is zero, so trying to dereference it panics.


On Wed, Aug 29, 2012 at 10:40 PM, simran charley
<email@hidden> wrote:
> Hi,
>
> I got following panic when I have Shut down / Restart my machine.
>
> I am trying sample application for testing Vnode and File listener in test
> application kext testlistner.
>
>  I have also go through the apple doc "Understanding and Debugging kernel
> panics" but not getting problem.
> Following is the panic report and it is not consistent, it will generate
> tentatively once a week...
>
>
> Fri Jul 13 14:47:23 2012
>
> panic(cpu 1 caller 0x2a8ad9): Kernel trap at 0x0028b308, type 14=page fault,
> registers:
>
> CR0: 0x8001003b, CR2: 0x00000000, CR3: 0x00100000, CR4: 0x00000660
>
> EAX: 0x00000400, EBX: 0x3195372c, ECX: 0x000003ff, EDX: 0x00000000
>
> CR2: 0x00000000, EBP: 0x319536d8, ESI: 0x00000000, EDI: 0x3195372c
>
> EFL: 0x00010216, EIP: 0x0028b308, CS:  0x00000008, DS:  0x05d10010
>
> Error code: 0x00000000
>
> Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
>
> 0x319534f8 : 0x21b455 (0x5d09dc 0x3195352c 0x2238b1 0x0)
>
> 0x31953548 : 0x2a8ad9 (0x5927fc 0x28b308 0xe 0x5929c6)
>
> 0x31953628 : 0x29e9a8 (0x31953640 0xb 0x319536d8 0x28b308)
>
> 0x31953638 : 0x28b308 (0xe 0x239a0048 0x31950070 0x4a0010)
>
> 0x319536d8 : 0x188b5b6 (0x3195372c 0x0 0x400 0x2dd82a)
>
> 0x31953b48 : 0x464988 (0x5440b2c 0x0 0x3 0x0)
>
> 0x31953b88 : 0x464dea (0x543ca04 0x5440b2c 0x3 0x0)
>
> 0x31953bc8 : 0x2ea0d1 (0x5440b2c 0x3 0x0 0x0)
>
> 0x31953f78 : 0x4eeb08 (0x59d6000 0x5a7c3c8 0x5a6e134 0x7fff)
>
> 0x31953fc8 : 0x29f43d (0x5a7c3c4 0x0 0x29e6db 0x5a7c3c4)
>
>       Kernel Extensions in backtrace (with dependencies):
>
>          com.xyz.driver.testlistner(1)@0x1889000->0x189cfff
>
> BSD process name corresponding to current thread: securityd
>
> Mac OS version:
>
> 10F2108
>
> Kernel version:
>
> Darwin Kernel Version 10.4.1: Fri Jul 16 23:04:20 PDT 2010;
> root:xnu-1504.7.51~1/RELEASE_I386
>
> System model name: Macmini4,1 (Mac-F2208EC8)
>
> System uptime in nanoseconds: 7238241802
>
> unloaded kexts:
>
> (none)
>
> loaded kexts:
>
> com.xyz.driver.testlistner 1
>
> com.apple.Dont_Steal_Mac_OS_X 7.0.0
>
> com.apple.iokit.CHUDUtils 364
>
> com.apple.iokit.CHUDProf 364
>
> com.apple.driver.AudioIPCDriver 1.1.5
>
> com.apple.driver.AppleIntelYonahProfile 14
>
> com.apple.driver.AppleIntelPenrynProfile 17.1
>
> com.apple.driver.AppleIntelNehalemProfile 11.1
>
> com.apple.driver.AppleIntelMeromProfile 19.1
>
> com.apple.driver.ACPI_SMC_PlatformPlugin 4.3.0d3
>
> com.apple.GeForce 6.1.8
>
> com.apple.driver.AppleIRController 303.8
>
> com.apple.iokit.SCSITaskUserClient 2.6.5
>
> com.apple.BootCache 31
>
> com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
>
> com.apple.driver.AppleSDXC 1
>
> com.apple.iokit.AppleBCM5701Ethernet 2.3.9b3
>
> com.apple.driver.AirPortBrcm43224 425.16.2
>
> com.apple.iokit.IOAHCIBlockStorage 1.6.2
>
> com.apple.driver.AppleUSBHub 4.0.0
>
> com.apple.driver.AppleHPET 1.5
>
> com.apple.driver.AppleFWOHCI 4.7.1
>
> com.apple.driver.AppleAHCIPort 2.1.2
>
> com.apple.driver.AppleUSBEHCI 4.0.2
>
> com.apple.driver.AppleUSBOHCI 3.9.6
>
> com.apple.driver.AppleEFINVRAM 1.3.0
>
> com.apple.driver.AppleRTC 1.3.1
>
> com.apple.driver.AppleACPIButtons 1.3.3
>
> com.apple.driver.AppleSMBIOS 1.6
>
> com.apple.driver.AppleACPIEC 1.3.3
>
> com.apple.driver.AppleAPIC 1.4
>
> com.apple.driver.AppleIntelCPUPowerManagementClient 105.11.0
>
> com.apple.security.sandbox 0
>
> com.apple.security.quarantine 0
>
> com.apple.nke.applicationfirewall 2.1.11
>
> com.apple.driver.AppleIntelCPUPowerManagement 105.11.0
>
> com.apple.iokit.IOFireWireIP 2.0.3 - last loaded 7211737843
>
> com.apple.iokit.IOSurface 74.0
>
> com.apple.iokit.IOBluetoothSerialManager 2.3.7f1
>
> com.apple.iokit.IOSerialFamily 10.0.3
>
> com.apple.iokit.CHUDKernLib 364
>
> com.apple.iokit.IOAudioFamily 1.7.6fc2
>
> com.apple.kext.OSvKernDSPLib 1.3
>
> com.apple.driver.AppleHDAController 1.9.3f5
>
> com.apple.iokit.IOHDAFamily 1.9.3f5
>
> com.apple.driver.AppleSMBusController 1.0.8d0
>
> com.apple.iokit.AppleProfileFamily 41.4
>
> com.apple.driver.AppleSMC 3.0.1d2
>
> com.apple.driver.IOPlatformPluginFamily 4.3.0d3
>
> com.apple.driver.AppleSMBusPCI 1.0.8d0
>
> com.apple.nvidia.nv50hal 6.1.8
>
> com.apple.NVDAResman 6.1.8
>
> com.apple.iokit.IONDRVSupport 2.2
>
> com.apple.iokit.IOGraphicsFamily 2.2
>
> com.apple.driver.BroadcomUSBBluetoothHCIController 2.3.7f1
>
> com.apple.driver.AppleUSBBluetoothHCIController 2.3.7f1
>
> com.apple.iokit.IOBluetoothFamily 2.3.7f1
>
> com.apple.iokit.IOUSBHIDDriver 4.0.2
>
> com.apple.driver.AppleUSBComposite 3.9.0
>
> com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
>
> com.apple.iokit.IOBDStorageFamily 1.6
>
> com.apple.iokit.IODVDStorageFamily 1.6
>
> com.apple.iokit.IOCDStorageFamily 1.6
>
> com.apple.driver.XsanFilter 402.1
>
> com.apple.driver.AppleFileSystemDriver 2.0
>
> com.apple.iokit.IO80211Family 311.1
>
> com.apple.iokit.IONetworkingFamily 1.9
>
> com.apple.iokit.IOAHCISerialATAPI 1.2.4
>
> com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
>
> com.apple.iokit.IOUSBUserClient 4.0.0
>
> com.apple.iokit.IOFireWireFamily 4.2.6
>
> com.apple.iokit.IOAHCIFamily 2.0.4
>
> com.apple.iokit.IOUSBFamily 4.1.0
>
> com.apple.driver.NVSMU 2.2.7
>
> com.apple.driver.AppleEFIRuntime 1.3.0
>
> com.apple.iokit.IOHIDFamily 1.6.5
>
> com.apple.iokit.IOSMBusFamily 1.1
>
> com.apple.kext.AppleMatch 1.0.0d1
>
> com.apple.security.TMSafetyNet 6
>
> com.apple.driver.DiskImages 286
>
> com.apple.iokit.IOStorageFamily 1.6.2
>
> com.apple.driver.AppleACPIPlatform 1.3.3
>
> com.apple.iokit.IOPCIFamily 2.6
>
> com.apple.iokit.IOACPIFamily 1.3.0
>
>
>
>
> Thanks ,
>
> Simran...
>
>
>
>
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References: 
 >Understanding Panic Report... (From: simran charley <email@hidden>)

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