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Re: Null return address in backtrace
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Re: Null return address in backtrace

  • Subject: Re: Null return address in backtrace
  • From: Andrew Keller <email@hidden>
  • Date: Fri, 08 Apr 2016 14:56:41 -0400
Hi Brian,

Here’s most of the full log (hopefully this will be small enough to get past the lists’ maximum size limit):

Anonymous UUID:       9AA4E26A-1A51-AE6D-329D-D8D0750737F9

Tue Apr  5 16:46:15 2016

*** Panic Report ***
panic(cpu 0 caller 0xffffff8000e16df2): Kernel trap at 0x0000000000000000, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x00000001d27d8073, CR4: 0x00000000001627e0
RAX: 0xffffff8032f54c00, RBX: 0xffffff80149f7000, RCX: 0x0000000000000001, RDX: 0x7fffffffffffffff
RSP: 0xffffff810cd6bb78, RBP: 0xffffff810cd6bbc0, RSI: 0x0000000000000002, RDI: 0xffffff8033015c00
R8:  0x00000000000002a5, R9:  0x0000000000000000, R10: 0x0000000000000000, R11: 0xffffff8013b0b2d0
R12: 0xffffff8001512f48, R13: 0xffffff8001429750, R14: 0xffffff8033015c00, R15: 0xffffff8031491580
RFL: 0x0000000000010282, RIP: 0x0000000000000000, CS:  0x0000000000000008, SS:  0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000010, Fault CPU: 0x0

Backtrace (CPU 0), Frame : Return Address
0xffffff810cd6b820 : 0xffffff8000d2ad21 
0xffffff810cd6b8a0 : 0xffffff8000e16df2 
0xffffff810cd6ba60 : 0xffffff8000e33ca3 
0xffffff810cd6ba80 : 0x0 
0xffffff810cd6bbc0 : 0xffffff7f82d90a68 
0xffffff810cd6bc00 : 0xffffff7f82d9fb95 
0xffffff810cd6bc30 : 0xffffff7f82d91479 
0xffffff810cd6bc50 : 0xffffff7f82df66a8 
0xffffff810cd6bc70 : 0xffffff7f82d912dc 
0xffffff810cd6bca0 : 0xffffff7f82d9f6a1 
0xffffff810cd6bd00 : 0xffffff80012b65d1 
0xffffff810cd6bd50 : 0xffffff80012fde02 
0xffffff810cd6bdc0 : 0xffffff8000de17de 
0xffffff810cd6be10 : 0xffffff8000d2ef8c 
0xffffff810cd6be40 : 0xffffff8000d139f3 
0xffffff810cd6be90 : 0xffffff8000d2429d 
0xffffff810cd6bf10 : 0xffffff8000e0231a 
0xffffff810cd6bfb0 : 0xffffff8000e344c6 
      Kernel Extensions in backtrace:
         com.apple.iokit.IOAcceleratorFamily2(156.16)[1259B80F-E4C5-3BC9-BED5-65B42289E8C0]@0xffffff7f82d75000->0xffffff7f82de3fff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[70B4F2BF-8785-326D-8B1D-D62BD4B2068A]@0xffffff7f81524000
            dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[8922721D-5517-3883-BD3A-57422D0244A0]@0xffffff7f81e62000
         com.apple.driver.AppleIntelHD5000Graphics(10.0.6)[88C45C9D-E631-3130-99D0-EDCC838563FF]@0xffffff7f82df2000->0xffffff7f82e51fff
            dependency: com.apple.iokit.IOSurface(97.4)[A4AE35B7-0C17-38F2-AD0D-A4C4B40196FB]@0xffffff7f81d3a000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[70B4F2BF-8785-326D-8B1D-D62BD4B2068A]@0xffffff7f81524000
            dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[8922721D-5517-3883-BD3A-57422D0244A0]@0xffffff7f81e62000
            dependency: com.apple.iokit.IOAcceleratorFamily2(156.16)[1259B80F-E4C5-3BC9-BED5-65B42289E8C0]@0xffffff7f82d75000

BSD process name corresponding to current thread: com.apple.WebKit

Mac OS version:
14F1713

Kernel version:
Darwin Kernel Version 14.5.0: Mon Jan 11 18:48:35 PST 2016; root:xnu-2782.50.2~1/RELEASE_X86_64
Kernel UUID: A503418E-2182-3864-AEA5-79374A30A241
Kernel slide:     0x0000000000a00000
Kernel text base: 0xffffff8000c00000
__HIB  text base: 0xffffff8000b00000
System model name: MacBookPro11,1 (Mac-189A3D4F975D5FFC)

System uptime in nanoseconds: 258108976800295
last loaded kext at 230673262527964: com.apple.driver.AppleBluetoothMultitouch 85.3 (addr 0xffffff7f8348e000, size 57344)
last unloaded kext at 229728973708769: com.apple.driver.AppleMultitouchDriver 264.6 (addr 0xffffff7f83458000, size 147456)
loaded kexts:
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.iokit.IOUSBAttachedSCSI 1.1.1

[ 4269 bytes removed ]

com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0

System Profile:
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x112), Broadcom BCM43xx 1.0 (7.15.166.24.3)
Bluetooth: Version 4.3.6f3 16238, 3 services, 27 devices, 1 incoming serial ports
Thunderbolt Bus: MacBook Pro, Apple Inc., 17.2
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453120
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453120
USB Device: Internal Memory Card Reader
USB Device: Backup+  Desk
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Keyboard Hub
USB Device: Apple Keyboard
Serial ATA Device: APPLE SSD SM0512F, 500.28 GB
Model: MacBookPro11,1, BootROM MBP111.0138.B16, 2 processors, Intel Core i5, 2.6 GHz, 8 GB, SMC 2.16f68
Network Service: Wi-Fi, AirPort, en0
Graphics: Intel Iris, Intel Iris, Built-In

Thanks,
 - Andrew


Am 06.04.2016 um 8:26 nachm. schrieb Brian Bechtel <email@hidden>:

Post the whole panic log. 

Right now, you haven't given enough information. 

In general a jump to zero from a kext happens when a kext uses a bad object vTable to execute what should be a method, but instead is zero. 

The previous return address, 0xffffff7f82d90a68, is in the address space reserved for kexts. The whole panic log would tell us which kext. 

On Apr 6, 2016, at 2:01 PM, Andrew Keller <email@hidden> wrote:

Hi guys,

I’m attempting to track down a kernel panic on a friend’s computer.  The panic log appears to implicate something regarding graphics, and does not mention any 3rd party software.

One thing did stand out, though — a null return address in the backtrace:

Backtrace (CPU 0), Frame : Return Address
0xffffff810cd6b820 : 0xffffff8000d2ad21 
0xffffff810cd6b8a0 : 0xffffff8000e16df2 
0xffffff810cd6ba60 : 0xffffff8000e33ca3 
0xffffff810cd6ba80 : 0x0 
0xffffff810cd6bbc0 : 0xffffff7f82d90a68 
0xffffff810cd6bc00 : 0xffffff7f82d9fb95 
0xffffff810cd6bc30 : 0xffffff7f82d91479 
0xffffff810cd6bc50 : 0xffffff7f82df66a8 
0xffffff810cd6bc70 : 0xffffff7f82d912dc 
0xffffff810cd6bca0 : 0xffffff7f82d9f6a1 
0xffffff810cd6bd00 : 0xffffff80012b65d1 
0xffffff810cd6bd50 : 0xffffff80012fde02 
0xffffff810cd6bdc0 : 0xffffff8000de17de 
0xffffff810cd6be10 : 0xffffff8000d2ef8c 
0xffffff810cd6be40 : 0xffffff8000d139f3 
0xffffff810cd6be90 : 0xffffff8000d2429d 
0xffffff810cd6bf10 : 0xffffff8000e0231a 
0xffffff810cd6bfb0 : 0xffffff8000e344c6 

What causes a null return address in the backtrace?

This is OS X 14F1713 on a MacBookPro11,1.

Thanks,
 - Andrew Keller


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References: 
 >Null return address in backtrace (From: Andrew Keller <email@hidden>)
 >Re: Null return address in backtrace (From: Brian Bechtel <email@hidden>)

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