*** Panic Report ***
panic(cpu 0 caller 0xffffff801b720bae): "a freed zone element has been modified in zone ipc ports: expected 0xffffff8031e9f5a0 but found 0xffffff8031e9f580, bits changed 0x20, at offset 0 of 160 in element 0xffffff802f46b900, cookies 0x3f0011f8906d50c2 0x5352102bf3b1c29"@/Library/Caches/com.apple.xbs/Sources/xnu/xnu-3248.50.21/osf mk/kern/zalloc.c:503
Backtrace (CPU 0), Frame : Return Address
0xffffff9127333b50 : 0xffffff801b6dab12
0xffffff9127333bd0 : 0xffffff801b720bae
0xffffff9127333c40 : 0xffffff801b720656
0xffffff9127333c80 : 0xffffff801b71f2e2
0xffffff9127333db0 : 0xffffff801b6c784e
0xffffff9127333e20 : 0xffffff801b6c8ce3
0xffffff9127333e70 : 0xffffff801b6d463b
0xffffff9127333ec0 : 0xffffff801b6d1c84
0xffffff9127333f10 : 0xffffff801b7b8dca
0xffffff9127333fb0 : 0xffffff801b7ecc86

BSD process name corresponding to current thread: watchdogd

Mac OS ver



System Profile:
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x111), Broadcom BCM43xx 1.0 (7.21.95.175.1a6)
Bluetooth: Version 4.4.5f3 17904, 3 services, 27 devices, 1 incoming serial ports
Thunderbolt Bus: iMac, Apple Inc., 23.10
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3430554738454655352D474E4C2D46
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220
USB Device: USB 3.0 Bus
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
Serial ATA Device: APPLE HDD HTS541010A9E662, 1 TB
Model: iMac14,1, BootROM IM141.0118.B13, 4 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 2.14f24
Network Service: Wi-Fi, AirPort, en1
Graphics: Intel Iris Pro, Intel Iris Pro, Built-In
Model: iMac14,1, BootROM IM141.0118.B13, 4 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 2.14f24
Graphics: Intel Iris Pro, Intel Iris Pro, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3430554738454655352D474E4C2D46
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x111), Broadcom BCM43xx 1.0 (7.21.95.175.1a6)
Bluetooth: Version 4.4.5f3 17904, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD HTS541010A9E662, 1 TB
USB Device: USB 3.0 Bus
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
Thunderbolt Bus: iMac, Apple Inc., 23.10