My OSX crashed twice whilst doing a backup

[XPcentric]

Earlier today I made a successful backup on a new external hard drive.

Now I tried to back up another part of my system to an encrypted older hard drive connected using a USB to SATA cable. It crashed twice. Any hints ?

The generated report reads:

Anonymous UUID: DDD89D7F-491B-1135-0357-BC03FA48D2A7

Sun Jul 3 17:12:47 2016

*** Panic Report ***
panic(cpu 0 caller 0xffffff80069c60ac): "wire_count == 0, m = 0xffffff800aa87d40, obj = 0xffffff801a197f00\n"@/SourceCache/xnu/xnu-2782.50.3/osfmk/vm/vm_pageout.c:6467
Backtrace (CPU 0), Frame : Return Address
0xffffff80996bb970 : 0xffffff800692ae01
0xffffff80996bb9f0 : 0xffffff80069c60ac
0xffffff80996bbda0 : 0xffffff8006ee774a
0xffffff80996bbe00 : 0xffffff7f88164dff
0xffffff80996bbe20 : 0xffffff7f88164e74
0xffffff80996bbe40 : 0xffffff8006ed6a4e
0xffffff80996bbea0 : 0xffffff8006eda143
0xffffff80996bbf00 : 0xffffff800695d859
0xffffff80996bbfb0 : 0xffffff8006a11867
Kernel Extensions in backtrace:
com.apple.driver.DiskImages(398.0)[56385062-5400-34EA-9D84-6C920542420F]@0xffffff7f88163000->0xffffff7f8817bfff
dependency: com.apple.iokit.IOStorageFamily(2.0)[D0ABB996-2084-3A05-A166-5951D925EF80]@0xffffff7f87047000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
14F1808

Kernel version:
Darwin Kernel Version 14.5.0: Thu Apr 21 20:40:54 PDT 2016; root:xnu-2782.50.3~1/RELEASE_X86_64
Kernel UUID: 35628954-D060-3983-AA09-0375AE4FFB42
Kernel slide: 0x0000000006600000
Kernel text base: 0xffffff8006800000
__HIB text base: 0xffffff8006700000
System model name: MacBook5,1 (Mac-F42D89C8)

System uptime in nanoseconds: 644274688496
last loaded kext at 623400259108: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f89133000, size 20480)
last unloaded kext at 315083318816: com.apple.iokit.IOAHCIPassThrough 1.0.3 (addr 0xffffff7f8834c000, size 36864)
loaded kexts:
.................

 

[JohnDS]

Check both the target and source disks using First Aid or Verify Disk in Disk Utility (depending on which version of Disk Utility you have.)