IPhone 6 Plus 16GB blue screen crashes: Read, error type:Address map hole or size mis-match

Question

Hi folks,
Some time ago I had a 16GB 6+ and it crashed with the blue screen, so I returned it. I now have a brand new one that I got from Tmobile ($75 return fee) and although it has mostly worked just fine, I have gotten 2 blue screen crashes. Below are the details from the phone's log.
What strikes me is the message "Read, error type:Address map hole or size mis-match".
Does anyone know if this could be caused by a hardware defect?
I've gotten one of these crashes running iOS 8.1.2 and another in 8.1.3.
Thanks.
Incident Identifier: 20304759-E90B-453F-BDC5-176AF4E30041
CrashReporter Key:   fcf18d230005749957728546dea3221a0c588330
Hardware Model:      iPhone7,1
Date/Time:           2015-01-25 19:43:44.913 -0800
OS Version:          iOS 8.1.2 (12B440)
panic(cpu 0 caller 0xffffff8008cd45d0): L2C PIO error (src:core0-AF snoop, address:0x1202030208, access:Read, error type:Address map hole or size mis-match, L2C_ERR_STS:100003fc00000202, L2C_ERR_ADR:0x1108e1202030208, L2C_ERR_INF:0x2107)
Debugger message: panic
OS version: 12B440
Kernel version: Darwin Kernel Version 14.0.0: Mon Nov  3 22:27:30 PST 2014; root:xnu-2783.3.22~1/RELEASE_ARM64_T7000
iBoot version: iBoot-2261.3.33
secure boot?: YES
Paniclog version: 3
Kernel slide:     0x0000000006000000
Kernel text base: 0xffffff8008002000
Epoch Time:        sec       usec
  Boot    : 0x54bc22ef 0x00000000
  Sleep   : 0x54c58398 0x0002abb4
  Wake    : 0x54c583ae 0x000f08df
  Calendar: 0x54c5b7e3 0x00025045

Answer 1

same with my iPhone 4s 16gb
{"os_version":"iOS 8.1.3 (12B466)","bug_type":"110"}
Incident Identifier: 582496DB-6999-468C-9504-3D1C191B9F4B
CrashReporter Key: 623a577555e51ed110b937358adfa66fba3ea447
Hardware Model: iPhone4,1
Date/Time: 2015-02-20 04:17:50.830 +0300
OS Version: iOS 8.1.3 (12B466)
panic(cpu 0 caller 0x83dc8347): "i2c1::_checkBusStatus Bus is still in a bad state; last write status 00010110 xfer 00000000 fifo 00000000 for device als"
Debugger message: panic
OS version: 12B466
Kernel version: Darwin Kernel Version 14.0.0: Mon Jan 12 21:30:11 PST 2015; root:xnu-2783.3.26~3/RELEASE_ARM_S5L8940X
Kernel slide: 0x0000000003400000
Kernel text base: 0x83401000
Boot : 0x54e68884 0x00000000
Sleep : 0x54e68a7e 0x000dd6ac
Wake : 0x54e68b19 0x00035c02
Calendar: 0x54e68b1d 0x00040927
Panicked task 0x84a87c60: 13773 pages, 122 threads: pid 0: kernel_task
panicked thread: 0xc5066e80, backtrace: 0x81a33ca0
0x834ad94d
0x834adcb1
0x8341d5bd
0x83dc8347
0x83dc8059
0x83dc7e35
0x8389c601
0x8389c513
0x836f6f65
0x8389cc6d
0x8389ccc5
0x83a9f18d
0x83a9c27f
0x83a9c73f
0x83a9c90d
0x836f6f65
0x83a9c8e5
0x836e91e7
0x8343ed9b
0x834ab59c
Task 0x84a87c60: 13773 pages, 122 threads: pid 0: kernel_task
Task 0x84a87948: 771 pages, 3 threads: pid 1: launchd
Task 0x84a87000: 2016 pages, 13 threads: pid 17: UserEventAgent
Task 0x84a87630: 481 pages, 4 threads: pid 18: misd
Task 0x84a87318: 4114 pages, 22 threads: pid 19: CommCenter
Task 0x87a62948: 349 pages, 2 threads: pid 21: keybagd
Task 0x87a62318: 574 pages, 4 threads: pid 23: iaptransportd
Task 0x87a62000: 868 pages, 9 threads: pid 24: configd
Task 0x87a7ac60: 793 pages, 4 threads: pid 25: lockdownd
Task 0x87a7a948: 1218 pages, 6 threads: pid 26: imagent
Task 0x87a7a630: 2771 pages, 4 threads: pid 27: atc
Task 0x87a7a318: 792 pages, 2 threads: pid 28: fairplayd.H1
Task 0x87a7a000: 1571 pages, 14 threads: pid 29: aggregated
Task 0x87c4ac60: 1069 pages, 4 threads: pid 30: routined
Task 0x87c4a318: 707 pages, 5 threads: pid 33: timed
Task 0x87d23c60: 646 pages, 2 threads: pid 35: installd
Task 0x87d23948: 2383 pages, 11 threads: pid 36: mediaserverd
Task 0x87d23318: 1279 pages, 11 threads: pid 38: ubd
Task 0x87d23000: 249 pages, 7 threads: pid 39: syslogd
Task 0x87d6ac60: 410 pages, 2 threads: pid 40: softwareupdated
Task 0x87d6a948: 851 pages, 5 threads: pid 41: mediaremoted
Task 0x87d6a630: 1877 pages, 7 threads: pid 42: identityservices
Task 0x87d6a318: 9938 pages, 16 threads: pid 43: SpringBoard
Task 0x87d6a000: 453 pages, 2 threads: pid 44: fileproviderd
Task 0x87e25c60: 609 pages, 4 threads: p