Bad Memory? Or something else?

I had got my custo working well, but I kept getting crashes in all sorts of apps.

So I reinstalled the packages file from Mountain Lion USB, as I read in another post that a reinstalling this would fix isssues with safari crashes etc. (for some people) didn't really make a difference. Also added cuda as I thought it was graphics card related (as firefox would crash with a device id reason).

So I went for a full reinstall, and now I get kernal panics and apps crashing randomly and also finder crashing and failing to restart, also sleep has gone weird now (which is odd before it worked flawlessly).

So this is what I have:

GA-H77-DS3H (F6 BIOS update)
i5 3570k
EVGA GeForce GT640 2GB
San Disk Extreme 120GB
8GB Corsair RAM (Corsair CMZ8GX3M2A1600C9B 8GB 1600Mhz CL9 DDR3 Vengeance Memory)
SyBA PEX30009
2TB Baracuda

Setup with:

GraphicsEnabler=No
PCIRootUID=0 (If this is 1 or 0 it makes no difference the system still boots and I get the same issues!)

Multibeast 5 setup:
UserDSDT or DSDT-Free Installation
Drivers -> Audio -> Realtek -> Without DSDT -> ALC887 -> v100302 Current
Drivers -> Miscellaneous -> FakeSMC
Drivers -> Network -> maolj's AtherosL1

I have downloaded memTest for OSX and run it in single user mode, safe mode etc. and I always get this result:

Memtest version 4.22 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only

Mac OS X 10.8 (12A269) running in multiuser mode
Memory Page Size: 4096
System has 4 Intel core(s) with SSE
Requested memory: 2379MB (2495123456 bytes)
Available memory: 2379MB (2495123456 bytes)
Allocated memory: 2379MB (2495123456 bytes) at local address 0x0000000101000000
Attempting memory lock... locked successfully
Partitioning memory into 2 comparison buffers...
Buffer A: 1189MB (1247561728 bytes) starts at local address 0x0000000101000000
Buffer B: 1189MB (1247561728 bytes) starts at local address 0x000000014b5c4800

Running 2 test sequences... (CTRL-C to quit)

Test sequence 1 of 2:

Running tests on full 2379MB region...
Stuck Address : testing 1 of 16

FAILURE! Data mismatch at local address 0x0000000149e8b4c8
Actual Data: 0xfffffffebe174b37

Linear PRN : testing 1 of 16

FAILURE! Data mismatch at local address 0x0000000149e8b0d0
Expected Data: 0xf447375f93bb3e3d, Actual Data: 0xf447375f13bb3e3d

Running comparison tests using 1189MB buffers...
Random Value :

FAILURE! Data mismatch at local BUFA address 0x0000000101039810, BUFB address 0x000000014b5fe010
BUFA Data: 0x2f6d23145ff5d348, BUFB Data: 0x2f6d231457f5d348

Compare XOR :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x545c8e61b0c6cee9, BUFB Data: 0x545c8e6160c6cee9

Compare SUB :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x5a5cd665b0cf49bc, BUFB Data: 0x5a5cd66560cf49bc

Compare MUL :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xea31cb3b95a9ae00, BUFB Data: 0x1aa1075345a9ae00

Compare DIV :

FAILURE! Data mismatch at local BUFA address 0x0000000101039810, BUFB address 0x000000014b5fe010
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000090000000

Compare OR :

FAILURE! Data mismatch at local BUFA address 0x0000000101039808, BUFB address 0x000000014b5fe008
BUFA Data: 0x6fb7456e4eef7c27, BUFB Data: 0x6fb7456e46ef7c27

Compare AND :

FAILURE! Data mismatch at local BUFA address 0x0000000101039808, BUFB address 0x000000014b5fe008
BUFA Data: 0x47b740684eeb5c05, BUFB Data: 0x47b7406846eb5c05

Sequential Increment:

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x5b2fd1c59f7c26ba, BUFB Data: 0x5b2fd1c54f7c26ba

Solid Bits : testing 1 of 64

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xffffffffffffffff, BUFB Data: 0xffffffffefffffff

Block Sequential : testing 1 of 256

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000040000000

Checkerboard : testing 1 of 64

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x5555555555555555, BUFB Data: 0x5555555545555555

Bit Spread : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000005, BUFB Data: 0x0000000040000005

Bit Flip : testing 1 of 512

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xffffffff6ffffffe

Walking Ones : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039808, BUFB address 0x000000014b5fe008
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xfffffffff7fffffe

Walking Zeroes : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039818, BUFB address 0x000000014b5fe018
BUFA Data: 0x0000000000000001, BUFB Data: 0x0000000050000001


Test sequence 2 of 2:

Running tests on full 2379MB region...
Stuck Address : testing 1 of 16

FAILURE! Data mismatch at local address 0x0000000149e8b090
Actual Data: 0x0000000141e8b090

Linear PRN : testing 1 of 16

FAILURE! Data mismatch at local address 0x0000000149e8b0d0
Expected Data: 0xf447375f93bb3e3d, Actual Data: 0xf447375f13bb3e3d

Running comparison tests using 1189MB buffers...
Random Value :

FAILURE! Data mismatch at local BUFA address 0x0000000101039810, BUFB address 0x000000014b5fe010
BUFA Data: 0x2f7f57fb1bf7404f, BUFB Data: 0x2f7f57fb13f7404f

Compare XOR :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x28949dfa30511d2c, BUFB Data: 0x28949dfa60511d2c

Compare SUB :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xa9c25792f091248f, BUFB Data: 0xa9c257932091248f

Compare MUL :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xb2ca5811899521cb, BUFB Data: 0x3799db02699521cb

Compare DIV :

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000001, BUFB Data: 0x0000000000000000

Compare OR :

FAILURE! Data mismatch at local BUFA address 0x0000000101039810, BUFB address 0x000000014b5fe010
BUFA Data: 0x7fefdc266a7ffe3b, BUFB Data: 0x7fefdc26627ffe3b

Compare AND :

FAILURE! Data mismatch at local BUFA address 0x0000000101039820, BUFB address 0x000000014b5fe020
BUFA Data: 0x756fd002627e1a39, BUFB Data: 0x756fd002227e1a39

Sequential Increment:

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xfbbc8fbdb39254a7, BUFB Data: 0xfbbc8fbd639254a7

Solid Bits : testing 1 of 64

FAILURE! Data mismatch at local BUFA address 0x0000000101039808, BUFB address 0x000000014b5fe008
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000080000000

Block Sequential : testing 1 of 256

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000040000000

Checkerboard : testing 1 of 64

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x5555555555555555, BUFB Data: 0x5555555545555555

Bit Spread : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000005, BUFB Data: 0x0000000040000005

Bit Flip : testing 1 of 512

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xffffffff67fffffe

Walking Ones : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039808, BUFB address 0x000000014b5fe008
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xffffffffa7fffffe

Walking Zeroes : testing 1 of 128

FAILURE! Data mismatch at local BUFA address 0x0000000101039800, BUFB address 0x000000014b5fe000
BUFA Data: 0x0000000000000001, BUFB Data: 0x0000000040000001


*** Address Test Failed *** One or more DIMM address lines are non-functional.
Execution time: 43 seconds.

Could this be a BIOS setting issue? I cleared the CMOS and started again and just set it to auto, all I have done is set the SATA to the correct mode and turned off the internal graphics plus set PCI as prefered graphics.

I can't see it as anything else now, as other people don't seem to get the constant crashing with similar setups on the same board I just wanted to check to see if anyone else runs memtest and gets the same results (i.e. I'm not convinced memtest is working correctly, and would like a second opinion!).

In the console log fies for core services has a log like this:

Process: coreservicesd [30]
Path: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/Support/coreservicesd
Identifier: coreservicesd
Version: 1037
Code Type: X86-64 (Native)
Parent Process: launchd [1]
User ID: 0

Date/Time: 2012-09-02 03:37:11.669 +0100
OS Version: Mac OS X 10.8.1 (12B19)
Report Version: 10

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

and in syslogd:

Process: syslogd [20]
Path: /usr/sbin/syslogd
Identifier: syslogd
Version: 148.7
Code Type: X86-64 (Native)
Parent Process: launchd [1]
User ID: 0

Date/Time: 2012-09-02 03:37:05.200 +0100
OS Version: Mac OS X 10.8.1 (12B19)
Report Version: 10

Crashed Thread: 5

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00007fff4ebb8f2c

And in window server:

Process: WindowServer [111]
Path: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/WindowServer
Identifier: WindowServer
Version: 322
Code Type: X86-64 (Native)
Parent Process: launchd [1]
User ID: 88

Date/Time: 2012-09-02 01:14:56.982 +0100
OS Version: Mac OS X 10.8 (12A269)
Report Version: 10

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000011bec5070

Same for finder, all crashes have:

Exception Type: EXC_BAD_ACCESS (SIGSEGV)

Yes I could post full logs but it seems to be always the same reason!

I read that this type of exception maybe memory related so does this confirm that I have faulty ram?

Any help would be great as at the moment I have a useable system until I run a few apps and do something that maybe memory intensive!

Test memory. Download Memtest , http://www.memtest.org/ , burn iso and then boot to the cd.

Ok ran memtest86 from boot USB, came back with:

Error confidence value: 118
4026880 errors on 10 passes (still going)

000a0e10080 - 000a0e13ff8

Looks like its hardware related then! Definitely have 1 module not working correctly.

Well got some replacement RAM, ran memtest 2 full tests was fine ran the OSX specifc terminal one, worked fine results were:

Test sequence 1 of 2:

Running tests on full 7171MB region...
Stuck Address : ok
Linear PRN : ok
Running comparison tests using 3585MB buffers...
Random Value : ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : ok
Block Sequential : ok
Checkerboard : ok
Bit Spread : ok
Bit Flip : ok
Walking Ones : ok
Walking Zeroes : ok

Test sequence 2 of 2:

Running tests on full 7171MB region...
Stuck Address : ok
Linear PRN : ok
Running comparison tests using 3585MB buffers...
Random Value : ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : ok
Block Sequential : ok
Checkerboard : ok
Bit Spread : ok
Bit Flip : ok
Walking Ones : ok
Walking Zeroes : ok

All tests passed!

So now the computer seems fine! No crashes yet and everything has been running for 5 hours! Now just to look at the USB 3 ports lol

digitalanalogue, I had similar problems and it turned out I also had a faulty RAM module.

I had following symptoms:

- Frequent kernel panics.

- External or internal disks didn't mount.

- External or internal disks needed to be verified or repaired (then Verify Disk or Repair Disk function didn't solve the problem).

- Constant freezing.

- Apps crashed on start.

After running memtest (thanks kduvernay) it showed one of the modules was faulty. I've removed the module and have been problem-free for several days now. Fingers crossed.