Segmentation fault crashes matlab, use of BLAS and LAPACK libraries

Hi, I am using MEX to compile a C code with MATLAB R2011b 64 bit, I managed to generate the .mexw64 file, however when I try to use the file, I get a segmentation fault causing Matlab to crash.

The error log file is as follows.

MATLAB crash <file:C>:\Users\himans\AppData\Local\Temp\matlab_crash_dump.12196-3:

------------------------------------------------------------------------ Segmentation violation detected at Mon Nov 11 11:46:19 2013 ------------------------------------------------------------------------

Configuration: Crash Decoding : Disabled Default Encoding: windows-1252 MATLAB Root : C:\Program Files\MATLAB\R2011b MATLAB Version : 7.13.0.564 (R2011b) Operating System: Microsoft Windows 7 Processor ID : x86 Family 6 Model 10 Stepping 7, GenuineIntel Virtual Machine : Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot™ 64-Bit Server VM mixed mode Window System : Version 6.1 (Build 7601: Service Pack 1)

Fault Count: 3

Abnormal termination: Segmentation violation

Register State (from fault): RAX = 0000000000000000 RBX = 19801700577d99e0 RCX = 0066005c00000008 RDX = 19801700577d99e0 RSP = 000000002856eb60 RBP = 0066005c0000000c RSI = 0000000000000000 RDI = 1cb019e0577d9a40

   R8 = 1cb019e0577d9a40   R9 = 13201140577d9920
  R10 = 13201140577d9920  R11 = 16501420577d9980
  R12 = 16501420577d9980  R13 = 000000002856ecc0
  R14 = 0000000000000000  R15 = 0000000000000000

RIP = 0000000026baa3b0  EFL = 00010246

   CS = 0033   FS = 0053   GS = 002b

Stack Trace (from fault): [ 0] 0x0000000026baa3b0 C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+11969456 ( xerbla+10451632 ) [ 1] 0x00000000266dfbff C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+06945791 ( xerbla+5427967 ) [ 2] 0x00000000260e840d C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+00689165 ( ZUPMTR+353341 ) [ 3] 0x0000000027f3d82c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00448556 ( _kmp_invoke_microtask+000140 ) [ 4] 0x0000000027f1bc4e C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00310350 ( _kmpc_invoke_task_func+000158 ) [ 5] 0x0000000027f1962c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00300588 ( _kmp_fork_call+023196 ) [ 6] 0x0000000027f3e507 C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00451847 ( _kmp_launch_worker+000551 ) [ 7] 0x000000007705652d C:\Windows\system32\kernel32.dll+00091437 ( BaseThreadInitThunk+000013 ) [ 8] 0x000000007728c541 C:\Windows\SYSTEM32\ntdll.dll+00181569 ( RtlUserThreadStart+000033 )

Abnormal termination: Segmentation violation

Register State (from fault): RAX = 0000000000000000 RBX = 3fc03980577d9c20 RCX = 0066005c00000008 RDX = 3fc03980577d9c20 RSP = 000000002867ed60 RBP = 0066005c0000000c RSI = 0000000000000000 RDI = 42f03c60577d9c80

   R8 = 42f03c60577d9c80   R9 = 396033c0577d9b60
  R10 = 396033c0577d9b60  R11 = 3c9036a0577d9bc0
  R12 = 3c9036a0577d9bc0  R13 = 000000002867eec0
  R14 = 0000000000000000  R15 = 0000000000000000

RIP = 0000000026baa3b0  EFL = 00010246

   CS = 0033   FS = 0053   GS = 002b

Stack Trace (from fault): [ 0] 0x0000000026baa3b0 C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+11969456 ( xerbla+10451632 ) [ 1] 0x00000000266dfbff C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+06945791 ( xerbla+5427967 ) [ 2] 0x00000000260e840d C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+00689165 ( ZUPMTR+353341 ) [ 3] 0x0000000027f3d82c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00448556 ( _kmp_invoke_microtask+000140 ) [ 4] 0x0000000027f1bc4e C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00310350 ( _kmpc_invoke_task_func+000158 ) [ 5] 0x0000000027f1962c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00300588 ( _kmp_fork_call+023196 ) [ 6] 0x0000000027f3e507 C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00451847 ( _kmp_launch_worker+000551 ) [ 7] 0x000000007705652d C:\Windows\system32\kernel32.dll+00091437 ( BaseThreadInitThunk+000013 ) [ 8] 0x000000007728c541 C:\Windows\SYSTEM32\ntdll.dll+00181569 ( RtlUserThreadStart+000033 )

Abnormal termination: Segmentation violation

Register State (from fault): RAX = 0000000000000000 RBX = 2ca02840577d9b00 RCX = 0066005c00000008 RDX = 2ca02840577d9b00 RSP = 00000000285feae0 RBP = 0066005c0000000c RSI = 0000000000000000 RDI = 2fd02b20577d9b60

   R8 = 2fd02b20577d9b60   R9 = 26402280577d9a40
  R10 = 26402280577d9a40  R11 = 29702560577d9aa0
  R12 = 29702560577d9aa0  R13 = 00000000285fec40
  R14 = 0000000000000000  R15 = 0000000000000000

RIP = 0000000026baa3b0  EFL = 00010246

   CS = 0033   FS = 0053   GS = 002b

Stack Trace (from fault): [ 0] 0x0000000026baa3b0 C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+11969456 ( xerbla+10451632 ) [ 1] 0x00000000266dfc9b C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+06945947 ( xerbla+5428123 ) [ 2] 0x00000000260e840d C:\Program Files\MATLAB\R2011b\bin\win64\mkl.dll+00689165 ( ZUPMTR+353341 ) [ 3] 0x0000000027f3d82c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00448556 ( _kmp_invoke_microtask+000140 ) [ 4] 0x0000000027f1bc4e C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00310350 ( _kmpc_invoke_task_func+000158 ) [ 5] 0x0000000027f1962c C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00300588 ( _kmp_fork_call+023196 ) [ 6] 0x0000000027f3e507 C:\Program Files\MATLAB\R2011b\bin\win64\libiomp5md.dll+00451847 ( _kmp_launch_worker+000551 ) [ 7] 0x000000007705652d C:\Windows\system32\kernel32.dll+00091437 ( BaseThreadInitThunk+000013 ) [ 8] 0x000000007728c541 C:\Windows\SYSTEM32\ntdll.dll+00181569 ( RtlUserThreadStart+000033 )

Is this because I haven't modified the code using mwSize and mwIndex for 64 bit compatibility ? I tried searching on how to modify the code but started getting more and more confused. Can someone guide me to some article on how to modify the code so as to run the code without the segmentation error.

Thanks for the help Himanshu