EXCEPTION_ACCESS_VIOLATION (0xc0000005)

[nourab]

I'm developing an application that implements BOW model using javacv
I have a c++ code written using opencv that implements BOW model  (cpp jointed file ) that I try to convert it to javacv  (2 jointed java  file ) 

when I trying to run it I got this error : 
_____________________________

A fatal error has been detected by the Java Runtime Environment:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7350b1f2, pid=6900, tid=3984

JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)
Java VM: Java HotSpot(TM) Client VM (24.45-b08 mixed mode, sharing windows-x86 )
Problematic frame:
C  [MSVCR90.dll+0x3b1f2]

Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

An error report file with more information is saved as:
C:\Users\Desktop\workspaceJAVACV\demo\hs_err_pid6900.log

If you would like to submit a bug report, please visit:
http://bugreport.sun.com/bugreport/crash.jsp
The crash happened outside the Java Virtual Machine in native code.
See problematic frame for where to report the bug.

____________________
how to solve this problem ?

[Samuel Audet]

Can you look inside the "C:\Users\Desktop\workspaceJAVACV\demo\hs_err_pid6900.log" file and find at which line exactly your code crashes? thanks!

[nourab]

Hi , 

I tried to run my code on ubuntu rather than on windows and i change it 
but i still have a fatal exception !

__________

# A fatal error has been detected by the Java Runtime Environment:

#

#  SIGSEGV (0xb) at pc=0xb6d2929a, pid=4484, tid=3062090560

#

# JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)

# Java VM: Java HotSpot(TM) Server VM (24.45-b08 mixed mode linux-x86 )

# Problematic frame:

# V  [libjvm.so+0x4c029a]  jni_SetIntField+0x7a

#

# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again

#

# An error report file with more information is saved as:

# /home/noura/workspaceJAVACV/demo/hs_err_pid4484.log

#

# If you would like to submit a bug report, please visit:

#   http://bugreport.sun.com/bugreport/crash.jsp

#

_____________

this is the code that i think it is the source of the error 

 _______________

public void extractBOWDescriptor (String baseurl , CvMat descriptors ) 

 {

File dir = new File(baseurl);

for (File child : dir.listFiles())

{

if (child.isDirectory())

{

System.out.println("Processing directory"+child.getAbsolutePath());

System.out.println("+"+child.getName());

extractBOWDescriptor(child.getAbsolutePath(), descriptors);

}

 

else 

{

if (child.getName().contains(".jpg"))

{

System.out.println("Processing file" + child.getName());

 

final CvMat image = cvLoadImageM(child.getAbsolutePath());

 

if (!image.empty())

{

   KeyPoint keypoints = new KeyPoint(null); // a verifier 

featureDetector.detect(image, keypoints, null);

 

   if (keypoints.isNull())

   {

    System.out.println("Warning: Could not find key points in image: "+

   

    child.getName()

    );

   }

 

   else 

   {

    CvMat BoWdescriptors = CvMat.create(keypoints.capacity(),128, opencv_core.CV_32F , 1);

    bDescriptorExtractor.compute(image, keypoints, BoWdescriptors, null, null);

   

       descriptors.put(descriptors);

  //     float label=Float.parseFloat(child.getName());

// labels.put(label);

   

    }

}

 

else 

{

System.out.println("Warning: Could not read image: "+ child.getName());

}

 

}

}

}

 

 }

______________________________________

---------------  T H R E A D  ---------------

Current thread (0xb6607800):  JavaThread "main" [_thread_in_vm, id=4490, stack(0xb67ec000,0xb683d000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x00000000

Registers:

EAX=0x00000000, EBX=0xb712c574, ECX=0xb774f000, EDX=0xb7154200

ESP=0xb683bce0, EBP=0xb683bd08, ESI=0xb6607800, EDI=0x00000052

EIP=0xb6d2929a, EFLAGS=0x00010246, CR2=0x00000000

Top of Stack: (sp=0xb683bce0)

0xb683bce0:   000007d0 00000004 0000000e 9fa3d330

0xb683bcf0:   b6607930 b6607800 b6607800 6d616270

0xb683bd00:   42420000 00000000 b6607930 6d5f88f9

0xb683bd10:   b6607930 00000000 00000052 00000000

0xb683bd20:   b683bd9c 00000000 b3624800 b35e9b59

0xb683bd30:   b712c574 b683be94 00000001 00000000

0xb683bd40:   00000000 00000000 63345a80 00000000

0xb683bd50:   597867b0 00000000 00000000 00000000 

Instructions: (pc=0xb6d2929a)

0xb6d2927a:   85 a9 00 00 00 8b 46 18 a9 00 00 00 30 0f 85 9b

0xb6d2928a:   00 00 00 c7 86 6c 01 00 00 06 00 00 00 8b 45 0c

0xb6d2929a:   8b 10 8b 83 a0 e2 ff ff 8b 4a 04 80 38 00 74 20

0xb6d292aa:   8b 45 14 89 45 ec 8d 45 ec 50 8b 45 0c 6a 49 6a 

Register to memory mapping:

EAX=0x00000000 is an unknown value

EBX=0xb712c574: <offset 0x8c3574> in /usr/lib/jvm/java-7-oracle/jre/lib/i386/server/libjvm.so at 0xb6869000

ECX=0xb774f000 is an unknown value

EDX=0xb7154200: <offset 0x8eb200> in /usr/lib/jvm/java-7-oracle/jre/lib/i386/server/libjvm.so at 0xb6869000

ESP=0xb683bce0 is pointing into the stack for thread: 0xb6607800

EBP=0xb683bd08 is pointing into the stack for thread: 0xb6607800

ESI=0xb6607800 is a thread

EDI=0x00000052 is an unknown value

Stack: [0xb67ec000,0xb683d000],  sp=0xb683bce0,  free space=319k

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

V  [libjvm.so+0x4c029a]  jni_SetIntField+0x7a

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)

j  com.googlecode.javacv.cpp.opencv_features2d$BOWImgDescriptorExtractor.compute(Lcom/googlecode/javacv/cpp/opencv_core$CvArr;Lcom/googlecode/javacv/cpp/opencv_features2d$KeyPoint;Lcom/googlecode/javacv/cpp/opencv_core$CvMat;Lcom/googlecode/javacv/cpp/opencv_core$IntVectorVector;Lcom/googlecode/javacv/cpp/opencv_core$CvMat;)V+0

j  pack.BOW.extractBOWDescriptor(Ljava/lang/String;Lcom/googlecode/javacv/cpp/opencv_core$CvMat;)V+248

j  pack.BOW.extractBOWDescriptor(Ljava/lang/String;Lcom/googlecode/javacv/cpp/opencv_core$CvMat;)V+99

j  pack.Main.main([Ljava/lang/String;)V+67

v  ~StubRoutines::call_stub

__________________________________________________