crashing application when accessing phonebook ios

ios memory leak when accessing phone book here is my orignal question and this is crash log. Memory leak problem has been resolved but application is crash when I access the contact and pop to navigation controller again push and accessing the contact, repeating this process 3-4 time and app will crash.

crash log:

Aug  6 19:11:08 IPad  <Warning>: Fetching contact info ----> 

Aug  6 19:11:08 IPad  <Notice>: (Warn ) [ABLog]: <ABSource.c ABAddressBookCopyDefaultSource:111> Actual default source doesn't exist

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: Got a 'k' packet, killing the inferior process.

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: Sending ptrace PT_KILL to terminate inferior process.

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: 38 +82.923904 sec [01c1/060b]: error: ::ptrace (request = PT_THUPDATE, pid = 0x01c2, tid = 0x2603, signal = 0) err = Resource busy (0x00000010)

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: 39 +0.005248 sec [01c1/060b]: error: ::task_info ( target_task = 0x1c0b, flavor = TASK_BASIC_INFO, task_info_out => 0x27d93d48, task_info_outCnt => 8 ) err = (os/kern) invalid argument (0x00000004)

Aug  6 19:11:57 IPad com.apple.launchd[1] (UIKitApplication:com.baltech.gaurav[0x7f50][450]) <Notice>: (UIKitApplication:com.baltech.gaurav[0x7f50]) Exited: Killed: 9

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: Waited 20 ms for process to be reaped (state = Exited)

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: 40 +0.025414 sec [01c1/1207]: error: ::read ( -1, 0x4089ec, 18446744069414585344 ) => -1 err = Bad file descriptor (0x00000009)

Aug  6 19:11:57 IPad com.apple.debugserver-310.2[449] <Warning>: Exiting.

Aug  6 19:11:57 IPad backboardd[28] <Warning>: Application 'UIKitApplication:com.baltech.gaurav[0x7f50]' exited abnormally with signal 9: Killed: 9

It is my updated code

- (NSArray *)getAllContacts{

    CFErrorRef *error = nil;


    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, error);

    __block BOOL accessGranted = NO;
    if (ABAddressBookRequestAccessWithCompletion != NULL) { // we're on iOS 6
        dispatch_semaphore_t sema = dispatch_semaphore_create(0);
        ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
            accessGranted = granted;
            dispatch_semaphore_signal(sema);
        });
        dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);

    }
    else { // we're on iOS 5 or older
        accessGranted = YES;
    }

    if (accessGranted) {

#ifdef DEBUG
        NSLog(@"Fetching contact info ----> ");
#endif


        ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, error);
        ABRecordRef source = ABAddressBookCopyDefaultSource(addressBook);
        CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, source, kABPersonSortByFirstName);
        CFIndex nPeople = ABAddressBookGetPersonCount(addressBook);
        NSMutableArray* items = [NSMutableArray arrayWithCapacity:nPeople];


        for (int i = 0; i < nPeople; i++)
        {
            ContactsData *contacts = [ContactsData new];

            ABRecordRef person = CFArrayGetValueAtIndex(allPeople, i);

            //get First Name and Last Name

            contacts.firstNames = (__bridge_transfer NSString*)ABRecordCopyValue(person, kABPersonFirstNameProperty);

            contacts.lastNames =  (__bridge_transfer NSString*)ABRecordCopyValue(person, kABPersonLastNameProperty);

            if (!contacts.firstNames) {
                contacts.firstNames = @"";
            }
            if (!contacts.lastNames) {
                contacts.lastNames = @"";
            }

            // get contacts picture, if pic doesn't exists, show standart one

            //            NSData  *imgData = (__bridge NSData *)ABPersonCopyImageData(person);
            //            contacts.image = [UIImage imageWithData:imgData];
            //            if (!contacts.image) {
            //                contacts.image = [UIImage imageNamed:@"NOIMG.png"];
            //            }
            //            //get Phone Numbers
            //
            //            NSMutableArray *phoneNumbers = [[NSMutableArray alloc] init];
            //
            //            ABMultiValueRef multiPhones = ABRecordCopyValue(person, kABPersonPhoneProperty);
            //            for(CFIndex i=0;i<ABMultiValueGetCount(multiPhones);i++) {
            //
            //                CFStringRef phoneNumberRef = ABMultiValueCopyValueAtIndex(multiPhones, i);
            //                NSString *phoneNumber = (__bridge NSString *) phoneNumberRef;
            //                [phoneNumbers addObject:phoneNumber];
            //
            //                //NSLog(@"All numbers %@", phoneNumbers);
            //
            //            }


            //            [contacts setNumbers:phoneNumbers];

            //get Contact email

            NSMutableArray *contactEmails = [NSMutableArray new];
            ABMultiValueRef multiEmails = ABRecordCopyValue(person, kABPersonEmailProperty);

            for (CFIndex i=0; i<ABMultiValueGetCount(multiEmails); i++) {
                CFStringRef contactEmailRef = ABMultiValueCopyValueAtIndex(multiEmails, i);
                NSString *contactEmail = (__bridge_transfer NSString *)contactEmailRef;

                [contactEmails addObject:contactEmail];
                // NSLog(@"All emails are:%@", contactEmails);


            }
            CFBridgingRelease(multiEmails);
            [contacts setEmails:contactEmails];





            //---- if no mail id found then dont add contact
            if (contactEmails && contactEmails.count != 0) {
                [items addObject:contacts];
            }


#ifdef DEBUG
            //            NSLog(@"Person is: %@ # %@", contacts.firstNames,contacts.lastNames);
            //            NSLog(@"Phones are: %@", contacts.numbers);
            //            NSLog(@"Email is:%@", contacts.emails);
#endif




        }
        CFBridgingRelease(addressBook);
        CFBridgingRelease(allPeople);
        CFBridgingRelease(source);

        return items;



    } else {
#ifdef DEBUG
        NSLog(@"Cannot fetch Contacts :( ");
#endif
        return nil;


    }

}

thanks in advance :)

You are using the wrong array count value. Try:

CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, source, kABPersonSortByFirstName);
CFIndex nPeople = CFArrayGetCount(allPeople);

BTW I've seen this code before with the same error. Where did you get it?