Windows error 0x0000000C, 12

GLSL uniform only being updated by unrelated calls

I have an extremely basic GLSL program which is failing to properly update a uniform value after the first draw call. No errors are received from glGetError, no errors are reported in the info logs when compiling and linking the shaders, and all uniform locations are valid. Vertex shader: #version [...] read more

sem_release(): failed to release key 0xc: Invalid argument

I'm using semaphore to synchronize some parts in my application. On releasing of the semaphore (sem_release) I'm getting this warning: > sem_release(): failed to release key 0xc: Invalid argument First I don't know whether the semaphore released, but since I'm not getting "true" as result, I guess it's not releasing. [...] read more

Restoring Printer Settings

We're trying to standardise our printing environment to provide consistent settings across our various print queues. To do this, we would like create a settings file per model of printer so that they can be used to quickly deploy new Windows print servers and queues with standard settings. We've used [...] read more

Can't get STM32F103RB usart1 to communicate with hc-05

I am unable to connect USART_1 with bluetooth hc-05. The Microcontroller is STM32F103RB. Here's the code (I am not using any library) #define APB2_FREQ 72000000 void USART1_Send(char* data) { unsigned int length = 0; while(data[length] != '\0') ++length; int i = 0; while(i < length) { while((USART1_SR & 0x00000080) == [...] read more

SO_ATTACH_REUSEPORT_CBPF socket option unexpected behavior

I am trying use a port from two applications and have each of them receive the packet from a different set of IP addresses. In order to achieve this, I use the SO_REUSEPORT and SO_ATTACH_REUSEPORT_CBPF socket options. My code is as follows: parentfd = socket(AF_INET, SOCK_STREAM, 0); if (parentfd < [...] read more

IOS 6 MKMapView crashes on [EAGLContext setCurrentContext]

We are developing an iPad application starting from map view with annotations. By using storyboard when We switch to another view which has an opengl based charting solution (shinobi). On return to the view with map it has no problem until a touch on the map to move it. As [...] read more

iOS: App crash "-[MFMailComposeInternalViewController _notifyCompositionDidFinish]"

according to crashlytic someone crash while using the iPad. The crash error they received is -[MFMailComposeInternalViewController _notifyCompositionDidFinish] I don't know how this could've occurred. Here is the exception Crashed: com.apple.main-thread EXC_BAD_ACCESS KERN_INVALID_ADDRESS at 0x0000000c Here is the raw data Thread : Crashed: com.apple.main-thread 0 libobjc.A.dylib 0x30fa4f46 objc_msgSend + 5 1 [...] read more

"Anomaly" in signed integer in C

I'm currently writing a lecture on ARM optimization, specifically on vector machines such as NEON as the final target. And since vector machines don't fare well with if-else slaloms, I'm trying to demonstrate how to get rid of them by bit-hacking. I picked the "saturating absolute" function as an example [...] read more

gcc arm executable "no such file orr directory", wrong dynamic lib

I am trying to make a usable setup for gcc-linaro-arm-linux-gnueabihf-4.8-2013.11 on windows. Something happens at dynamic link: $(CC)-gcc -o test main.c -Wall -lc The program compiles fine, but when deployed to ARM shows: "No such file or directory" Searching the issue, seems that static build works but executable is huge: [...] read more

CCID RDR_to_PC_DataBlock Error Problem 0xFE ICC_MUTE - Java Smart Card Reading

I am a beginner programmer and have problem about sending CCID Command to the Smart Card via Usb Host on Android mobile device. This time I sent PC_to_RDR_IccPowerOn CCID command PC_to_RDR_IccPowerOn to activate the card and received ATR response back. Next process I sent PC_to_RDR_XfrBlock CCID command to the card [...] read more

Application gets crashed and displays a Error in Thread(Fatal Signal)

In LogCat : 12-16 01:49:49.139: A/libc(790): Fatal signal 11 (SIGSEGV) at 0x0000000c (code=1), thread 806 (Thread-93) 12-16 01:49:49.169: A/libc(790): Fatal signal 11 (SIGSEGV) at 0x0000000c (code=1), thread 824 (Thread-112) I wrote a code for creating Threads one by one when a button is clicked.It switches to multiple screens. when i [...] read more

What is the supported format for compressed 4-channel audio file in iOS?

First of all I'm a noob in both iOS and audio programming, so bear with me if I don't use the correct technical terms, but I'll do my best! WHAT WE WANT TO DO: In an iOS app we are developing, we want to be able to play sounds throughout [...] read more

Access violation reading location 0x0000000c

In my application I disable the Start menu using 'LowLevelKeyboardProc'. But i get the following error when i pressing the tab key continuously. The Error.. > Unhandled exception at 0x00352d58 in Timer_soosai.exe: 0xC0000005: Access > violation reading location 0x0000000c. > > 00352D58 mov eax,dword ptr [ecx+0Ch] /*This is the line [...] read more

First-chance exception at ...: Access violation reading location ... when debugging using Visual Studio 2010

I try so hard to catch from legacy code access violation keep getting : First-chance exception at 0x57e77e1c in YouTubeLocal.exe: 0xC0000005: Access violation reading location 0x0000000c. My stack looks like this: Qt5Guid.dll!57e77e1c() [Frames below may be incorrect and/or missing, no symbols loaded for Qt5Guid.dll] Qt5Guid.dll!57e75604() Qt5Guid.dll!57ed520b() Qt5Guid.dll!57dcf18b() > msvcr100d.dll!_unlock(int locknum=0x00000004) [...] read more

Pyshark: can only get first field value if same key name (field name) show multiple entries with different value

I am using Pyshark to parse Wireshark sniffer log, and I used exported Json format file (based on pcapny file) to find field names when use 'get_field_value' function to retrieve field value. For example, in order to get BSSID value: * In Json format file, this info is displayed as [...] read more

AVPlayerPeriodicCaller crash

I’m getting crash, and I can’t figure out what is causing it. Here what I’m getting from crash report: Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000c Triggered by Thread: 0 Thread 0 Crashed: 0 AVFoundation 0x2f271946 -[AVPlayerPeriodicCaller _effectiveRateChanged] + 418 1 AVFoundation 0x2f270fc8 __43-[AVPlayerTimelyCaller _timebaseDidChange:]_block_invoke + 232 2 [...] read more

I'm trying to use AVQueuePlayer to create a seamless audio loop, however, I don't know why there is a small silent pause between loops?

I have a simple audio file in .wav format (the audio file is cut perfectly to loop). I've tried different methods to loop it. My first attempt was simply using AVPlayer and NSNotification to detect when audioItem ended to seek time at zero and play again. However, there was clearly [...] read more

classic BPF on Linux: filter does not work

I'm trying to test classic BPF for packet filtering by attaching it to raw socket. I want to catch TCP packets with first byte of source port == 8 (tcpdump 'tcp[1:1] = 0x50'), but I see no incoming packets on the socket. Without filter my code works OK. Here is [...] read more

CREATE ASSEMBLY fails with "Unable to resolve token"

I am trying to upload some CLR code to an SQL Server 2016 (Developer edition) instance. Overall, the structure is like this: * One CLR UDF depends on assembly A * Another CLR UDF depends on assembly B * Both A and B depend on assembly C The target framework [...] read more

AUGraph FormatConverter (AUConverter) render notify contains NULL ioData buffer

I am working on a iOS project and need to capture input from the microphone and convert it to ULaw (to send out a data stream). I am using an AUGraph with a converter node to accomplish this. The graph is created successfully and initialized, however in my render notify [...] read more

Subversion, connection reset

I am having a great deal of difficulty performing "history" oriented operations in subversion. Installed version is 1.6.x on a LAMP Ubuntu server. I am using Eclipse as a SVN client but I've also tried it with SVNx, and Tortoise on a Windows instance. The error I am getting when [...] read more

How should I initialise my stm32 ( f215 )

I am trying to make an extremely minimal stm32f215 firmware to teach myself its boot-up intricacies. As it is now I have this dump which, to my knowledge, should write the stack address to r0 and loop forever: firmware-d: file format elf32-littlearm Disassembly of section .isr_vector: 08000000 <vector>: 8000000: 20002000 [...] read more

Capturing PTP packets with Linux raw socket

I want to implement a C program that captures all the Precision-Time-Protocol (PTP) frames on the Ethernet, so I created a raw socket and attached a filter for PTP, I use recvmsg() to read data from the socket. The first issue is that I wasn't receiving any PTP frames so [...] read more

Supported OpenSL ES Features in Android

Android is supposed to support 3D audio via the OpenSL es API which is accesible via the NDK. That more or less works, I managed it to play sound via a created player and an output mix. But when I try to realise a listener with a 3D location interface [...] read more

Control AMIS-30543 with STM32F030R8 via SPI

I'm attempting to get my STM32 board to control a stepper motor (using an AMIS-30543 driver, 26M024B2B stepper motor) using SPI. I'm using Keil uVision 5 and taking a bare-metal approach in C. My problem is that the motor is not spinning and I'm unsure where the error(s) are hiding. [...] read more

CubeMX-generated USB HID device sends wrong data when both endpoint and PMA address are changed

I'm debugging a problem with a composite device that I'm creating, and have recreated the issue in freshly-CubeMX-generated HID-only code, to make it easier to resolve. I've added small amount of code to main() to let me send USB HID mouse-clicks, and flash an LED, when the blue-button is pressed. [...] read more

Why static final int is used in android standard classes avoiding enum?

In standart android classes static final int vars is used to represent different flags. For example, View visability flags: /** @hide */ @IntDef({VISIBLE, INVISIBLE, GONE}) @Retention(RetentionPolicy.SOURCE) public @interface Visibility {} /** * This view is visible. * Use with {@link #setVisibility} and <a href="#attr_android:visibility">{@code * android:visibility}. */ public static final [...] read more

change in endianness while ethernet transmission

I work with zedboard and vivado v2017.3. I am trying to send data stored in a register(slv_reg0 in PL section of Zynq) pointed by baseaddr_p in the following program. I use lwip echo server application to read this address and send it to the PC via Ethernet. This part of [...] read more

Opendaylight Can't Connect to HP Aruba SDN Switch

My lab recently procure an HP (Aruba) 2920 24G and I was told to test it out on an OpenDaylight controller. First, I setup the OpenDaylight Carbon (0.7.2) with dlux features, odl-mdsal-apidocs, odl-restconf, and odl-l2switch-switch installed. The Opendaylight can communicate with my other switches including an SBC running an Open [...] read more

Qt Application throws an Access violation exception during startup

I have a Qt Application that works in Debug mode without any problems. Since two days I'm trying to make it work in Release mode. After some Project property modification I managed to compile without errors. But unfortunalty the application crashes before even reaching the main method. That's my environment: [...] read more

Loading C library in Android

I have little to no understanding how low-level programming languages work, so please bear with me. I need to load compiled C (.so file) library into android 6.0+ (SdkVersion: 23+) Using: static { System.loadLibrary("dsdrv"); } I get an error: FATAL EXCEPTION: main Process: com.logicants.scanner3, PID: 11415 java.lang.UnsatisfiedLinkError: dlopen failed: "/data/app/com.logicants.scanner3-1/lib/arm/libdsdrv.so" [...] read more

LDMIA instruction not working correctly on external SRAM in cortex M4

I am using STM32L486ZG board in thumb mode. I am running a simple bare-metal application without any RTOS. I have external SRAM connected to the board using FSM. The external SRAM is located at address 0x60000000. The system is initialized and running at 72MHz (i have tried this issue with [...] read more

dhclient lease renewal occasionally breaks DNS resolution

I have a set of ec2 instances (ubuntu trusty 14.04) that I have never done any special dhcp configuration with. It's on a VPC with the default dhcp options. For some reason, roughly ever 25 minutes, I see this in my logs (IP's and xid are scrubbed) DHCPREQUEST of 172.16.1.111 [...] read more

Why upgrading to Windows 10 anniversity edition fails

After running upgrade Windows 10 to anniversity edition screen in blank. After computer restart windows 10 restores its previous version. Tried two times but problem persists. How to upgrade ? Earlier Windows 10 works OK, all windows 10 uodates are installed. C:\$WINDOWS.~BT\Sources\Panther\setuperr.log contains: 2016-08-06 11:20:32, Error MOUPG CDlpActionImpl<class CDlpErrorImpl<class CDlpObjectInternalImpl<class [...] read more

How to debug an RPM that will not uninstall

I've built an RPM using redline rpm library for java. When I try to uninstall the rpm it says it was removed but when I do a list it is still there and says it is still installed. Here is the results of my uninstall with as much debug as [...] read more

Windows registry -- Malware

I wanted to analyse some malware but I'm stuck with the registry of windows, and was wondering if some of you could help me to understand some of it. It actually modified some values in the registry such as: > HKLM\SYSTEM\ControlSet001\Control\ServiceCurrent\: 0x0000000A > HKLM\SYSTEM\ControlSet001\Control\ServiceCurrent\: 0x0000000C > HKLM\SYSTEM\CurrentControlSet\Control\ServiceCurrent\: 0x0000000A > HKLM\SYSTEM\CurrentControlSet\Control\ServiceCurrent\: [...] read more

Error in configuring SQL server in WSL

Windows 10: Version 1709 (OS Build 16299.19) WSL: Ubuntu 16.04 Following the guide here. I get an error in Step 4 when running sudo /opt/mssql/bin/mssql-conf setup ➜ x git:(master) ✗ sudo /opt/mssql/bin/mssql-conf setup [sudo] password for devlin: Locale en_GB not supported. Using en_US. Choose an edition of SQL Server: 1) [...] read more

Disassemble instruction set for 8051 microcontroller

I have the following hex opcode sequence for a 8051 microcontroller 785679107A247BFD7C347D407E51745568F869F96AFA6BFB6CFC6DFD6EFE I found this repo that converts hex to instruction sequences https://github.com/anarcheuz/8051-disassembler. Using that I was able to get the following assembly instructions x00000000: 37 38 MOV 38 (R0,#immed) 0x00000002: 35 ANL A,@R0 0x00000004: 37 39 MOV 39 (R1,#immed) [...] read more

Ubuntu 16.04 fatal JRE error

Since yesterday all my IntelliJ applications quit running due to a JVM fatal error. This it the error I get everytime: # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0xa7b55215, pid=23009, tid=0x7fa5db40 # # JRE version: OpenJDK Runtime Environment (8.0_121-b13) [...] read more

Why can't I stop this thread from the Linux kernel?

Edit: Clarification -- This is Linux kernel code. I send SIGSTOP to a thread and then call wait_task_inactive to make sure it stopped. But the CPU RCU-stalls judging by the kernel log. I have no spin-lock acquired and I should have root privileges. I should also mention that the thread [...] read more

UART Communication Between STM32F03 and ESP-8266-01

I'm attempting to get a smartphone app to communicate with an MCU (STM32F030R8). The step I'm currently on is getting the WiFi module to talk with the MCU. I'm able use the AT firmware to configure the ESP when using an Arduino Uno/PC terminal, but want to essentially do the [...] read more

Nativescript - iOS build fails with error code 2

I have been trying to build the iOS version using Nativescript sidekick for two days now without luck. It used to build just fine in the past. Environment information 1. Sidekick Version: 1.19.2-v.2019.11.18.2 (latest) 2. NativeScript CLI version: 6.2.2 3. CLI extension nativescript-cloud version: 1.19.3 4. CLI extension nativescript-starter-kits version: [...] read more

SIGSEGV on JNIEnv->CallStaticObjectMethod

I'm trying to create a JThrowable in C code when an error value is returned from a native library. A SIGSEGV is generated when I call (*env)->CallStaticObjectMethod(env, exceptionClass, mid, errCode);. This is the C code that creates the exception: jthrowable makeGPIOException(JNIEnv *env, int errCode) { printf("makeGPIOException %d\n", errCode); jclass exceptionClass [...] read more

Linking error while cross compiling Qt5 for Beaglebone

Dear stackoverflow community. I'm cross-compiling Qt 5.12 for my Beaglebone Black with EGL support. The host OS is Ubuntu 18.04.1 LTS (x64) running in a VM. I have installed any possible dependcies (I could find in different posts) on the target (and some on the host as well) and copied [...] read more

Interpreting Output of CAShow in Core Audio

I've created a simple AUGraph - Remote IO, mixer and one callback (to write the mic input to a file) - however I don't think it's configured the way I think it is. I'm trying to use CAShow() to understand what I've actually created, but I'm struggling to reconcile its [...] read more

Why I don't receive any packets using BPF with udp socket?

GOAL: write a BPF filter which allow just UDP packets from a specific src address and attach it to and UDP socket. PROBLEM: if I execute the program and I try to send udp packets from a VM which has the correct src IP I don't receive none of them [...] read more

Problem compiling IDL created with OleView

To correct a problem with the name of the value for the enum, after searching, that I need to modify the TLB file of my DLL. The first step that I need to do is to create the IDL file. So I use Oleview to create the file. Before doing [...] read more

application creating muant handles and never frees them

My c++ application is creating mutant handles. I couldn't find where the handle is being created, so I used Windbg and with !htrace. It doesnt give the exact function name. All my symbol files are loaded and the application is built in debug mode. !htrace shows open handles but the [...] read more

C - Get File Bytes as Unsigned Int

I need the bytes of a BIN file converted to a unsigned int, in this format (JavaScript): p.write4(shellcode.add32(0x00000000), 0x00000be9); p.write4(shellcode.add32(0x00000004), 0x90909000); p.write4(shellcode.add32(0x00000008), 0x90909090); p.write4(shellcode.add32(0x0000000c), 0x90909090); p.write4(shellcode.add32(0x00000010), 0x0082b955); p.write4(shellcode.add32(0x00000014), 0x8948c000); p.write4(shellcode.add32(0x00000018), 0x415741e5); p.write4(shellcode.add32(0x0000001c), 0x41554156); p.write4(shellcode.add32(0x00000020), 0x83485354); p.write4(shellcode.add32(0x00000024), 0x320f18ec); p.write4(shellcode.add32(0x00000028), 0x89d58949); p.write4(shellcode.add32(0x0000002c), 0x64b948c0); p.write4(shellcode.add32(0x00000030), 0x77737069); p.write4(shellcode.add32(0x00000034), 0x49000000); p.write4(shellcode.add32(0x00000038), 0x4120e5c1); p.write4(shellcode.add32(0x0000003c), 0x000200bc); p.write4(shellcode.add32(0x00000040), [...] read more

Windows Subsystem for Linux: Error while installing MSSQL Server

I've just downloaded and installed Microsoft SQL Server into my WSL environment. Everything went smoothly as I ran sudo /opt/mssql/bin/mssql-conf setup. I was prompted for the install version (eg Developer), install Language, and administrator password. When prompted to confirm, this happens: Enter the SQL Server system administrator password: Confirm the [...] read more

GDB command 'info sharedlibrary' can't show all the libraries

I am doing cross compile debugging. My build server CPU is amd64. My device CPU is MIPS. When I am trying to do debug the elf file compiled by myself. The gdb can only show ld.so.1 (gdb) info sharedlibrary From To Syms Read Shared Object Library 0x7704f9c0 0x7706c490 Yes (*) [...] read more

No luck compiling __thread using ndk clang 3.4/3.5

I am trying to use __thread in this small program without luck. Any idea if this TLS is supported in ndk 10c clang 3.4/3.5? The same program compiles fine with ndk gcc 4.8/4.9 and native clang/gcc compilers. -------------------------------------------------------------------------------- Here is the program and compile line - __thread int counter; int [...] read more

Reverse enginering a Linux based USB camera

I bought an IP camera on which is installed proprietary software (no HTTP server). This prevents me to integrate it into my home network. I want to replace the software (ELF closed source) by the motion package I already use and add some features. I have no particular system competence [...] read more

Different results between step debugging and running program on tiva c

I have a TIVA tm4c123G I have been trying to create a communication between it and my ADXL345 sensor using I2C protocol which I succeeded in writing and reading from the accelerometer the readings of the device address and the register values that I just wrote to which means everything [...] read more

Convert CAF to WAV, channel layout iOS

I'm using a recorder to record sound from the iPhone in caf format. Then, I want it to be in wav format. So I convert it with a code found on the net : AudioChannelLayout channelLayout; memset(&channelLayout, 0, sizeof(AudioChannelLayout)); channelLayout.mChannelLayoutTag = kAudioChannelLayoutTag_Mono; NSMutableDictionary *outputSettings = [NSMutableDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:audioFormat], AVFormatIDKey, [...] read more

How to fix Can't retrieve group information for user IIS APPPOOL\DefaultAppPool

In Windows 10 Visual Studio Community Edition is used. ASP.NET MVC 4 applications are running from it in Debug Mode using IIS Express installed by Visual Studio. Upgrading to Windows 10 anniversity edition fails with error 0xc1900101 - 0x30018 The installation failed in the FIRST_BOOT phase with an error during [...] read more

Upgrading to Windows 10 fall creator fails

This is the setuperr.log. 2018-01-23 16:43:24, Error MOUPG CDlpActionImpl<class CDlpErrorImpl<class CDlpObjectInternalImpl<class CUnknownImpl<class IMoSetupDlpAction> > > >::Suspend(1066): Result = 0xC1800104 2018-01-23 16:43:24, Error MOUPG CSetupManager::ExecuteInstallMode(723): Result = 0x800705BB 2018-01-23 16:43:24, Error MOUPG CSetupManager::ExecuteDownlevelMode(347): Result = 0x800705BB 2018-01-23 16:43:24, Error MOUPG CSetupManager::Execute(237): Result = 0x800705BB 2018-01-23 16:43:24, Error MOUPG CSetupHost::Execute(375): Result = [...] read more

Windows 10 1607 upgrade issues

Sorry there's a lot of issues, they could be related so I will list them in one question. The issues are:- 1. As posted previously here Windows Update is failing to install the anniversary update. 2. I've since turned off Windows Update, until I can resolve issue #1 and now [...] read more

Win 10 doesn't upgrade to November update or Redstone

I have an one year old ASUS laptop, which originally shipped with Win 8.1. When Windows 10 was released I upgraded without hassle to Windows 10. Trying to update to November update (Threshold-2) or more recently Redstone just doesn't work. The upgrade starts and finally Windows is restarting. Then after [...] read more

JVM crash :- Problematic frame: # V [libjvm.so+0x546720]

Production server has gone down and the preliminary analysis find that it has encountered a JVM crash. The jboss server log and GC log seems to be ok. And the jvm error log mention the “Problematic frame: # V [libjvm.so+0x546720]”. Configuration details:- The server is 64 bit machine having 32 [...] read more

Mobile Storage Host Controller. Power on/off state is ignored when reading from SD card

I'm afraid my question could be board- or SoC-specific. Anyway, I hope someone has experience in it. SoC: RK3308 (board: ROCK Pi S). I read from SD card in bare-metal environment: AArch64 EL3, DDR initialized, MMU/GIC disabled. Reading a block from SD card. I assumed, that BootROM will do all [...] read more

ESP32 Guru Meditation Error: Core 0 panic'ed (LoadProhibited). when using BLE

I am developing on ESP32 WROOWER using Arduino IDE. When I use BLE in my sketch it bricks down, I dont know why. My sketch is big, 1416000 bytes and in Tool>Partition Scheme I selected "HUGE APP 3MB....". Here is the backtrace: Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception [...] read more

According to the standard PCI bus scan but the result is abnormal

This is scanning code uint32_t pci_read_configd(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset) { uint32_t address; uint32_t lbus = (uint32_t)bus; uint32_t ldev = (uint32_t)dev; uint32_t lfunc = (uint32_t)func; address = (uint32_t)((lbus << 16) | (ldev << 11) | (lfunc << 8) | (offset & 0xfc) | ((uint32_t)1 << 31)); out_port32(0xcf8, [...] read more

Computer crashed after attempting to start bettercap http/api server. I copied some errors from journalctl --system. The output baffles me

There is something strange going on here. In the log, it mentions two other private IPs that I definitely do not use. Especially since it's on a different IP subnet. I've noticed this the other day and was actually able to ping them. Still can. The other thing I seen [...] read more

debugger: How to get address of class name in constructor

NOTE: I'm not trying to solve a programming problem; I'm trying to learn. Given this c++ code: #include <iostream> class class1 { public: int attr1 = 12; class1() { } // breakpoint }; int main() { class1 c1; } Using VS2019; breakpoint set per above. In Immediate Window: this 0x000000877f54fcf4 [...] read more

C Structs mnemonics in Linux Socket Filter. trying to make sense

I am trying to discover details about C Linux Socket filter or C Linux BPS sockets. The network filter for socket on this link and other places on this link https://www.kernel.org/doc/Documentation/networking/filter.txt is something like this /* From the example above: tcpdump -i em1 port 22 -dd */ struct sock_filter code[] [...] read more

Java or Solaris issue

so i have been tasked with migrating some machines mainly all windows and all has gone well until now with one machine giving us this error. As i am no software techie type and have never used Solaris or java for apps its puzzled me and I am wondering if [...] read more

debugging powerpc exe with lldb on x86 host

I want to compile and debug powerpc code compiler on ubutnu x86 host. * I installed powerpc gcc toolchain so I will be able to create an executable. * I build lldb and clang. * I wrote an hello world program and compiled with powerpc gcc. * Finally, I loaded [...] read more

Access violation writing location 0x0000000C

I'm struggling with one thing. I'm trying to call game's functions from python api via injected dll. It works sometimes but mostly throws an error: > Exception thrown at 0x1E07F731 (python27.dll) in Soria2.pl.exe: 0xC0000005: > Access violation writing location 0x0000000C the above is log from debugger. My code: std::vector<int> mobList() [...] read more

GCC Posistion independent code: Variables are not loaded correctly

The Program works fine as a stand alone on CC2650 (M3). But it shall be used also as a firmware which is loaded over the radio channel. For this purpose the position independent code is needed. The problem is, all of the variables defined as described below are not set. [...] read more

How to declare COM interface with properties in C++

I'm trying to call a registered COM interface (Inproc dll) in an Eclipse C++ environment (MinGW GCC toolchain). I therefore don't believe that I can simply import the dll typelib the way I typically would in Visual C++. I'm trying to define the interface myself to simplify the function calls [...] read more

qemu run a bare-metal assembly program on xilinx-zynq-a9 machine

I am following this guide on setting up arm emulation setup. The guide is made taking connex machine as example. I want to follow the guide but using xilinx-zynq-a9 machine since I have some experience working with zynq boards. So I have made a .bin file by following the tutorial. [...] read more

Write packet filtering program in ebpf

If I want to write a cBPF program which filter icmp packet I can do it by execute tcpdump with -dd option which > Dump packet-matching code as a C program fragment. ..see the example below How can I write the same program with eBPF instructions ? #include <sys/socket.h> #include [...] read more

Why this program which use BPF and RAW SOCKET just hangs?

GOAL: write a simple packet filter using BPF. The packet filter should allow you to choose the interface. PROBLEM: if I uncomment the third to last instruction in the code (where there is a call to recvfrom, the execution just hangs and I can't see no output (neither "buffer zeroed" [...] read more

Treat a variable value as an address and assign this value to a pointer

I encounter a problem when I try to treat a variable value as an address and assign this value to a pointer. Here are what I did so far. 1. declare a pointer uint32_t *p; 2. declare and initialize two variables uint32_t a = 0x0000000C; uint32_t b = 0x0C00000B; 3. [...] read more

How to implement poll function into Linux kernel module?

I'm trying to implement polling functionality into my simple Linux kernel module called gpio_driver for my Raspberry Pi which should notify the user space poll function about the change of state of one of the GPIO pins (button push). What I did in my gpio_driver is set the internal pull [...] read more

TrueType Font cmap table Format 0 not serializing

Here is the data I am using to construct the table: { version: { type: 'USHORT', value: 0 }, numTables: { type: 'USHORT', value: 1 }, platformID: { type: 'USHORT', value: 0 }, encodingID: { type: 'USHORT', value: 0 }, offset: { type: 'ULONG', value: 12 }, format: { type: [...] read more

bpf_asm returns single ' on compile

I am new to Berkeley Packet Filter . I am trying to learn how to hand roll my own bpf code and then compile it using the bpf_asm. I am working on ubuntu 16.04 with kernel 4.4.0-137. I have downloaded the source code and I am working my way through [...] read more

DS-5 eclipse debug stuck at waitForTargetToStop

First I follow the DS-5 start demo and can debug my code correctly on the ARM FVP -> VE_Coretex_A9x1. Then I follow the link to enable NEON and it needs to set CPU target in the build, the axf file has been built correctly but the debugger stops to work. [...] read more

Android Service with IPC

I have spent the last two days trying to figure this out. I have a service that I am creating to practice with services and IPC. I have checked the code against the book that I am reading it is almost exact only difference being identifiers. I get a ResourcesNotFoundException [...] read more

How Linkers Resolve Global Symbols with the same name Defined at Multiple Places

i am new in programming and i started with c . i am learning in the point How Linkers Resolve Global Symbols Defined at Multiple Places. so i made a small program which says: //main.c #include <stdio.h> void b(void); int x; int a=10; int y =500; int x1 = 2016; [...] read more

ARM car Head Unit - extract rootfs from cpio

Got an ARM powered head unit and im trying to get the rootfs (ramdisk) out of the kernel image. I found uImage header and was able to extract the zImage. Using binwalk i found gzip data in the zImage, which I also extracted. I get a file called 20C50.cpio, which [...] read more

PEVerify Defect: It reports "Type load failed" on valid class compiled with csc.exe for compact framework

A trivial class: public class TestClass : System.ServiceModel.Security.SecurityCredentialsManager { } When compiled using csc against the MS CompactFramework v3.5 will result in a dll that fails to pass peverify, resulting in a "Type load failure". It appears to be an issue with inheriting from the SecurityCredentialsManager class which is part [...] read more

Call a python method from C/C++, and fail in access violation exception

We wanna call a c/c++ extension in python, and in the extension we need to callback one function in the python script. Here is the python code # -*- coding: UTF-8 -*- import sys reload(sys) sys.setdefaultencoding('utf-8') import ctypes class MyClass: def func(self): print "func" open("out.txt","w").write("func") print "func2" return mDll = [...] read more

python pip install not working, failed with error code 1

Nothing ive tried has worked and nothing ive found online has worked, including upgrading setuptools and a couple other things as well as installing visual studio. Heres what I get back, minus some because stackoverflow doesnt like it. C:\Users\ejhsc>py -m pip install pandas Collecting pandas #ifndef _NPY_NPY_CONFIG_H_ #error config.h should [...] read more

White border on maximized .hta file

I am making a fake BSOD from a .hta file. it is perfect except for the fact that there is a white border along the program. Im not sure what to do at this point, i cant find anything on the topic. Can anyone fix this? Here is the code: [...] read more

Should we read BAR type before writing all F's to the BAR or before that?

I am working on a PCI express driver. I am reading the BAR of the root complex device to find the memory type and the size it requires. I know that to find the size of memory we need to write all F's to the BAR and read it back, [...] read more

Breakpoint not working in gdb with QEMU simulating cortex-a8

I am testing some simple code running in the ARM7TDMI, since I haven't found ARM7TDMI simulator on QEMU, I use Cortex-a8 instead (I am not sure if this will lead to bug, total newbie). This is how I run QEMU: qemu-system-arm -machine realview-pb-a8 -cpu cortex-a8 -nographic -monitor null -serial null [...] read more

GDB ARM assembler directives are compiled in a way I don't understand

I have ARM assembly source code: .global _start .text entry: b _start array: .byte 10, 20, 25 eoa: .align _start: ldr r0, =eoa ldr r1, =array mov r3, #0 loop: ldrb r2, [r1], #1 add r3, r2, r3 cmp r1, r0 bne loop stop: b stop Which is a simple [...] read more

Access Violationg when retrieving h_addr_list[0] C++

I am trying to send a GET request and when I try to retrieve h_addr_list[0], I get an access violation error trying to read at location 0x0000000C. hostent* FAR hostname = gethostbyname(sDetails.host); serveraddr.sin_addr.s_addr = *(LPDWORD)hostname->h_addr_list[0]; sDetails.host is set to http://www.google.ca for testing. read more

PCEP error RP object missing

Note: this editor is messing up the text alignment of the wireshark capture Cisco IOS XR router send a PCEP request to ODL PCE for path computation and gets a PCEP Error message type 6 value 1: Mandatory object missing, RP Object missing. Wireshark shows that the PCEP client (the [...] read more

U-Boot uncontrollable debug stepping

I've been having some issues debugging U-Boot. I believe it is due to a RAM configuration error, but I would like to get some clarity on it. My methodology for testing is below, and is based on these instructions for the BeagleBone Black 1. Load board with no memory/image 2. [...] read more

Building & Running VLCLib Tutorial

https://wiki.videolan.org/LibVLC_Tutorial Trying to get a running tutorial of the VLC libraries but getting the Exception in Visual Studios 2017: "Exception thrown at 0x5A3EDF59(libvlc.dll) in Project1.exe: 0xC00000005: Access violation reading from location 0x0000000C." Following the above tutorial. All the code the same except for two places: m = libvlc_media_new_path (inst, "C:\bb.mp4"); [...] read more

PIC32 UART Not recieving data

I am building a device using a PIC32MX250F128D. One of the systems requires use of the UART. Transmitting from the PIC to a putty terminal works fine. However, sending data in the other direction is not working, and I am out of ideas. I am using a cheap USB-UART adapter [...] read more

Cordova project with cordova-plugin-mfp plugin fails with error during runtime

Whenever i use cordova-plugin-mfp in my cordova project & try to build with command cordova build android --release, one of the cordova plugin which contains .so file goes down. But the same project works fine without cordova-plugin-mfp plugin. And the same project works fine with cordova-plugin-mfp plugin building with command [...] read more

C# COM client (RTD)

I'm working with a real time data server (a trading terminal) that has a COM interface for ticker updates. From Excel, I'm able to subscribe to the ticker updates using this - RTD(progId,,topic1,topic2, ...) I'm trying to build an application that will receive these ticker updates without any dependency on [...] read more

Crash log from a published app

This is a log from a crash report of a published app. I don't have any more details about the crash except that it happened on an iPhone 5. I don't see Last Exception Backtrace block here so I don't know how to pinpoint the error and fix it. Any [...] read more

New audio HAL not working with Nexus player

Android opens my Audio HAL's input stream and then immediately closes it. Please help me figure out what's missing. Background This is in continuation to work on Nexus 7 tablet discussed in a previous question here I was able to successfully load vloop audio hal into Nexus 7 and read [...] read more