Windows error 0x00000033, 51

Why do I get the Debug exception reason: Stack canary watchpoint triggered (main)?

I'm writing a program for esp32-wroom-32 using esp-idf-v3.0. I'm trying to add logs, which will be saved in fatfs. After some logs I get: 21:54:21.306 -> Debug exception reason: Stack canary watchpoint triggered (main) 21:54:21.306 -> Register dump: 21:54:21.306 -> PC : 0x40089827 PS : 0x00060b36 A0 : 0x40082179 A1 [...] read more

What does "Current message level: 0x00000033 (51)" mean?

There is a similar question here What is the "Current message level"? Reference linked in the answer there doesn't mention this 0x00000033 (51) value. Here is the complete output of ethtool: Settings for enp5s0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported [...] read more

Many dropped packets on NIC

I've noticed a very large count of dropped packets in the NICs of some of my servers. Have you seen something like this before? Any idea on what can be the problem? Below there's some information that could be relevant to diagnose this issue. -------------------------------------------------------------------------------- ifconfig eth0 eth0 Link encap:Ethernet [...] read more

Unity3D Firebase Access Violation

I use FirebaseAuth.unitypackage and FirebaseDatabase.unitypackage packages in my project. When I want to test SignInWithCredentialAsync and SetRawJsonValueAsync operations in the editor, the editor crashes. When I checked the error.log, it says: FirebaseCppApp-5.0.0.dll caused an Access Violation (0xc0000005) in module FirebaseCppApp-5.0.0.dll at 0033:b7cf5c00. Full error.log: Unity Editor [version: Unity 5.6.3f1_d3101c3b8468] FirebaseCppApp-5.0.0.dll [...] read more

Getting BPF programs working with USDT probes (Dtrace) in Linux

So I'm following this link to attach a BPF program to user space probes, Dtrace format (see section User Statically Defined Tracepoints). C program: #include <sys/sdt.h> int main() { DTRACE_PROBE("hello-usdt", "probe-main"); } The checks to ensure the probe info is included: readelf -n hello_usdt stapsdt 0x00000033 NT_STAPSDT (SystemTap probe descriptors) [...] read more

Calling DeviceIoControl from C# with IOCTL_DVD_* Control Codes

I am trying to call DeviceIoControl from C# for IOCTL_DVD_* control codes. Having read a lot of information and trying a number of examples I have not made much progress. What I am trying to eventually do is get a DVD_LAYER_DESCRIPTOR structure about the media currently in the DVD drive. [...] read more

Change display format of DirectX "Object Table"

While debugging with VS 2012 Graphic's Debugger, I want to look at an index buffer, but the format that is showing it in is as float. This means the numbers are different than they would be with an int or short format. Does somebody know how to change this? Here [...] read more

Network Speed on Linux NAS underperforming, how to debug (it's not the cables)

before posting this I read many threads/pages/blogs about networks speeds underperforming the specs. So I bought new CAT6 UTP cables and tested between every device on my network. I now get consistent speeds at around 110mb/s between all devices except my self-build linux NAS. It consistently copies files only at [...] read more

How to enable ethernet 1 Gigabit advertising or troubleshoot the situation?

On an Debian Stretch box, I have a Gigabit ethernet network adapter, but this mode is not active (however displayed as supported). Does this depend on the peripheral condition (i.e. cable is not good enough, another one box has an older i.e. only 100 Mbit network controller - or can [...] read more

Realtek RTL8111/8168/8411 ethernet card randomly disconnecting

System information: * kernel: latest OPENVZ kernel (2.6.32-042stab140.4) * centos version: CentOS release 6.10 (Final) * network card type: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) Problem: We have a strange problem with our server. Network is disconnected every now and then, randomly. [...] read more

fnstenv on 64 bit returning wrong value?

I'm using fnstenv FPU instruction to get the EIP in a 64 bit shellcode. Running it in GDB everything looks fine: 0x0000000000400080 ? fldz 0x0000000000400082 ? fnstenv [rsp-0xc] After running these instructions by stepping in with si I get in the stack the right value (0x0000000000400082). What I miss is [...] read more

Unity Player caused an Access Violation (0xc0000005)

I have a Unity Build (player) which is working fine on my PC but producing error(crash) on my client PC. The client has shared the log (Crash log) which is related to access Violation. > Unity Player [version: Unity 5.6.2f1_a2913c821e27] VB_Player_005.exe caused an Access Violation (0xc0000005) in module VB_Player_005.exe at [...] read more

How can i understand panic plist in iPhone 4s?

-------------------------------------------------------------------------------- I have problem - my iPhone 4S (ECID 387220092299 SN DNPH9H44DTD1 software ver 10A523) every time reboot. It can lay shuted down for some hours and i can turn it on only by holding home and lock buttons same time. i have installed xcode 4.5 on my Mac and [...] read more

Poor network throughput, but double under high cpu load

I'm trying to understand a counter-intuitive phenomenon where I get only ~ 400 Mbit/s through a gigabit connection when the CPU is idle, but ~ 850 Mbit/s when the CPU is under full load (stress test utility). I suspect this is a symptom of some misconfiguration, in the end I [...] read more

Internet Connection frequently dropping on Ethernet

My internet connection is frequently dropping on Wired Lan (Ethernet) but the wireless works fine without any problem. It's not an issue of Internet Speed as Internet works fine in Windows. ifconfig output $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 44:1e:a1:db:95:d9 inet addr:192.168.28.127 Bcast:192.168.31.255 Mask:255.255.252.0 UP BROADCAST RUNNING MULTICAST MTU:1500 [...] read more

Linux Box Internet Speed

I have encountered a weird problem with my Centos6 Server, currently I have install Centos6.4 on a 64bit support CPU with 8GB of RAM and 500GB HDD. Just went to check on the internet this morning and I noticed a significant drop of the internet speed, when I double check [...] read more

DHCP not working on RTL8111 NIC (DHCP Offer not arriving at receiver)

I'm experiencing some strange behaviour with a Dual Gigabit Ethernet NIC; I've setup a computer which has multiple network interfaces to connect some industrial cameras and setup a DHCP Server (isc-dhcp-server, Ubuntu 16.04) to statically assign their IPs. Note: There is no router/switch in the setup. Just NICs and direct [...] read more

Why does my Realtek gigabit NIC not advertise 1000Mbit mode?

I currently have a NAS (openmediavault based on debian) with a Realtek gigabit NIC (ASRock Q1900-ITX on-board LAN), but it won't advertise that it is gigabit-capable. ethtool eth0 gives the following output: Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full [...] read more

Switch not connecting to all computers

I need help configuring a switch (Datacom DM4000). It has 2 ports, one for management and one for console (obviously more 24 ports for normal use). With a RJ-45 to serial cable I was able to configure the IP from the management port and with a normal RJ-45 cable I [...] read more

Subversion on 1 Gb uplink

is it possible at all to utilize 1 Gb uplink? I have 2 server with 1 Gb uplink 176.9.xxx.xxx - server # uname -a Linux svn.example.net 2.6.32-5-amd64 #1 SMP Mon Sep 23 22:14:43 UTC 2013 x86_64 GNU/Linux # cat /etc/debian_version 6.0.8 # svnadmin --version svnadmin, version 1.6.23 (r1485506) compiled May [...] read more

changing network speed to 1000Mb/s

I am trying to change the server uplink from 100Mb/s to 1000Mb/s ethtool eth0 output # ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised auto-negotiation: [...] read more

Very high packet loss in burst

We sometimes have 90%+ more packet loss on our server, but it does not always appends. Right now it works perfectly, but just half an hour ago, it had just that problem. Our service provider is telling us to go in a recovery system to test if this is really [...] read more

sqrtf() throws a domain error, even though I guard against negative numbers

I am normalizing a 3D vector, and the clang-9 generated code throws a SIGFPE on the sqrtf() even though I do a test before calling it. Note that I run with FP exceptions enabled. const float lensq = dx*dx + dy*dy + dz*dz; float invlen = 1.0f; if (lensq > [...] read more

Domino 10 Java XPage crashing the server after some time with PANIC: semaphore invalid or not allocated

I have a java XPages domino application that's running on my server and serves as an API for handling the Rooms & Resoruces database remotely (the main role is obtaining reservations for a set of rooms and updating it periodically). Everything was fine when testing, but once I put the [...] read more

d3d11.dll caused an Access Violation

So recently i downgraded to windows 7 from 10 for better performance. the game i wanted to play (clone hero) worked perfect on windows 10. after downgrading i got these "Access Violation" errors.. i tried disabling firewall and its a fresh install of windows 7. i only have chrome and [...] read more

LotusScript call to NSFItemInfoNext on Domino 64 bit server crashes server

I'm trying to make a call from a LotusScript agent to 'NSFItemInfoNext' on a Domino 9.0.1 64-bit server. The call to 'NSFItemInfo' succeeds. The code has been tested on a 32-bit and works correctly. The field is a rich text field broken into several items. Type BLOCKID64 Pool As Long [...] read more

Ethernet cable unplugged only when restarting from Ubuntu 20.04 LTS to Windows 10

I have a desktop computer with the good old Asus Sabertooth x58 motherboard. My setup is a dual boot with Ubuntu 20.04 LTS and Windows 10. Since some month ago, I noticed that my ethernet works fine, except when I decide to restart from Ubuntu and choose Windows. In that [...] read more

Why do my P.L.Cs (Power line converters) devide the speed by two?

If I directly connect to my 100MB router with a CAT.5e cable, I get these results : $ speedtest --simple Ping: 8.617 ms Download: 92.54 Mbit/s Upload: 93.90 Mbit/s $ ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supported pause [...] read more

LAN bandwidth in Linux is low

everyone, I connect two PCs both with 1000Mbps NIC. One(A) of them runs Fedora 8 while another(B) runs Windows7. I test bandwidth between them with Ixchariot, it shows about 10Mbps. If A and B both run Windows7, I run Ixchariot again and it shows about 1000Mbps. I transmit file from [...] read more

What is a better way to turn a user-inputted hexadecimal string into a binary in MIPS?

I'm taking a computer architecture class, and they're having us use MIPS assembly. Our current assignment is asking us to take a user-inputted hex string, and turn it into a binary one. The code I've written "works", but it's horrible, to say the least. What would be a better approach [...] read more

Arithmetic operation of Fixed point with Std_logic_vector in VHDL

I am writing a code in VHDL for arithmetic operations with the signals. I declared signals as follows: signal x : std_logic_vector (7 downto 0); signal y: std_logic_vector (7 downto 0); signal z: std_logic_vector ( 7 downto 0); z<= x-y ; In Detail: library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; USE [...] read more

When I open a scene my Unity crashes. How do I fix this?

Error logs. Unity is not running. > Unity.exe caused an Access Violation (0xc0000005) in module Unity.exe at > 0033:41ac1fd9. Full log: Unity Editor [version: Unity 2017.2.3p1_b4bae9093154] Unity.exe caused an Access Violation (0xc0000005) in module Unity.exe at 0033:41ac1fd9. Error occurred at 2018-06-12_191314. C:\Program Files\Unity\Editor\Unity.exe, run by Hemal Dedhia. 23% memory in [...] read more

Empty Unity project generates "Access Violation (0xc0000005)" error

I have been working on a game for the past few months. In the editor everything is fine. When I built the game, everything was still fine, but when I launched the build, I got an "Access Violation (0xc0000005)" error. After looking on forums, I found that while this error [...] read more

Reading BPF Assembly

I'm trying to read some BPF syntax for a filter to try and figure out what it does. One thing I cannot find is where the "byte offset starts". Meaning, that if we have the following assembler code: 0000: 0x28 0x00 0x00 0x00000004 ldh $data[4] 0001: 0x15 0x00 0x61 0x00000028 [...] read more

Ctypes access violation error

I'a trying to port an old rfid library implemented in oldest VB to a python script. here's the vb code: dim hport as integer dim hreader as integer hport=FECOM_OpenPort("1") if hport>0 then FECOM_SetPortPara(hport,"Baud","38400") FECOM_SetPortPara(hport,"Frame","8E1") hreader =FEISC_NewReader(hport) and so on I am not absolute new to the ctypes thing, ok I [...] read more

SIGSEGV in 'free' function of libpthread, but backtrace does not list any of my files/funcs

I have an OpenCL program that uses only one device (GPU in this case) and I am using 3 pthreads to manage the program (plus the main thread). Sometimes I get a SIGSEGV, but I have no clue why it happens. Thread 13 "my_program" received signal SIGSEGV, Segmentation fault. [Thread [...] read more

Access Violation Unity DLL Plugin Pocketsphinx

Problem: Unity crashes when loading a native plugin. Goal: Use Pocketsphinx in Unity - Windows. The libpocketsphinxwrap.dll is the interface for pocketsphinx.dll and sphinxbase.dll. So far: I compiled both Sphinxbase and Pocketsphinx projects flawlessly. Then I created a project called libpocketsphinxwrap in Visual Studio which on LINKING, looks for sphinxbase.lib, [...] read more

Tiva C cannot change value of MDR register

i have a tiva c micro controller the tm4c123gxl and i have been trying for a while now to use the I2C module on the board with a digital accelrometer with no result , i have been trying to set the MDR register with a certain value to send but [...] read more

Ruby on rails segmentation error

When I was trying to run the rails application following segmentation error has occurred: > => Booting Thin > => Rails 4.2.6 application starting in development on http://localhost:4000 > => Run `rails server -h` for more startup options > => Ctrl-C to shutdown server > Thin web server (v1.7.0 codename [...] read more

Windows Phone App crashes after Launcher.LaunchFileAsync when downloaded from store

I have a strange problem, if I deploy my app through visual studio as debug or release version all is working well. But if I publish it to the store and download it from there the app crashes after Launcher.LaunchFileAsync or FileOpenPicker. When my app launches for example the default [...] read more

Deny USB arrival

I am working on USB Monitor in C# and I wanted to be able to react after the system driver processed arrival and enabled the arriving device, but faster than application level processes (Explorer). I wanted to examine device for autorun.inf and if found to DENY the arrival. I used [...] read more

Deadlocked when allocating an std::string

I have an application with several threads running. I have 2 threads that seem deadlocked when trying to allocate an std::string. Inspecting the backtrace of both threads suggest that at some point one has tried to allocate an std::string, and got a bad_alloc exception. In its catch block, another string [...] read more