Kernel ROP crashes running OS

I was experimenting to see if I can make an ROP chain within the kernel. In the kernel debugging mode, I can make the first jump to an arbitrary gadget address without any problem. But the problem occurs after that. If I want to continue the kernel by typing continue, Kernel freeze. OS did not respond, I have to restart my VM to get back to the working state again.

Now my understanding is, As I jump or return to a random address (gadget) in the kernel, my stack contains doesn’t change as a normal function call would do. Therefore, when I execute the gadget instructions one by one or continue to run the kernel if the instructions needed some value from the stack which is not present there, as a result, kernel crash.

So, My question is, how can I jump/return to multiple gadgets and after running all the gadgets continue to run the kernel without crashing it. I guess there is no easy and straight forward answer for it. But if someone can give some basic idea about where to start that would be very helpful. Thank you in advance.

Recursive Coroutine crashes unity

I want the bounds (left wall and right wall) to follow the player’s y position, a couple of times. however when I use this code as soon as it runs unity crashes. any idea why?

public Transform bounds;  //in another function StartCoroutine(Follow_Bounds(0));  IEnumerator Follow_Bounds(int a) {     yield return new WaitForSeconds(1f);     while(a < 3)     {         StartCoroutine(Follow_Bounds(a + 1));     }    bounds.position = new Vector2(bounds.position.x, transform.position.y); } 

Sharepoint Designer 2013 crashes when I publish a workflow with a approval process action

From a few days I can no longer publish with the SharePoint Designer old and new Workflows that contain a simple approval process Action, like this

->    Start Approval (7) process on Current Item with Alessandro Cosi 

I am now receiving this error when attempting to publish:

An error occurred while trying to fetch data from your Sharepoint site.

18.04 crashes when coming back to GUI

I’ve read the article Switch to Console in Ubuntu 18.04 – How to Leave GUI? and this question.

I need to be able, while logged-in in the GUI, to go to tty and come back to GUI.

Here is what I do:

  1. I am in the GUI logged-in
  2. I press CTRL + ALT + F3 and I get the tty. I log in to this tty.
  3. Then I press CTRL + ALT + F1 and i get the GUI login screen. I put my password, I click “unlock” and it crashes. Nothing moves. Frozen screen.

I’ve also tried to go back to the gui with ALT + F2instead than CTRL + ALT + F2 – in this case it freeses in the tty.

Only hard reset can bring me to normality after reboot.

Please help me to resolve and in case of need to troubleshoot it. I don’t have idea where to find the logs if needed.

Thanks

gnome-shell freezes and then after a minute crashes

I have been having a lot of issues with Ubuntu such as hangs, crashes, refuses to load my account etc. I have eliminated hardware being the issue as I have checked all my hardware. Some of these issues were fixed by trying different combinations of kernel versions and bios versions. But I still have some gnome-shell crashes that I can’t fix. Checking my logs reveals a lot of error messages I don’t know how many of them or normal. I will attach 2 logs one from gnome-logs google drive to log 1 with only important events showed and another google drive to log 2from journal showing all that plus warnings

I have already said I eliminated hardware being the issue but I am including my specs here

CPU: AMD Ryzen 2700x

Motherboard: Gigabyte Arous GAMING x470

Bios V.: F42A

RAM: XPG Z1 DDR4 3000MHz (PC4 24000) 16GB (2x8GB) Gaming Memory Modules, Silver (AX4U300038G16-DSZ1)

Video Card: Gigabyte GeForce GTX 1080 Windforce OC GV-N1080WF3OC-8GD Graphics Cards)

Power Supply: Corsair TXM Gold 550 W 80+ Gold Certified Semi-modular ATX

DRIVES: M.2 drives 1 Samsung EVO 970(Linux) && 1 Samsung EVO 960 (Windows)
1 SEAGATE 2TB SSHD(games and user files) 1TB SEAGATE Drive HDD (Backups)

Ubuntu Studio 19.04 – ubuntustudio-controls crashes

This is a fairly vanilla install on an Acer Aspire E 15 about 4 years old. I’ve only installed the updates and vlc.

I have yet to plug in the usb audio interface for the first time. /proc/asound/card2 exists but is empty. Why are there 3 sound cards anyway? I would expect 1 for the hdmi interface and one for the on board audio.

How else can I toggle cpu performance settings?

Thanks in advance, error message below.

Traceback (most recent call last):   File "/usr/bin/ubuntustudio-controls", line 597, in <module>     us = UbuntuStudioControls()   File "/usr/bin/ubuntustudio-controls", line 274, in __init__     with open("/proc/asound/card"+str(x)+"/id", "r") as card_file: FileNotFoundError: [Errno 2] No such file or directory: '/proc/asound/card2/id' 

Ubuntu Random Crashes

I’ve been experiencing random crashes constantly since I’ve switched to Ubuntu.

I first start on Ubuntu 19 but thought I’d have less on 18 but it is still occurring, albeit less frequently.

I’m normally just using chrome but sometimes I’m doing web development and running a development server with chrome open.

I’m including the syslog, any help would be appreciated! Let me know if there’s anything else I can provide.

System: Huawei Matebook D Ryzen

Syslog: https://drive.google.com/file/d/1QdR…ew?usp=sharing

Ubuntu 18.04 google chrome crashes when gnome shell extensions are loaded

I wanted to use the current version of chrome. But it seems that unless I disable all my gnome shell extensions first it’s not going to happen.

I also tried based on previous questions disabling the sandbox and gpu with no effect. Ouput here:

Also tried deleting the google-chrome directory in ~/.config/

[I]  ~/downloads  google-chrome --no-sandbox --disable-gpu [I]  ~/downloads  google-chrome [25111:25111:0925/181842.865622:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [25111:25111:0925/181843.063204:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [I]  ~/downloads  google-chrome [26005:26005:0925/182004.342502:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [26005:26005:0925/182004.532653:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command ^C⏎                                                                                                                                                           [I]  ~/downloads  google-chrome [27395:27395:0925/182113.790411:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [27395:27395:0925/182113.950042:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [27304:27463:0925/182216.357162:FATAL:bus.cc(1215)] D-Bus connection was disconnected. Aborting. fish: “google-chrome” terminated by signal SIGTRAP (Trace or breakpoint trap) [I]  ✘  ~/downloads  google-chrome [4750:4750:0925/182437.014522:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [4750:4750:0925/182437.167120:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command  ^C⏎                                                                                                                                                           [I]  ~/downloads  google-chrome [7102:7102:0925/182637.328197:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [7102:7102:0925/182637.526328:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [7102:7102:0925/182714.072002:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [I]  ~/downloads  [7977:7977:0925/182751.089945:ERROR:sandbox_linux.cc(369)] InitializeSandbox() called with multiple threads in process gpu-process. [7977:7977:0925/182751.423313:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [7977:7977:0925/182810.783713:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command [7977:7977:0925/182818.426713:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command 

Adjusting the margin/position of a nav’s search bar crashes my browser

I’m working on a SharePoint site and every site that’s within the collection displays the same navigation menu. You can make edits to the nav menu that’s displayed on a particular page, but edits made to the nav menu’s code are inherited by all of the sites in a collection.

I’m having an issue with how my site’s nav menu’s search bar is displayed. I formatted the width of the search bar properly, however, when I adjust the margin or position of the bar my browsers (IE and Chrome) crash. Making the adjustments in dev tools beforehand shows the adjusted margins/position as expected (no crashes).

So my question is: Does this sound like a SP problem or is the problem buried somewhere deep within my code’s CSS (or elsewhere)? Editing the SP site version of the nav menu’s a bit dodgy, but it doesn’t affect any of the other versions of the other sites (unless I edit the code of the nav menu itself—in their respective code files).

Code sample:

#navmenu > li > a > img {     margin-top: 0.75rem !important; } header div.searchBox > input { /* this is fine */     width: 18rem; } header div.searchBox { /* this crashes my browsers */     margin-top: 2rem; }