I'm now using the exact same config as you (Dockerfile + C# launch settings), and I'm always getting this error. No usable sandbox!. so it would workout with ECS but not with lambda? Already on GitHub? Select not work property in "Windows" (you need use size=2 or the list not show), i would read the platform in If cloudx is not suspended, they can still re-publish their posts from their dashboard. In the case of Chinese, Japanese, Arabic etc websites, install fonts in those languages. I had to set execute permissions after I downloaded. Features Pricing. Steps to reproduce. Thanks for contributing an answer to Stack Overflow! to your account. 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. https://github.com/jontewks/puppeteer-heroku-buildpack. Hi there, The official Node.js image is a suitable starting point that means you dont need to manually install Node. App Engine standard environment 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list', apt-get install -yq gconf-service libasound2 libatk1.0-0 libc6 libcairo2, libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4, libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0, libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1, libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1, libxss1 libxtst6 ca-certificates fonts-liberation libnss3 lsb-release. Can I use my Coinbase address to receive bitcoin? [12:17:23 INF] Starting to initialize puppeteer I have to serve it to the requester over my REST API which prevents me I wrote a program using puppeteer. puppeteer work) to delete the file, which I think may do the trick. Consider configuring a Update your kernel or see https://chromium.googlesource.com/chromium/src/+/main/docs/linux/suid_sandbox_development.md for more information on developing with the SUID sandbox. different configuration to finally achieve success. been getting reports that newest runtimes don't have all dependencies to run Since Chrome 65, this is no longer necessary. I am trying out puppeteer script in docker on macOS, docker run -i --init --cap-add=SYS_ADMIN --rm ghcr.io/puppeteer/puppeteer:latest node -e "$(cat coremakepdf.js)", docker run -i --init --rm ghcr.io/puppeteer/puppeteer:latest node -e "$(cat coremakepdf.js)", non-PDF related script fails with similar error, so actual script does not matter, but running in docker. puppeteer uses Function.prototype.toString() to serialize functions while James Walker is a contributor to How-To Geek DevOps. The bug Starting from v19.0.0, Puppeteer will download browsers into Using the example code from Puppeteer Github page works as expected when running Puppeteer in headless disabled, however, if I try to run it in headless mode I get this error and it crashes. transpilers could be changing the output code in such a way it's incompatible Most upvoted and relevant comments will be first. You will need access to the linux box that Puppeteer is running on . at System.Diagnostics.Process.Start() /dev/shm. the usage instructions are in the Chromium. Puppeteer passes --disable-extensions flag by default and will fail to launch An existing image is used if there's one that matches the environment part of the specification file. i haven't tested it so i don't know for sure! Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site We believe in building a developer-centered company where our experienced teams feel valued and can unleash their potential. between Puppeteer upgrades. What operating system are you seeing the . .travis.yml (v5.5.0) How to force Unity Editor/TestRunner to run at full speed when in background? Find centralized, trusted content and collaborate around the technologies you use most. method in my "PDF converter" utility object (which does all the dirty I use the technique described here instead: https://www.hardkoded.com/blog/puppeteer-sharp-docker#we-are-downloading-chrome, @jamie-tillman thanks for your quick response! Can this be somehow be related to AWS? Is "I didn't think it was serious" usually a good defence against "duty to rescue"? Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? The text was updated successfully, but these errors were encountered: Turns out to be a simple solution. If you encounter problems due to missing Chromium dependencies, consider using supported on Alpine is 100, which corresponds to either: The list of required dependencies might get outdated and depend on what you jest-resolve). Can you please tell me, is it works with Headfull in the container? If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox. If you need to render Chinese, Japanese, or Korean characters you may need to # Puppeteer v13.5.0 works with Chromium 100. By clicking Sign up for GitHub, you agree to our terms of service and Puppeteer is not running inside windows docker container, https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md#running-puppeteer-in-docker, https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md#chrome-headless-fails-due-to-sandbox-issues, Platform / OS version: Windows Container hosted in Windows Server 2016. It works like a charm now - thank you very much for your detailed snippets @jamie-tillman. After running the code and I got into multiple errors of browser not launching caused by using wrong executablePath etc, Below code help in resolving the issue. It is worth paying attention to Chromes resource usage. for reference. Introduction Puppeteer is a Node.js library which provides a high-level API to control Chromium (or Firefox) browsers over the DevTools Protocol.. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. module Puppeteer uses to extract browser downloads into the right place. I'm planning to use a Dispose There are 2 ways to configure a sandbox in Chromium. Locally on my computer it works well. Turns out to be a simple solution. Folder's list view has different sized fonts in different folders. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, puppeteer v19.10.1 in docker fails on macOS [0424/114437.819230:FATAL:zygote_host_impl_linux.cc(127)] No usable sandbox, https://chromium.googlesource.com/chromium/src/+/main/docs/linux/suid_sandbox_development.md, How a top-ranked engineering school reimagined CS curriculum (Ep. You might want to manually install a specific Chrome version in customized environments. James Walker is a contributor to How-To Geek DevOps. Puppeteer offers a Docker image that includes Chromium along with the required Why refined oil is cheaper than cold press oil? This guide helps to use Puppeteer inside a Docker container using the Node.js image.. Well occasionally send you account related emails. Code is : By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. To work around this, try running without the flag: Make sure all the necessary dependencies are installed. How to Check If the Docker Daemon or a Container Is Running, How to Manage an SSH Config File in Windows and Linux, How to View Kubernetes Pod Logs With Kubectl, How to Run GUI Applications in a Docker Container. Asking for help, clarification, or responding to other answers. With you every step of your journey. The image is meant for running the browser in sandbox mode and therefore, at PuppeteerSharp.ChromiumProcess.State.StartingState.StartCoreAsync(ChromiumProcess p) Here's what worked for deploying my csproj file to an Azure Docker Container: @jamie-tillman what options do you use on the C# side. Chromium that Puppeteer downloads. up with the code, for example, configure TypeScript to use latest ecma version Seems the old way gives an error saying that. Can I use my Coinbase address to receive bitcoin? At this point you should be ready to build your image: This is a fairly large build process which could take several minutes on a slower internet connection. Puppeteer-sharp not working on linux docker container, http://www.hardkoded.com/blog/puppeteer-sharp-docker, https://www.hardkoded.com/blog/puppeteer-sharp-docker, https://unix.stackexchange.com/questions/506351/error-during-installation-of-latest-stable-chrome-on-debian, https://stackoverflow.com/a/66982374/2437916, https://www.hardkoded.com/blog/puppeteer-sharp-docker#without-no-sandbox, jlund/docker-chrome-pulseaudio#8 (comment), https://github.com/notifications/unsubscribe-auth/AMRF2TKIYUNM3MLCNFCFUP3UWW45ZANCNFSM4H2RGF3A, https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675, https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub, https://github.com/notifications/unsubscribe-auth/AMRF2TLS5TZEUOQYMYLZBWLUW63KHANCNFSM4H2RGF3A, https://github.com/notifications/unsubscribe-auth/AMRF2TJB4GMDZHCRGQZECGLUXEABTANCNFSM4H2RGF3A, Add support to run Fable.MochaPuppeteerRunner inside a docker container, Does this work with .Net 6 and docker on Linux. You can run ldd chrome | grep not on a Linux machine to check which dependencies are missing. RUN yarn add puppeteer@13.5.0 # Add user so we don't need --no-sandbox. You signed in with another tab or window. These all need to be installed within your Dockerfile. upgrading the resolver (or its parent module such as jest) will work (e.g. Seeing other weird errors when launching Chrome? Please note that puppeteer version is 5.3.1, TL;DR: Make sure node is listening on 0.0.0.0. rev2023.5.1.43405. The same code works as expected both headless and non-headless in another Debian 10 machine. for reference. Puppeteer not working in headless mode with chromium, How a top-ranked engineering school reimagined CS curriculum (Ep. They both are running Puppeteer 1.20.0 the only difference is the Debian machine is running Google-chrome 77 whereas the Raspbian is running Chromium-browser 74. Heres a minimal example of using Puppeteer inside your container: This demonstrates a simple script that launches a headless Chrome instance, navigates to a URL, and captures a screenshot of the page. Instead of launching in headless mode, launch a full version of the browser using headless: false. libXcomposite # Note: this installs the necessary libs to make the browser work with Puppeteer. How can I expose more than 1 port with Docker? Puppeteer version. and if you continue installing chromium as part of npm install, Puppeteer ***> wrote: If you need to build an image based on a different base image, you can use our These container have published ports to allow the incoming connections from outside the container. same performance as 74? whereas if I run the nodejs program without a docker, it works very well. I finally was able to run puppeteer but not on Raspbian buster. To use puppeteer, simply list the module as a dependency in your If we had a video livestream of a clock being sent to Mars, what would we see? Error: Failed to launch the browser process! Let's see if we can get a: Let's take a look at the example provided by Puppeteer and see what we need to change there to make it work. Turn off headless mode - sometimes it's useful to see what the browser is displaying. Add your JavaScript to your container with a COPY instruction. multiple layers of sandboxing. Used npm to run it with node.js. There's also another What differentiates living as mere roommates from living in a marriage-like relationship? dependencies. Unflagging cloudx will restore default visibility to their posts. Is a downhill scooter lighter than a downhill MTB with same performance? Instead, launch the browser has disconnected. From inside of a Docker container, how do I connect to the localhost of the machine? One example is Decktape which is built on top of Puppeteer. Which was the first Sci-Fi story to predict obnoxious "robo calls"? You will need to reinstall puppeteer in order for the configuration to take "Failed to launch the browser process! This can be done by How to enter in a Docker container already running with a new TTY, ps command doesn't work in docker container, Docker - Ubuntu - bash: ping: command not found, Simple deform modifier is deforming my object. I'm working on a post explaining how to use pptr# on Docker. How did find Chromium 72? But I can give a solution here in the meantime :). puppeteer.launch({ args: ['--no-sandbox', '--disable-setuid-sandbox'] });. The image is meant for running the browser in sandbox mode and therefore, running the image requires the SYS_ADMIN capability.. Usage . is there such a thing as "right to be heard"? A Puppeteer Docker image based on Puppeteer's own recommendations. rev2023.5.1.43405. why? Are you sure you want to create this branch? Ubuntu won't accept my choice of password, A boy can regenerate, so demons eat him for years. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. tips specific to WSL. once per host environment: You might want to export the CHROME_DEVEL_SANDBOX env variable by default. Generic Doubly-Linked-Lists C implementation, Generating points along line with specifying the origin of point generation in QGIS. @jamie-tillman thanks for your quick response! Some chrome policies might I don't think there's any harm in that. We used Cirrus Ci to run our tests for Puppeteer in a Docker container until v3.0.x - see our historical Dockerfile.linux (v3.0.1) for reference. privileges. with puppeteer. I'm actually only opening a custom HTML page and rendering as PDF - I don't see where Puppeteer would keep any data there? How are we doing? There are all kinds of extensions available that can help you with this.In this article I'll show how you can run and configure puppeteer inside a docker container, with an extension enabled. He has experience managing complete end-to-end web development workflows, using technologies including Linux, GitLab, Docker, and Kubernetes. Also, I found this here stackoverflow.com/a/66099373, but I didn't test it, and i get this error "Protocol error (Target.setAutoAttach): Target closed.". Do you know if installing the latest Google Chrome could lead to problems if using an older version of Puppeteer? When I run this same docker file I receive the following error: When I try to use the docker file above to build an image, I get, #5 7.862 E: Unable to locate package google-chrome-stable, Works for me using this Dockerfile gist.github.com/navarroaxel/3f4492, I built it with. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. now everything works locally but i can't deploy it to AWS as it exceeds the lambda limit. I'm now using the exact same config as you (Dockerfile + C# launch settings), and I'm always getting this error. I tried to reproduce the environment by using your files and after the curl request, I get this error: My guess would be you're able to talk to the service running inside docker but its some application level issue you need to debug. . Man this costs me some nerves :(. And the output outside Docker (inside Docker the output is blank): Is there anything missing in the Docker definition? I have the same issue currently, and It's probably not a network-related issue, because the fonts are loaded, I can see the correct fonts when I take a screenshot exactly before generating the PDF, but the fonts are not loaded in PDF for some reason. to your account. Well, from what I saw in my first cursory attempts (haven't dug deep yet), I used your Dockerfile content along with mine as i am trying to to generate pdf file for this service that i'm building with typescript. rev2023.5.1.43405. in Docker). Windows 11 Has More Widgets Improvements on the Way, 2023 LifeSavvy Media. comes with all system packages needed to run Headless Chrome. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Please help us improve Stack Overflow. When you click add buildpack, simply paste that url into the input, and click The . Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Where can I find a clear diagram of the SPECK algorithm? Another workaround could be using string templates I usually run a script that will scrape around 200-300 urls 3 times a day and have to limit the number of chromium browser instances running at the same time due to the RPi capacity and cpu temp. @jamie-tillman what do you mean by "automatic cleanup"? Attempting to run Puppeteer, a Node library to control a headless Chromium (in order to do things like create a PDF of a website), in Docker is a surprisingly fiddly thing. If you are using a JavaScript transpiler like babel or TypeScript, calling executable for different Chromium versions, so the following could be done only 8 comments . @mayukhgit Do you mind sharing your Dockerfile for Windows? Updated on Sep 11, 2022. good sandbox for Chrome to use, it will crash with the error Docker starts a new container with mounted local artifacts such as model and code files. The text was updated successfully, but these errors were encountered: You won't be able to run Chrome inside docker. when such policies are active. To fix, you'll need to install the missing dependencies and the latest Chromium Folder's list view has different sized fonts in different folders. Does a password policy with a restriction of repeated characters increase security? For reference I am running an asp.net 6 web api. Have a question about this project? Hopefully either this or some other answers above will help! xorg-x11-fonts-75dpi Puppeteer is commonly used to automate testing, archive webpage data, and generate screenshots of live web content. ***> wrote: this case, add the following to the ~/.bashrc or .zshenv: We ran our tests for Puppeteer on Travis CI until v6.0.0 (when we've The Puppeteer - Docker integration falls outside of the scope of the project, so I'll close this. You must also set Chrome launch arguments so the browser operates correctly in your Dockerized environment. Connect and share knowledge within a single location that is structured and easy to search. running the image requires the SYS_ADMIN capability. You can try running Puppeteer on In result, my dockerfile or environment is not setup correctly. Did you check the link I provided earlier? docker run --cap-add=SYS_ADMIN when developing locally. Let me know how it goes if you go that way. Looks like it the ENV variable is not correctly set. This is where the rest of the files and commands in the Dockerfile will be executed; COPY package.json ./: This copies the package.json file to the working directory Short story about swapping bodies as a job; the person who hires the main character misuses his body. cannot launch Chromium due to unavailablity of libatk-1.0.so.0 and many more User namespace cloning is only supported by modern kernels. I'm so stuck! Pulls 10M+. For anyone else coming here on an M1 Mac (Apple Silicon), the above Dockerfile solution will not work because Google Chrome is not compiled to arm64 yet. For this, we use the -p option. Connect and share knowledge within a single location that is structured and easy to search. the installation directory. system packages needed to run Headless Chrome. EPEL (Extra Packages for Enterprise Linux): Now Puppeteer can launch Chromium to run your tests. While there's not much info on how to work with these (e.g. I am not sure why it won't render when I attempt getting a PDF, but works for screenshot. Otherwise, youll run into permission errors whenever Puppeteer tries to start Chrome. @erickpeniche: Can you supply terminal console to install puppeteer-core, chromium-browser and sample code? If we use the Docker images for Node.js v14 LTS Gallium, when installing the chromium package from apt, it will be v90.0, which can have compatibility issues with . Tell us about your environment: Puppeteer version: puppeteer@0.10.2; Platform / OS version: Linux c1301da96bb5 4.9.49-moby running in a . I was able to gather enough understanding to build a dockerfile segment that seems to work from Visual Studio's local dotnet6 container: Important to note that that according to this page the recipe clause must be placed in the first dockerfile segment (which is what I copied here), not the build or deploy ones, or it won't be properly set up. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Installing required dependencies manually: Lastly, if youre using Puppeteer through Jest, then you may encounter an I updated the Dockerfile to use Chromium instead, like so: I did use the --no-sandbox option, but I found information on how to get it How to get a Docker container's IP address from the host, Docker: Copying files from Docker container to host. Templates let you quickly answer FAQs or store snippets for re-use. So you would probably have better luck running an older version of puppeteer that is built for chromium 74. And pass the following options in puppeteer. As its ordinarily a heavyweight GUI program, Chrome depends on font, graphics, configuration, and window management libraries. at PuppeteerSharp.Launcher.LaunchAsync(LaunchOptions options) You should find Puppeteer executes successfully, provided proper Chrome flags are used. I added this line in my dockerfile and it fixed the problem for me: apt-get install -y wget unzip fontconfig locales gconf-service libasound2 libatk1.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget, reference: How to avoid this? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. pyppeteer strives to replicate the puppeteer API as close as possible, however, fundamental differences between Javascript and Python make this difficult to do precisely. There's some expertise on running chromium in docker. Now, once the server is listening on all interfaces, you need to assign a port on the host machine to listen for requests and forward it to the container's port where the server is listening. This presents challenges for running headless Sign up for a free GitHub account to open an issue and contact its maintainers and the community. can be done by passing it as an argument to your .launch() call: puppeteer-core. In order to protect the host environment from untrusted web content, Chrome uses Is it safe to publish research papers in cooperation with Russian academics? ', referring to the nuclear power plant in Ignalina, mean? What Is a PEM File and How Do You Use It? dumb-init is worth checking out if you're instead of functions: A tag already exists with the provided branch name. I'm working on a post explaining how to use pptr# on Docker. the image requires the SYS_ADMIN capability since the browser runs in sandbox Resources. The next block of commands installs Google Chrome Stable and the necessary fonts to make it work with Puppeteer; WORKDIR /usr/src/app: Sets the working directory for the Docker image. I tried a number of different user configurations to get around the need to use the no-sandbox option and all of them failed using the .Net 6 images. at Interop.Sys.ForkAndExecProcess(String filename, String[] argv, String[] envp, String cwd, Boolean redirectStdin, Boolean redirectStdout, Boolean redirectStderr, Boolean setUser, UInt32 userId, UInt32 groupId, Int32& lpChildPid, Int32& stdinFd, Int32& stdoutFd, Int32& stderrFd, Boolean shouldThrow) The C# part isn't clear to me either (as @runxc1 said), would you mind sharing that as well? This # 1. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Yep, puppeteer is tested with a specific version of Chromium, details here: pptr.dev/chromium-support. . I added this line in my dockerfile and it fixed the problem for me: We're a place where coders share, stay up-to-date and grow their careers. I'm struggling to get PuppeteerSharp running on my AWS Beanstalk instance running Docker. See this thread with some Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? GitHub Container Registry. Google Cloud Functions but we have But, Puppeteer`s recipe is already downloading Chrome on that image so we can use that Chrome build by setting an environment variable. What were the poems other than those by Donne in the Melford Hall manuscript? 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Note There's special Log.Information("Starting to initialize puppeteer"); The text was updated successfully, but these errors were encountered: I've worked around this issue by running a browserless chrome docker container, which wasn't all to hard to get up and running. on deploy, add the Puppeteer Heroku buildpack to the list of buildpacks for your packages. Soooorry!!! Why did US v. Assange skip the court of appeal? ("target": "es2018"). already have installed. ***> wrote: -- comes as part of I'll try to dig a little bit into it. Therefore, this Dockerfile is compatible with Node.js v14, v16, or any new one. https://timleland.com/headless-chrome-on-heroku/. I develop apps and websites across various verticals. Rocker 4ever! libXdamage Now run npm install puppeteer in your local working directory. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Thanks for that! Whats the Difference Between a DOS and DDoS Attack? Why did DOS-based Windows require HIMEM.SYS to boot? If you are in an ARM-based CPU like Apple M1, you should use the --platform argument when you build the Docker image. Once suspended, cloudx will not be able to comment or publish posts until their suspension is removed. code of conduct because it is harassing, offensive or spammy. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Hey thanks for your response @jamie-tillman. To fix, @pi-2r Are you able to get the correct response if you exec into the container and then issue a curl request? But, I can use Puppeteer to get a screenshot of that same page and the panorama looks great. The important section is the arguments list thats passed to Chromium as part of the launch() call: Add your JavaScript to your container with a COPY instruction. I just gave up on it as I didn't strictly need it. If you absolutely trust the content you open in Chrome, you can launch Have a question about this project? The same goes for all the adverts you might one to block and not handle individually. With this recipe, we don't need to user BrowserFetcher on the App. I was facing the same issue and fixed this by following modifications, And pass the following options in puppeteer. After that was done, in my project directory, I ran npm i puppeteer-core.After that, I included puppeteer-core in my app.js and I ran which chromium-browser to find the location of the browser itself. Thanks for the feedback. A. Removes the apt-key deprecation warning. I just noticed you said you're using the same Dockerfile as me. libXScrnSaver The Node.js runtime of the App Engine standard environment comes with all system packages needed to run Headless Chrome. Thanks for contributing an answer to Stack Overflow! Connect and share knowledge within a single location that is structured and easy to search. You signed in with another tab or window. for Chrome and will cause Chrome to crash when rendering large pages. Thank you all for your updates. This is a quote I found: how do I re-setup for working puppeteer on docker?? Highlight a Row Using Conditional Formatting, Hide or Password Protect a Folder in Windows, Access Your Router If You Forget the Password, Access Your Linux Partitions From Windows, How to Connect to Localhost Within a Docker Container, How to Run Your Own DNS Server on Your Local Network. 2. Making statements based on opinion; back them up with references or personal experience. The resources required to wake up a container are much more than just running and interpreting some code, so you could end up paying more just for resources that doesn't necessarily translate to performance. Where can I find a clear diagram of the SPECK algorithm? kernel attack surface for (unsandboxed) non-root processes to elevate to kernel Why is it shorter than a normal address?