Jacob Sorber | Can I write to NULL (0x0000000000) without seg faulting? @JacobSorber | Uploaded 2 years ago | Updated 3 hours ago
Patreon https://www.patreon.com/jacobsorber
Courses https://jacobsorber.thinkific.com
Website https://www.jacobsorber.com
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Can I write to NULL (0x0000000000) without seg faulting? // Inspired by a student question. I think I know the answer, but I've never tried. So, let's see if I can convince the operating system (kernel) to map page #0 into my address space and allow me to access it like I would any other page.
Related Videos:
mmap-basics: https://youtu.be/XV5sRaSVtXQ
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Welcome! I post videos that help you learn to program and become a more confident software developer. I cover beginner-to-advanced systems topics ranging from network programming, threads, processes, operating systems, embedded systems and others. My goal is to help you get under-the-hood and better understand how computers work and how you can use them to become stronger students and more capable professional developers.
About me: I'm a computer scientist, electrical engineer, researcher, and teacher. I specialize in embedded systems, mobile computing, sensor networks, and the Internet of Things. I teach systems and networking courses at Clemson University, where I also lead the PERSIST research lab.
More about me and what I do:
https://www.jacobsorber.com
https://people.cs.clemson.edu/~jsorber/
http://persist.cs.clemson.edu/
To Support the Channel:
+ like, subscribe, spread the word
+ contribute via Patreon --- [https://www.patreon.com/jacobsorber]
Source code is also available to Patreon supporters. --- [https://jsorber-youtube-source.herokuapp.com/]
Patreon https://www.patreon.com/jacobsorber
Courses https://jacobsorber.thinkific.com
Website https://www.jacobsorber.com
---
Can I write to NULL (0x0000000000) without seg faulting? // Inspired by a student question. I think I know the answer, but I've never tried. So, let's see if I can convince the operating system (kernel) to map page #0 into my address space and allow me to access it like I would any other page.
Related Videos:
mmap-basics: https://youtu.be/XV5sRaSVtXQ
***
Welcome! I post videos that help you learn to program and become a more confident software developer. I cover beginner-to-advanced systems topics ranging from network programming, threads, processes, operating systems, embedded systems and others. My goal is to help you get under-the-hood and better understand how computers work and how you can use them to become stronger students and more capable professional developers.
About me: I'm a computer scientist, electrical engineer, researcher, and teacher. I specialize in embedded systems, mobile computing, sensor networks, and the Internet of Things. I teach systems and networking courses at Clemson University, where I also lead the PERSIST research lab.
More about me and what I do:
https://www.jacobsorber.com
https://people.cs.clemson.edu/~jsorber/
http://persist.cs.clemson.edu/
To Support the Channel:
+ like, subscribe, spread the word
+ contribute via Patreon --- [https://www.patreon.com/jacobsorber]
Source code is also available to Patreon supporters. --- [https://jsorber-youtube-source.herokuapp.com/]
