-
-
I am Dave Jing Tian, an Assistant Professor in the Department of Computer Science at Purdue University working on system security. My research involves embedded systems, operating systems, trusted and confidential computing, and hardware security and trust. All opinions are my own.
Shoot me:
root@davejingtian.org Categories
Resource
Tags
- ABNF
- agile
- AI/ML
- Alcatel-Lucent
- android
- arp
- asn1c
- assembly
- bash
- ber
- bison
- BNF
- build
- C
- CentOS
- CIS122
- Coverity
- crypto
- csv
- cuda
- DCA
- ddclient
- debugfs
- DH
- Diffie-Hellman
- drd
- drig
- elixir
- fedora
- fedup
- flex
- fsck
- gcc
- gdb
- GFW
- git
- github
- gnome
- gprof
- gpu
- guitar
- gumstix
- helgrind
- intel
- itevad
- Java
- jmgsim
- JVM
- kenai
- kernel
- kill
- ksh
- kvm
- ld
- Linux
- list
- netbeans
- netlink
- nvidia
- OS
- overo
- Python
- relay
- security
- selinux
- sgx
- socket
- ssh
- Ubuntu
- UO
- USB
- valgrind
- x86
- x86_64
- yocto
Blog Stats
- 232,921 hits
-
All blogs on this website are licensed under a Creative Commons Attribution 4.0 International License. -
-
-
Category Archives: OS
Ubuntu Kernel Build Again
I wrote two blog posts about Linux kernel build on Ubuntu [1,2]. There is also an official wiki page talking about the same thing [3]. Still, things are broken when I try to create a homework assignment for my class. … Continue reading
Syscall hijacking in 2019
Whether you need to implement a kernel rootkit or inspect syscalls for intrusion detection, in a lot of cases, you might need to hijack syscall in a kernel module. This post summorizes detailed procedures and provides a working example for … Continue reading
Kernel Code Execution Time Measurement (kcetm)
This post mainly talks about the correct usage of tsc counters provided by Intel x86/x86-64 architectures to measure the Linux kernel code execution time. Most of the content here is borrowed/inspired from [1]. Note that this is NOT a post … Continue reading
Rowhammer Pine64
Rowhammer attacks have been well known, and gotten a lot of publications already. However, we notice that most rowhammers happened on x86 architecture due to the easy access to clflush from the user space. ARM architecture (both ARMv7 and ARMv8) … Continue reading
Posted in Linux Distro, OS, Security
Tagged ARMv8, cache, clflush, fedora, pine64, rowhammer
Leave a comment
Running Multics on Linux (Fedora 27)
This post follows the “Multics Simulator Instructions”[1] (with some tweaks) to setup Multics simulator dps8m and run Multics on my Fedora 27. Other Linux distro (Ubuntu/Debian/Raspbian) may need some changes but basically work the same way. Experience the cutting-edge secure … Continue reading
USB gadget functionalities in Android
I started working on Android stuffs this summer. While I mainly work on the USB layer within the Linux kernel, I do sometimes need to look into the Android framework, to see if I could achieve my goal from the … Continue reading
Understanding kcov – play with -fsanitize-coverage=trace-pc from the user space
kcov is a kernel feature used to support syzkaller[1]. To provide the code coverage information from the kernel itself, the GCC compiler was patched to instrument the kernel image[2]. The kernel itself was also patched to enable this feature where … Continue reading
getdelays – get delay accounting information from the kernel
Top may be the most common tool in use whenever a preformance issue is hit. It is simple, quick and dumb. Besides the heavy metal stuffs like perf and gprof, another really useful and simple tool is getdelays, which provides … Continue reading
Posted in OS, Programming
Tagged getdelays, kernel, Linux, netlink, Performance, taskstats
Leave a comment
Making USB Great Again with USBFILTER – a USB layer firewall in the Linux kernel
Our paper “Making USB Great Again with USBFILTER” has been accepted by USENIX Security’16. This post provides a summary of usbfilter. For details, please read the damn paper or download the presentation video/slides from USENIX website. I will head to … Continue reading
davejingtian.org 