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53196ce262
syz-manager used to silently transitively disable syscalls for which input resources can't be created. This caused lots of confusion, or worse, users did not notice that syzkaller does not actually test what they want. Fail loudly with a readable explanation when a syscall explicitly enabled in enable_syscalls is actually disabled. Note: this requires to slightly change enable/disable_syscalls matching logic. Previously "foo" would match "foo" and all "foo$BAR", now it matches only "foo". But "foo*" can be used to match all disciminations.
syzkaller - kernel fuzzer
syzkaller is an unsupervised coverage-guided kernel fuzzer. Linux kernel fuzzing has the most support, akaros, freebsd, fuchsia, netbsd and windows are supported to varying degrees.
The project mailing list is syzkaller@googlegroups.com. You can subscribe to it with a google account or by sending an email to syzkaller+subscribe@googlegroups.com.
Documentation
Initially, syzkaller was developed with Linux kernel fuzzing in mind, but now it's being extended to support other OS kernels as well. Most of the documentation at this moment is related to the Linux kernel. For other OS kernels check: Akaros, FreeBSD, Fuchsia, NetBSD, Windows.
- How to install syzkaller
- How to use syzkaller
- How syzkaller works
- How to contribute to syzkaller
- How to report Linux kernel bugs
External Articles
- Kernel QA with syzkaller and qemu (tutorial on how to setup syzkaller with qemu)
- Syzkaller crash DEMO (tutorial on how to extend syzkaller with new syscalls)
- Kernel debug tool with syzkaller (debugging qemu VM created by syz-manager with gdb)
- Coverage-guided kernel fuzzing with syzkaller (by David Drysdale)
- ubsan, kasan, syzkaller und co (video) (by Florian Westphal)
- Debugging a kernel crash found by syzkaller (by Quentin Casasnovas)
- Linux Plumbers 2016 talk slides
- syzkaller: the next gen kernel fuzzer (basics of operations, tutorial on how to run syzkaller and how to extend it to fuzz new drivers)
Disclaimer
This is not an official Google product.