Kyle Evans (@kaevans91) profile picture

Kyle Evans

@kaevans91

Developer by day, developer by night; FreeBSD stuff @klarainc

 Kansas
Joined October 2010
  • Tweets3.4K
  • Following367
  • Followers867
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Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)Photo by Kyle Evans (@kaevans91)
Kyle Evans retweeted
Nick Price (@DominoTree) profile picture
Nick Price@DominoTreeSep 22
I vibe-coded a kernel module for FreeBSD that uses GitHub's downtime as an entropy source github.com/DominoTree/ghrand…
Image from Nick Price (@DominoTree)
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Kyle Evans retweeted
Colin Percival (@cperciva) profile picture
Colin Percival@cpercivaSep 13
Conference news: BSDCan 2027 will be in **Vancouver**, July 7-10. Yes, that's right, after over two decades in Ottawa we're moving to a city which has more direct international flights. EuroBSDCon continues moving and will be in Bratislava in 2027, dates TBD.
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I've seen some people claim that AI has been used for coding for 10 years or more. GitHub Copilot came out 5 years ago. Before that, there was nothing significant or widespread. We can all have our opinions on LLMs, but let's not forget this is all VERY recent!
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Kyle Evans retweeted
Colin Percival (@cperciva) profile picture
Colin Percival@cpercivaJun 16
FreeBSD 15.1-RELEASE is now available: lists.freebsd.org/archives/f… Thanks to the hundreds of developers who made this possible.
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Kyle Evans retweeted
Colin Percival (@cperciva) profile picture
Colin Percival@cpercivaMar 10
FreeBSD 14.4-RELEASE is now available: lists.freebsd.org/archives/f…
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Does the kind of fuzzer I want exist? AFL and libFuzzer typically (exclusively?) operate in a model where (hand-wave) they're expcted to immediately run (or be resident in) the instrumented program, but I've run into two separate scenarios where it'd be incredibly useful...
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... to have a fuzzer that splits input from the feedback. Ideally: (input server) -> (uninstrumented thing) -> (instrumented binary)
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The (uninstrumented thing) could be anything. Consider scenarios like: I want to fuzz a thing that receives data over the network. I can take a lot of liberties with how it's started, but I'd rather not modify it more than adding the necessary instrumentation.
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I will be at the FreeBSD vendor summit in San Jose, California, on November 6-7. If you're in the area and your company uses FreeBSD, you should probably be there too. freebsdfoundation.org/news-a…

November 2025 FreeBSD Vendor Summit | FreeBSD Foundation

Join us for the November 2025 FreeBSD Vendor Summit. The event will take place November 6-7, 2025. The Summit provides commercial FreeBSD users with the unique opportunity to meet face-to-face with...

freebsdfoundation.org
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FreeBSD 15.0-ALPHA4 is now available: lists.freebsd.org/archives/f… As with ALPHA3, *do not use freebsd-update to upgrade yet*. An Errata Notice will be coming out shortly to fix a critical bug in freebsd-update.
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FreeBSD 15.0-CURRENT is dead. Long live FreeBSD 15.0-PRERELEASE! (For the next 4 weeks; after that I'll branch stable/15, which will be 15.0-ALPHA1, and main will become 16.0-CURRENT.)
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Where do I connect with FreeBSD kernel and security developers? My interest is in security but I don’t see a whole lot of activity in that mailing list. I’m a terrible kernel developer since I’m new but I’m eager and want mentorship.
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About to land another Lua rewrite (in internal tooling): reviews.freebsd.org/D39084 -- it's only a little less scary than the last one (makesyscalls), but I think we can improve it incrementally a little easier
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OpenBSD SO_SPLICE implementation supports zero-copy TCP/UDP socket splicing, and is much more useful than Linux splice(2). Supports unidirectional and bidirectional splicing. Looks like FreeBSD recently added a compatible implementation as well for 15.x: reviews.freebsd.org/rG93ff7d…
Dmitrii Kovanikov (@ChShersh) profile pictureDmitrii Kovanikov
@ChShersh15 Jan 2025
TIL about the Linux function splice(2) that moves data between file descriptors without actually copying the data. This piece of magic was available since 2006.
https://man7.org/linux/man-pages/man2/splice.2.html

ALT https://man7.org/linux/man-pages/man2/splice.2.html

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Kyle Evans retweeted
vermaden (@vermaden) profile picture
vermaden@vermaden10 Jan 2025
To manage Bhyve VMs on FreeBSD - the vm-bhyve seems most natural and sensible choice. It only has one drawback - VMs can have only 30 devices (about 20+ in practice) ... but not anymore. With this Pull Request from @oshogbovx it uses full PCI standard. github.com/churchers/vm-bhyv…
Use entire PCI device range by oshogbo · Pull Request #576 · churchers/vm-bhyve

Use entire PCI device range by oshogbo · Pull Request #576 · churchers/vm-bhyve

Previously, vm-bhyve only distributed devices on PCI bus 0, despite bhyve supporting multiple PCI buses. This limited the number of virtual devices a VM could use. This commit addresses that issue ...

github.com
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The @BSDCan 2025 Call For Presentations is open. Proposals must be submitted by February 12th; talks will take place on June 13th/14th in Ottawa, Canada. Conference scope in a line: "Doing something interesting with or on BSD; technical content only (no marketing pitches)."
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#OpenBSD now supports a new socket(4) type, AF_FRAME, for sending/receiving Ethernet dgram sockets. Intended to be an alternative to bpf(4) for implementing low-overhead/data protocols, such as LLDP (Link Layer Discovery Protocol). marc.info/?l=openbsd-cvs&m=1…
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Finished most of a feature for my porch(1) (expect-like) utility that was inspired by chatting with ChatGPT for a little bit. "porchgen", which generates a crude script to reproduce the execution flow that you drove manually.
Picture of a terminal window with three panes, the top two demonstrates having run porchgen(1) and following the flow of a toy interactive program, and the other pane showing the resulting orch(5) script.

ALT Picture of a terminal window with three panes, the top two demonstrates having run porchgen(1) and following the flow of a toy interactive program, and the other pane showing the resulting orch(5) script.

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To all #FreeBSD users: What features of FreeBSD are your favorites? And what makes you keep choosing it over other operating systems? For me, it's a couple reasons: - Filesystem layout, especially how /usr/local is used - Jails - ZFS - I feel like it respects my privacy best
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Kyle Evans retweeted
Daniel Lemire (@lemire) profile picture
Daniel Lemire
@lemire2 Dec 2024
FreeBSD is a well-established operating system, akin to Linux but with distinct origins. It powers critical systems such as Sony's PlayStation and Netflix's infrastructure. In FreeBSD, the standard C function for generating a random integer within a specified range, like between 0 and 10, is `arc4random_uniform`. Recently, developer @FUZxxl enhanced this core function by optimizing the number of divisions required per function call. This optimization resulted in significant performance improvements. The takeaway from this development is that even highly established functions can benefit from further optimization. Reference: - Fast Random Integer Generation in an Interval, ACM Transactions on Modeling and Computer Simulation, Volume 29, Issue 1, 2019.
Image from Daniel Lemire (@lemire)
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