Posts
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Following
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Followers
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Linux Kernel security developer, working for Microsoft. Also W7TXT. Views are my own.
Topics: #Linux #kernel #security, #amateurradio, #RF, #hamradio, #electronics, #science, #radioastronomy, #physics, #space, #arduino.

📡 https://w7txt.net/
🐧 https://blog.namei.org/
☠️ https://www.facebook.com/w7txt
jmorris

James Morris

@cancel "... and so the College of Cartographers evolved a Map of the Empire that was of the same Scale as the Empire and that coincided with it point for point" - from Borges.

RE: https://merveilles.town/@cancel/114441005419895655
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jmorris

James Morris

@tveskov ADHD joined the chat

RE: https://mastodon.social/@tveskov/114443895338758484
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jmorris
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LWN@fosstodon.org

LWN.net is now @LWN@lwn.net

[$] Topics from the virtual filesystem layer

In the first filesystem-track session at the 2025 Linux Storage, Filesystem, Memory Management, and BPF Summit (LSFMM+BPF), virtual filesystem (VFS) layer co-maintainer Christian B [...]

https://lwn.net/Articles/1017128/

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jmorris
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zygoon@fosstodon.org

Zygmunt Krynicki

I've just released mount-insight v0.1 https://gitlab.com/zygoon/mount-insight/-/releases/v0.1

Here's an excerpt from the release notes:

This is the initial release of mount-insight, a tool created to explore and display the data provided by the statmount system call.
Some features are only going to work once Linux 6.15 is released. The code needs to see matching, up-to-date headers for userspace Linux APIs as well.

CC @brauner

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jmorris

James Morris

@jan Happy May Day!

RE: https://toot.io/@jan/114433690558424859
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brauner@mastodon.social

Christian Brauner 🦊🐺

1/n

Oh yeah, I already mentioned this a while ago but I also added support for pidfds in Linux coredumps.

/proc/sys/kernel/core_pattern has been extended so userspace can instruct the kernel to install a pidfd for the
crashing process into the usermode helper process, e.g., systemd-coredump.

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l0kod@mastodon.social

Mickaël Salaün

I released a new version of the crate: https://github.com/landlock-lsm/rust-landlock/blob/HEAD/CHANGELOG.md#v042 
We can now easily restrict signal sending and connections to abstract UNIX sockets for programs. The documentation and tests have also been improved. Last but not least, a few new features will be useful for the upcoming Landlock configuration format.

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jmorris
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LinuxSecSummit

Linux Security Summit 🐧

Just over a week left to submit your proposals to LSS Europe.

👉 CfP close: Tues 8th May.

RE: https://social.kernel.org/objects/6a3d78aa-bd5c-486e-9278-2ee7cec58c1b
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jmorris

James Morris

@codegouvfr looks like it will be a great conf!

RE: https://social.numerique.gouv.fr/@codegouvfr/114415702904440754
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LinuxSecSummit

Linux Security Summit 🐧

Edited 1 month ago
📢 🐧 The schedule for LSS-NA (Linux Security Summit North America) is published:

➡ https://events.linuxfoundation.org/linux-security-summit-north-america/program/schedule/

LSS-NA is co-located with the Open Source Summit in Denver, Colorado, USA. June 27-26.

Registration and general information:

➡ https://events.linuxfoundation.org/linux-security-summit-north-america/


#linux #security #infosec #lss #linuxsecuritysummit #linuxfoundation #lf

cc: @linuxfoundation
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jmorris

James Morris

@juanan looking forward to see Harvard's increased investment in open source!

RE: https://infosec.exchange/@juanan/114183068696835294
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jmorris

James Morris

#SCaLE22x videos are up!

https://www.youtube.com/@socallinuxexpo/playlists


@socallinuxexpo
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jmorris

James Morris

Playing with AlmaLinux Kitten. 
$ cat /etc/almalinux-release && getenforce
AlmaLinux Kitten release 10 (Lion Cub)
Enforcing
Nice. Very nice. @almalinux
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jmorris

James Morris

"Oh, you're a fan of π day? What are the first hundred digits?"
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jmorris

James Morris

Ok, I'm close to giving up on running my own mail server. Spammers are winning the arms race vs. small mail servers.

What commercial services are folk using for personal mail domains?
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jmorris

James Morris

The results are in, with 18 votes. I kind of like bsky but not seeing a critical mass of people in my areas of interest.

If you answered other, please feel free to explain.

In honor of this landslide vote, here's a photo of my latest tinkering: making pipecap filters for an 11 GHz RF multiplier (using the W1GHZ board & design). I'll use brass M3 tuning screws once some arrive from McMaster-Carr, although I'd be interested to see if they are very different to stainless steel. And yes, I had to order them online after not finding any metric brass fasteners locally. Why not use SAE screws? Standard metric screws have much higher TPI, even more than fine-thread SAE. This will provide better mechanical stability & finer tuning, but then again, I'm not building a spaceship here, so 🤷

#hamradio #amateurradio #microwave #rf #nerds #fediverse

RE: https://social.kernel.org/objects/81c8273c-6a3f-43d9-bfc9-673541118280
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LinuxSecSummit

Linux Security Summit 🐧

🐧 Reminder!

The CfP for LSS-NA closes on Monday, March 10th.

RE: https://social.kernel.org/objects/ce535ac2-22f2-4dc4-9b97-a4dbdab01153
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jmorris

James Morris

Best place to engage on technical topics with actual people:
94% Fediverse
0% Bluesky
5% Other
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gigabecquerel@chaos.social

gigabecquerel

Well folks, I'm on vacation again, and you know I could not resist...

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jmorris

James Morris

Weekend tinkering: finally made enough room for a microscope on my bench and looked at small things. The chip of interest is 0.7mm wide: a ~60 GHz amplifier.

#hamradio #amateurradio #electronics #rf #mmic #microwave #millimeterwave #mmwave
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