Posts
428
Following
449
Followers
349
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

Not sure who needs to hear this but microwave ovens operate at UHF.
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jmorris
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securepaul@fosstodon.org

Paul Moore

The Linux v6.7 merge window has been open for a few days now, here are the SELinux and audit highlights:

https://paul-moore.com/blog/d/2023/11/linux_v67_merge_window.html

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jmorris
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pid_eins@mastodon.social

Lennart Poettering

So we merged this → https://github.com/systemd/systemd/pull/28891 into systemd today. I like to believe that this is a major step towards closing the "TPM gap" we have on Linux toward other OSes. It can automatically generate an automatic TPM2 PCR policy from various inputs covering the PCRs that generally are hard to predict by the OS vendor, i.e. things like local firmware versions, extension cards and so on. It stores this in an NV index in the TPM. Things like LUKS can then be locked against that NV index.

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jmorris

James Morris

Reply to @kernellogger@fosstodon.org
@kernellogger @monsieuricon who actually reads lkml ?
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jmorris

James Morris

Working on some long-needed updates to my 1.2m dish setup. Mounting an azimuth sensor (ETS25 absolute encoder) directly under the Az slew drive. A previous belt-driven version was too complicated. This is all upside down, btw. #amateurradio #hamradio #radioastronomy #electronics #microwave
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jmorris

James Morris

Reply to @breakingtaps@universeodon.com
@breakingtaps @North very interesting. Seems like it would be useful for epoxying tiny mmwave diodes, too.
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jmorris
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netdevconf@fosstodon.org

Netdev Conf

Reminder, the big day starts Monday 8:30. You can still join remotely! @netdev01 0x17 https://netdevconf.info/0x17/pages/sessions.html

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jmorris

James Morris

Reply to @stdlogicvector@chaos.social
@stdlogicvector The copper heatspreader (?) is worth $$ alone.
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jmorris

James Morris

Reply to @kees@fosstodon.org
@kees great to see this hw available for general use.
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jmorris

James Morris

Reply to @LaF0rge@chaos.social
@LaF0rge beautifully engineered. It's a shame it's not economically viable to manufacture most devices at this level of quality now. I'm always blown away when I open up old Tektronix or HP test gear, which was typically also aircraft rated.
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jmorris

James Morris

@breakingtaps interested in any info here, too.

RE: https://universeodon.com/users/breakingtaps/statuses/111319264146509283
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stgraber@hachyderm.io

Stéphane Graber

Video overview of 0.2 is live now!
https://www.youtube.com/watch?v=ePvhWNv-gp4

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jmorris

James Morris

Reply to @jmorris
@abraxas3d e.g., for ARQ there is STANAG 5066, which looks horrendously complex, but I wonder if some useful subset of that could be extracted. There’s an open source project which seems abandoned ? https://github.com/Rhizomatica/open5066
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jmorris

James Morris

Reply to @ellie@hachyderm.io
@ellie many many years ago, running a large Solaris prod box for the first time, after Linux. ‘killall’ command behaviour was different.
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jmorris

James Morris

Reply to @g4dbn@mastodon.radio
I'll be very interested to see how it performs.
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jmorris

James Morris

Reply to @avidseeker@fosstodon.org
@avidseeker Try finding a file via a desktop GUI on any OS these days, "find" sucks less, IMHO.
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jmorris

James Morris

Made some millimeter waves today, presumably at 47.088 GHz. Using a Kuhne synth at 11.772 GHz into a WA1MBA quadrupler. I’m able to detect power in this band (6mm), but not frequency (yet). #microwave #mmwave #hamradio #amateurradio.
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jmorris

James Morris

Reply to @abraxas3d@mastodon.radio
@abraxas3d Thanks for all the work you do! One of the participants made a good point that this may lead to more experimentation -- hoping to see an open high speed digital waveform for HF one day. The STANAG/M110A waveforms may be one possible direction. I have a few simple ideas but not enough time... as always.
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LWN@fosstodon.org

LWN.net

Incus 0.1 released https://lwn.net/Articles/947136/

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l0kod@mastodon.social

Mickaël Salaün

Reply to @bluca@fosstodon.org

"Microsoft Azure Boost: Image-based Linux powering the Azure fleet", a deep dive into a tailored Linux distro focused on security that provides offloading and acceleration. A great talk by @bluca at @allsystemsgo!
A lot of stuff is introduced: Linux hardening, remote attestation, SELinux, dm-verity, IPE, LUKS, fs-verity, overlayfs, systemd portable services, soft reboot, ARM, FPGA, DPDK...
Slides: https://cfp.all-systems-go.io/all-systems-go-2023/talk/7URRNC/
Recording: https://youtu.be/iB-wRdC8zNs

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