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Linux kernel developer, focusing on memory management, slab.git maintainer. Works at SUSE Labs.

"you want to be a hacker, kid?"

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27329ed9-2211-a1ba-9371-e2641bf0dcb6

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Mozilla.ai don't seem to be serious people, their recent publication shows a level of incompetence that's indistinguishable from neglect.

(Original title: Mozilla.ai did what? When silliness goes dangerous)

https://tante.cc/2024/06/26/mozilla-ai-did-what-when-silliness-goes-dangerous/

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Vlastimil Babka

Edited 2 months ago
@oleksandr @lkundrak you should go to Malt Worm today, they have Didko tap takeover https://www.facebook.com/events/867814991840408 https://maltworm.cz/en/home/
I should have gone to Dno Pytle yesterday, alas I suck. You don't have to!
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"now pick up the serial cable and try again."

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Q: What does "B" in name Benoit B. Mandelbrot stand for?
A: Benoit B. Mandelbrot.

(Not mine)

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BREAKING: Julian Assange is still an enormous piece of shit

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Vlastimil Babka

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Larry Finger, Linux wireless hero, was a persistent, patient coder and mentor

Remembering Finger, 84, who learned as he went and left his mark on many.

https://arstechnica.com/gadgets/2024/06/larry-finger-linux-wireless-hero-was-a-persistent-patient-coder-and-mentor/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social

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Extensible scheduler class, or sched_ext, is hot! I wrote a blog post about the design and architecture of the sched_ext framework. After reading the blog post, you will be able to read and understand each scx scheduler code.

https://blogs.igalia.com/changwoo/sched-ext-scheduler-architecture-and-interfaces-part-2/

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Vlastimil Babka

@oleksandr this any good?
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“TODO” in code doesn’t mean you’re actually going to do it, it means you don’t want questions about why you didn’t do it.

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27329ed9-2211-a1ba-9371-e2641bf0dcb6

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27329ed9-2211-a1ba-9371-e2641bf0dcb6

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Vlastimil Babka

So @rostedt isn't the only one who can define if(), it seems

RE: https://masto.ai/@litherum/112638731008250956
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Want to help improve Linux kernel memory safety?
KFENCE has been available since Linux 5.12, and has matured well since then, with several big distros enabling KFENCE, so chances are your kernel already supports it.

Occasionally KFENCE bug reports appear on bug trackers, forums, etc. but I suspect 1000s of reports are lost.

Keeping it simple, I present kfence-cron:
https://gist.github.com/melver/7bf5bdfa9a84c52225b8313cbd7dc1f9

More about KFENCE: https://docs.kernel.org/dev-tools/kfence.html
About the general idea: https://arxiv.org/pdf/2311.09394

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Vlastimil Babka

I often make fun of @ljs for using wifi on his desktop, but the truth is something sucks with my ethernet connection from desktop to Turris, despite this being done with just a 1m factory-made patch cable. So far I've found 2 things that cause short link-downs:
- electrical blinds being moved in the nearby windows
- a close enough lightning strike

But there are other yet unkown factors too. Helpfully, @NetworkManager will always use these events to drop the vpn without restarting it automatically :( (or just waiting for the few seconds until the link recovers).
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After 14yrs, the RickRoll is no more. It's finally been taken down.

Another internet meme bites the dust.

https://www.youtube.com/watch?v=dQw4w9WgXcQ just shows an error msg now. 😞

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Got unreasonably excited about this new, incredibly straightforward count-distinct algorithm. The CVM algorithm is a direct replacement for HyperLogLog, it nerd-sniped Donald Knuth for weeks, *and* it can easily be taught in an entry-level CS course.

https://www.quantamagazine.org/computer-scientists-invent-an-efficient-new-way-to-count-20240516/

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