Linux Kernel 6.13 | you won a guitar pedal?

[@Lepton00]

A little more insight into stack smashing: most programming languages and hardware support allowing you to modularize your code into subroutines or functions, where one function can call into another function, wait for that other function to finish and it returns to the calling function and continuing to execute the the instructions after the call instruction. The way this usually works is it puts the return address to where the called function will return onto the stack so the called function knows where to return to when it is done. Also put on the stack are temporary variables the running function is using that get destroyed once it is finished and returns to the calling function. Stack smashing involves overflowing one of those temporary variables through a known vulnerability to the point that it overwrites that return address on the stack and usually overwrites it with a pointer to executable code it put on the stack using that variable overflow exploit. When the function naturally returns it returns to the code on the stack instead of where it was supposed to return. Return oriented programming is doing something similar. Instead of pointing that return pointer to something on the stack it replaces it with a pointer to something already in the running program's executable code. They will piece together a series of return pointers to code snippits from the libraries the program is using that the exploiters know about in such a way that it executes the attack payload they want to do. They just need to pick return locations that will execute what they want and immediately return. String enough of these snippits together and you can get it to do what you want. This avoids the executable memory restriction imposed on the stack by executing out of the executable areas of the program instead of the stack.

[@Maple-Circuit]

That is worthy of the 📌!

[@eajaykumar]

You are only one who goes deep into kernel features explanation I have seen in youtube

[@Maple-Circuit]

Thanks!

[@itsHanibee]

was waiting so eagerly for the development recap for this release, thank you for the content! ..extra part!

[@Maple-Circuit]

Extra 🎵 Part

[@Grstearns]

Extra part! These videos are amazing, so glad you are finding a groove that makes it easier to put them together.

[@Maple-Circuit]

Thanks!

[@JonBrase]

3:46 It's important to note that userspace programs can always be preempted (this isn't Win16!). The various PREEMPT modes just determine how preemptible the *kernel* is.

[@Maple-Circuit]

True!

[@MmC-l6o]

Please bro keep up the grind your contents amazing you’ll make it big soon

[@Maple-Circuit]

Ain't stoppin'

[@GuzikPL4]

I love this in-depth explanation of every feature! Thank you so much, i am learning a lot

[@Maple-Circuit]

Happy that you like it 😀

[@himem-sys]

Amazing work and content! Ty very much!

[@TheAlen081]

Really like having these explained, cheers!

[@Maple-Circuit]

Thanks!

[@jobjobse3331]

Thanks for the interesting video! The preemption changes sound promising.

[@Maple-Circuit]

Thanks!

[@adrian_sp6def]

You have soo deep understanding on kernel feachures You should write a book about it. You are awsome!!!

[@Maple-Circuit]

I'm a really bad writer (; This is why videos are for me!

[@adrian_sp6def]

@Maple-Circuit you really really underestimate yourself!

[@mrgraydiamond]

Extra part

[@Maple-Circuit]

EXTRAAA PART!!

[@carterisoffline]

Getting ready for the inevitable René Rebe rant on the removal of yet another architecture 😂 Hoping that Kent can behave and BcacheFS can thrive. Say what you want about data stability but I think it's a pretty neat filesystem, and it's got some great potential.

[@Maple-Circuit]

XD Me too brother, it would be so good to be able to get the New gen FS and not yet another reiserfs (;

[@w4f7z]

Love your work. I'd appreciate a deeper dive on the networking side.

[@Maple-Circuit]

Will do!

[@JonBrase]

"Scheduler" is stressed on the first syllable and the second syllable is reduced to basically reduced to an L (like the second syllable of "battle"), you don't really hear the "you" (except that the y part of the "you" turns the d into a j). The second and third syllables are both very short, the first syllable should take up maybe about half of the time it takes you to say the whole word. SKEJ-l-r

[@edhyjoxenbyl1409]

i just learn today that you are french! I am too :D

[@vinylSummer]

I assumed he's Canadian because of the maple

[@foufou33g]

Quebecer (or better yet Quebecois) tabanak! No go eat your poutine !

[@Maple-Circuit]

I'm a Poutine eating French Canadian

[@edhyjoxenbyl1409]

@ I'm a Baguette eater tho :

[@yayakame]

extra part!1!1! great video like always

[@Maple-Circuit]

Eeextttrrraaa paarrttt

[@magovermelhoffv4729]

50min Kernel 6.13 video 😍

[@Maple-Circuit]

😍

[@XueYlva]

as a guitarist of 19 years who's obsessed with Linux, this video found me and gave me the free guitar pedal I never knew I needed

[@XueYlva]

I don't use any pedals

[@Maple-Circuit]

Lol, this is awesome (;

[@benjamindepaz8429]

As an American, native English speaker, what it seems to me is that we pronounce words in a very blocky way. We don’t smoothly flow our syllables together. Scheduler is a good example. We say it SKED - jew - ler. Or some variants of American accent will say SKED - jul - ur. But in any event we always put the emphasis on the first syllable. It’s very common in American English to put emphasis on the first syllable, including proper names. Of course, there are exceptions like Atomic where we emphasize the middle syllable: uh - TOM - ic. Not that I’m a lingual expert or anything, but just as an American, the biggest thing I see with non-native English speakers is that they try to flow the syllables together, whereas we have a lot of enunciation on syllables that make it come out sounding more blocky; we like to clearly separate our syllables. We also are more flat with our pitch. We raise our pitch at the end of sentences to indicate a question; or if we’re intentionally trying to emphasize a specific word or phrase. But in general we don’t vary our pitch very much within a single sentence, except for some accent variations like southern ones. I personally speak in a General American accent so my voice pitch doesn’t change that much. That being said: YOUR accent sounds more American than a lot of native French speakers that I’ve heard. Very passable.

[@jhuyt-]

Great overview as always! Regarding the pronunciation of scheduler, I think you just stress it differently, on the second syllable instead of the more typical first syllable. But I enjoy your french canadian accent so please keep being yourself!

[@Maple-Circuit]

Thanks for the tips!

[@RebelCoderX]

Dude your english pronunciation is fine. I didn't hear any french accent. To be honest I thought you were native american or something. So what if you get a few words wrong? You should listen to an ST Microelectronics STM32 tutorial. But in case you don't have the time or can't be bothered.. I think they are a great way to learn french pronunciation, because learning anything else from them is almost impossible (for me at least, because I don't understand at least half of what they are saying in those videos)..

[@Maple-Circuit]

Thanks (;

[@KunalVaidya]

scheduler - is the US vs UK - Indian version of pronunciation. we in india tend to go with straight forward sounding out the letters present in spelling. and schedule has been pronounced as shedule in india already .

[@MCrex007]

Soften to C in scheduler, the s, c, and h should all kinda blend together into a soft schhh. Don't press your tongue into the roof of your mouth too hard to cut it off completely.

[@timothywcrane]

I've been preempting in a lazy fashion for years top>kill pid. LOL. thanks for the infovid. People often overlook everything below the desktop.

[@Maple-Circuit]

lol, Thanks!

[@yeshey5443]

Extra part ;P I had a crazy set up with LVM and lvm-cache with btrfs before, and I took a leap and installed BcacheFS as root across two partitions, its much more performant and I haven't had problems with it, but I live in the fear that its going to explode some day. Looking forward to the day we can get bcacheFS updates here again ahaha

[@Maple-Circuit]

Indeed, we all want BcacheFS to succeed!

[@vilian9185]

Why you didn't just used BTRFS?, lvm was probably killing the performance

[@yeshey5443]

@@vilian9185 bc i wanted lvm cache, btrfs doesnt have "Dynamic Storage Tiering - NVME (superfast) + SSD (mid-tier) + HDD (slow) - manipulate 'brtfs balance' profiles " by itself, bcache does tho

[@yeshey5443]

@@vilian9185 bc i wanted lvm cache, and btrfs doesnt support "Dynamic Storage Tiering - NVME (superfast) + SSD (mid-tier) + HDD (slow) - manipulate 'brtfs balance' profiles" yes, but bcacheFS does

[@OfficialViper]

Thanks Chad

[@RustIsWinning]

Rust part 🦀

[@Maple-Circuit]

Based

[@XueYlva]

im gonna rust a nut

[@dubyeh5243]

Good job

[@Maple-Circuit]

Thanks

[@shawnzhong]

EXTRA PART

[@Maple-Circuit]

Extra 🎵 Extra 🎶 Part

[@DreamsAPI]

extra part

[@oof-software]

Regarding your website: Maybe add a link somewhere to the obsidian-webpage-export plugin (I assume you used this since it looks the same). That plugin is really cool but it took me a bit to find out how you generated the website and adding a link would make it easier for others to publish their notes. Love the videos

[@Maple-Circuit]

You are soo right, thanks!

[@LokiCDK]

Skedge-you-ull, though some will soften the sch.

[@autohmae]

I think Kent of bcachefs had some plans to build a company or other group around the project, I think he should just get someone who does the communication with 'upstream' aka the Kernel mailinglist.

[@autohmae]

Maybe if you want an 'extra part', as someone who uses Kubernetes, I know some features are used by some like ID-mapped mounts or CRIU (only used very little in Kubernetes, but I think a lot of people aren't aware these things exists). Or maybe just explain all the namespaces used by containers ?

[@Maple-Circuit]

Will look at it!

[@doyinawosanya17]

Could this help with power efficiency. Possibly matching windows levels on laptops

[@Maple-Circuit]

All kernels are a little bit more power efficient due to their optimization, but if you are asking about lazy preempt, no.

[@cem_kaya]

so is that how scheduler is written in french ?

[@Maple-Circuit]

Scheduler in french is coordinateur or panificateur, so yes that word is out of my reach XD

[@linuxguy1199]

Part extra

[@Maple-Circuit]

Part Part Part Extra!

[@lassdasi]

Somehow the KZbin timestamps are not shown for me, but I can see it in the description. Is it somehow misformatted?

[@Maple-Circuit]

I just double-checked, and they work for me (tested on an android).

[@FurqanHun]

anyone who exploits return oriented programing is a wizard, heck anyone that does that low level exploitation is a wizard, even maple circuit is a wizard, he can make this brain understand each kernel update and is french contrary to how this monke brain thought (canada). i'm personally waiting for nt_sync() tbh, just so i can test some windows apps (not that i usually use them) i just want to see how much of a performance difference would be there without the bottlenecks in e_sync or f_sync. also EXTRA PART EXTRA PART!

[@Maple-Circuit]

Well, you were right as I am french candian (; yes, the integrations of features like nt_sync are really interesting. It will boost wine in a way never done before!

[@FurqanHun]

@@Maple-Circuit I learned it few months ago during a trivia that canada has french as an official language and two provinces have it as their first official language, i didn't knew that even though i know some people from canada 🥲 Also, nt_sync will be fun to test, the prep is alr there in kernel and we probably will see it in 6.14 (or maybe 6.15 who knows)

[@chaoticsystem2211]

Schrödingers timestamp?

[@Maple-Circuit]

Some say they do work others don't, truly schrodingers XD

[@jagagemo8141]

Parte Extra

[@Maple-Circuit]

Extra extra!

[@Zimx02]

I don't understand the guitar pedal part :L

[@Maple-Circuit]

Linus had a small lotery for guitar pedal kit that he soldered over the holidays, he said that he had 1 to give away and ended up making and giving 5 of them (;

[@sukaisnaini1843]

RIP reiserFS

[@Maple-Circuit]

RIP

[@kiseitai2]

Maple.extra_part()?

[@Maple-Circuit]

Returned 1, you successfully executed extra_part()!

[@bertblankenstein3738]

I won't bug you about how you pronounce scheduler if you don't bug me about how I pronounce poutine. 😄

[@bertblankenstein3738]

Thank you for the video.

[@Maple-Circuit]

Lol (;

[@YeisenAchitel]

lolz... ske djul ar... its ske dju lar...

[@Maple-Circuit]

skeyjulard

[@Chat_De_Ratatoing]

i'm french and i thought you were american

[@Maple-Circuit]

Well thanks 😊

[@smashed_penguin]

Right? Don't sound nearly as French as the only other French video creator I can name off the top of my head, coincidentally also a Linux channel, The Linux Experiment.

[@Maple-Circuit]

@@smashed_penguin French Canadian are speaking in a different way than France's French which makes speaking English easier (;

[@nyxiereal]

your videos are amazing but your ai generated pfp puts me off, replacing it with something made by a real human would be better

[@Maple-Circuit]

true, will think, and fix it (;

[@htpc002Weirdhouse]

My extra part: SKEDJ you lurr.

[@Maple-Circuit]

SKED Extra

[@intellis9610]

Extra part

[@Maple-Circuit]

Extra extra part!

[@dubyeh5243]

Extra part

[@Maple-Circuit]

Extra extra part!