Posts
492
Following
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Followers
112
A relatively new professional kernel hacker, born in August 6, 2000, and living in Korea (South!).

- Linux Kernel Developer @ Oracle (Linux Kernel MM) (2025.02 ~ Present)
- Reviewer for the Linux Slab & Reverse Mapping subsystem
- Former Intern @ NVIDIA, SK Hynix, Panmnesia (Security, MM and CXL)
- B.Sc. in Computer Science & Engineering, Chungnam National University (Class of 2025)

Opinions are my own.

My interests are:
Memory Management,
Computer Architecture,
Circuit Design,
Virtualization
hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs
@ljs directly on host, it was wild memory access according to KASAN.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs
Edited 2 years ago
@ljs sometimes during kernel compilation, sometimes while shutting down the machine for rebooting...
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka thanks, finally the semester is over!
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 2 years ago
today I was hit by a kernel bug on the latest mm-unstable and so I was debugging it. but after a few kernel crashes even a normal kernel doesn't boot.... what's wrong with you :(

Not sure if it is a filesystem corruption caused by kernel bug, or they just did happen independently.
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 2 years ago
I have the last final exam today. haven't decided what to do during the summer vacation yet, but it will mostly involve learning new things and writing some kernel code.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs
Edited 2 years ago
@ljs @lkundrak

Not sure if they are something like this
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ljs
@ljs

I'm not gandalf, but exams are like gandalfs themselves, endlessly coming back despite my efforts to kill them all.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka thanks!
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hyeyoo

Harry (Hyeonggon) Yoo

please end me or this semester
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to
@tomxcd

It was 2004 when I got my first computer, but I don't recall the precise model. it was shipped with Windows XP.

The first time I used Linux was Android on my Galaxy S3 phone in 2013; after that, I started using Linux on my desktop since 2014.
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hyeyoo

Harry (Hyeonggon) Yoo

the end of this semester is near,
can't wait for summer vacation
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hyeyoo

Harry (Hyeonggon) Yoo

@monsieuricon

https://lore.kernel.org/linux-mm
It seems to be no longer updated
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hyeyoo
repeated
ljs

Edited 2 years ago
Updated the progress page - dat flat line. Praying that nothing else interferes with progress going forward!

https://linuxmemory.org/progress
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hyeyoo
repeated
ljs

OK so that, minus descriptions of things like mprotect(), madvise(), mremap() and general review and cleanup is process memory done.

Been working on this part of the book (initially I thought it'd be 1 chapter, lol) for at least 6 months.

After a month of basically no book progress due to being away for lsf/mm and ill this is a great relief and keeps me on time after my last reschedule of targets.

Next: OOM killer chapter which, when done, will be released as a sample chapter.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to
@cwayne @ljs

I'm really sorry to hear you guys are having such a tough time. My experience of life may be limited compared to yours, and I may not fully understand, but I'm here to support you in any way I can.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka @MASTERBOOTRECORD

what, already infected even before I buy it?
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @hyeyoo
Called several school departments today and regained access to the e-learning site :P
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka @MASTERBOOTRECORD

wow, that's quite a blast from the past!

did it end up infecting other computers as well, or mess up your computer?
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka @MASTERBOOTRECORD

How have you managed to boot without master boot record?
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to
@vbabka @kernellogger @sj @ljs

the strategy of utilizing LLMs for documentation might be useful for motivating someone to think "Oh, this is a piece of shit, I should completely rewrite it"
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