Posts
476
Following
91
Followers
93
n00b Kernel Hacker
- Linux Kernel Developer @ Oracle (Linux Kernel MM) (2025.02 ~ Present)
- Ex-Intern @ SK Hynix (Linux Kernel MM) (2024.12 ~ 2025.01)
- Ex-Intern @ NVIDIA Korea (Security System Software) (2024.06 ~ 2024.11)
- Ex-Intern @ Panmneisa (CXL emulation stuff) (2023.09 ~ 2023.12)
- Undergraduate majoring CSE (estimated graduation: Feb. 2025)
- Working as reviewer at Linux Slab subsystem
- Born in August 6, 2000

Opinions are my own.

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

Hyeonggon Yoo

I want NVIDIA's proprietary GPU drivers 🥲
nouveau does not support virtual GPUs...
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hyeyoo

Hyeonggon Yoo

Edited 1 year ago
I was refreshing my zsdesc patch series but encountered unrelated bug while testing (I bought new RAM so it must be software bug...)

Fortunately it was bisectable and I'm writing a report about it
Not sure if people will welcome an oops image instead of text format.
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hyeyoo

Hyeonggon Yoo

a funny thing about memtest is that it can fail due to memory failure.
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hyeyoo

Hyeonggon Yoo

Reply to @hyeyoo
@ljs gotcha!
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hyeyoo

Hyeonggon Yoo

Reply to @hyeyoo
@ljs hmm I tried to boot using two different bootable USBs but both says something has been corrupted. It makes me think the kernel may be innocent
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hyeyoo

Hyeonggon Yoo

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

Hyeonggon Yoo

Reply to @ljs
Edited 1 year ago
@ljs sometimes during kernel compilation, sometimes while shutting down the machine for rebooting...
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hyeyoo

Hyeonggon Yoo

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

Hyeonggon Yoo

Edited 1 year 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

Hyeonggon Yoo

Edited 1 year 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

Hyeonggon Yoo

Reply to @ljs
Edited 1 year ago
@ljs @lkundrak

Not sure if they are something like this
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hyeyoo

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

Hyeonggon Yoo

Reply to @vbabka
@vbabka thanks!
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hyeyoo

Hyeonggon Yoo

please end me or this semester
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hyeyoo

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

Hyeonggon Yoo

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

Hyeonggon Yoo

@monsieuricon

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

Edited 1 year 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

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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