Практическое применение задачи про мышей и яд в пробирках:

Hash-based differential compilation. The basic premise is to compile part of the kernel with the option turned on, and part of the kernel with the option turned off.

This hashes the object file name with SHA-1, then checks a given bit of the hash out of the first 32 bits (identified by the $BIT environment variable). If the bit is 0, it builds without CONFIG_OPTIMIZE_INLINING. If it is 1, it builds with CONFIG_OPTIMIZE_INLINING. I found that the kernel had around 685 object files at this point (my minimization effort had paid off), which requires about 10 bits for a unique identification

“ВОРОБОИДЫ!” is published by Aleksey Tikhonov in Altsoph’s blog.

semi-interactively explains how TLS works, very cool

Modern computers are vulnerable to malicious peripheral devices

Блочные шифры и как их не надо использовать @g1inko, 2022

orig: https://docs.google.com/presentation/d/1Ar6HAqUFBDEFY3S2AiZLYyVrbkVNlzhKCOVU3Zf-cZA/edit#slide=id.p

Major tech companies are producing far more carbon emissions than they suggest in their sustainability reports.

They’re lobbying hard to rewrite the rules on how emissions are calculated to show net zero on paper, but not in practice.

https://www.ft.com/content/2d6fc319-2165-42fb-8de1-0edf1d765be3

Поиск по базе посещений сайтов в Firefox

SELECT moz_places.url, datetime(moz_historyvisits.visit_date/1000000,'unixepoch','localtime') as date
FROM moz_places, moz_historyvisits
WHERE moz_places.id = moz_historyvisits.place_id

April 9 is CSS Naked Day!

Pagefind is a fully static search library that aims to perform well on large sites, while using as little of your users’ bandwidth as possible, and without hosting any infrastructure.

# Set pid of nginx master process here
pid=8192

# generate gdb commands from the process's memory mappings using awk
cat /proc/$pid/maps | awk '$6 !~ "^/" {split ($1,addrs,"-"); print "dump memory mem_" addrs[1] " 0x" addrs[1] " 0x" addrs[2] ;}END{print "quit"}' > gdb-commands

# use gdb with the -x option to dump these memory regions to mem_* files
gdb -p $pid -x gdb-commands

# look for some (any) nginx.conf text
grep worker_connections mem_*
grep server_name mem_*

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