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0xdeafbeef

961 karma · joined May 28, 2021

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0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
upd: reported the bug to qualcomm and tp-link. will update the post if either of them gets back to me
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
Too many exploits is not a that big problem. Non of new fancy exploits with cvss 10.0 from 2026 have worked for this ap. If you don't use all the drivers you have small attack surface. I'd say that it's a surviviourship bias. Bsd has less traction => less bugs found
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
It's not a router, it's an AP, so in my mind it's just a LAN to wifi bridge, a wrapper around the chip :) People were recommending them, it has PoE, roaming works etc. I thought I could buy a consumer product and stop tinkering lol. I'll check Ubiquiti, but I somehow thought that they are overpriced af and never looked into them
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
Nah bug is still in the qcom tree. I've not checked how many devices use it though
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
It was EOL from the factory. 0 updates. But other routers I "own" receive updates regularly so I guess I won some lottery.
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
They often have logic in blobs and run a separate OS inside. See all wifi 7 drivers, all come with blobs and OSS driver simply is a bridge
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
Nope. It was bought in the other country, tplink said to return it where it was bought. I don't even remeber where it was :)
0xdeafbeef··on Wanted to download an ISO, ended up writing a kernel exploit
They have 3 tiers, individuals can have only blue teaming. But it's to restricted. For me it refused to fix a bash parser cause word ssh was in test cases.

Or fix an sql injection

0xdeafbeef··on EmbeddingGemma 2: An open, lightweight multimodal embedding model
Better to have golden tests. Even switch from cpu to gpu can give you different tokens
0xdeafbeef··on Vx – One Language, Every Chip
uintptr_t x = opaque((uintptr_t)p); free((void *)x); free(p);

How will you find such violations if opaque comes from so or some ffi, so compiler can't see through? you can't. It's heuristics. Sound type system is much stronger

0xdeafbeef··on Drawgent: Coding agent on a live Excalidraw canvas
https://likec4.dev/ It's a bit different usecase, but llms are proficient with it
0xdeafbeef··on Fearless SIMD v1.0
Sounds similar to https://mlir.llvm.org/
0xdeafbeef··on Gleam v1.17.0
Todo type in rust will be a never type. Eg thing which exit or panic returns
0xdeafbeef··on Ask HN: Who wants to be hired? (May 2026)
Location: Belgrade, Serbia Remote: Yes Willing to relocate: Yes, preferably EU/UK Technologies: Rust, Python, C, RocksDB, PostgreSQL, Kafka, ClickHouse, TiDB, Vector, Linux hacking, eBPF, Docker, Kubernetes, Ansible, Terraform, GCP, GitLab CI, GitHub Actions Résumé/CV: Available on request. GitHub: github.com/0xdeafbeef, LinkedIn: linkedin.com/in/petrzhikovskii Email: vovkap97@gmail.com
0xdeafbeef··on Securing Elliptic Curve Cryptocurrencies Against Quantum Vulnerabilities [pdf]
I was thinking about transaction processing, eg visa/blockchain. And here storing and sending almost full packet for signature instead of 32 bytes matters. For sessions this shouldn't matter
0xdeafbeef··on Securing Elliptic Curve Cryptocurrencies Against Quantum Vulnerabilities [pdf]
Cost is 100+ times bigger signature size and more cpu usage. If you process several k per second it matters
0xdeafbeef··on Kagi Small Web
Try g.ai. It's stupid fast and uses google indexes. Kagi? sometimes doesn't correctly parse intent, in Google thing you can just ask function doing this and gives you it, with examples, grounding and extremely fast. I'm paying for kagi since the begging and I guess id cancel it because it gives not so much added value
0xdeafbeef··on Show HN: GitHub "Lines Viewed" extension to keep you sane reviewing long AI PRs
Care to opensource? I'd like to use it in firefox, will send a pr
0xdeafbeef··on Improving 15 LLMs at Coding in One Afternoon. Only the Harness Changed
Filed an issue for codex

https://github.com/openai/codex/issues/11601

0xdeafbeef··on Bf-Tree: modern read-write-optimized concurrent larger-than-memory range index
Bftree solves one non-obvious pain point - caching when your data set is random (the key is a hash) and the data is smaller than the page size. LSM reads are based on block size; same with caching. So if your record is 8 bytes, you end up caching the remaining ~4 KB, and the hit rate will be pretty low.
0xdeafbeef··on Bf-Tree: modern read-write-optimized concurrent larger-than-memory range index
I've tested with wal enabled, got deadlock several times, so looks raw for now
0xdeafbeef··on Scaling PostgreSQL to power 800M ChatGPT users
It was 1 year ago. Around 15 tikv serves, 32 cpu, 128 ram each, 4 tb nvme. In this case latency matters a lot. When i had load server in different region with ping of 3ms I got 70k inserts, when moved to the same region with sub ms ping it went to thousands
0xdeafbeef··on Scaling PostgreSQL to power 800M ChatGPT users
Tidb should handle it nice. I've wrote 200к inserts / sec for hour in peak. Underlying lsm works better for writes
0xdeafbeef··on Brave overhauled its Rust adblock engine with FlatBuffers, cutting memory 75%
Also, won't most of the lib be removed due to dead code elimination? And used code will be inlined where applicable, so nothing to dedup in reality
0xdeafbeef··on Rust--: Rust without the borrow checker
Rust can set restricts to all pointers, because 1 mut xor many shared refs rule. Borrow checker empowers this. https://en.wikipedia.org/wiki/Restrict
0xdeafbeef··on Rust--: Rust without the borrow checker
What the point, though? You will get compiling code, but later you would need to reachitecture code to avoid violating rust rules.
0xdeafbeef··on Claude Code gets native LSP support
It takse long to regen on big codebases, but yes
0xdeafbeef··on GPT-5.2
https://www.shloked.com/writing/chatgpt-memory-bitter-lesson

Mb something 've changed since post

0xdeafbeef··on GPT-5.2
Only your questions are in it though
0xdeafbeef··on GPT-5.2
much better https://chatgpt.com/s/t_693b489d5a8881918b723670eaca5734 than 5.1 https://chatgpt.com/s/t_6915c8bd1c80819183a54cd144b55eb2.

Same query - what romanian football player won the premier league

update. Even instant returns correct result without problems

https://chatgpt.com/s/t_693b49e8f5808191a954421822c3bd0d

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