Gustavo A. R. Silva 🐧

Upstream first. 🐧 • • @[email protected] • Avatar by @shidokou

[Gustavo A. R. Silva 🐧 @embeddedgus]

"16 years ago today, after watching a presentation on YouTube titled “Write and Submit your first Linux Kernel Patch” by @gregkh, I submitted my first patch1 to the Linux kernel. 🐧🙂[...]"

https://t.co/BecKDPh05i 🐧

#Linux #OpenSource

[GCC - GNU Toolchain @gnutools]

GNU Tools Weekly News Week 42 (June 14, 2026)

Release updates for GNU toolchain:
 * GCC 15.3.0 was released
  * https://t.co/lwUR1ZaEEw
 * GNU binutils 2.46.1 was released
  * https://t.co/a3IQ24n1oS

GNU toolchain conference reminders:
 * GNU Tools Cauldron 2026, Fri-Sun, October 2-4 (Prague, Czechia)
  * https://t.co/8PFrOm5nYz
  * https://t.co/37emyYDIVC
 * Toolchains Track at LPC 2026, October 7th (Prague, Czechia)
  * https://t.co/uLsWjwMgZJ

General/big GNU toolchain news:

GCC easy issue to tackle of the week (2 this week):
  * `(x == MAX_VALUE) ? y : MIN<x, y>` -> MIN<x,y>
   * https://t.co/LtPN3jgHe1
   * Reach out to Andrea Pinski <[email protected]> for
mentoring on this issue.
 * Improve RISC-V sequence for conditional xor with a constant
   * https://t.co/nbMvY2tPJG
   * Reach out to Jeff Law <[email protected]> for
mentoring on this issue.
* Previous ones are listed on https://t.co/BMSaHXcIhT

GCC commits:
 * https://t.co/nyJK7nrBhU - r17-1559 :  143 commits
 * aarch64: Add support for FEAT_SSVE_BitPerm and some other intrsinics
  * https://t.co/3qOTxGjFIN ... r17-1428-g5da2ddf4ef8d94
 * aarch64: Use MOVI for low‑64‑bit integer SIMD constant vectors
  * https://t.co/evY80wBCMj
 * ranger: Refine modulo range operations with fixed quotient
  * https://t.co/ry3fzlVDJg
 * phiopt: Allow factoring out of more than just single operand operations
  * https://t.co/B5bep5Ap1T
 * driver: Spill long COLLECT_GCC_OPTIONS to a response file
  * https://t.co/7arOwD09PP
 * match: Optimize (~a) >> a to -1 for signed a
  * https://t.co/86uQZfST9B
 * match: Add bitop reduction simplifications against zero
  * https://t.co/uEtL2j9RLx

GCC discussion:
 *

GCC bugzilla stats
 *  138 new issues filed
 *  70 issues closed

binutils/gdb commits:
 * gdb/MicroBlaze: Add support for native linux gdb:
  * https://t.co/FBkbJmvH1m
 *
gdb discussion:
 * RFC: prototype of C extensions using the Python limited API (continued)
  * https://t.co/GZXcEKFqa0
binutils discussion:
  *

glibc commits:
*
glibc discussion:
 *

[The Linux Foundation @linuxfoundation]

📅 The schedule is live for #OSSummit Korea, August 11-12 in Seoul! https://t.co/WIAzGWxmpb

Explore 70+ sessions covering #AI, #CloudNative, #Linux, embedded systems, software security, & more.

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[Gustavo A. R. Silva 🐧 @embeddedgus]

"During one of my presentations at Open Source Summit Japan🇯🇵 the past year, I talked about a bug I found while addressing -Wflex-array-member-not-at-end issues in the Linux kernel. The warning reported by the compiler was [...]"

https://t.co/jenzMTFrzX 🐧

#Linux #OpenSource

[Gustavo A. R. Silva 🐧 @embeddedgus]

@andersonc0d3 Amazing, best of luck!

[Gustavo A. R. Silva 🐧 @embeddedgus]

"16 years ago today, after watching a presentation on YouTube titled “Write and Submit your first Linux Kernel Patch” by @gregkh, I submitted my first patch1 to the Linux kernel. 🐧🙂[...]"

https://t.co/BecKDPh05i 🐧

#Linux #OpenSource

[Gustavo A. R. Silva 🐧 @embeddedgus]

"Today I woke up to the great news that we now have "only" 100 -Wflex-array-member-not-at-end issues left to be addressed in linux-next. I started fixing these issues a couple of years ago after running into a memory corruption bug caused by a flex[...]"

https://t.co/pvnQa2vABA

[Gustavo A. R. Silva 🐧 @embeddedgus]

@linuxfoundation Live Webinar Maintainer Series: My Life as a Linux Kernel Developer and Maintainer with @gregkh

"Greg KH and Shuah Khan talk about Greg’s experience as a kernel developer and maintainer [...]"

https://t.co/AnCO1OpCEX

[Gustavo A. R. Silva 🐧 @embeddedgus]

While reviewing one of the patches sent to the linux-hardening list this afternoon, I spotted a bug I introduced in the same code two years ago (on March 5 2024, to be precise).

Over nearly a decade contributing to the Linux kernel, I've...

Read more: https://t.co/JVbfOflW3k 🐧

[Gustavo A. R. Silva 🐧 @embeddedgus]

I presented at Everything Open @_everythingopen a couple of days ago. 🗣️🐧

My slides are already available for anyone who'd like to check them out.

Thanks for having me - I really enjoyed the session! 🙂✌🏽

https://t.co/zGHcUdCtzE

#EverythingOpen #EO2025

[Gustavo A. R. Silva 🐧 @embeddedgus]

Yet another memory corruption bug caught thanks to -Wflex-array-member-not-at-end! 🐛🪲🐧

https://t.co/BjzbXaehfp

This will soon land in mainline and a couple of stable trees. 😃🐧

Check out this presentation to learn more about this work:

https://t.co/asqcw5EyUh

KSPP ⚔️🛡️🐧

[Gustavo A. R. Silva 🐧 @embeddedgus]

"[...] Always remember: upstream Linux kernel development is highly social. 😉"

[Gustavo A. R. Silva 🐧 @embeddedgus]

I wrote a very short blog post to guide people to resources on how to start fixing Coverity issues and how that can be a great way to contribute to the Linux kernel. 🔍 🖥️ 🐧

It's particularly aimed at newcomers with some experience in C. 🙂

https://t.co/KxGnH4fdiu

[Gustavo A. R. Silva 🐧 @embeddedgus]

Status update on GCC security features for the Linux kernel - Qing Zhao

"Multiple security features for the Linux kernel have been added into GCC releases since GCC11, including "zero call-used registers at return" (GCC11) [...]"

@gnutools

https://t.co/01sFxgu01z

[GCC - GNU Toolchain @gnutools]

Containers with compiler toolchains from https://t.co/IYN13lQK2v
https://t.co/lIYM2DXtaU

[Gustavo A. R. Silva 🐧 @embeddedgus]

Happy to share that the video of my presentation @KernelRecipes last week is up. 🙂🐧⚔️🛡️

https://t.co/wNwGRM9qZE

[Gustavo A. R. Silva 🐧 @embeddedgus]

I’m really happy to share that I'll be traveling to Paris to speak at @KernelRecipes in the week after the Open Source Summit Europe. ✈️🇨🇵🗣️🎙️ I’m really excited about this edition, and as always, feel free to say hi if you see me around. 🙂👋🏽🐧 #Linux

https://t.co/k9AbT6CXIq

[Gustavo A. R. Silva 🐧 @embeddedgus]

https://t.co/Q1eL1wX4cQ (pdf) @KernelRecipes ❤️

[Gustavo A. R. Silva 🐧 @embeddedgus]

Kees Cook on Linux kernel security. 🐧

"I’ve found the term “undefined behavior” to have a really strict meaning within the compiler community, so I have tried to redefine my goal as eliminating “unexpected behavior” or “ambiguous language constructs”. "

https://t.co/fLJbaEHN06

[Gustavo A. R. Silva 🐧 @embeddedgus]

@KernelRecipes

[Velu Erwan @erwanaliasr1]

My talk about @PremdayConf presented at @osfc_io is now online :
https://t.co/fbrjcjShib

[Gustavo A. R. Silva 🐧 @embeddedgus]

@KernelRecipes