Ubuntu debuginfod and source code indexing

You might remember that in my last post about the Ubuntu debuginfod service I talked about wanting to extend it and make it index and serve source code from packages. I’m excited to announce that this is now a reality since the Ubuntu Lunar (23.04) release. The feature should work for a lot of packages from the archive, but not all of them. Keep reading to better understand why. The problem While debugging a package in Ubuntu, one of the first steps you need to take is to install its source code.

Debuginfod is coming to Ubuntu

These past couple of months I have been working to bring debuginfod to Ubuntu. I thought it would be a good idea to make this post and explain a little bit about what the service is and how I’m planning to deploy it. A quick recap: what’s debuginfod? Here’s a good summary of what debuginfod is: debuginfod is a new-ish project whose purpose is to serve ELF/DWARF/source-code information over HTTP. It is developed under the elfutils umbrella.

A debuginfod service for Debian

Hi there. Long time no write! This last Tuesday, February 23, 2021, I made an announcement at debian-devel-announce about a new service that I configured for Debian: a debuginfod server. This post serves two purposed: pay the promise I made to Jonathan Carter that I would write a blog post about the service, and go into a bit more detail about it. What’s debuginfod? From the announcement above: debuginfod is a new-ish project whose purpose is to serve ELF/DWARF/source-code information over HTTP.

Installing Gerrit and Keycloak for GDB

Back in September, we had the GNU Tools Cauldron in the gorgeous city of Montréal (perhaps I should write a post specifically about it…). One of the sessions we had was the GDB BoF, where we discussed, among other things, how to improve our patch review system. I have my own personal opinions about the current review system we use (mailing list-based, in a nutshell), and I haven’t felt very confident to express it during the discussion.

Improve gcore and support dumping ELF headers

Back in 2016, when life was simpler, a Fedora GDB user reported a bug (or a feature request, depending on how you interpret it) saying that GDB’s gcore command did not respect the COREFILTER_ELF_HEADERS flag, which instructs it to dump memory pages containing ELF headers. As you may or may not remember, I have already written about the broader topic of revamping GDB’s internal corefile dump algorithm; it’s an interesting read and I recommend it if you don’t know how Linux (or GDB) decides which mappings to dump to a corefile.

Debian Bug Squashing Party, Toronto version

Heya! This past Saturday, April 27th, 2019, Samuel Vale, Alex Volkov and I organized the Toronto Bug Squashing Party here in the city. I was very happy with the outcome, especially the fact that we had more than 10 people attending, including a bunch of folks that came from Montréal! The start It was a cold day in Toronto, and we met at the Mozilla Toronto office at 9 in the morning.


Às vezes, é preciso combater. É preciso dizer que o outro está errado, que ele está falando besteira sobre um assunto que não conhece (e não quer conhecer). É preciso dizer o que é ético, o que é certo. É preciso discernir tudo o que é errado e anti-ético, imoral, e que faz mal. É preciso combater o ódio, muitas vezes com amor, outras tantas com força e integridade. É preciso falar praquele ignorante que ele não sabe o que é Software Livre.

Memory mappings, core dumps, GDB and Linux

After spending the last weeks struggling with this, I decided to write a blog post. First, what is “this” that you are talking about? The answer is: Linux kernel’s concept of memory mapping. I found it utterly confused, beyond my expectations, and so I believe that a blog post is the write way to (a) preserve and (b) share this knowledge. So, let’s do it! First things first First, I cannot begin this post without a few acknowledgements and “thank you’s”.

Fazendo a Diferença

Deu saudade de escrever em português :-). E deu saudade, também, de fazer algum post mais “filosófico”. Não sei dizer o porquê, mas às vezes tenho uma mania besta: gosto de ficar procurando “sarna pra me coçar”. Em outras palavras, eu fico procurando coisas que me deixam mal, mesmo sabendo que vou ficar mal depois de vê-las. Não tenho explicação pra esse comportamento. É algo meio sabotador, meio sofredor, meio… Não sei.

The GNU Radical

A friend of mine, Blaise, once told me not to introduce myself as “… what you would call a radical…”. He had listened to me talking to a person who were questioning what a Free Software activist does. My friend’s rationale, to which I totally agree, is that you must let the other person decide whether she thinks you are a “radical” or not. In other words, if you say you are a “radical” from the beginning, it will probably induce the other person to a pre-judgement about you, which is not good for you and for her.

Respectful Software

To what extent should Free Software respect its users? The question, strange as it may sound, is not only valid but also becoming more and more important these days. If you think that the four freedoms are enough to guarantee that the Free Software will respect the user, you are probably being oversimplistic. The four freedoms are essential, but they are not sufficient. You need more. I need more. And this is why I think the Free Software movement should have been called the Respectful Software movement.

Fedora on an Acer C720P Chromebook

Yes, you are reading correctly: I decided to buy a freacking Chromebook. I really needed a lightweight notebook with me for my daily hackings while waiting for my subway station, and this one seemed to be the best option available when comparing models and prices. To be fair, and before you throw me rocks, I visited the LibreBoot X60’s website for some time, because I was strongly considering buying one (even considering its weight); however, they did not have it in stock, and I did not want to wait anymore, so…

Encrypting your e-mails to yourself using GnuPG

It has been a while since I dream of being able to send encrypted e-mail to everyone in my contact list. It is still a distant future, but fortunately it is getting closer with campaigns like the Reset the Net. And while I already send encrypted messages to a couple of friends, it is always good to discover (and share!) some configuration tips to make your life easy :-). I use Gnus as my e-mail (and news!

FISL 15: Impressões, opiniões e discussões

Após quase 1 mês, cá estou pra compartilhar minhas impressões a respeito do FISL 15, que aconteceu em Porto Alegre, RS, entre os dias 7 e 10 de Maio de 2014. Antes de mais nada, gostaria de fazer um pequeno “jabá”. Acho que mereço, por conta do trabalho que tive pra fazer isso (já explico) dar certo! Estou falando da palestra do Diego Aranha, que foi um dos destaques dessa edição do evento.

Being Permissive, the new Popular

This post is massively inspired by a post in the gnu-prog-discuss mailing list. This is a closed list of the GNU Project, and only GNU maintainers and contributors can join, so I cannot put a link to the original message (by Mike Gerwitz), but this topic is being discussed over and over again at many places, so you will not have trouble finding similar opinions. I am also “responding” to a recent discussion that I had with Luiz Izidoro, which is a “friend” (as he himself likes to say) of the LibrePlanet São Paulo group.

Zeladores da Coerência

Sei que ainda estou devendo um post sobre minha participação no FISL 15, mas o tempo anda meio curto pra falar tudo o que eu quero. Tenho decidido falar de maneira mais “picada”, até pra não fazer o texto ficar muito chato. E esse post aqui é sobre um comportamento que vejo há algum tempo, mas que foi exacerbado por conta do debate sobre a suposta morte do movimento Software Livre no Brasil.

Privacy as a Collective Good

It has been a while since I wanted to write about this subject. At many presentations that I gave during these last 2 years, I used the expression in the title in order to try to raise more awareness about why we should take care of our privacy (and maybe everyone’s). But what does it really mean? First of all, this article is not a copy of Benjamin Mako’s Google Has Most of My Email Because It Has All of Yours.

Migrating from Jabberd2 to Prosody

After trying (and failing!) to find a guide, how-to, or anything that could help me in the migration from Jabberd2 to Prosody on my personal server, I decided to write my own version here. I hope it can help other people who want to do this somewhat painful procedure! Struggling with Jabberd2 When I installed my personal server, I chose Jabberd2 as my Jabber server. At that time, this choice seemed the most logical to me because of a few reasons:

A Droga do Crédito

É uma droga querer crédito por algo. Alguns dizem que é seu direito, dado que você efetivamente tenha feito aquilo pelo qual está pedindo crédito; por outro lado, pessoas com almas supostamente mais evoluídas nos ensinam que o prazer em se fazer algo está contido no ato de fazê-lo, e não no crédito que nos é dado após a realização da tarefa. Quem está certo? O que funciona pra você?

Reflexões de um ativista -- Parte 02

Ainda não sei se estou preparado pra enfrentar a segunda parte dessa “série”, mas também não adianta fugir… O que eu sei é que essas reflexões podem não ser condizentes com a realidade (ou com a sua realidade), e que talvez eu esteja exagerando (ou aliviando) nas minhas observações, mas em todo caso eu espero que seja possível para você, querido leitor, traçar alguns paralelos com o seu modo de ver o mundo, e, quem sabe, mudar algo na sua região.