Toots for mjw@mastodon.nl account

Written by mjw on 2025-01-22 at 11:18

Monitor #GCC compile time by Andrew MacLeod.

https://developers.redhat.com/articles/2025/01/22/monitor-gcc-compile-time

Explaining how to use #valgrind callgrind for profiling and analyzing your program runtime behavior.

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Written by mjw on 2025-01-14 at 21:47

@conservancy Fundraiser is going for one more day!

https://sfconservancy.org/sustainer/

Please help them get past their goal.

Their small team does so much for Software Freedom. They help ship user respecting hardware like the OpenWrt One. Enforce copyleft compliance when necessary. Run @outreachy Organize the https://fossy.us conference. And are the fiscal sponsor of lots of Free Software projects https://sfconservancy.org/projects/current (too many to list in just 500 chars).

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Written by mjw on 2025-01-14 at 18:10

Debuginfod project update 2024 by Aaron Merey

https://developers.redhat.com/articles/2025/01/14/debuginfod-project-update-2024

• Metrics and scale of debuginfod servers #prometheus

• New tools and features in debuginfod #elfutils

• IMA verification support

• Addressing kernel VDSO extraction bottlenecks @osandov

• Lazy debug info downloading in #Valgrind and #GDB

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Written by mjw on 2025-01-11 at 16:33

Darn it. Half a year later we are drowning in bugs again. We managed to close 67 bugs, but 99 new bugs were reported. So we are sitting on 1000+ open bugs again for #valgrind Please help...

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Written by mjw on 2025-01-01 at 17:06

Supporting Software Freedom Conservancy in 2025

https://gnu.wildebeest.org/blog/mjw/2025/01/01/supporting-software-freedom-conservancy-in-2025/

The @conservancy Fundraiser runs for another 2 weeks. Please become a Sustainer, renew your existing membership or donate before January 15th to maximize your contribution to furthering the goals of software freedom!

https://sfconservancy.org/sustainer/

They have been a great partner to @sourceware putting users, developers and community first.

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Written by mjw on 2024-11-08 at 21:42

Please don't "fix" bzip2 CVE-2019-12900

https://inbox.sourceware.org/bzip2-devel/20241108214034.GC8315@gnu.wildebeest.org/

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Written by mjw on 2024-11-08 at 21:28

There is this 5 year old CVE against bzip2 which turned out to be bogus. The long story: https://gnu.wildebeest.org/blog/mjw/2019/08/02/bzip2-and-the-cve-that-wasnt/

But probably because NVD gave this a 9.8 critical score (!) some enterprise distros are "fixing" this CVE now by "backporting" a broken fix to bzip2 1.0.6 instead of upgrading to a release with a proper fix (bzip2 1.0.8)...

https://gitlab.com/redhat/centos-stream/rpms/bzip2/-/commit/f9ed8e44ad56a1dd655d33dff7ad2344c71e91cf

So now at least rhel-8, alma-8 and ol8 are shipping with a broken bzip2. Sigh.

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Written by mjw on 2024-11-01 at 21:04

[#]valgrind 3.24.0 released!

https://valgrind.org/docs/manual/dist.news.html

Sourceware download: https://valgrind.org/downloads/current.html#current

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Written by mjw on 2024-10-29 at 16:31

debugedit 5.1 released

• Architecture support for hppa and loongarch

• Switch to xxhash for buildid recomputation (much faster!). Thanks @fche

• find-debuginfo supports -v,--verbose and -q,--quiet

• find-debuginfo passes -j down to dwz

• debugedit now handles DWARF5 DW_UT_type (Unit type 2) in ET_EXE/DYN, DW_MACRO_{define,undef}_strx, .debug_str_offsets (DW_FORM_strx)

• debugedit handles compressed DWARF debug sections. Thanks @Foxboron

https://inbox.sourceware.org/debugedit/6e1b9065bc299153208e2d41140b78e81c1890b5.camel@klomp.org/

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Written by mjw on 2024-10-27 at 10:25

I hope the OSI board will consider the opinion of the FSF, Debian and Conservancy before approving the OSAID. It would be bad IMHO if the OSI definition of Open Source AI systems would clash with those of the organizations on which the Open Source definition was originally based.

@osi @Ammienoot @cra @gblondelle @carlopiana @fuzzychef @pchestek @eSayeed @tcarrez

https://lwn.net/Articles/995159/

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Written by mjw on 2024-10-27 at 09:55

Software Freedom Conservancy Statement on LLM-backed generative AI

https://sfconservancy.org/news/2024/oct/25/aspirational-on-llm-generative-ai-programming/

All training data should be fully identified, and available freely and publicly on the Internet, under a FOSS license.

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Written by mjw on 2024-10-24 at 15:16

Some of the tricks that were needed to support x86-64-v3 in #valgrind memcheck:

https://developers.redhat.com/articles/2024/10/24/preparing-valgrind-memcheck-x86-64-v3

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Written by mjw on 2024-09-19 at 11:50

Uploaded the slides for the Cauldron "Using the Valgrind error manager for file descriptor tracking" talk I did together with Alexandra.

https://gcc.gnu.org/wiki/cauldron2024talks?action=AttachFile&do=get&target=valgrind-cauldron24.pdf

https://gcc.gnu.org/wiki/cauldron2024#cauldron2024talks.using_the_valgrind_error_manager_for_file_descriptor_tracking

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