[29.x] Backports #33074

1. 
   fanquake commented at 9:30 am on July 28, 2025: member

   Backports:

   • #33070
   • #33073
   • #33086
2. doc/zmq: fix unix socket path example

   Following https://github.com/bitcoin/bitcoin/blob/75a5c8258ec5309fe506438aa3815608430b53d6/doc/release-notes/release-notes-28.0.md?plain=1#L105
   
   Github-Pull: #33070
   Rebased-From: e83699a626b8a41c8fb9d0450e14e06a29a98bb8

   3cd8612cd7
3. fanquake added this to the milestone 29.1 on Jul 28, 2025
4. DrahtBot added the label Backport on Jul 28, 2025
5. 
   DrahtBot commented at 9:30 am on July 28, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33074.

   Reviews

   See the guideline for information on the review process. A summary of reviews will appear here.

6. tracing: fix pointer argument handling in mempool_monitor.py

   The BPF code was incorrectly passing pointer variables by value to
   bpf_usdt_readarg(), causing the function to fail silently and resulting
   in transaction hashes and reason strings displaying as zeros or garbage.
   
   This fix adds the missing reference operator (&) when passing pointer
   variables to bpf_usdt_readarg(), allowing the function to properly
   write the pointer values and enabling correct display of transaction
   hashes and removal/rejection reasons.
   
   Fixes the regression introduced in ec47ba349d where bpf_usdt_readarg_p
   was replaced with bpf_usdt_readarg but the calling convention wasn't
   properly updated for pointer arguments.
   
   Github-Pull: #33086
   Rebased-From: 0ce041ea88dbea2bdfaf21fd0e60a86012498f0a

   9437415024
7. fanquake force-pushed on Jul 29, 2025
8. guix: warn SOURCE_DATE_EPOCH set in guix-codesign

   Currently there is a warning for this in guix-build, but we also need
   one in guix-codesign, otherwise the codesigned hashes are not
   reproducible.
   
   Move common functionality into prelude and call the function in both
   guix actions.
   
   Github-Pull: #33073
   Rebased-From: 1bed0f734b3f2dd876193b5cad303bfab1d250d5

   a18b53f99e
9. fanquake force-pushed on Jul 29, 2025
10. doc: Add rel note for breaking change in dumptxoutset RPC

    This was missed in the v29.0 release notes.

    264418f80c
11. doc: update release notes for 29.x 57f94ad799
12. fanquake force-pushed on Jul 30, 2025

Contributors
fanquake DrahtBot

Labels
Backport

Milestone
29.1