[29.x] *san CI backports #33294

1. 
   fanquake commented at 3:45 pm on September 3, 2025: member

   Backports:

   • #32999
   • #33099 (added ninja-build)
   • #33258
2. ci: Use APT_LLVM_V in msan task

   Also, use update-alternatives to avoid having to manually specify
   clang-${APT_LLVM_V} or llvm-symbolizer-${APT_LLVM_V} everywhere.
   
   Github-Pull: #32999
   Rebased-From: fad040a5787a8ac0a13aef5c54e5a675de239e92

   10cbf2255d
3. ci: allow libc++ instrumentation other than msan

   Github-Pull: #33099
   Rebased-From: 6653cafd0b70b0e7a29c6cfe236d3bf9d1bce91e

   0fba5ae021
4. DrahtBot added the label Backport on Sep 3, 2025
5. 
   DrahtBot commented at 3:45 pm on September 3, 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/33294.

   Reviews

   See the guideline for information on the review process.

   Type	Reviewers
   ACK	marcofleon

   If your review is incorrectly listed, please react with 👎 to this comment and the bot will ignore it on the next update.

   LLM Linter (✨ experimental)

   Possible typos and grammar issues:

   • intrumentation -> instrumentation [spelling error in release notes list item making the word invalid]

   drahtbot_id_5_m

6. ci: instrument libc++ in TSAN job

   Qt is disabled, as the build is now taking a very long time.
   
   Github-Pull: #33099
   Rebased-From: b09af2ce508185086bb551bfeb1409355c897e7b

   f9939cdbe0
7. ci: remove DEBUG_LOCKORDER from TSAN job

   Github-Pull: #33099
   Rebased-From: 7aa5b67132dfb71e915675a3dbcb806284e08197

   5513516241
8. ci: use LLVM 21

   Github-Pull: #33258
   Rebased-From: 4cf0ae474ba03830c86653f1abae4ab4d38c94e4

   ea40fa95d9
9. fanquake force-pushed on Sep 3, 2025
10. DrahtBot added the label CI failed on Sep 3, 2025
11. fanquake added this to the milestone 29.2 on Sep 3, 2025
12. DrahtBot removed the label CI failed on Sep 3, 2025
13. fanquake marked this as ready for review on Sep 4, 2025
14. fanquake requested review from willcl-ark on Sep 4, 2025
15. 
    willcl-ark commented at 7:32 pm on September 4, 2025: member

    Are you planning on adding these to release notes in this PR?
16. doc: update release notes for 29.x 7c6be9acae
17. 
    fanquake commented at 11:14 am on September 5, 2025: member

    Are you planning on adding these to release notes in this PR?

    Added a commit for that.

18. fanquake requested review from marcofleon on Sep 8, 2025
19. 
    marcofleon commented at 3:33 pm on September 8, 2025: contributor

    ACK 7c6be9acae5a16956a7f8e53ae3f944a187a6713, looks okay to me
20. fanquake merged this on Sep 8, 2025
21. fanquake closed this on Sep 8, 2025

    ---

22. fanquake deleted the branch on Sep 8, 2025

Contributors
fanquake DrahtBot willcl-ark marcofleon

Review Requested
willcl-ark

Labels
Backport

Milestone
29.2