fuzz: gate mempool entry based on weight #33985

1. 
   instagibbs commented at 3:24 pm on December 1, 2025: member

   The mempool implementation now uses TxGraph with entries using FeePerWeight, not vsize. This means our package_rbf harness will erroneously add more transaction weight than we can support inside of FeeFrac. Gate more aggressively using WITNESS_SCALE_FACTOR.

   Fixes https://github.com/bitcoin/bitcoin/issues/33981

2. DrahtBot added the label Tests on Dec 1, 2025
3. 
   DrahtBot commented at 3:24 pm on December 1, 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/33985.

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4. fuzz: gate mempool entry based on weight

   The mempool implementation now uses TxGraph with entries
   using FeePerWeight, not vsize. This means our package_rbf
   harness will erroneously add more transaction weight than we
   can support inside of FeeFrac. Gate more aggressively using
   WITNESS_SCALE_FACTOR.

   804329400a
5. instagibbs force-pushed on Dec 1, 2025
6. maflcko added this to the milestone 31.0 on Dec 1, 2025
7. DrahtBot added the label CI failed on Dec 1, 2025
8. 
   instagibbs commented at 3:30 pm on December 1, 2025: member

   cc @sdaftuar
9. DrahtBot removed the label CI failed on Dec 1, 2025
10. 
    sdaftuar commented at 6:26 pm on December 1, 2025: member

    Looks right to me, and I was able to generate a fuzz crash on master that was fixed by this PR. Going to continue fuzzing for a bit to see if there are any other issues.

Contributors
instagibbs DrahtBot sdaftuar

Labels
Tests

Milestone
31.0