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fix: (A-643) add buffer to maxFeePerBlobGas for gas estimation and fix bump loop truncation #21323

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PhilWindle merged 1 commit intomerge-train/spartanfrom
danielntmd/fix-max-gas-fee-error
Mar 11, 2026
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fix: (A-643) add buffer to maxFeePerBlobGas for gas estimation and fix bump loop truncation #21323
PhilWindle merged 1 commit intomerge-train/spartanfrom
danielntmd/fix-max-gas-fee-error

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@danielntmd danielntmd commented Mar 10, 2026

The blob validateBlobs estimateGas call was intermittently failing with "max fee per blob gas less than block blob gas fee" because it computed a precise maxFeePerBlobGas that could go stale between the getBlobBaseFee RPC call and the estimateGas RPC call. Since gas estimation is a read-only, we now use a 2x buffer to pass EIP-4844 validation.

Also fix integer truncation in the base fee bump loop where ceil is needed to ensure fees increase at small values (e.g. 1 wei).

@danielntmd danielntmd changed the title fix: use ceil for recalculating maxFeePerGas and maxFeePerBlobGas fix: (A-643) use ceil for recalculating maxFeePerGas and maxFeePerBlobGas Mar 10, 2026
@danielntmd danielntmd marked this pull request as draft March 10, 2026 16:55
@danielntmd danielntmd force-pushed the danielntmd/fix-max-gas-fee-error branch from 0def120 to 1fbf9b1 Compare March 10, 2026 17:28
@danielntmd danielntmd marked this pull request as ready for review March 10, 2026 17:28
@danielntmd danielntmd changed the title fix: (A-643) use ceil for recalculating maxFeePerGas and maxFeePerBlobGas fix: (A-643) use passthrough maxFeePerBlobGas for gas estimation and fix bump loop truncation Mar 10, 2026
@danielntmd danielntmd force-pushed the danielntmd/fix-max-gas-fee-error branch 2 times, most recently from 19c0a7c to 5fc534c Compare March 10, 2026 18:18
@danielntmd danielntmd changed the title fix: (A-643) use passthrough maxFeePerBlobGas for gas estimation and fix bump loop truncation fix: (A-643) add buffer to maxFeePerBlobGas for gas estimation and fix bump loop truncation Mar 10, 2026
@PhilWindle PhilWindle requested a review from spypsy March 10, 2026 18:24
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Looks good! Maybe can add a simple unit test for the edge case

…oop truncation

The blob validateBlobs estimateGas call was intermittently failing with "max fee per blob gas less than block blob gas fee" because it computed a precise maxFeePerBlobGas that could go stale between the getBlobBaseFee RPC call and the estimateGas RPC call. Since gas estimation is a read-only, we now use a 2x buffer to pass EIP-4844 validation.

Also fix integer truncation in the base fee bump loop where ceil is needed to ensure fees increase at small values (e.g. 1 wei).
@danielntmd danielntmd force-pushed the danielntmd/fix-max-gas-fee-error branch from 5fc534c to 4b1e6cf Compare March 11, 2026 14:59
@PhilWindle PhilWindle merged commit be84f31 into merge-train/spartan Mar 11, 2026
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@PhilWindle PhilWindle deleted the danielntmd/fix-max-gas-fee-error branch March 11, 2026 16:30
AztecBot pushed a commit that referenced this pull request Mar 11, 2026
…x bump loop truncation (#21323)

The blob validateBlobs estimateGas call was intermittently failing with "max fee per blob gas less than block blob gas fee" because it computed a precise maxFeePerBlobGas that could go stale between the getBlobBaseFee RPC call and the estimateGas RPC call. Since gas estimation is a read-only, we now use a 2x buffer to pass EIP-4844 validation.

Also fix integer truncation in the base fee bump loop where ceil is needed to ensure fees increase at small values (e.g. 1 wei).
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✅ Successfully backported to backport-to-v4-staging #21355.

ludamad added a commit that referenced this pull request Mar 11, 2026
BEGIN_COMMIT_OVERRIDE
chore: chonk proof compression poc (#20645)
feat: Update L1 to L2 message APIs (#20913)
fix: adapt chonk proof compression for v4 Translator layout (#21067)
fix: omit bigint priceBumpPercentage from IPC config in testbench worker
(#21086)
feat: standby mode for prover broker (#21098)
fix(p2p): remove default block handler in favor of block handler
(#21105)
chore: prepare barretenberg-rs for crates.io publishing (#20496)
feat: reenable function selectors + additional validation in public
setup allowlist (backport #20909, #21122) (#21129)
chore: remove stale aes comments (#21133)
chore: remove auto-tag job (#21127)
feat: calldata length validation of public setup function allowlist
(#21139)
feat: run AVM NAPI simulations on dedicated threads instead of libuv
pool (#21138)
feat: Remove non-protocol contracts from public setup allowlist (#21154)
feat!: Expose offchain effects when simulating/sending txs (backport
#20563) (#21110)
chore: bump minor version (#21171)
chore: backport #21161 (tally slashing pruning improvements) to v4
(#21166)
chore: More updated Alpha configuration (backport #21155) (#21165)
fix(p2p): report most severe failure in runValidations (#21185)
feat: add ergonomic conversions for Noir's `Option<T>` (#21107)
docs: clarifying Noir fields vs struct fields in event metadata (#21172)
fix: bump lighthouse consensus client v7.1.0 -> v8.0.1 (#21170)
fix: update dependencies (#20997)
chore: New alpha-net environment (#20800) (#21202)
chore: code decuplication + refactor (public setup allowlist) (#21200)
feat: mask all ciphertext fields with Poseidon2-derived values (backport
#21009) (#21140)
chore: disable sponsored FPC in testnet (#21235)
feat!: exposing pub event pagination on wallet (#21197)
refactor(pxe): narrow tryGetPublicKeysAndPartialAddress return type
(backport #21208) (#21236)
feat: orchestrator enqueues via serial queue (#21247)
feat: rollup mana limit gas validation (#21219)
chore: deploy SPONSORED_FPC in test networks (#21254)
fix(sequencer): fix log when not enough txs (#21297)
fix: Simulate gas in n tps test. Set min txs per block to 1 (backport
#21312) (#21329)
fix(log): do not log validation error if unregistered handler (#21111)
fix(node): fix index misalignment in findLeavesIndexes (#21327)
fix: limit parallel blocks in prover to max AVM parallel simulations
(#21320)
fix: use native sha256 to speed up proving job id generation (#21292)
fix(validator): wait for l1 sync before processing block proposals
(#21336)
fix(txpool): cap priority fee with max fees when computing priority
(#21279)
chore: reduce severity of errors due to HA node not acquiring signature
(#21311)
fix: (A-643) add buffer to maxFeePerBlobGas for gas estimation and fix
bump loop truncation (#21323)
END_COMMIT_OVERRIDE
github-merge-queue bot pushed a commit that referenced this pull request Mar 11, 2026
BEGIN_COMMIT_OVERRIDE
fix: (A-623) increase committee timeout in scenario smoke test (#21193)
feat: orchestrator enqueues via serial queue (#21247)
feat: rollup mana limit gas validation (#21219)
fix: make e2e HA test more deterministic (#21199)
chore: fix chonk_browser lint warning (#21265)
chore: deploy SPONSORED_FPC in test networks (#21254)
fix: (A-635) e2e bot flake on nonce mismatch (#21288)
chore: deflake duplicate attestations and proposals slash tests (#21294)
fix(sequencer): fix log when not enough txs (#21297)
chore: send env var to pods (#21307)
fix: Simulate gas in n tps test. Set min txs per block to 1 (#21312)
fix: update dependabot dependencies (#21238)
test: run nightly bench of block capacity (#20726)
fix: update block_capacity test to use new send() result types (#21345)
fix(node): fix index misalignment in findLeavesIndexes (#21327)
fix(log): do not log validation error if unregistered handler (#21111)
fix: limit parallel blocks in prover to max AVM parallel simulations
(#21320)
fix: use native sha256 to speed up proving job id generation (#21292)
chore: remove v4-devnet-1 (#21044)
fix(validator): wait for l1 sync before processing block proposals
(#21336)
fix(txpool): cap priority fee with max fees when computing priority
(#21279)
chore: Properly compute finalized block (#21156)
fix: remove extra argument in KVArchiverDataStore constructor call
(#21361)
chore: revert l2 slot time 72 -> 36 on scenario network (#21291)
fix(archiver): do not error if proposed block matches checkpointed
(#21367)
fix(claude): rule to not append echo exit (#21368)
chore: reduce severity of errors due to HA node not acquiring signature
(#21311)
fix: make reqresp batch retry test deterministic (#21322)
fix: (A-643) add buffer to maxFeePerBlobGas for gas estimation and fix
bump loop truncation (#21323)
fix(e2e): use L2 priority fee in deploy_method same-block test (#21373)
fix: reqresp flake & add logging (#21334)
END_COMMIT_OVERRIDE
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