fix(executor): account for tip when computing max L2 gas limit#3346
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AvivYossef-starkware wants to merge 1 commit intoequilibriumco:mainfrom
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fix(executor): account for tip when computing max L2 gas limit#3346AvivYossef-starkware wants to merge 1 commit intoequilibriumco:mainfrom
AvivYossef-starkware wants to merge 1 commit intoequilibriumco:mainfrom
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The max L2 gas amount covered by balance was computed by dividing the remaining balance by `max_price_per_unit`. However, the blockifier's `max_possible_fee` multiplies by `(max_price_per_unit + tip)`. When the tip is non-zero, this mismatch causes the inflated L2 gas bound to exceed the account balance, rejecting transactions that succeed on-chain. Fix: divide by `(max_price_per_unit + tip)` to match the blockifier's fee calculation. Observed on mainnet block 8821583 (tx index 1) where tip=1001 caused the balance check to fail by ~128 trillion FRI.
Contributor
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just a general question, maybe you'll know, why is the tip accounted per gas unit? From the docs I can see it is correct, but |
zvolin
approved these changes
Apr 17, 2026
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Account for the tip when computing the maximum L2 gas amount covered by the account balance during fee estimation.
Problem:
get_max_l2_gas_amount_covered_by_balancedivides remaining balance byl2_gas.max_price_per_unitto compute the max affordable L2 gas. However, the blockifier'smax_possible_fee(used inverify_can_pay_committed_bounds) computesmax_amount * (max_price + tip). When tip > 0, the inflated L2 gas bound exceeds the account balance, causingstarknet_simulateTransactionsto reject transactions that succeeded on-chain.Fix: Divide by
(max_price_per_unit + tip)to match the blockifier's fee calculation.Impact: Observed on mainnet block 8821583 (tx index 1, tip=1001). The old formula computed
max_l2_gas = 128,174,880,959. The blockifier then checked128,174,880,959 * (60,200,000,000 + 1001) = 7.716T > balance of 7.716T— failing by ~128 trillion FRI due to the unaccounted tip. The fix computesmax_l2_gas = 128,174,878,828which passes the balance check.Note: Juno has the same bug in
calculate_max_l2_gas_covered(vm/rust/src/entrypoint/execute/process/binary_search_execution.rs:201).CHANGELOG.md