Bundler gives weird PVG in Base Sepolia

[ChiHaoLu]

Hi, I use the alchemy bundler on base sepolia, but the preVerificationGas returned by the estimateUserOpGas is weird.

[JsonRpcProvider][eth_estimateUserOperationGas][request] {"jsonrpc":"2.0","id":0,"method":"eth_estimateUserOperationGas","params":[{"sender":"0x0EE0f30D493EDd5B2217758A373fF9158cd6117f","nonce":"0x0","callData":"...","factory":"0xdbb6b4e7f1aa9260fc9a7c4a7dffafd67307f30d","factoryData":"...","callGasLimit":"0x0","verificationGasLimit":"0x0","preVerificationGas":"0x0","maxFeePerGas":"0x1","maxPriorityFeePerGas":"0x1","paymasterVerificationGasLimit":"0x0","paymasterPostOpGasLimit":"0x0","signature":"0x8bba51258e2b369ddc9015b3f5fdd58e63bea7a4fffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}
[JsonRpcProvider][eth_estimateUserOperationGas][response] {
  "jsonrpc": "2.0",
  "id": 0,
  "result": {
    "preVerificationGas": "0x203695d211d71",
    "callGasLimit": "0x7ebb8",
    "verificationGasLimit": "0x6ed09",
    "paymasterVerificationGasLimit": null
  }
}

If I send this userOp to bundler, the precheck will failed due to balance too low.

[JsonRpcProvider][eth_sendUserOperation][request] {"jsonrpc":"2.0","id":0,"method":"eth_sendUserOperation","params":[{"sender":"0x0EE0f30D493EDd5B2217758A373fF9158cd6117f","nonce":"0x0","callData":"...","factory":"0xdbb6b4e7f1aa9260fc9a7c4a7dffafd67307f30d","factoryData":"...","callGasLimit":"0x7ebb8","verificationGasLimit":"0x6ed09","preVerificationGas":"0xf23f","maxFeePerGas":"0xf43a9","maxPriorityFeePerGas":"0x3b9aca00","paymasterVerificationGasLimit":"0x0","paymasterPostOpGasLimit":"0x0","signature":"0x8bba51258e2b369ddc9015b3f5fdd58e63bea7a4e10a76129b66d0d6b71c7ff745a9d269274cfb9329a88fe84719edae913e56b10a8fa31244c6f250388494f4b51229022a80b65cd7ff0ef5fde0a3d485e844451c"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}
Error: {
  "jsonrpc": "2.0",
  "id": 0,
  "error": {
    "code": -32000,
    "message": "precheck failed: sender balance and deposit together is 50000000000000000 but must be at least 418632732358755665202 to pay for this operation"
  }
}

[ChiHaoLu]

My re-produce userOp w/out truncated for estimateUserOperationGas on Base Sepolia:

{"sender":"0x15Cecd4Faa5AFc8541551517a2D5107FaC8C8F3A","nonce":"0x0","callData":"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","factory":"0x8a13a014160b197124d38db4a5e2395ce2ccf584","factoryData":"0x4d44ac280000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000a4cf7a1d770000000000000000000000000000000071727de22e5e9d8baf0edac6f37da0320000000000000000000000005b18e08847b532ea79b91ef0dee15ecc1a4ea24d000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000200000000000000000000000004d7f573039fddc84fdb28515ba20d75ef6b987ff00000000000000000000000000000000000000000000000000000000","callGasLimit":"0x0","verificationGasLimit":"0x0","preVerificationGas":"0x0","maxFeePerGas":"0x1","maxPriorityFeePerGas":"0x1","paymasterVerificationGasLimit":"0x0","paymasterPostOpGasLimit":"0x0","signature":"0x5b18e08847b532ea79b91ef0dee15ecc1a4ea24dfffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c"}

Alchemy Bundler response:

[JsonRpcProvider][eth_estimateUserOperationGas][response] {
  "jsonrpc": "2.0",
  "id": 0,
  "result": {
    "preVerificationGas": "0x7271e8c5b",
    "callGasLimit": "0x85bb8",
    "verificationGasLimit": "0x6ec84",
    "paymasterVerificationGasLimit": null
  }
}

[ChiHaoLu]

The Optimism Sepolia also has the same high PVG problem:

[JsonRpcProvider][eth_estimateUserOperationGas][request] {"jsonrpc":"2.0","id":0,"method":"eth_estimateUserOperationGas","params":[{"sender":"0x7B3f300ed3bE61879bf1E9aeB935341E88DC0A68","nonce":"0x0","callData":"0xe9ae5c53010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000620000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000028000000000000000000000000000000000000000000000000000000000000004600000000000000000000000007b3f300ed3be61879bf1e9aeb935341e88dc0a68000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000184d64db8fc0000000000000000000000004b982825763c95d9bd79b3ab5534a59cb94f09d10000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000012000000000000000000000000033f5db900080719118ee0b88df6835afa2eb8339000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a40fd8377b000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000130000000000000000000000000000000000000000000000000000000000000024c4d66de80000000000000000000000007b3f300ed3be61879bf1e9aeb935341e88dc0a680000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004b982825763c95d9bd79b3ab5534a59cb94f09d10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000001443f707e6b0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000200000000000000000000000005fd84259d66cd46123540766be93dfe6d43130d7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000044095ea7b3000000000000000000000000366359adf61b97b011825bb7816f8c061027502f0000000000000000000000000000000000000000000000000000000023c3460000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004b982825763c95d9bd79b3ab5534a59cb94f09d10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000e43f707e6b0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000200000000000000000000000004d7f573039fddc84fdb28515ba20d75ef6b987ff0000000000000000000000000000000000000000000000000000b5e620f480000000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000","factory":"0x8a13a014160b197124d38db4a5e2395ce2ccf584","factoryData":"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","callGasLimit":"0x0","verificationGasLimit":"0x0","preVerificationGas":"0x0","maxFeePerGas":"0x1","maxPriorityFeePerGas":"0x1","paymasterVerificationGasLimit":"0xc350","paymasterPostOpGasLimit":"0x124f8","paymaster":"0x366359adf61b97b011825bb7816f8c061027502f","paymasterData":"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","signature":"0x5b18e08847b532ea79b91ef0dee15ecc1a4ea24dfffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}

Alchemy bundler's response:

[JsonRpcProvider][eth_estimateUserOperationGas][response] {
  "jsonrpc": "2.0",
  "id": 0,
  "result": {
    "preVerificationGas": "0x153cb1782f3",
    "callGasLimit": "0x8dbb8",
    "verificationGasLimit": "0x6177f",
    "paymasterVerificationGasLimit": "0x68f7"
  }
}

If I change the PVG by myself, the bundler won't receive my userOp:

Error: {
  "jsonrpc": "2.0",
  "id": 0,
  "error": {
    "code": -32000,
    "message": "precheck failed: preVerificationGas is 644600 but must be at least 655927"
  }
}

[0xfourzerofour]

@ChiHaoLu there are not sdk issues, could you please create an issue in the bundler repo

https://github.com/alchemyplatform/rundler

OP stack chains are known to have this issue which is documented here

https://www.alchemy.com/blog/l2-gas-and-signature-aggregators#optimism-edge-case

This is why on op stack chains you should leave the gas fields as empty so that the bundler can estimate the correct values for you. as the response is proportionate to the input values