Validators crashing and not producing new blocks ERROR : "out of gas"

[ex-shubham-koli]

Earlier today all my validators crashed and all of them are showing the following logs. I have 8 validator setup on AWS. with 4 Validators created at first and then 4 added later via smart contract. (all BLS supported)

My env
Polygon edge v0.6
Ubuntu 20

0|node7 | 2022-10-12T10:04:41.030Z [INFO] polygon.blockchain: genesis: hash=0x4a5151d9bab06e1da34f05efc5e91c361ce33a58515ea19b21ca7d67c4893c38
0|node7 | out of gas

any idea why am I getting this error? any help is appreciated.

[laviniat1996]

Hi @shubham-edx ,

Did that error happen out of nowhere or after you did a certain action? Was your chain running fine until this error, and since when was it running?

Also, the full logs would be very apreciated. Thank you.

[ex-shubham-koli]

Yes while creating the genesis file I have set --block-gas-limit 1000000000.

[laviniat1996]

@shubham-edx Can you please tell me what's your price-limit? I'm trying to replicate this on my end.

[ex-shubham-koli]

I am not sure if I have setup any price limit variable manually. perhaps you mean gas limit?
this is my genesis file.

{
"name": "Testnet",
"genesis": {
"nonce": "0x0000000000000000",
"timestamp": "0x0",
"extraData": "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",
"gasLimit": "0x3b9aca00",
"difficulty": "0x1",
"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"coinbase": "0x0000000000000000000000000000000000000000",
"alloc": {
"0x0000000000000000000000000000000000001001": {
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"0xd18907825ac0235ec6bc3dcbb934d6470164e029a74904284a23d1d111afeddb": "0x7bf8f99a6195be97c7fc451e1a5f219900000000000000000000000000000000",
"0xdde29a361831b2b14b4ec3d45277b56a5a3b297fdfa47d686535e87a42c02cb5": "0x0000000000000000000000000000000000000000000000000000000000000001",
"0xe0271979868ea4ea2a03969d7d415f165b30f8327bd11db2a229214c01b8b09f": "0x0000000000000000000000000000000000000000000000000000000000000061",
"0xecbe740014af985f3c2a23449e858aa9b9ef0ea794251280778dc2e2fd202a46": "0x0000000000000000000000000000000000000000000000008ac7230489e80000",
"0xf54e14d24600bfb7e32d59db68be11bfa11ab7cbca8286a041f028dbd3f20183": "0x974d2462b5cd9016c31cf80cb4c094c940e51be6fefd1b503e160845d756e269",
"0xf54e14d24600bfb7e32d59db68be11bfa11ab7cbca8286a041f028dbd3f20184": "0x50b58a2e3c1d905ee76609842754354600000000000000000000000000000000",
"0xfc634297989d2c5322da8b09e44b26cd939f258244c2978bddaf3b6c52966f3d": "0x912a08ee3d05df723fb3b6f0df41b648212f09dff3213b2d310262fab9342bff",
"0xfc634297989d2c5322da8b09e44b26cd939f258244c2978bddaf3b6c52966f3e": "0x3b451cedaceddd0e1f60bd248c04862b00000000000000000000000000000000"
},
"balance": "0x22b1c8c1227a00000"
},
"0x42b8d75b02dF61Bb9c11159c4902d1Ea34BaDacd": {
"balance": "0x204fce5e3e25026110000000"
}
},
"number": "0x0",
"gasUsed": "0x70000",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"params": {
"forks": {
"homestead": 0,
"byzantium": 0,
"constantinople": 0,
"petersburg": 0,
"istanbul": 0,
"EIP150": 0,
"EIP158": 0,
"EIP155": 0
},
"chainID": 1995,
"engine": {
"ibft": {
"epochSize": 100,
"type": "PoS",
"validator_type": "bls"
}
},
"blockGasTarget": 0
},
"bootnodes": [
"/ip4//tcp/1478/p2p/16Uiu2HAmNm9G7pY3aouwTjyHksdwRp5nW3LJWT8mnyhwajtK1Dqf",
"/ip4//tcp/2478/p2p/16Uiu2HAmUxdEopRRPV9PGWfq2p89pHXYfSPCxowCcxeDStQxF7EH",
"/ip4//tcp/1478/p2p/16Uiu2HAm7Y6vKzK5wVTWhvatu4B2GUqCzFmp4Gvr28KU7G6EDbzA",
"/ip4//tcp/2478/p2p/16Uiu2HAmPgQWfZWTtJhziU3WKGsTnRevNWioF4M3yfwAwNhFt9wk",
"/ip4//tcp/1478/p2p/16Uiu2HAmMAG4YVt55AKaJedmnnrTvNUnR68jV8VTaj1eU5jFSVmi",
"/ip4//tcp/2478/p2p/16Uiu2HAmHQvSGoB2GezZdHkCwyiX6mA53RN8B9SBZtP2CTTcHCVG",
"/ip4//tcp/1478/p2p/16Uiu2HAm7D7eB3nTBo5zMdJcbJNYXbrkiSWBX8iDCj7efERNYbjf",
"/ip4//tcp/2478/p2p/16Uiu2HAmMBRY64fh2wB5vrw42zeFM5fR5LrfwvRiXbDkHhakZXW1"
]
}

[laviniat1996]

@shubham-edx Hi, thank you very much for reporting this. After discussing the issue with the team, we found the root of it. There is a transaction made for fetching the validator set from the contract each epoch. This transaction is not made by the user, it's created locally and executed.
The gas limit for this transaction is:

// Gas limit used when querying the validator set
queryGasLimit uint64 = 100000

This is too small to execute that transaction when you have too many validators (by the way, in the logs it shows that you have 10 validators actually validators=10 committed=7).

We are working on a solution for this problem.

What I will kindly ask you is to open up an issue regarding this, where we will keep you updated.

[ex-shubham-koli]

okay, thanks for the help. I have created an issue for this.