Snowbridge Beacon header age check #3791
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## Bug Explanation Adds a check that prevents finalized headers with a gap larger than the sync committee period being imported, which could cause execution headers in the gap being unprovable. The current version of the Ethereum client checks that there is a header at least every sync committee, but it doesn't check that the headers are within a sync period of each other. For example: Header 100 (sync committee period 1) Header 9000 (sync committee period 2) (8900 blocks apart) These headers are in adjacent sync committees, but more than the sync committee period (8192 blocks) apart. The reason we need a header every 8192 slots at least, is the header is used to prove messages within the last 8192 blocks. If we import header 9000, and we receive a message to be verified at header 200, the `block_roots` field of header 9000 won't contain the header in order to do the ancestry check. ## Environment While running in Rococo, this edge case was discovered after the relayer was offline for a few days. It is unlikely, but not impossible, to happen again and so it should be backported to polkadot-sdk 1.7.0 (so that [polkadot-fellows/runtimes](https://github.com/polkadot-fellows/runtimes) can be updated with the fix). Our Ethereum client has been operational on Rococo for the past few months, and this been the only major issue discovered so far. ### Unrelated Change An unrelated nit: Removes a left over file that should have been deleted when the `parachain` directory was removed. --------- Co-authored-by: claravanstaden <Cats 4 life!>
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The CI pipeline was cancelled due to failure one of the required jobs. |
bkontur
approved these changes
Mar 22, 2024
acatangiu
approved these changes
Mar 22, 2024
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why is this draft? looks ready to merge to me |
Well #3790 isn't merged on master yet but I guess we can merge. |
acatangiu
merged commit 486c044
into
paritytech:release-crates-io-v1.7.0
25 of 79 checks passed
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#3790 wasn't cherry-picked into this branch yet. I'll make a new PR... |
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…nsure safety margins (paritytech#3791) This is a cherry-pick from master of paritytech#3727 and paritytech#3790 Expected patches for (1.7.0): snowbridge-pallet-ethereum-client snowbridge-pallet-inbound-queue snowbridge-pallet-outbound-queue snowbridge-outbound-queue-runtime-api snowbridge-pallet-system snowbridge-core
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Mar 25, 2024
…nsure safety margins (paritytech#3791) This is a cherry-pick from master of paritytech#3727 and paritytech#3790 Expected patches for (1.7.0): snowbridge-pallet-ethereum-client snowbridge-pallet-inbound-queue snowbridge-pallet-outbound-queue snowbridge-outbound-queue-runtime-api snowbridge-pallet-system snowbridge-core
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This is a cherry-pick from master of #3727 and #3790
Expected patches for (1.7.0):
snowbridge-pallet-ethereum-client