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ethcore/light: fix deadlock caused by conflicting lock order #11768
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sorpaas
approved these changes
Jul 29, 2020
sorpaas
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M4-core ⛓
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Similar to #11766,
https://github.com/openethereum/openethereum/blob/f8cbdadfaaef30febbeab1ec5b7331a74ec7856a/ethcore/light/src/client/header_chain.rs#L824-L829
https://github.com/openethereum/openethereum/blob/f8cbdadfaaef30febbeab1ec5b7331a74ec7856a/ethcore/light/src/client/header_chain.rs#L744
https://github.com/openethereum/openethereum/blob/f8cbdadfaaef30febbeab1ec5b7331a74ec7856a/ethcore/light/src/client/header_chain.rs#L699
https://github.com/openethereum/openethereum/blob/f8cbdadfaaef30febbeab1ec5b7331a74ec7856a/ethcore/light/src/client/header_chain.rs#L410
https://github.com/openethereum/openethereum/blob/f8cbdadfaaef30febbeab1ec5b7331a74ec7856a/ethcore/light/src/client/header_chain.rs#L514
The fix is to move
live_proofsbelowancestry_iter. I am not very sure about this fix since it changes the critical section a lot.