Slasher prevents proposal

[stefa2k]

🐞 Bug Report

Description

Seems like slasher prevents proposal of all validators, not every time. Validator 2073 skipped a proposal because slasher prevented the proposal. https://beaconscan.com/slot/183839

Has this worked before in a previous version?

Yes

🔬 Minimal Reproduction

🔥 Error

Validator A:

time="2020-08-30 01:47:56" level=error msg="Failed post block signing validations" error="made a double proposal, considered slashable by remote slashing protection" prefix=validator pubKey=0x94e2aa11465b slot=183839

Validator B:

time="2020-08-30 01:47:56" level=error msg="Failed post block signing validations" error="made a double proposal, considered slashable by remote slashing protection" prefix=validator pubKey=0x94e2aa11465b slot=183839

Validator C:

time="2020-08-30 01:47:56" level=error msg="Failed post block signing validations" error="made a double proposal, considered slashable by remote slashing protection" prefix=validator pubKey=0x94e2aa11465b slot=183839

🌍 Your Environment

Operating System:

  
Ubuntu 20.04
  

What version of Prysm are you running? (Which release)

  
https://github.com/stefa2k/prysm-docker-compose with https://github.com/stefa2k/ansible-prysm/blob/master/eth2node-ha.yaml docker tag `:HEAD-78a25f`
  

[stefa2k]

same thing here: https://beaconcha.in/validator/2222#blocks with slot 187519

And external slashing protection didn't work with https://beaconcha.in/validator/2222 there is only one Failed block safety check of proposal (on 3 nodes) expected were 2 Failed block safety check.

There were only two time="2020-09-02 13:12:22" level=info msg="Received block via RPC" prefix=rpc proposer_index=2222 slot=208861 expected were 3. So one validator didn't submit their block to the external slashing protection and therefore didn't get blocked.

[rauljordan]

We have not been able to isolate this to slasher, and I believe @shayzluf has worked on this and has not found a correlation. Is it comes up and we have clear data about it, we can take further action