cosmos-sdk: Failed to slash a validator for double sign at the first block

Summary of Bug

When someone double signed at the first block, the slashing module will not handle it correctly.

Steps to Reproduce

When generating the first block, someone may double sign and trigger the slashing module. log:

Confirmed double sign from FDC8E91E2F361F4BFCCEFA80C1ABAD138E5175AE at height 1, age of 0 less than max age of 120 module=x/slashing 
E[09-21|13:27:34.653] CONSENSUS FAILURE!!!                         module=consensus err="impossible attempt to slash future infraction at height 1 but we are at height 0" stack="goroutine 1193 [running]:\nruntime/debug.Stack(0xc424c4cea0, 0xd5e1c0, 0xc426777690)\n\t/usr/lib/go-

For Admin Use

Not duplicate issue
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About this issue

Original URL
State: closed
Created 6 years ago
Comments: 19 (19 by maintainers)

Most upvoted comments

@cwgoes we did some analysis and figured out double-sign evidence was included in the first block, then got broadcasted. However, there’s mismatch to treat double-sign evidence. in tendermint the infractionHeight is 1 but when slashing module process the evidence, ctx.BlockHeight() is still 0. We tried to solve the issue with this PR: https://github.com/irisnet/cosmos-sdk/pull/109 Hope to get more input from you.

kidinamoto01 on Sep 23, 2018