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consensus/ethash: verbose output on mixhash errror

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This commit is contained in:
Martin Holst Swende 2020-01-16 10:03:24 +01:00
parent feda78e052
commit bf15e31b79
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GPG key ID: 683B438C05A5DDF0
1 changed files with 13 additions and 3 deletions
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16
consensus/ethash/consensus.go
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@ -20,6 +20,7 @@ import (
"bytes" "bytes"
"errors" "errors"
"fmt" "fmt"
"github.com/ethereum/go-ethereum/log"
"math/big" "math/big"
"runtime" "runtime"
"time" "time"
@ -532,21 +533,30 @@ func (ethash *Ethash) verifySeal(chain consensus.ChainReader, header *types.Head
} }
} }
// If slow-but-light PoW verification was requested (or DAG not yet ready), use an ethash cache // If slow-but-light PoW verification was requested (or DAG not yet ready), use an ethash cache
var ctx []interface{}
if !fulldag { if !fulldag {
cache := ethash.cache(number) cache := ethash.cache(number)
ctx = append(ctx, "number", number)
size := datasetSize(number) size := datasetSize(number)
if ethash.config.PowMode == ModeTest { if ethash.config.PowMode == ModeTest {
size = 32 * 1024 size = 32 * 1024
} }
digest, result = hashimotoLight(size, cache.cache, ethash.SealHash(header).Bytes(), header.Nonce.Uint64()) ctx = append(ctx, "datasetSize", size)
nonce := header.Nonce.Uint64()
ctx = append(ctx, "hdr.nonce", nonce)
sealHash := ethash.SealHash(header).Bytes()
ctx = append(ctx, "sealHash", sealHash)
digest, result = hashimotoLight(size, cache.cache, sealHash, nonce)
ctx = append(ctx, "result", result)
// Caches are unmapped in a finalizer. Ensure that the cache stays alive // Caches are unmapped in a finalizer. Ensure that the cache stays alive
// until after the call to hashimotoLight so it's not unmapped while being used. // until after the call to hashimotoLight so it's not unmapped while being used.
runtime.KeepAlive(cache) runtime.KeepAlive(cache)
} }
// Verify the calculated values against the ones provided in the header // Verify the calculated values against the ones provided in the header
if !bytes.Equal(header.MixDigest[:], digest) { if !bytes.Equal(header.MixDigest[:], digest) {
ctx = append(ctx, "digest", digest)
ctx = append(ctx, "hdr.digest", header.MixDigest[:])
log.Error("Invalid mix digest", ctx...)
return errInvalidMixDigest return errInvalidMixDigest
} }
target := new(big.Int).Div(two256, header.Difficulty) target := new(big.Int).Div(two256, header.Difficulty)