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wal: fix crc mismatch crash bug

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tangcong 2020-05-20 12:35:25 +08:00 committed by Gyuho Lee
parent cfe37de6c0
commit ed231df7c0
1 changed files with 8 additions and 0 deletions
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8
wal/wal.go
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@ -568,6 +568,14 @@ func ValidSnapshotEntries(lg *zap.Logger, walDir string) ([]walpb.Snapshot, erro
snaps = append(snaps, loadedSnap)
case stateType:
state = mustUnmarshalState(rec.Data)
case crcType:
crc := decoder.crc.Sum32()
// current crc of decoder must match the crc of the record.
// do no need to match 0 crc, since the decoder is a new one at this case.
if crc != 0 && rec.Validate(crc) != nil {
return nil, ErrCRCMismatch
}
decoder.updateCRC(rec.Crc)
}
}
// We do not have to read out all the WAL entries