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core/rawdb: prevent uint64 underflow

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Bashmunta 2025-11-28 12:13:23 +02:00 committed by GitHub
parent f691d661c4
commit 55283bd801
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GPG key ID: B5690EEEBB952194
1 changed files with 4 additions and 3 deletions
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7
core/rawdb/freezer_table.go
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@ -771,8 +771,9 @@ func (t *freezerTable) truncateTail(items uint64) error {
deleted = t.itemOffset.Load() deleted = t.itemOffset.Load()
) )
// Hidden items exceed the current tail file, drop the relevant data files. // Hidden items exceed the current tail file, drop the relevant data files.
for current := items - 1; current >= deleted; current -= 1 { for current := items; current > deleted; current-- {
if _, err := t.index.ReadAt(buffer, int64((current-deleted+1)*indexEntrySize)); err != nil { idx := current - 1
if _, err := t.index.ReadAt(buffer, int64((idx-deleted+1)*indexEntrySize)); err != nil {
return err return err
} }
var pre indexEntry var pre indexEntry
@ -780,7 +781,7 @@ func (t *freezerTable) truncateTail(items uint64) error {
if pre.filenum != newTailId { if pre.filenum != newTailId {
break break
} }
newDeleted = current newDeleted = idx
} }
// Close the index file before shorten it. // Close the index file before shorten it.
if err := t.index.Close(); err != nil { if err := t.index.Close(); err != nil {