From 55283bd801ca1a13e6d47cb2e2d55f854242a6f3 Mon Sep 17 00:00:00 2001 From: Bashmunta Date: Fri, 28 Nov 2025 12:13:23 +0200 Subject: [PATCH] core/rawdb: prevent uint64 underflow --- core/rawdb/freezer_table.go | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/core/rawdb/freezer_table.go b/core/rawdb/freezer_table.go index aedb2d8eed..8320e13078 100644 --- a/core/rawdb/freezer_table.go +++ b/core/rawdb/freezer_table.go @@ -771,8 +771,9 @@ func (t *freezerTable) truncateTail(items uint64) error { deleted = t.itemOffset.Load() ) // Hidden items exceed the current tail file, drop the relevant data files. - for current := items - 1; current >= deleted; current -= 1 { - if _, err := t.index.ReadAt(buffer, int64((current-deleted+1)*indexEntrySize)); err != nil { + for current := items; current > deleted; current-- { + idx := current - 1 + if _, err := t.index.ReadAt(buffer, int64((idx-deleted+1)*indexEntrySize)); err != nil { return err } var pre indexEntry @@ -780,7 +781,7 @@ func (t *freezerTable) truncateTail(items uint64) error { if pre.filenum != newTailId { break } - newDeleted = current + newDeleted = idx } // Close the index file before shorten it. if err := t.index.Close(); err != nil {