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Add missing mutex to tail.reader usage #4829

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Merged
kalleep merged 1 commit into from
Nov 13, 2025
Merged

Add missing mutex to tail.reader usage #4829

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2 changes: 2 additions & 0 deletions internal/component/loki/source/file/internal/tail/tail.go
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Original file line number Diff line number Diff line change
Expand Up @@ -394,6 +394,8 @@ func (tail *Tail) seekTo(pos SeekInfo) error {
return fmt.Errorf("Seek error on %s: %s", tail.Filename, err)
}
// Reset the read buffer whenever the file is re-seek'ed
tail.readerMut.Lock()
tail.reader.Reset(tail.file)
tail.readerMut.Unlock()
return nil
}