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This commit is contained in:
Alfonso Acosta
2017-01-27 13:05:50 +00:00
parent 7ae94a8c8a
commit 6347238f10
1 changed files with 9 additions and 3 deletions
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12
probe/endpoint/dns_snooper_linux_amd64.go
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@@ -15,9 +15,10 @@ import (
)
const (
bufSize = 8 * 1024 * 1024 // 8MB
maxReverseDNSrecords = 10000
maxLogsPerDecodingError = 4
bufSize = 8 * 1024 * 1024 // 8MB
maxReverseDNSrecords = 10000
maxLogsPerDecodingError = 4
maxDecodingErrorCardinality = 1000
)
// DNSSnooper is a snopper of DNS queries
@@ -209,6 +210,11 @@ func (s *DNSSnooper) run() {
// handleDecodeError logs errors up to the maximum allowed count
func (s *DNSSnooper) handleDecodingError(err error) {
// prevent potential memory leak
if len(s.decodingErrorCounts) > maxDecodingErrorCardinality {
return
}
str := err.Error()
count := s.decodingErrorCounts[str]
count++