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ebpf: fixed crash caused by malformed modules

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Ref: https://bugs.debian.org/1037282
This commit is contained in:
Gustavo Iñiguez Goia 2023-06-10 13:44:25 +02:00
parent be1e7fe405
commit 63b986542f
Failed to generate hash of commit
1 changed files with 3 additions and 0 deletions
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3
daemon/procmon/ebpf/ebpf.go
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@ -92,6 +92,9 @@ func Start() error {
zeroKey := make([]byte, 4)
zeroValue := make([]byte, 8)
for _, name := range []string{"tcpcounter", "tcpv6counter", "udpcounter", "udpv6counter"} {
if m.Map(name) == nil {
return fmt.Errorf("eBPF module malformed, \"%s\" map missing. Verify that the module compiled fine and is correctly generated", name)
}
err := m.UpdateElement(m.Map(name), unsafe.Pointer(&zeroKey[0]), unsafe.Pointer(&zeroValue[0]), 0)
if err != nil {
log.Error("eBPF could not init counters to zero: %v", err)