[BUG] lbagent panic导致haproxy重启

[yulongz]

问题描述/What happened:
lbagent日志中出现了panic导致haproxy重启

[info 2025-03-20 08:00:15 lbagent.(*ApiHelper).doUseCorpus(api.go:419)] make effect new corpus and params
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x23ba4b3]

goroutine 358 [running]:
yunion.io/x/onecloud/pkg/lbagent/models.(*LoadbalancerCorpus).genHaproxyConfigTcp(0xc001ea59c0?, 0x2d1608c?, 0xc0038f5780, 0x2?)
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/models/haproxy.go:554 +0x133
yunion.io/x/onecloud/pkg/lbagent/models.(*LoadbalancerCorpus).GenHaproxyConfigs(0xc000349b80, {0xc0042b09c0, 0x40}, 0xc002b7f710)
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/models/haproxy.go:137 +0xdbb
yunion.io/x/onecloud/pkg/lbagent.(*HaproxyHelper).handleUseCorpusCmd.func1({0xc0042b09c0, 0x40})
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/haproxy.go:163 +0x2c5
yunion.io/x/onecloud/pkg/lbagent/utils.(*ConfigDirManager).NewDir(0xc000158f4c?, 0xc000158e58)
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/utils/configdir.go:68 +0xb1
yunion.io/x/onecloud/pkg/lbagent.(*HaproxyHelper).handleUseCorpusCmd(0xc000279080, {0x3245da0, 0xc0013e1bc0}, 0xc006832420?)
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/haproxy.go:143 +0x93
yunion.io/x/onecloud/pkg/lbagent.(*HaproxyHelper).handleCmd(0xc000158f80?, {0x3245da0?, 0xc0013e1bc0?}, 0x0?)
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/haproxy.go:99 +0x8e
yunion.io/x/onecloud/pkg/lbagent.(*HaproxyHelper).Run(0xc0001a4fd0?, {0x3245da0, 0xc0013e1bc0})
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/haproxy.go:88 +0xd3
created by yunion.io/x/onecloud/pkg/lbagent.StartService
        /root/go/src/yunion.io/x/onecloud/pkg/lbagent/service.go:115 +0x885

环境/Environment:
v3.10.15

• OS (e.g. cat /etc/os-release):
• Kernel (e.g. uname -a):
• Host: (e.g. dmidecode | egrep -i 'manufacturer|product' |sort -u)
• Service Version (e.g. kubectl exec -n onecloud $(kubectl get pods -n onecloud | grep climc | awk '{print $1}') -- climc version-list):