netpoll空指针问题 #408
Description
我们线上使用的hertz的服务，出现panic，疑似netpoll的问题：
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0xee22ce]
goroutine 2771338 [running]:
github.com/cloudwego/netpoll.(*linkBufferNode).Next(...)
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/cloudwego/netpoll/nocopy_linkbuffer.go:833
github.com/cloudwego/netpoll.(*UnsafeLinkBuffer).Next(0x9?, 0x479852?)
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/cloudwego/netpoll/nocopy_linkbuffer.go:97 +0x22e
github.com/cloudwego/netpoll.(*connection).Read(0xc0004a8640, {0xc005abc480, 0x8, 0xc003156cf8?})
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/cloudwego/netpoll/connection_impl.go:286 +0x7b
github.com/cloudwego/hertz/pkg/network/netpoll.(*Conn).Read(0xc0057aad70?, {0xc005abc480?, 0x9?, 0x9?})
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/cloudwego/hertz/pkg/network/netpoll/connection.go:53 +0x22
io.ReadAtLeast({0x7fea09b3c028, 0xc0057aad70}, {0xc005abc480, 0x8, 0x35}, 0x8)
/usr/local/go/src/io/io.go:335 +0x90
io.ReadFull(...)
/usr/local/go/src/io/io.go:354
github.com/hertz-contrib/http2.(*Framer).ReadFrame(0xc00606a780)
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/hertz-contrib/http2/frame.go:511 +0x113
github.com/hertz-contrib/http2.(*clientConnReadLoop).run(0xc003156fa8)
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/hertz-contrib/http2/client.go:1878 +0x12d
github.com/hertz-contrib/http2.(*clientConn).readLoop(0xc000a3eea0)
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/hertz-contrib/http2/client.go:1801 +0x55
created by github.com/hertz-contrib/http2.(*HostClient).newClientConn in goroutine 2771321
/var/jenkins_home/workspace/online-k8s-hestia@2/vendor/github.com/hertz-contrib/http2/client.go:587 +0xa9b