DATA RACE in udp.(*endpoint).Connect (2)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
gvisor	DATA RACE in udp.(*endpoint).Connect	-1	syz			10	2196d	2202d	0/26	fixed on 2020/03/10 21:06

WARNING: DATA RACE
Write at 0x00c000475cc8 by goroutine 324:
  gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Connect()
      pkg/tcpip/transport/udp/endpoint.go:1168 +0x644
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).Connect()
      pkg/sentry/socket/netstack/netstack.go:783 +0x4e7
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketVFS2).Connect()
      <autogenerated>:1 +0x84
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Connect()
      pkg/sentry/syscalls/linux/vfs2/socket.go:278 +0x256
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:104 +0x452
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:239 +0xb9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:199 +0x10e
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:174 +0x1e9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:282 +0x12a6
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x397

Previous read at 0x00c000475cc8 by goroutine 322:
  gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).Stats()
      pkg/tcpip/stack/route.go:191 +0x84a
  gvisor.dev/gvisor/pkg/tcpip/transport/udp.sendUDP()
      pkg/tcpip/transport/udp/endpoint.go:1029 +0x818
  gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write()
      pkg/tcpip/transport/udp/endpoint.go:568 +0x7a4
  gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Write()
      pkg/tcpip/transport/udp/endpoint.go:398 +0x84
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg()
      pkg/sentry/socket/netstack/netstack.go:2987 +0x23c
  gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketVFS2).SendMsg()
      <autogenerated>:1 +0x177
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg()
      pkg/sentry/syscalls/linux/vfs2/socket.go:1056 +0x419
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMMsg()
      pkg/sentry/syscalls/linux/vfs2/socket.go:980 +0x319
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:104 +0x452
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:239 +0xb9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:199 +0x10e
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:174 +0x1e9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:282 +0x12a6
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x397

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Manager
2020/11/20 13:47	gvisor	ed8185fc754e	0767f13f	.config	console log	report	syz	C		ci-gvisor-ptrace-proxy-sandbox-race
2020/11/26 00:36	gvisor	d04144fbb7b9	3f581b43	.config	console log	report			info	ci-gvisor-ptrace-proxy-sandbox-race
2020/11/25 17:24	gvisor	d04144fbb7b9	3f581b43	.config	console log	report			info	ci-gvisor-ptrace-proxy-sandbox-race
2020/11/20 13:35	gvisor	ed8185fc754e	0767f13f	.config	console log	report			info	ci-gvisor-ptrace-proxy-sandbox-race