panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0xf4 pc=0xbcb637]

goroutine 118129 [running]:
panic(0x11cafa0, 0x1e91730)
	GOROOT/src/runtime/panic.go:1064 +0x545 fp=0xc0876002f0 sp=0xc087600228 pc=0x437265
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:212
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:742 +0x413 fp=0xc087600320 sp=0xc0876002f0 pc=0x44e093
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleValidatedPacket(0xc00043ae00, 0x0, 0x0, 0x0, 0x0)
	pkg/tcpip/network/ipv4/ipv4.go:970 +0x77 fp=0xc087601838 sp=0xc087600320 pc=0xbcb637
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc00043ae00, 0xc006f83000)
	pkg/tcpip/network/ipv4/ipv4.go:943 +0x16c fp=0xc087601aa0 sp=0xc087601838 pc=0xbcaf2c
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0xc00047e3c0, 0x0, 0x0, 0x0, 0x0, 0xc000000800, 0xc006f83000)
	pkg/tcpip/stack/nic.go:928 +0x31f fp=0xc087601b30 sp=0xc087601aa0 pc=0x9b2c3f
gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket(0xc0006304d0, 0x0, 0x0, 0x0, 0x0, 0xc000000800, 0xc006f83000)
	pkg/tcpip/link/nested/nested.go:63 +0x104 fp=0xc087601b90 sp=0xc087601b30 pc=0xc68224
gvisor.dev/gvisor/pkg/tcpip/link/sniffer.(*endpoint).DeliverNetworkPacket(0xc0006304d0, 0x0, 0x0, 0x0, 0x0, 0x800, 0xc006f83000)
	pkg/tcpip/link/sniffer/sniffer.go:156 +0x9e fp=0xc087601bd8 sp=0xc087601b90 pc=0xc6903e
gvisor.dev/gvisor/pkg/tcpip/link/loopback.(*endpoint).WritePacket(0xc000670040, 0xc006fa6b9c, 0x4, 0xc006fa6b9c, 0x4, 0x0, 0x0, 0x0, 0x0, 0x100000800, ...)
	pkg/tcpip/link/loopback/loopback.go:98 +0xfd fp=0xc087601c30 sp=0xc087601bd8 pc=0xf02bdd
gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).WritePacket(...)
	pkg/tcpip/link/nested/nested.go:132
gvisor.dev/gvisor/pkg/tcpip/link/sniffer.(*endpoint).WritePacket(0xc0006304d0, 0xc006fa6b9c, 0x4, 0xc006fa6b9c, 0x4, 0x0, 0x0, 0x0, 0x0, 0x100000800, ...)
	pkg/tcpip/link/sniffer/sniffer.go:225 +0x113 fp=0xc087601d18 sp=0xc087601c30 pc=0xc69573
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).writePacket(0xc00047e3c0, 0xc006fa6b9c, 0x4, 0xc006fa6b9c, 0x4, 0x0, 0x0, 0x0, 0x0, 0x100000800, ...)
	pkg/tcpip/stack/nic.go:439 +0x11e fp=0xc087601db0 sp=0xc087601d18 pc=0x9b07fe
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).writePacketBuffer(0xc00047e3c0, 0xc006fa6b9c, 0x4, 0xc006fa6b9c, 0x4, 0x0, 0x0, 0x0, 0x0, 0x100000800, ...)
	pkg/tcpip/stack/nic.go:375 +0xd0 fp=0xc087601e60 sp=0xc087601db0 pc=0x9b0150
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).enqueuePacketBuffer(0xc00047e3c0, 0xc004cf6960, 0x800, 0x14f0ca0, 0xc006f82f00, 0xc006ffa85c, 0x8, 0x8)
	pkg/tcpip/stack/nic.go:396 +0x1e8 fp=0xc087601f58 sp=0xc087601e60 pc=0x9b0548
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).WritePacket(0xc00047e3c0, 0xc004cf6960, 0xc000000800, 0xc006f82f00, 0x1c, 0x0)
	pkg/tcpip/stack/nic.go:366 +0x5d fp=0xc087601fa8 sp=0xc087601f58 pc=0x9b003d
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacket(0xc00043ae00, 0xc004cf6960, 0xc006f82f00, 0xc004cf6900, 0x0, 0x0)
	pkg/tcpip/network/ipv4/ipv4.go:537 +0x4d1 fp=0xc0876021d0 sp=0xc087601fa8 pc=0xbc8b51
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).WritePacket(0xc00043ae00, 0xc004cf6960, 0x4000000011, 0xc006f82f00, 0xc000000800, 0xc00053c918)
	pkg/tcpip/network/ipv4/ipv4.go:472 +0x1b7 fp=0xc087602240 sp=0xc0876021d0 pc=0xbc84f7
gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc004cf6960, 0x4000000011, 0xc006f82f00, 0xc0023642d8, 0x8)
	pkg/tcpip/stack/route.go:569 +0xd4 fp=0xc087602280 sp=0xc087602240 pc=0x9bb894
gvisor.dev/gvisor/pkg/tcpip/transport/udp.sendUDP(0xc004cf6960, 0x0, 0x0, 0x0, 0x0, 0x1004e2385b5, 0x14fbf20, 0xc007510a80, 0x0, 0x0, ...)
	pkg/tcpip/transport/udp/endpoint.go:1054 +0x40d fp=0xc087603540 sp=0xc087602280 pc=0xbb052d
gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write(0xc00753a000, 0x1503120, 0xc007241360, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/tcpip/transport/udp/endpoint.go:698 +0x765 fp=0xc0876036c0 sp=0xc087603540 pc=0xbae445
gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Write(0xc00753a000, 0x1503120, 0xc007241360, 0x0, 0x0, 0x20004d80, 0x20004db8, 0x1)
	pkg/tcpip/transport/udp/endpoint.go:503 +0x72 fp=0xc087603710 sp=0xc0876036c0 pc=0xbada12
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc0067bf0b0, 0xc007276000, 0x151d220, 0xc007394000, 0x0, 0x0, 0x0, 0x0, 0x100, 0x0, ...)
	pkg/sentry/socket/netstack/netstack.go:3636 +0x249 fp=0xc087603880 sp=0xc087603710 pc=0xc0aca9
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg(0xc007276000, 0x3ff3ecb522d8, 0xc0067bf040, 0xc0067bf040, 0x20004d80, 0x0, 0x587869, 0x3ff41de07000, 0xc0007b9490)
	pkg/sentry/syscalls/linux/vfs2/socket.go:1377 +0x45e fp=0xc087603ac0 sp=0xc087603880 pc=0xede0de
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMMsg(0xc007276000, 0x3, 0x20004d80, 0x400000000000065, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/vfs2/socket.go:1269 +0x394 fp=0xc087603b90 sp=0xc087603ac0 pc=0xedd7f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007276000, 0x133, 0x3, 0x20004d80, 0x400000000000065, 0x0, 0x0, 0x0, 0xf1e1c5, 0x136d1e0, ...)
	pkg/sentry/kernel/task_syscall.go:114 +0x1b9 fp=0xc087603c50 sp=0xc087603b90 pc=0xa71459
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007276000, 0x133, 0x3, 0x20004d80, 0x400000000000065, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:289 +0x70 fp=0xc087603cd8 sp=0xc087603c50 pc=0xa72710
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc007276000, 0x133, 0x3, 0x20004d80, 0x400000000000065, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:236 +0xb4 fp=0xc087603d38 sp=0xc087603cd8 pc=0xa72214
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc007276000, 0x2, 0xc007276000)
	pkg/sentry/kernel/task_syscall.go:203 +0x198 fp=0xc087603e08 sp=0xc087603d38 pc=0xa71af8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc007276000, 0x14efb20, 0x0)
	pkg/sentry/kernel/task_run.go:327 +0xd95 fp=0xc087603f60 sp=0xc087603e08 pc=0xa64535
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007276000, 0x904)
	pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc087603fd0 sp=0xc087603f60 pc=0xa63042
runtime.goexit()
	src/runtime/asm_amd64.s:1374 +0x1 fp=0xc087603fd8 sp=0xc087603fd0 pc=0x4709a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:381 +0x116