panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xad7622]

goroutine 120888 [running]:
panic(0x10c0b40, 0x1be7d70)
	GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc08a007fd0 sp=0xc08a007f08 pc=0x437c65
runtime.panicmem()
	GOROOT/src/runtime/panic.go:212 +0x5b fp=0xc08a007ff0 sp=0xc08a007fd0 pc=0x435cbb
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:734 +0x173 fp=0xc08a008028 sp=0xc08a007ff0 pc=0x44f993
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*segmentList).PushBack(...)
	bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/tcpip/transport/tcp/tcp_segment_list.go:94
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*segmentQueue).enqueue(0xc009035a28, 0x0, 0x0)
	pkg/tcpip/transport/tcp/segment_queue.go:63 +0x82 fp=0xc08a008060 sp=0xc08a008028 pc=0xad7622
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).enqueueSegment(0xc009035800, 0x0, 0x0)
	pkg/tcpip/transport/tcp/endpoint.go:2721 +0x59 fp=0xc08a008a48 sp=0xc08a008060 pc=0xacd739
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*dispatcher).queuePacket(0xc0017940c0, 0x13ea798, 0xc009035800, 0x2, 0xc002ebd02c, 0x4, 0xcad3, 0xc002ebd028, 0x4, 0x13e30b8, ...)
	pkg/tcpip/transport/tcp/dispatcher.go:201 +0x1cb fp=0xc08a00b1b0 sp=0xc08a008a48 pc=0xac46cb
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*protocol).QueuePacket(0xc001794000, 0x13ea798, 0xc009035800, 0x2, 0xc002ebd02c, 0x4, 0xcad3, 0xc002ebd028, 0x4, 0xc00282be00)
	pkg/tcpip/transport/tcp/protocol.go:137 +0x9b fp=0xc08a00b220 sp=0xc08a00b1b0 pc=0xad135b
gvisor.dev/gvisor/pkg/tcpip/stack.(*endpointsByNIC).handlePacket(0xc008bcf3e0, 0x2, 0xc002ebd02c, 0x4, 0xcad3, 0xc002ebd028, 0x4, 0xc00282be00, 0xc009e31328)
	pkg/tcpip/stack/transport_demuxer.go:176 +0x20b fp=0xc08a00b2a0 sp=0xc08a00b220 pc=0x94a7cb
gvisor.dev/gvisor/pkg/tcpip/stack.(*transportDemuxer).deliverPacket(0xc00373f830, 0xc000000006, 0xc00282be00, 0x2, 0xc002ebd02c, 0x4, 0xcad3, 0xc002ebd028, 0x4, 0xc002ebd024)
	pkg/tcpip/stack/transport_demuxer.go:581 +0x430 fp=0xc08a00b338 sp=0xc08a00b2a0 pc=0x94d1d0
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverTransportPacket(0xc0017a8380, 0x6, 0xc00282be00, 0x0)
	pkg/tcpip/stack/nic.go:820 +0x2e5 fp=0xc08a00b440 sp=0xc08a00b338 pc=0x937485
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleValidatedPacket(0xc0017ae700, 0xc000538346, 0x14, 0x34, 0xc00282be00, 0xc0031cac20, 0x7)
	pkg/tcpip/network/ipv4/ipv4.go:1046 +0x8ec fp=0xc08a00bc08 sp=0xc08a00b440 pc=0xb038ac
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleLocalPacket(0xc0017ae700, 0xc00282be00, 0x1)
	pkg/tcpip/network/ipv4/ipv4.go:855 +0x157 fp=0xc08a00be18 sp=0xc08a00bc08 pc=0xb02f57
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacket(0xc0017ae700, 0xc0025d4dc0, 0xc00282bd00, 0xc0025d4d00, 0x0, 0x0)
	pkg/tcpip/network/ipv4/ipv4.go:453 +0x51a fp=0xc08a00c050 sp=0xc08a00be18 pc=0xb00aba
gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).WritePacket(0xc0017ae700, 0xc0025d4dc0, 0x2004000000006, 0xc00282bd00, 0xffff1120, 0xc00053835a)
	pkg/tcpip/network/ipv4/ipv4.go:445 +0x179 fp=0xc08a00c0c0 sp=0xc08a00c050 pc=0xb00439
gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc0025d4dc0, 0x4000000006, 0xc00282bd00, 0xc0017aa028, 0x2)
	pkg/tcpip/stack/route.go:462 +0xad fp=0xc08a00c100 sp=0xc08a00c0c0 pc=0x93e7ed
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.sendTCP(0xc0025d4dc0, 0xcad3, 0xc00067dfe8, 0x4, 0x2, 0xc00067dfe8, 0x4, 0x2dae69ac00110040, 0xffffc091e74b, 0xc000914630, ...)
	pkg/tcpip/transport/tcp/connect.go:842 +0x285 fp=0xc08a00df50 sp=0xc08a00c100 pc=0xabfea5
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).sendTCP(0xc009034a00, 0xc0025d4dc0, 0xcad3, 0xc00067dfe8, 0x4, 0x2, 0xc00067dfe8, 0x4, 0x2dae69ac00110000, 0xffffc091e74b, ...)
	pkg/tcpip/transport/tcp/connect.go:734 +0xea fp=0xc08a00e020 sp=0xc08a00df50 pc=0xabf26a
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).sendRaw(0xc009034a00, 0x0, 0x0, 0x0, 0x0, 0x2dae69ac00000011, 0xffffc091e74b, 0x0, 0x0)
	pkg/tcpip/transport/tcp/connect.go:899 +0x23c fp=0xc08a00e1a0 sp=0xc08a00e020 pc=0xac065c
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*sender).sendSegmentFromView(0xc009c4c700, 0x0, 0x0, 0x0, 0x0, 0x2dae69ac00000011, 0x0, 0x0)
	pkg/tcpip/transport/tcp/snd.go:1547 +0xef fp=0xc08a00e1f8 sp=0xc08a00e1a0 pc=0xadbfaf
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*sender).sendSegment(0xc009c4c700, 0xc00921c800, 0x12a7d6d2, 0xe7791f766)
	pkg/tcpip/transport/tcp/snd.go:1515 +0x1c5 fp=0xc08a00f5d8 sp=0xc08a00e1f8 pc=0xadbdc5
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*sender).maybeSendSegment(0xc009c4c700, 0xc00921c800, 0x5a8, 0xc02daf69ab, 0xad6a9e)
	pkg/tcpip/transport/tcp/snd.go:843 +0x35c fp=0xc08a00f668 sp=0xc08a00f5d8 pc=0xad9b1c
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*sender).sendData(0xc009c4c700)
	pkg/tcpip/transport/tcp/snd.go:946 +0x129 fp=0xc08a00f6c0 sp=0xc08a00f668 pc=0xada169
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).sendData(...)
	pkg/tcpip/transport/tcp/connect.go:924
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).shutdownLocked(0xc009034a00, 0x3, 0x0, 0xc001beb7b0)
	pkg/tcpip/transport/tcp/endpoint.go:2432 +0x265 fp=0xc08a00f778 sp=0xc08a00f6c0 pc=0xacbea5
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).Close(0xc009034a00)
	pkg/tcpip/transport/tcp/endpoint.go:1027 +0x16d fp=0xc08a00f7c0 sp=0xc08a00f778 pc=0xac602d
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).Release(0xc0066f3c10, 0x13f37e0, 0xc009bee000)
	pkg/sentry/socket/netstack/netstack.go:432 +0x1a2 fp=0xc08a00f890 sp=0xc08a00f7c0 pc=0xb2d362
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketVFS2).Release(0xc0066f3ba0, 0x13f37e0, 0xc009bee000)
	pkg/sentry/socket/netstack/netstack_vfs2.go:84 +0xab fp=0xc08a00f8c8 sp=0xc08a00f890 pc=0xb3e32b
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1()
	pkg/sentry/vfs/file_description.go:194 +0x231 fp=0xc08a00f9a8 sp=0xc08a00f8c8 pc=0x761bd1
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc0066f3ba0, 0xc001beba30)
	bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x5a fp=0xc08a00fa20 sp=0xc08a00f9a8 pc=0x7427fa
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc0066f3ba0, 0x13f37e0, 0xc009bee000)
	pkg/sentry/vfs/file_description.go:163 +0x69 fp=0xc08a00fa60 sp=0xc08a00fa20 pc=0x73c5a9
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Close(0xc009bee000, 0x3, 0x1, 0x570e08, 0x7f13f63014f0, 0x0, 0x1b32d20214, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/vfs2/fd.go:44 +0x1ba fp=0xc08a00fb00 sp=0xc08a00fa60 pc=0xde6dda
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc009bee000, 0x3, 0x3, 0x1, 0x570e08, 0x7f13f63014f0, 0x0, 0x1b32d20214, 0xe3f910, 0x1260a20, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x13c fp=0xc08a00fc60 sp=0xc08a00fb00 pc=0x9c389c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc009bee000, 0x3, 0x3, 0x1, 0x570e08, 0x7f13f63014f0, 0x0, 0x1b32d20214, 0x0, 0x1b32d20214)
	pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc08a00fce8 sp=0xc08a00fc60 pc=0x9c4a26
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc009bee000, 0x3, 0x3, 0x1, 0x570e08, 0x7f13f63014f0, 0x0, 0x1b32d20214, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:198 +0x98 fp=0xc08a00fd48 sp=0xc08a00fce8 pc=0x9c4618
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc009bee000, 0x2, 0xc009bee000)
	pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc08a00fe18 sp=0xc08a00fd48 pc=0x9c3fbc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc009bee000, 0x13c8ec0, 0x0)
	pkg/sentry/kernel/task_run.go:282 +0xc8c fp=0xc08a00ff60 sp=0xc08a00fe18 pc=0x9b8c4c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc009bee000, 0x10c2)
	pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc08a00ffd0 sp=0xc08a00ff60 pc=0x9b78cf
runtime.goexit()
	src/runtime/asm_amd64.s:1371 +0x1 fp=0xc08a00ffd8 sp=0xc08a00ffd0 pc=0x472821
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:327 +0xfe