panic: PullUp failed goroutine 117694 [running]: panic(0x1815fa0, 0x1bc13c0) GOROOT/src/runtime/panic.go:1064 +0x545 fp=0xc006b4aa00 sp=0xc006b4a938 pc=0x439ae5 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).headerView(0xc004c63500, 0x2, 0x0, 0x14, 0x0) pkg/tcpip/stack/packet_buffer.go:280 +0x1d1 fp=0xc006b4aa88 sp=0xc006b4aa00 pc=0xc7f4f1 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).consume(0xc004c63500, 0x2, 0x8, 0xe, 0x4, 0xc0015d6858, 0xc006b4abd8) pkg/tcpip/stack/packet_buffer.go:270 +0x26c fp=0xc006b4ab20 sp=0xc006b4aa88 pc=0xc7f20c gvisor.dev/gvisor/pkg/tcpip/stack.PacketHeader.Consume(...) pkg/tcpip/stack/packet_buffer.go:380 gvisor.dev/gvisor/pkg/tcpip/header/parse.UDP(0xc004c63500, 0xc9500a) pkg/tcpip/header/parse/parse.go:150 +0x4c fp=0xc006b4ab70 sp=0xc006b4ab20 pc=0xec698c gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*protocol).Parse(0xc000600090, 0xc004c63500, 0xc000000011) pkg/tcpip/transport/udp/protocol.go:114 +0x39 fp=0xc006b4ab98 sp=0xc006b4ab70 pc=0xf37059 gvisor.dev/gvisor/pkg/tcpip/stack.(*Stack).ParsePacketBufferTransport(0xc0003c7500, 0x11, 0xc004c63500, 0xffff) pkg/tcpip/stack/stack.go:1838 +0x107 fp=0xc006b4abe8 sp=0xc006b4ab98 pc=0xc95067 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*protocol).parseAndValidate(0xc000980840, 0xc004c63500, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/network/ipv4/ipv4.go:1263 +0x25a fp=0xc006b4ac80 sp=0xc006b4abe8 pc=0xf57c7a gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc0001b8700, 0xc004c63500) pkg/tcpip/network/ipv4/ipv4.go:758 +0x107 fp=0xc006b4af38 sp=0xc006b4ac80 pc=0xf53e07 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0xc000214000, 0xc002776134, 0x6, 0x0, 0x0, 0x800, 0xc004c63500) pkg/tcpip/stack/nic.go:762 +0x442 fp=0xc006b4b038 sp=0xc006b4af38 pc=0xc7b7a2 gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectLinkAddr(...) pkg/tcpip/link/channel/channel.go:193 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc00067e728, 0xc00e07f080, 0x22, 0x22, 0x0, 0x1, 0x200001c0) pkg/tcpip/link/tun/device.go:226 +0x4a3 fp=0xc006b4b198 sp=0xc006b4b038 pc=0xf8e083 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc00067e6c0, 0x1c0e180, 0xc007853500, 0x1c08060, 0xc008153000, 0x0, 0x1, 0x200001c0, 0x22, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x22b fp=0xc006b4b2c8 sp=0xc006b4b198 pc=0x14ce9ab gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc00067e6c0, 0x1c0e180, 0xc007853500, 0x1c08060, 0xc008153000, 0x0, 0x1, 0x200001c0, 0x22, 0x100, ...) pkg/sentry/vfs/file_description.go:654 +0x131 fp=0xc006b4b3b0 sp=0xc006b4b2c8 pc=0x95c171 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc007853500, 0xc00067e6c0, 0x1c08060, 0xc008153000, 0x0, 0x1, 0x200001c0, 0x22, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:345 +0xee fp=0xc006b4b5b0 sp=0xc006b4b3b0 pc=0x139f5ae gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc007853500, 0xf0, 0x200001c0, 0x22, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:314 +0x2a5 fp=0xc006b4b730 sp=0xc006b4b5b0 pc=0x139ee25 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007853500, 0x1, 0xf0, 0x200001c0, 0x22, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/kernel/task_syscall.go:102 +0x453 fp=0xc006b4b9d0 sp=0xc006b4b730 pc=0xd93073 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007853500, 0x1, 0xf0, 0x200001c0, 0x22, 0x0, 0x0, 0x0, 0x408eb8, 0xc007853de7) pkg/sentry/kernel/task_syscall.go:237 +0xba fp=0xc006b4bab0 sp=0xc006b4b9d0 pc=0xd947fa gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc007853500, 0x1, 0xf0, 0x200001c0, 0x22, 0x0, 0x0, 0x0, 0x1417c4b, 0x2f19996) pkg/sentry/kernel/task_syscall.go:197 +0x10f fp=0xc006b4bb60 sp=0xc006b4bab0 pc=0xd9410f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc007853500, 0x2, 0xc007853500) pkg/sentry/kernel/task_syscall.go:172 +0x1ea fp=0xc006b4bca0 sp=0xc006b4bb60 pc=0xd938aa gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc007853500, 0x1bd9fc0, 0x0) pkg/sentry/kernel/task_run.go:282 +0x12a7 fp=0xc006b4bed8 sp=0xc006b4bca0 pc=0xd7f1e7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007853500, 0x15b4) pkg/sentry/kernel/task_run.go:97 +0x398 fp=0xc006b4bfd0 sp=0xc006b4bed8 pc=0xd7d318 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc006b4bfd8 sp=0xc006b4bfd0 pc=0x475221 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:328 +0x1a5