panic: PullUp failed goroutine 13503 [running]: panic(0x1083e20, 0x13c7620) GOROOT/src/runtime/panic.go:1064 +0x545 fp=0xc0009b1110 sp=0xc0009b1048 pc=0x437265 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).headerView(0xc0815c1800, 0x2, 0x18, 0x3a, 0x3a) pkg/tcpip/stack/packet_buffer.go:280 +0xcb fp=0xc0009b1158 sp=0xc0009b1110 pc=0x94818b gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).consume(0xc0815c1800, 0x2, 0x8, 0x948125, 0xc0815c2800, 0xe, 0x14) pkg/tcpip/stack/packet_buffer.go:270 +0xac fp=0xc0009b11b0 sp=0xc0009b1158 pc=0x947fcc gvisor.dev/gvisor/pkg/tcpip/stack.PacketHeader.Consume(...) pkg/tcpip/stack/packet_buffer.go:380 gvisor.dev/gvisor/pkg/tcpip/header/parse.UDP(0xc0815c1800, 0x948125) pkg/tcpip/header/parse/parse.go:150 +0x3d fp=0xc0009b11f8 sp=0xc0009b11b0 pc=0xacca5d gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*protocol).Parse(0xc000880080, 0xc0815c1800, 0x11) pkg/tcpip/transport/udp/protocol.go:114 +0x2b fp=0xc0009b1218 sp=0xc0009b11f8 pc=0xb0ec8b gvisor.dev/gvisor/pkg/tcpip/stack.(*Stack).ParsePacketBufferTransport(0xc000423c00, 0x11, 0xc0815c1800, 0xffff) pkg/tcpip/stack/stack.go:1838 +0x98 fp=0xc0009b1250 sp=0xc0009b1218 pc=0x956ad8 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*protocol).parseAndValidate(0xc0006f1860, 0xc0815c1800, 0x40000000, 0x40000000, 0xc0009b1360, 0x581685) pkg/tcpip/network/ipv4/ipv4.go:1263 +0x1aa fp=0xc0009b12d8 sp=0xc0009b1250 pc=0xb2466a gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc00032ae00, 0xc0815c1800) pkg/tcpip/network/ipv4/ipv4.go:758 +0xae fp=0xc0009b1560 sp=0xc0009b12d8 pc=0xb2190e gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0xc00036e0f0, 0xc0815b5b78, 0x6, 0x0, 0x0, 0x800, 0xc0815c1800) pkg/tcpip/stack/nic.go:762 +0x24f fp=0xc0009b15f0 sp=0xc0009b1560 pc=0x945eaf 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(0xc00047a068, 0xc0815da7c0, 0x3a, 0x3a, 0x0, 0x1, 0x20001280) pkg/tcpip/link/tun/device.go:226 +0x2d6 fp=0xc0009b16d0 sp=0xc0009b15f0 pc=0xb484d6 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc00047a000, 0x14139e0, 0xc08309f500, 0x140da80, 0xc083530000, 0x0, 0x1, 0x20001280, 0x3a, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x1de fp=0xc0009b17d8 sp=0xc0009b16d0 pc=0xebaa3e gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc00047a000, 0x14139e0, 0xc08309f500, 0x140da80, 0xc083530000, 0x0, 0x1, 0x20001280, 0x3a, 0x100, ...) pkg/sentry/vfs/file_description.go:654 +0xb4 fp=0xc0009b1870 sp=0xc0009b17d8 pc=0x746814 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc08309f500, 0xc00047a000, 0x140da80, 0xc083530000, 0x0, 0x1, 0x20001280, 0x3a, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:345 +0x9b fp=0xc0009b1a00 sp=0xc0009b1870 pc=0xdf4b1b gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc08309f500, 0xf0, 0x20001280, 0x3a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:314 +0x1d4 fp=0xc0009b1af8 sp=0xc0009b1a00 pc=0xdf4454 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc08309f500, 0x1, 0xf0, 0x20001280, 0x3a, 0x0, 0x0, 0x0, 0x1, 0x127ce20, ...) pkg/sentry/kernel/task_syscall.go:102 +0x13c fp=0xc0009b1c58 sp=0xc0009b1af8 pc=0x9f135c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc08309f500, 0x1, 0xf0, 0x20001280, 0x3a, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:237 +0x66 fp=0xc0009b1ce0 sp=0xc0009b1c58 pc=0x9f2526 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc08309f500, 0x1, 0xf0, 0x20001280, 0x3a, 0x0, 0x0, 0x0, 0xe47dce, 0xc082098be0) pkg/sentry/kernel/task_syscall.go:197 +0x98 fp=0xc0009b1d40 sp=0xc0009b1ce0 pc=0x9f20d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc08309f500, 0x2, 0xc08309f500) pkg/sentry/kernel/task_syscall.go:172 +0x15c fp=0xc0009b1e10 sp=0xc0009b1d40 pc=0x9f1a7c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc08309f500, 0x13e00c0, 0x0) pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc0009b1f60 sp=0xc0009b1e10 pc=0x9e5e25 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc08309f500, 0x16d) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc0009b1fd0 sp=0xc0009b1f60 pc=0x9e4aef runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0009b1fd8 sp=0xc0009b1fd0 pc=0x4709a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:328 +0xfe