panic: runtime error: slice bounds out of range [255:20] goroutine 594315 [running]: panic(0x11a2300, 0xc00445ff20) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc0024ed368 sp=0xc0024ed2b0 pc=0x437030 runtime.goPanicSliceB(0xff, 0x14) GOROOT/src/runtime/panic.go:116 +0xa5 fp=0xc0024ed3b0 sp=0xc0024ed368 pc=0x434fc5 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv4OptionTimestamp).UpdateTimestamp(0xc0024ed478, 0xc0054e62dc, 0x4, 0x13f2f40, 0xc00027e780) pkg/tcpip/header/ipv4.go:902 +0x58b fp=0xc0024ed440 sp=0xc0024ed3b0 pc=0x9491eb gvisor.dev/gvisor/pkg/tcpip/network/ipv4.handleTimestamp(0xc0066a3a0a, 0x14, 0x28, 0xc0054e62dc, 0x4, 0x13f2f40, 0xc00027e780, 0x13d6b00, 0x1d03f18, 0x0, ...) pkg/tcpip/network/ipv4/ipv4.go:1451 +0x254 fp=0xc0024ed478 sp=0xc0024ed440 pc=0xb98854 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).processIPOptions(0xc0052203c0, 0xc01497ec30, 0xc008d0b522, 0x14, 0x14, 0x13d6b00, 0x1d03f18, 0x0, 0x0, 0x0, ...) pkg/tcpip/network/ipv4/ipv4.go:1616 +0x87b fp=0xc0024edcd8 sp=0xc0024ed478 pc=0xb9939b gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleICMP(0xc0052203c0, 0xc01497ec30) pkg/tcpip/network/ipv4/icmp.go:130 +0x398 fp=0xc0024ee6c8 sp=0xc0024edcd8 pc=0xb8ed58 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handlePacket(0xc0052203c0, 0xc01497ec30) pkg/tcpip/network/ipv4/ipv4.go:858 +0x1112 fp=0xc0024eef08 sp=0xc0024ee6c8 pc=0xb965d2 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc0052203c0, 0xc01497ec30) pkg/tcpip/network/ipv4/ipv4.go:672 +0x145 fp=0xc0024ef5d0 sp=0xc0024eef08 pc=0xb95385 gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc0122a7a20, 0xc0007d0b00, 0x6, 0x0, 0x0, 0x800, 0xc01497ec30) pkg/tcpip/stack/nic.go:778 +0x682 fp=0xc0024ef6c0 sp=0xc0024ef5d0 pc=0x992a82 gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectLinkAddr(...) pkg/tcpip/link/channel/channel.go:223 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc0095be1e8, 0xc008d0b500, 0x3e, 0x3e, 0x20000100, 0x3e, 0x100) pkg/tcpip/link/tun/device.go:291 +0x434 fp=0xc0024ef7b8 sp=0xc0024ef6c0 pc=0xc87e74 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc0095be180, 0x1402d60, 0xc0159bca80, 0x13fdf60, 0xc0045ea000, 0x0, 0x1, 0x20000100, 0x3e, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:188 +0x1a9 fp=0xc0024ef888 sp=0xc0024ef7b8 pc=0xf29189 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc0095be180, 0x1402d60, 0xc0159bca80, 0x13fdf60, 0xc0045ea000, 0x0, 0x1, 0x20000100, 0x3e, 0x100, ...) pkg/sentry/vfs/file_description.go:695 +0xb5 fp=0xc0024ef908 sp=0xc0024ef888 pc=0x7d5715 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc0159bca80, 0xc0095be180, 0x13fdf60, 0xc0045ea000, 0x0, 0x1, 0x20000100, 0x3e, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:454 +0xa5 fp=0xc0024efa98 sp=0xc0024ef908 pc=0xe5bf45 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc0159bca80, 0xf0, 0x20000100, 0x3e, 0x2b598565b9d0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:417 +0x21e fp=0xc0024efb90 sp=0xc0024efa98 pc=0xe5b7de gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0159bca80, 0x1, 0xf0, 0x20000100, 0x3e, 0x2b598565b9d0, 0x0, 0x0, 0x0, 0x1272f60, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc0024efc50 sp=0xc0024efb90 pc=0xa470f9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0159bca80, 0x1, 0xf0, 0x20000100, 0x3e, 0x2b598565b9d0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc0024efcd8 sp=0xc0024efc50 pc=0xa48410 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0159bca80, 0x1, 0xf0, 0x20000100, 0x3e, 0x2b598565b9d0, 0x0, 0x0, 0xc0053fb140, 0xc0148938c0) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc0024efd38 sp=0xc0024efcd8 pc=0xa47eb4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0159bca80, 0x2, 0xc0159bca80) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc0024efe08 sp=0xc0024efd38 pc=0xa47798 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0159bca80, 0x13d5ba0, 0x0) pkg/sentry/kernel/task_run.go:327 +0xd8c fp=0xc0024eff60 sp=0xc0024efe08 pc=0xa3a10c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0159bca80, 0x3dcb) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc0024effd0 sp=0xc0024eff60 pc=0xa38c02 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0024effd8 sp=0xc0024effd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:374 +0x116