panic: runtime error: integer divide by zero goroutine 3972 gp=0xc000790540 m=13 mp=0xc000b00008 [running]: panic({0x1cb1ac0?, 0x2cbdcc0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000971060 sp=0xc000970fb0 pc=0x478708 runtime.panicdivide() bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:241 +0x3e fp=0xc000971080 sp=0xc000971060 pc=0x43b0fe gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*ringBuffer).init(0xc00161e510, {0x20c5fa0, 0xc000fdf908}, 0xc001f01470) pkg/sentry/socket/netstack/packetmmap/ring_buffer.go:62 +0x88e fp=0xc000971220 sp=0xc000971080 pc=0x10bb94e gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*Endpoint).Init(0xc00161e508, {0x20c5fa0, 0xc000fdf908}, {0xc001f01470, 0x1, 0x0, 0xc0007ed008, 0xc000e884f0, 0xc00181f4d0, 0x0, ...}) pkg/sentry/socket/netstack/packetmmap/endpoint.go:128 +0x913 fp=0xc000971308 sp=0xc000971220 pc=0x10b7b73 gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptPacket(0xc000fdf908, {0xc000971470?, 0xc000971480?}, {0x7f12623e9c40, 0xc000e88400}, 0x5, {0xc000fe041c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:2745 +0x56b fp=0xc000971430 sp=0xc000971308 pc=0x120dccb gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0xc000fdf908, {0x20d8038, 0xc000bf9540}, {0x7f12623e9c40, 0xc000e88400}, 0x107, 0x5, {0xc000fe041c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:1873 +0x366 fp=0xc000971490 sp=0xc000971430 pc=0x1206b26 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc000bf9540, 0xc000fdf908, 0x107, 0x5, {0xc000fe041c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:634 +0x6aa fp=0xc0009715b0 sp=0xc000971490 pc=0x11fc08a gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc000fdf908, 0x0?, {{0x3}, {0x107}, {0x5}, {0x200000000040}, {0x1c}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x46c fp=0xc0009716e8 sp=0xc0009715b0 pc=0x12cb74c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000fdf908, 0x36, {{0x3}, {0x107}, {0x5}, {0x200000000040}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc000971998 sp=0xc0009716e8 pc=0xff6c3f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000fdf908, 0x36, {{0x3}, {0x107}, {0x5}, {0x200000000040}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc000971a40 sp=0xc000971998 pc=0xff8d65 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000fdf908, 0x36, {{0x3}, {0x107}, {0x5}, {0x200000000040}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc000971ab0 sp=0xc000971a40 pc=0xff8687 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000fdf908) pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc000971bd0 sp=0xc000971ab0 pc=0xff81ea gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000fdf908?, 0xc000fdf908) pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc000971e78 sp=0xc000971bd0 pc=0xfe2a55 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000fdf908, 0x27f) pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc000971fb0 sp=0xc000971e78 pc=0xfdfd7b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:412 +0x45 fp=0xc000971fe0 sp=0xc000971fb0 pc=0xff4545 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000971fe8 sp=0xc000971fe0 pc=0x481a81 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 3937 pkg/sentry/kernel/task_start.go:412 +0x185