panic: runtime error: integer divide by zero goroutine 1418 gp=0xc000a13180 m=16 mp=0xc000a3c308 [running]: panic({0x1cb1ac0?, 0x2cbdcc0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc001393060 sp=0xc001392fb0 pc=0x478708 runtime.panicdivide() bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:241 +0x3e fp=0xc001393080 sp=0xc001393060 pc=0x43b0fe gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*ringBuffer).init(0xc000710790, {0x20c5fa0, 0xc000d35908}, 0xc0018bf3c0) pkg/sentry/socket/netstack/packetmmap/ring_buffer.go:62 +0x88e fp=0xc001393220 sp=0xc001393080 pc=0x10bb94e gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*Endpoint).Init(0xc000710788, {0x20c5fa0, 0xc000d35908}, {0xc0018bf3c0, 0x1, 0x1, 0xc000740808, 0xc000f9a6f0, 0xc001c1cb70, 0x0, ...}) pkg/sentry/socket/netstack/packetmmap/endpoint.go:128 +0x913 fp=0xc001393308 sp=0xc001393220 pc=0x10b7b73 gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptPacket(0xc000d35908, {0xc001393470?, 0xc001393480?}, {0x7f6d51088b20, 0xc000f9a600}, 0x5, {0xc000d3641c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:2745 +0x56b fp=0xc001393430 sp=0xc001393308 pc=0x120dccb gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0xc000d35908, {0x20d8038, 0xc000345400}, {0x7f6d51088b20, 0xc000f9a600}, 0x107, 0x5, {0xc000d3641c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:1873 +0x366 fp=0xc001393490 sp=0xc001393430 pc=0x1206b26 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc000345400, 0xc000d35908, 0x107, 0x5, {0xc000d3641c, 0x1c, 0x90}) pkg/sentry/socket/netstack/netstack.go:634 +0x6aa fp=0xc0013935b0 sp=0xc001393490 pc=0x11fc08a gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc000d35908, 0x4af9af?, {{0xc}, {0x107}, {0x5}, {0x200000000340}, {0x1c}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x46c fp=0xc0013936e8 sp=0xc0013935b0 pc=0x12cb74c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000d35908, 0x36, {{0xc}, {0x107}, {0x5}, {0x200000000340}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc001393998 sp=0xc0013936e8 pc=0xff6c3f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000d35908, 0x36, {{0xc}, {0x107}, {0x5}, {0x200000000340}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc001393a40 sp=0xc001393998 pc=0xff8d65 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000d35908, 0x36, {{0xc}, {0x107}, {0x5}, {0x200000000340}, {0x1c}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc001393ab0 sp=0xc001393a40 pc=0xff8687 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000d35908) pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc001393bd0 sp=0xc001393ab0 pc=0xff81ea gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000d35908?, 0xc000d35908) pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc001393e78 sp=0xc001393bd0 pc=0xfe2a55 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d35908, 0x93) pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc001393fb0 sp=0xc001393e78 pc=0xfdfd7b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:412 +0x45 fp=0xc001393fe0 sp=0xc001393fb0 pc=0xff4545 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001393fe8 sp=0xc001393fe0 pc=0x481a81 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 941 pkg/sentry/kernel/task_start.go:412 +0x185