panic: runtime error: integer divide by zero goroutine 236220 gp=0xc00212dc00 m=36 mp=0xc000d4e308 [running]: panic({0x12eb2e0?, 0x23f4b00?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc001cdd678 sp=0xc001cdd5c8 pc=0x4740c8 runtime.panicdivide() bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:241 +0x3e fp=0xc001cdd698 sp=0xc001cdd678 pc=0x43945e gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*ringBuffer).init(0xba9f8e?, {0x171d4a0?, 0xc0014c6588?}, 0xba9fe0?) pkg/sentry/socket/netstack/packetmmap/ring_buffer.go:62 +0x44a fp=0xc001cdd760 sp=0xc001cdd698 pc=0xb9462a gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*Endpoint).Init(0xc0037fe000?, {0x171d4a0?, 0xc0014c6588?}, {0xc003faf030, 0x1, 0x0, 0xc000d86008, 0xc0037fe0f0, 0xc001e88270, 0x0, ...}) pkg/sentry/socket/netstack/packetmmap/endpoint.go:128 +0x388 fp=0xc001cdd7b0 sp=0xc001cdd760 pc=0xb91a68 gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptPacket(0xc0014c6588, {0xc001cdd8d8?, 0x40e7ff?}, {0x7f7ad2f0a9c8, 0xc0037fe000}, 0xc001cdd901?, {0xc0014c709c?, 0xc001cdd908?, 0xc001c78008?}) pkg/sentry/socket/netstack/netstack.go:2745 +0x3c5 fp=0xc001cdd890 sp=0xc001cdd7b0 pc=0xc75b25 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x1000000af77b9?, {0x172f538?, 0xc001777b80?}, {0x7f7ad2f0a9c8?, 0xc0037fe000?}, 0x171d4a0?, 0xc0014c6588?, {0xc0014c709c, 0x10, 0x90}) pkg/sentry/socket/netstack/netstack.go:1873 +0x1b1 fp=0xc001cdd8e8 sp=0xc001cdd890 pc=0xc71a91 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc001777b80, 0xc0014c6588?, 0x107?, 0x5?, {0xc0014c709c, 0x10?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:634 +0x265 fp=0xc001cdd998 sp=0xc001cdd8e8 pc=0xc6aa85 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc0014c6588, 0xc00212dc00?, {{0x9}, {0x107}, {0x5}, {0x2000000000c0}, {0x10}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x2f5 fp=0xc001cdda78 sp=0xc001cdd998 pc=0xcfe495 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0014c6588, 0x36, {{0x9}, {0x107}, {0x5}, {0x2000000000c0}, {0x10}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc001cddca8 sp=0xc001cdda78 pc=0xb1ebcb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0014c6588, 0x36, {{0x9}, {0x107}, {0x5}, {0x2000000000c0}, {0x10}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc001cddd00 sp=0xc001cddca8 pc=0xb2016e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0014c6588, 0x36, {{0x9}, {0x107}, {0x5}, {0x2000000000c0}, {0x10}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc001cddd50 sp=0xc001cddd00 pc=0xb1fd1d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002d25810?) pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc001cdde28 sp=0xc001cddd50 pc=0xb1fa09 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001ddb440?, 0xc0014c6588) pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc001cddf38 sp=0xc001cdde28 pc=0xb13105 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0014c6588, 0x8fb5) pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc001cddfc0 sp=0xc001cddf38 pc=0xb1171d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:412 +0x25 fp=0xc001cddfe0 sp=0xc001cddfc0 pc=0xb1d145 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001cddfe8 sp=0xc001cddfe0 pc=0x47d1a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 236208 pkg/sentry/kernel/task_start.go:412 +0xd9