panic: invalid allocation length: 0x0

goroutine 20621 gp=0xc003755880 m=77 mp=0xc00742e708 [running]:
panic({0x1b526a0?, 0xc0032106c0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc0008c8f30 sp=0xc0008c8e80 pc=0x478708
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).Allocate(0xc00064d008, 0x0, {0x1, 0x6, 0x0, 0x0, 0x0, 0x0})
	pkg/sentry/pgalloc/pgalloc.go:639 +0x89c fp=0xc0008c9088 sp=0xc0008c8f30 pc=0xb635bc
gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*ringBuffer).init(0xc0001eaf10, {0x200a060, 0xc0015b6008}, 0xc007ff99d0)
	pkg/sentry/socket/netstack/packetmmap/ring_buffer.go:78 +0x618 fp=0xc0008c9218 sp=0xc0008c9088 pc=0x100adf8
gvisor.dev/gvisor/pkg/sentry/socket/netstack/packetmmap.(*Endpoint).Init(0xc0001eaf08, {0x200a060, 0xc0015b6008}, {0xc007ff99d0, 0x1, 0x0, 0xc003697008, 0xc00151e0f0, 0xc005936690, 0x0, ...})
	pkg/sentry/socket/netstack/packetmmap/endpoint.go:128 +0x787 fp=0xc0008c9300 sp=0xc0008c9218 pc=0x1007807
gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptPacket(0xc0015b6008, {0xc0008c9458?, 0xc0008c9480?}, {0x7fbdb5130130, 0xc00151e000}, 0x5, {0xc0015b6b1c, 0x10, 0x90})
	pkg/sentry/socket/netstack/netstack.go:2745 +0x9ba fp=0xc0008c9430 sp=0xc0008c9300 pc=0x114c9ba
gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0xc0015b6008, {0x201c0f8, 0xc002f71680}, {0x7fbdb5130130, 0xc00151e000}, 0x107, 0x5, {0xc0015b6b1c, 0x10, 0x90})
	pkg/sentry/socket/netstack/netstack.go:1873 +0x2e5 fp=0xc0008c9490 sp=0xc0008c9430 pc=0x1144c45
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc002f71680, 0xc0015b6008, 0x107, 0x5, {0xc0015b6b1c, 0x10, 0x90})
	pkg/sentry/socket/netstack/netstack.go:634 +0x608 fp=0xc0008c95b0 sp=0xc0008c9490 pc=0x113bee8
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc0015b6008, 0x0?, {{0x4}, {0x107}, {0x5}, {0x200000000900}, {0x10}, {0x0}})
	pkg/sentry/syscalls/linux/sys_socket.go:551 +0x3b5 fp=0xc0008c96c8 sp=0xc0008c95b0 pc=0x1212755
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0015b6008, 0x36, {{0x4}, {0x107}, {0x5}, {0x200000000900}, {0x10}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x995 fp=0xc0008c9960 sp=0xc0008c96c8 pc=0xf52b95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0015b6008, 0x36, {{0x4}, {0x107}, {0x5}, {0x200000000900}, {0x10}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x72 fp=0xc0008c9a08 sp=0xc0008c9960 pc=0xf549f2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0015b6008, 0x36, {{0x4}, {0x107}, {0x5}, {0x200000000900}, {0x10}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x94 fp=0xc0008c9a78 sp=0xc0008c9a08 pc=0xf543f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0015b6008)
	pkg/sentry/kernel/task_syscall.go:258 +0x4b0 fp=0xc0008c9b98 sp=0xc0008c9a78 pc=0xf53f90
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0015b6008?, 0xc0015b6008)
	pkg/sentry/kernel/task_run.go:269 +0x1fae fp=0xc0008c9e70 sp=0xc0008c9b98 pc=0xf3fece
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0015b6008, 0x1393)
	pkg/sentry/kernel/task_run.go:97 +0x4fb fp=0xc0008c9fb0 sp=0xc0008c9e70 pc=0xf3d53b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:412 +0x45 fp=0xc0008c9fe0 sp=0xc0008c9fb0 pc=0xf50965
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0008c9fe8 sp=0xc0008c9fe0 pc=0x481a81
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 23107
	pkg/sentry/kernel/task_start.go:412 +0x165