panic: invalid allocation length: 0x0

goroutine 3724974 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/filemem.(*FileMem).Allocate(0xc4202a6000, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/platform/filemem/filemem.go:252 +0x6bb
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Registry).newShm(0xc4205b9560, 0xc68dc0, 0xc42107e400, 0xf3c, 0x0, 0x0, 0x0, 0x0, 0x594e76fe, 0xc4a1d82ad0, ...)
	pkg/sentry/kernel/shm/shm.go:185 +0xc0
gvisor.googlesource.com/gvisor/pkg/sentry/kernel/shm.(*Registry).FindOrCreate(0xc4205b9560, 0xc68dc0, 0xc42107e400, 0xf3c, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/shm/shm.go:174 +0x259
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Shmget(0xc42107e400, 0x0, 0x0, 0x0, 0x20b39000, 0x0, 0x0, 0x202, 0xc4a1d82c10, 0x428854, ...)
	pkg/sentry/syscalls/linux/sys_shm.go:38 +0x103
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc42107e400, 0x1d, 0x0, 0x0, 0x0, 0x20b39000, 0x0, 0x0, 0x0, 0xba7ee0, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x307
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc42107e400, 0x1d, 0x0, 0x0, 0x0, 0x20b39000, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:280 +0x62
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc42107e400, 0x1d, 0x0, 0x0, 0x0, 0x20b39000, 0x0, 0x0, 0xc5bbc0, 0x0)
	pkg/sentry/kernel/task_syscall.go:241 +0x91
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc42107e400, 0x2, 0xc4203f26c0)
	pkg/sentry/kernel/task_syscall.go:216 +0x142
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc42107e400, 0xc5bbc0, 0x0)
	pkg/sentry/kernel/task_run.go:219 +0xe56
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc42107e400, 0x3d4e)
	pkg/sentry/kernel/task_run.go:95 +0x174
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:258 +0x100