panic: munmap(2000d000, 0)) failed: invalid argument

goroutine 42 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Unmap(0xc420341e60, 0x2000d000, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:556 +0x3c6
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).unmapASLocked(0xc4204c2000, 0x2000d000, 0x2000d000)
	pkg/sentry/mm/address_space.go:217 +0x74
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).movePMAsLocked(0xc4204c2000, 0x2000d000, 0x2000d000, 0x20007000, 0x20008000)
	pkg/sentry/mm/pma.go:628 +0x4d8
gvisor.googlesource.com/gvisor/pkg/sentry/mm.(*MemoryManager).MRemap(0xc4204c2000, 0xc74760, 0xc420410900, 0x2000d000, 0xfffffffffffffe74, 0x1000, 0x2, 0x20007000, 0x0, 0x0, ...)
	pkg/sentry/mm/syscalls.go:464 +0x8e8
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Mremap(0xc420410900, 0x2000d000, 0xfffffffffffffe74, 0x1000, 0x3, 0x20007000, 0x4002e0, 0x428854, 0xbdd358, 0xc4204adc08, ...)
	pkg/sentry/syscalls/linux/sys_mmap.go:137 +0xc6
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc420410900, 0x19, 0x2000d000, 0xfffffffffffffe74, 0x1000, 0x3, 0x20007000, 0x4002e0, 0xc42020e380, 0xbb4e80, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x307
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc420410900, 0x19, 0x2000d000, 0xfffffffffffffe74, 0x1000, 0x3, 0x20007000, 0x4002e0, 0x20007000, 0x4002e0)
	pkg/sentry/kernel/task_syscall.go:278 +0x62
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc420410900, 0x19, 0x2000d000, 0xfffffffffffffe74, 0x1000, 0x3, 0x20007000, 0x4002e0, 0xc67980, 0xc4204ade00)
	pkg/sentry/kernel/task_syscall.go:241 +0x91
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc420410900, 0x2, 0xc420341e60)
	pkg/sentry/kernel/task_syscall.go:216 +0x10c
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc420410900, 0xc67980, 0x0)
	pkg/sentry/kernel/task_run.go:217 +0xed8
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc420410900, 0x8)
	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:251 +0x100