panic: runtime error: index out of range [1] with length 1

goroutine 220685 [running]:
panic(0xef1480, 0xc003195760)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc00095da70 sp=0xc00095d9b8 pc=0x43432d
runtime.goPanicIndex(0x1, 0x1)
	GOROOT/src/runtime/panic.go:88 +0xa3 fp=0xc00095dab8 sp=0xc00095da70 pc=0x432023
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).forEachMappingSlice(0xc000349500, 0x7ff4f000, 0x7ffff000, 0xc00095dbc0, 0x7f66c9079b3f, 0x0)
	pkg/sentry/pgalloc/pgalloc.go:662 +0x293 fp=0xc00095db50 sp=0xc00095dab8 pc=0x6c4d43
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).MapInternal(0xc000349500, 0x7ff4f000, 0x7ffff000, 0x101, 0x101, 0x0, 0x0, 0x0, 0x112a4a0, 0xc000349500)
	pkg/sentry/pgalloc/pgalloc.go:644 +0xd3 fp=0xc00095dc28 sp=0xc00095db50 pc=0x6c4803
gvisor.dev/gvisor/pkg/sentry/platform/kvm.(*addressSpace).MapFile(0xc0030195e0, 0xb50000, 0x112a4a0, 0xc000349500, 0x7ff4f000, 0x7ffff000, 0x101, 0x0, 0x0)
	pkg/sentry/platform/kvm/address_space.go:167 +0xf2 fp=0xc00095dd08 sp=0xc00095dc28 pc=0xc0a652
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).mapASLocked(0xc002e24000, 0xc002e24800, 0x5, 0xb50000, 0xb51000, 0xb50000, 0xb51000, 0x100)
	pkg/sentry/mm/address_space.go:205 +0x1ac fp=0xc00095dd80 sp=0xc00095dd08 pc=0x80bc5c
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc002e24000, 0x113a040, 0xc002e3c000, 0xb50004, 0x1000100, 0x7f66c9079860, 0xc005696d18, 0x100)
	pkg/sentry/mm/syscalls.go:69 +0x28d fp=0xc00095de48 sp=0xc00095dd80 pc=0x82efbd
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc002e3c000, 0x1117ca0, 0x0)
	pkg/sentry/kernel/task_run.go:288 +0x94d fp=0xc00095df60 sp=0xc00095de48 pc=0x88b01d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002e3c000, 0xe53)
	pkg/sentry/kernel/task_run.go:92 +0x18b fp=0xc00095dfd0 sp=0xc00095df60 pc=0x889fbb
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc00095dfd8 sp=0xc00095dfd0 pc=0x467d01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe