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

goroutine 834375 [running]:
panic(0xef1480, 0xc00047f6e0)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc000923608 sp=0xc000923550 pc=0x43432d
runtime.goPanicIndex(0x1, 0x1)
	GOROOT/src/runtime/panic.go:88 +0xa3 fp=0xc000923650 sp=0xc000923608 pc=0x432023
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).forEachMappingSlice(0xc000330300, 0x7ffd9000, 0x7ffff000, 0xc000923758, 0x2, 0x203000)
	pkg/sentry/pgalloc/pgalloc.go:662 +0x293 fp=0xc0009236e8 sp=0xc000923650 pc=0x6c4d43
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).MapInternal(0xc000330300, 0x7ffd9000, 0x7ffff000, 0x7f000100, 0x7ffff000, 0x0, 0x0, 0x0, 0x0, 0xc000923838)
	pkg/sentry/pgalloc/pgalloc.go:644 +0xd3 fp=0xc0009237c0 sp=0xc0009236e8 pc=0x6c4803
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).AllocateAndFill(0xc000330300, 0x26000, 0x1, 0x11175e0, 0xc00031fa80, 0x7f1e56aec000, 0xffffffffffffffff, 0x0, 0x26000)
	pkg/sentry/pgalloc/pgalloc.go:507 +0xa6 fp=0xc000923848 sp=0xc0009237c0 pc=0x6c3836
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsInternalLocked(0xc0014e6000, 0x113a040, 0xc0014fe000, 0xc0014e6080, 0x2, 0x74b000, 0x74c000, 0xc000000101, 0x5aeb7e, 0xc000923d70, ...)
	pkg/sentry/mm/pma.go:343 +0xbb2 fp=0xc000923cc0 sp=0xc000923848 pc=0x81d6b2
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsLocked(0xc0014e6000, 0x113a040, 0xc0014fe000, 0xc0014e6080, 0x2, 0x74b000, 0x74c000, 0x101, 0xc0014e6080, 0x3, ...)
	pkg/sentry/mm/pma.go:119 +0xe9 fp=0xc000923d80 sp=0xc000923cc0 pc=0x81c449
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc0014e6000, 0x113a040, 0xc0014fe000, 0x74bf04, 0x1000101, 0x7ffe1e1c2860, 0xc001ef6100, 0x101)
	pkg/sentry/mm/syscalls.go:57 +0x1ab fp=0xc000923e48 sp=0xc000923d80 pc=0x82eedb
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0014fe000, 0x1117ca0, 0x0)
	pkg/sentry/kernel/task_run.go:288 +0x94d fp=0xc000923f60 sp=0xc000923e48 pc=0x88b01d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0014fe000, 0xb698)
	pkg/sentry/kernel/task_run.go:92 +0x18b fp=0xc000923fd0 sp=0xc000923f60 pc=0x889fbb
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc000923fd8 sp=0xc000923fd0 pc=0x467d01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe