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

goroutine 8715 [running]:
panic(0xef1480, 0xc0003486e0)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc000a2b608 sp=0xc000a2b550 pc=0x43432d
runtime.goPanicIndex(0x1, 0x1)
	GOROOT/src/runtime/panic.go:88 +0xa3 fp=0xc000a2b650 sp=0xc000a2b608 pc=0x432023
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).forEachMappingSlice(0xc0003b0700, 0x7fe8a000, 0x7ff4f000, 0xc000a2b758, 0x0, 0x203000)
	pkg/sentry/pgalloc/pgalloc.go:662 +0x293 fp=0xc000a2b6e8 sp=0xc000a2b650 pc=0x6c4d43
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).MapInternal(0xc0003b0700, 0x7fe8a000, 0x7ff4f000, 0x7f000100, 0x7ff4f000, 0x0, 0x0, 0x0, 0x0, 0xc000a2b838)
	pkg/sentry/pgalloc/pgalloc.go:644 +0xd3 fp=0xc000a2b7c0 sp=0xc000a2b6e8 pc=0x6c4803
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).AllocateAndFill(0xc0003b0700, 0xc5000, 0x1, 0x11175e0, 0xc0013701a0, 0x7fd74d479000, 0xffffffffffffffff, 0x0, 0xc5000)
	pkg/sentry/pgalloc/pgalloc.go:507 +0xa6 fp=0xc000a2b848 sp=0xc000a2b7c0 pc=0x6c3836
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsInternalLocked(0xc0008b8000, 0x113a040, 0xc000616a80, 0xc0008b8080, 0xc, 0x7feb2a8c4000, 0x7feb2a8c5000, 0xc000000101, 0x5aeb7e, 0xc000a2bd70, ...)
	pkg/sentry/mm/pma.go:343 +0xbb2 fp=0xc000a2bcc0 sp=0xc000a2b848 pc=0x81d6b2
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsLocked(0xc0008b8000, 0x113a040, 0xc000616a80, 0xc0008b8080, 0xc, 0x7feb2a8c4000, 0x7feb2a8c5000, 0x101, 0xc0008b8080, 0xd, ...)
	pkg/sentry/mm/pma.go:119 +0xe9 fp=0xc000a2bd80 sp=0xc000a2bcc0 pc=0x81c449
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).HandleUserFault(0xc0008b8000, 0x113a040, 0xc000616a80, 0x7feb2a8c4a68, 0x1000101, 0x7feb2a8c4a70, 0xc0011f0200, 0x101)
	pkg/sentry/mm/syscalls.go:57 +0x1ab fp=0xc000a2be48 sp=0xc000a2bd80 pc=0x82eedb
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000616a80, 0x1117ca0, 0x0)
	pkg/sentry/kernel/task_run.go:288 +0x94d fp=0xc000a2bf60 sp=0xc000a2be48 pc=0x88b01d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000616a80, 0x32)
	pkg/sentry/kernel/task_run.go:92 +0x18b fp=0xc000a2bfd0 sp=0xc000a2bf60 pc=0x889fbb
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc000a2bfd8 sp=0xc000a2bfd0 pc=0x467d01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe