panic: invalid allocation length: 0x0

goroutine 736925 [running]:
panic({0xfe3ca0, 0xc0069dabd0})
	GOROOT/src/runtime/panic.go:1147 +0x3a8 fp=0xc000763090 sp=0xc000762fd0 pc=0x435148
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).Allocate(0xc0053f4c00, 0x1, {0xc0053f4c00, 0x0})
	pkg/sentry/pgalloc/pgalloc.go:417 +0x545 fp=0xc0007631a0 sp=0xc000763090 pc=0x7d0865
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsInternalLocked(0xc003e6b000, {0x13919b0, 0xc003b44000}, {0xc004133000, 0x895527}, {0x9acd5a, 0x0}, {0x0, 0x1, 0x0})
	pkg/sentry/mm/pma.go:243 +0x1746 fp=0xc0007635c8 sp=0xc0007631a0 pc=0x87dfc6
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsLocked(0x99a2cf, {0x13919b0, 0xc003b44000}, {0xc004133000, 0xc000763698}, {0x99a1e6, 0x874e20}, {0x0, 0x1, 0x0})
	pkg/sentry/mm/pma.go:125 +0xbf fp=0xc000763658 sp=0xc0007635c8 pc=0x87c29f
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc003e6b000, {0x13919b0, 0xc003b44000}, {0x0, 0x0}, {0x0, 0xcb, 0xf2}, 0x6, 0x12112b0)
	pkg/sentry/mm/io.go:542 +0x2e5 fp=0xc000763748 sp=0xc000763658 pc=0x877485
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).EnsurePMAsExist(0x561a2cef4f68, {0x13919b0, 0xc003b44000}, 0x0, 0xc006108540, {0xa0, 0x4d})
	pkg/sentry/mm/io.go:322 +0x77 fp=0xc000763790 sp=0xc000763748 pc=0x8762f7
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.getdents(0xc003b44000, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}, 0x0)
	pkg/sentry/syscalls/linux/vfs2/getdents.go:53 +0x131 fp=0xc000763858 sp=0xc000763790 pc=0xcb3e31
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Getdents(0xc003b44000, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/getdents.go:31 +0x38 fp=0xc0007638a8 sp=0xc000763858 pc=0xcb3c78
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc003b44000, 0x4e, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x825 fp=0xc000763cb0 sp=0xc0007638a8 pc=0x9b7ae5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc003b44000, 0x0, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4d fp=0xc000763d20 sp=0xc000763cb0 pc=0x9b8e0d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x13a22c8, 0xc005bf9d10, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc000763d80 sp=0xc000763d20 pc=0x9b8ac5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc003b44000)
	pkg/sentry/kernel/task_syscall.go:257 +0x31a fp=0xc000763e48 sp=0xc000763d80 pc=0x9b87fa
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0022a3e00, 0xc003b44000)
	pkg/sentry/kernel/task_run.go:247 +0xe45 fp=0xc000763f70 sp=0xc000763e48 pc=0x9ac8c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc003b44000)
	pkg/sentry/kernel/task_run.go:90 +0x1a2 fp=0xc000763fc8 sp=0xc000763f70 pc=0x9ab422
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start·dwrap·239()
	pkg/sentry/kernel/task_start.go:364 +0x26 fp=0xc000763fe0 sp=0xc000763fc8 pc=0x9b6246
runtime.goexit()
	src/runtime/asm_amd64.s:1581 +0x1 fp=0xc000763fe8 sp=0xc000763fe0 pc=0x4692a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:364 +0xe7