panic: interface conversion: vfs.DentryImpl is *tmpfs.dentry, not *kernfs.Dentry

goroutine 467 [running]:
panic({0x3147c0, 0xc0008a0150})
	GOROOT/src/runtime/panic.go:987 +0x3ac fp=0xc000c5ef30 sp=0xc000c5ee70 pc=0x11fb56c
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0002bb4f0?, 0x468b00, 0x35ed20)
	GOROOT/src/runtime/iface.go:272 +0x70 fp=0xc000c5ef60 sp=0xc000c5ef30 pc=0x11d0420
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).MkdirAt(0xc0002bb4a0, {0x7ec2e0, 0xc000530a80}, 0xc000342900, {0xc300?, 0xc0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:412 +0x5ec fp=0xc000c5f1c0 sp=0xc000c5ef60 pc=0x16e574c
gvisor.dev/gvisor/pkg/sentry/fsimpl/sys.(*filesystem).MkdirAt(0xc0002bb4a0, {0x7ec2e0, 0xc000530a80}, 0xc000342900?, {0x12?, 0x0?})
	<autogenerated>:1 +0x60 fp=0xc000c5f220 sp=0xc000c5f1c0 pc=0x1edb730
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0xc000720000?, {0x7ec2e0, 0xc000530a80}, 0x0?, 0xc000c5f388, 0xc000c5f2fc)
	pkg/sentry/vfs/vfs.go:367 +0x230 fp=0xc000c5f2b0 sp=0xc000c5f220 pc=0x16612c0
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0xc000530a80, 0x12336e8?, 0xc000c5f458?, 0x1ff)
	pkg/sentry/syscalls/linux/sys_file.go:947 +0x184 fp=0xc000c5f430 sp=0xc000c5f2b0 pc=0x1a67924
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0xc000530a80?, 0x0?, {{0xffffffffffffff9c}, {0xe641065fe5e0}, {0x1ff}, {0xf188e921c654}, {0xf188e91c68e0}, {0xf188e91c68e0}})
	pkg/sentry/syscalls/linux/sys_file.go:934 +0x3c fp=0xc000c5f480 sp=0xc000c5f430 pc=0x1a6775c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000530a80, 0x22, {{0xffffffffffffff9c}, {0xe641065fe5e0}, {0x1ff}, {0xf188e921c654}, {0xf188e91c68e0}, {0xf188e91c68e0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x6f8 fp=0xc000c5f970 sp=0xc000c5f480 pc=0x18d9fd8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000530a80, 0xfffe1f000e08?, {{0xffffffffffffff9c}, {0xe641065fe5e0}, {0x1ff}, {0xf188e921c654}, {0xf188e91c68e0}, {0xf188e91c68e0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x50 fp=0xc000c5fa10 sp=0xc000c5f970 pc=0x18db650
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000c5fad8?, 0x12338a8?, {{0xffffffffffffff9c}, {0xe641065fe5e0}, {0x1ff}, {0xf188e921c654}, {0xf188e91c68e0}, {0xf188e91c68e0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x78 fp=0xc000c5fa90 sp=0xc000c5fa10 pc=0x18db178
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000530a80)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000c5fbc0 sp=0xc000c5fa90 pc=0x18dae1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000530a80?, 0xc000530a80)
	pkg/sentry/kernel/task_run.go:269 +0x13e0 fp=0xc000c5fe50 sp=0xc000c5fbc0 pc=0x18ca950
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000530a80, 0x12)
	pkg/sentry/kernel/task_run.go:98 +0x2fc fp=0xc000c5ffa0 sp=0xc000c5fe50 pc=0x18c8d9c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:390 +0x44 fp=0xc000c5ffd0 sp=0xc000c5ffa0 pc=0x18d83a4
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0xc000c5ffd0 sp=0xc000c5ffd0 pc=0x1232724
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:390 +0x180