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

goroutine 230 [running]:
panic({0xc51560, 0x4000911c50})
	GOROOT/src/runtime/panic.go:987 +0x3ac fp=0x4000621460 sp=0x40006213a0 pc=0x450ac
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xffff2e98b5e0?, 0xd9ea00, 0xc9a9a0)
	GOROOT/src/runtime/iface.go:272 +0x70 fp=0x4000621490 sp=0x4000621460 pc=0x1a200
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).MkdirAt(0x400037f400, {0x1034760, 0x40007e6a80}, 0x4000576000, {0x1708?, 0x62?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:412 +0x648 fp=0x40006216c0 sp=0x4000621490 pc=0x3d6c58
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).MkdirAt(0x4000525a80?, {0x1034760?, 0x40007e6a80?}, 0x4000576000?, {0x7900?, 0x6e?})
	<autogenerated>:1 +0x30 fp=0x4000621700 sp=0x40006216c0 pc=0x797880
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0x4000367400?, {0x1034760, 0x40007e6a80}, 0x0?, 0x40006218c8?, 0x40006217b4)
	pkg/sentry/vfs/vfs.go:367 +0x184 fp=0x4000621760 sp=0x4000621700 pc=0x36c414
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0x40007e6a80, 0x4?, 0x40007e0100?, 0x1ff)
	pkg/sentry/syscalls/linux/sys_file.go:947 +0x1c4 fp=0x40006218a0 sp=0x4000621760 pc=0x6af274
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0x40007e6a80?, 0x0?, {{0xffffffffffffff9c}, {0xfce2f1e115e0}, {0x1ff}, {0xec869e367654}, {0xec869e3118e0}, {0xec869e3118e0}})
	pkg/sentry/syscalls/linux/sys_file.go:934 +0x50 fp=0x40006218d0 sp=0x40006218a0 pc=0x6af070
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40007e6a80, 0x22, {{0xffffffffffffff9c}, {0xfce2f1e115e0}, {0x1ff}, {0xec869e367654}, {0xec869e3118e0}, {0xec869e3118e0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x678 fp=0x4000621c10 sp=0x40006218d0 pc=0x56d2d8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40007e6a80, 0x0?, {{0xffffffffffffff9c}, {0xfce2f1e115e0}, {0x1ff}, {0xec869e367654}, {0xec869e3118e0}, {0xec869e3118e0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x48 fp=0x4000621c70 sp=0x4000621c10 pc=0x56e5b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x40006e5d58?, 0x8967a0?, {{0xffffffffffffff9c}, {0xfce2f1e115e0}, {0x1ff}, {0xec869e367654}, {0xec869e3118e0}, {0xec869e3118e0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x7c fp=0x4000621cd0 sp=0x4000621c70 pc=0x56e1bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x400057fad0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x330 fp=0x4000621dd0 sp=0x4000621cd0 pc=0x56dee0
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x400090d300?, 0x40007e6a80)
	pkg/sentry/kernel/task_run.go:269 +0x116c fp=0x4000621f20 sp=0x4000621dd0 pc=0x56105c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40007e6a80, 0x14)
	pkg/sentry/kernel/task_run.go:98 +0x250 fp=0x4000621fb0 sp=0x4000621f20 pc=0x55f850
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x4000621fd0 sp=0x4000621fb0 pc=0x56ba0c
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0x4000621fd0 sp=0x4000621fd0 pc=0x7a444
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:390 +0xf8