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

goroutine 141 [running]:
panic({0xb415a0, 0x40009107e0})
	GOROOT/src/runtime/panic.go:987 +0x3ac fp=0x40006bd3c0 sp=0x40006bd300 pc=0x4526c
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x0?, 0xc8eac0, 0xb8aa60)
	GOROOT/src/runtime/iface.go:272 +0x70 fp=0x40006bd3f0 sp=0x40006bd3c0 pc=0x1a200
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).MkdirAt(0x40003b4500, {0xeef2a0, 0x400001d500}, 0x4000434480, {0xf2a0?, 0xee?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:412 +0x560 fp=0x40006bd610 sp=0x40006bd3f0 pc=0x38ce60
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).MkdirAt(0x40004a6200?, {0xeef2a0?, 0x400001d500?}, 0x4000434480?, {0xc400?, 0x61?})
	<autogenerated>:1 +0x30 fp=0x40006bd650 sp=0x40006bd610 pc=0x6cb6d0
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0x400001d500?, {0xeef2a0, 0x400001d500}, 0x0?, 0x40006bd818?, 0x40006bd704)
	pkg/sentry/vfs/vfs.go:367 +0x134 fp=0x40006bd6b0 sp=0x40006bd650 pc=0x334b94
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0x400001d500, 0x4?, 0x4000010100?, 0x1ff)
	pkg/sentry/syscalls/linux/sys_file.go:947 +0x16c fp=0x40006bd7f0 sp=0x40006bd6b0 pc=0x5fc6ac
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0x400001d500?, 0x3da6ac?, {{0xffffffffffffff9c}, {0xec075041a5e0}, {0x1ff}, {0xd901fc445654}, {0xd901fc3ef8e0}, {0xd901fc3ef8e0}})
	pkg/sentry/syscalls/linux/sys_file.go:934 +0x2c fp=0x40006bd820 sp=0x40006bd7f0 pc=0x5fc4fc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x400001d500, 0x22, {{0xffffffffffffff9c}, {0xec075041a5e0}, {0x1ff}, {0xd901fc445654}, {0xd901fc3ef8e0}, {0xd901fc3ef8e0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x5a0 fp=0x40006bdc10 sp=0x40006bd820 pc=0x4e8e10
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x400001d500, 0xd901fc500000?, {{0xffffffffffffff9c}, {0xec075041a5e0}, {0x1ff}, {0xd901fc445654}, {0xd901fc3ef8e0}, {0xd901fc3ef8e0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x3c fp=0x40006bdc70 sp=0x40006bdc10 pc=0x4e9d0c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x3?, 0xd901fc518000?, {{0xffffffffffffff9c}, {0xec075041a5e0}, {0x1ff}, {0xd901fc445654}, {0xd901fc3ef8e0}, {0xd901fc3ef8e0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x58 fp=0x40006bdcd0 sp=0x40006bdc70 pc=0x4e9a28
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x4000672000?)
	pkg/sentry/kernel/task_syscall.go:257 +0x284 fp=0x40006bddd0 sp=0x40006bdcd0 pc=0x4e97d4
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x40004c2500?, 0x400001d500)
	pkg/sentry/kernel/task_run.go:269 +0xd70 fp=0x40006bdf20 sp=0x40006bddd0 pc=0x4dee10
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x400001d500, 0x15)
	pkg/sentry/kernel/task_run.go:98 +0x1d4 fp=0x40006bdfb0 sp=0x40006bdf20 pc=0x4dda54
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x40006bdfd0 sp=0x40006bdfb0 pc=0x4e78cc
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0x40006bdfd0 sp=0x40006bdfd0 pc=0x7a604
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:390 +0xe4