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

goroutine 246 [running]:
panic({0xc51560, 0x4000877410})
	GOROOT/src/runtime/panic.go:987 +0x3ac fp=0x4000a1b460 sp=0x4000a1b3a0 pc=0x450ac
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xffff4e63f5e0?, 0xd9ea00, 0xc9a9a0)
	GOROOT/src/runtime/iface.go:272 +0x70 fp=0x4000a1b490 sp=0x4000a1b460 pc=0x1a200
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).MkdirAt(0x400058af00, {0x1034760, 0x4000955500}, 0x40005aa480, {0xb708?, 0xa1?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:412 +0x648 fp=0x4000a1b6c0 sp=0x4000a1b490 pc=0x3d6c58
gvisor.dev/gvisor/pkg/sentry/fsimpl/devpts.(*filesystem).MkdirAt(0x4000610900?, {0x1034760?, 0x4000955500?}, 0x40005aa480?, {0xeb00?, 0x8b?})
	<autogenerated>:1 +0x30 fp=0x4000a1b700 sp=0x4000a1b6c0 pc=0x942740
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).MkdirAt(0x40007d8900?, {0x1034760, 0x4000955500}, 0x0?, 0x4000a1b8c8?, 0x4000a1b7b4)
	pkg/sentry/vfs/vfs.go:367 +0x184 fp=0x4000a1b760 sp=0x4000a1b700 pc=0x36c414
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.mkdirat(0x4000955500, 0x4?, 0x4000950100?, 0x1ff)
	pkg/sentry/syscalls/linux/sys_file.go:947 +0x1c4 fp=0x4000a1b8a0 sp=0x4000a1b760 pc=0x6af274
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mkdirat(0x4000955500?, 0x0?, {{0xffffffffffffff9c}, {0xe8d68de595e0}, {0x1ff}, {0xeef25b50e654}, {0xeef25b4b88e0}, {0xeef25b4b88e0}})
	pkg/sentry/syscalls/linux/sys_file.go:934 +0x50 fp=0x4000a1b8d0 sp=0x4000a1b8a0 pc=0x6af070
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4000955500, 0x22, {{0xffffffffffffff9c}, {0xe8d68de595e0}, {0x1ff}, {0xeef25b50e654}, {0xeef25b4b88e0}, {0xeef25b4b88e0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x678 fp=0x4000a1bc10 sp=0x4000a1b8d0 pc=0x56d2d8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4000955500, 0x0?, {{0xffffffffffffff9c}, {0xe8d68de595e0}, {0x1ff}, {0xeef25b50e654}, {0xeef25b4b88e0}, {0xeef25b4b88e0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x48 fp=0x4000a1bc70 sp=0x4000a1bc10 pc=0x56e5b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4000217d58?, 0x8967a0?, {{0xffffffffffffff9c}, {0xe8d68de595e0}, {0x1ff}, {0xeef25b50e654}, {0xeef25b4b88e0}, {0xeef25b4b88e0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x7c fp=0x4000a1bcd0 sp=0x4000a1bc70 pc=0x56e1bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x4000403c70?)
	pkg/sentry/kernel/task_syscall.go:257 +0x330 fp=0x4000a1bdd0 sp=0x4000a1bcd0 pc=0x56dee0
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x40008e4700?, 0x4000955500)
	pkg/sentry/kernel/task_run.go:269 +0x116c fp=0x4000a1bf20 sp=0x4000a1bdd0 pc=0x56105c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4000955500, 0x15)
	pkg/sentry/kernel/task_run.go:98 +0x250 fp=0x4000a1bfb0 sp=0x4000a1bf20 pc=0x55f850
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x4000a1bfd0 sp=0x4000a1bfb0 pc=0x56ba0c
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0x4000a1bfd0 sp=0x4000a1bfd0 pc=0x7a444
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:390 +0xf8