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

goroutine 105 [running]:
panic({0x31eb20, 0xc0008e22a0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000028e90 sp=0xc000028dd0 pc=0x12475fa
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc000810de8?, 0x473500, 0x36bd80)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000028eb8 sp=0xc000028e90 pc=0x121aadc
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00033eb40, {0x833c78, 0xc0008d4000}, 0xc00023db00, {0xc00066b700?, 0xc000544230?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xa4e fp=0xc000029118 sp=0xc000028eb8 pc=0x182524e
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc00033eb40, {0x833c78, 0xc0008d4000}, 0x1281605?, {0xc00066b700?, 0xc000544230?})
	<autogenerated>:1 +0x8a fp=0xc000029180 sp=0xc000029118 pc=0x1dc0a0a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0008d48a0?, {0x833c78, 0xc0008d4000}, 0xc000810d80?, 0xc000011700?, 0xc0000293f8)
	pkg/sentry/vfs/vfs.go:296 +0x31d fp=0xc000029230 sp=0xc000029180 pc=0x1789fbd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0008d4000, 0x1281605?, 0x14414d2?, 0x12815d7?, 0x101aa6678?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x38c fp=0xc0000294a8 sp=0xc000029230 pc=0x1c8d68c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc000029540?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x48 fp=0xc000029500 sp=0xc0000294a8 pc=0x1c8d2a8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0008d4000, 0x109, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc0000299e0 sp=0xc000029500 pc=0x1aa6f99
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0008d4000, 0x0?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc000029a78 sp=0xc0000299e0 pc=0x1aa8d7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0008aa340?, 0xc0008b8000?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc000029af0 sp=0xc000029a78 pc=0x1aa872f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0008d4000)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc000029c18 sp=0xc000029af0 pc=0x1aa82c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0008d4000?, 0xc0008d4000)
	pkg/sentry/kernel/task_run.go:259 +0x1b76 fp=0xc000029ec8 sp=0xc000029c18 pc=0x1a92d96
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0008d4000, 0xf)
	pkg/sentry/kernel/task_run.go:94 +0x37b fp=0xc000029fb0 sp=0xc000029ec8 pc=0x1a9087b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000029fe0 sp=0xc000029fb0 pc=0x1aa4a88
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000029fe8 sp=0xc000029fe0 pc=0x127e681
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad