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

goroutine 309417 [running]:
panic({0x1161c80, 0xc001497620})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc001579428 sp=0xc001579368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77bef1?, 0x12b0480, 0x11ae220)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc001579450 sp=0xc001579428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000f90fc0, {0x1574f18, 0xc007a6ca80}, 0xc000238d80, {0xc00861dc80?, 0xc00b1cb770?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc001579688 sp=0xc001579450 pc=0x7e98ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000224280?, {0x1574f18, 0xc007a6ca80}, 0xc0081c8870?, 0xc007ee3000?, 0xc001579840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc001579708 sp=0xc001579688 pc=0x77e983
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc007a6ca80, 0x7a6ca80?, 0xc007a6ca80?, 0x54228f8c?, 0xffffffffffffffff?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc001579900 sp=0xc001579708 pc=0xaf7275
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc007a6ca80?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc001579940 sp=0xc001579900 pc=0xaf6dcb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007a6ca80, 0x56, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc001579c80 sp=0xc001579940 pc=0x9ac82b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007a6ca80, 0x85?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc001579ce0 sp=0xc001579c80 pc=0x9ade14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001579d88?, 0x964a46?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc001579d40 sp=0xc001579ce0 pc=0x9ada05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00333e680?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc001579e38 sp=0xc001579d40 pc=0x9ad6cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00861da80?, 0xc007a6ca80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc001579f60 sp=0xc001579e38 pc=0x99f35f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007a6ca80, 0x270d)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc001579fc0 sp=0xc001579f60 pc=0x99d9bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc001579fe0 sp=0xc001579fc0 pc=0x9aacaa
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc001579fe8 sp=0xc001579fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105