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

goroutine 1056614 [running]:
panic({0x115e740, 0xc00b96c300})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0070b9428 sp=0xc0070b9368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77b831?, 0x12ace60, 0x11aace0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0070b9450 sp=0xc0070b9428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc004011b00, {0x15714d8, 0xc00582ea80}, 0xc004310000, {0xc004ab9d00?, 0xc007e58500?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc0070b9688 sp=0xc0070b9450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0002a4280?, {0x15714d8, 0xc00582ea80}, 0xc00530cb40?, 0xc002df0700?, 0xc0070b9840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0070b9708 sp=0xc0070b9688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00582ea80, 0xaed37f?, 0xc00582ea80?, 0xdb7aaf88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc0070b9900 sp=0xc0070b9708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc00582ea80?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc0070b9940 sp=0xc0070b9900 pc=0xaf50cb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00582ea80, 0x56, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0070b9c80 sp=0xc0070b9940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00582ea80, 0x85?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0070b9ce0 sp=0xc0070b9c80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8299cf?, 0x2?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0070b9d40 sp=0xc0070b9ce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00244a000?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0070b9e38 sp=0xc0070b9d40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc009a88480?, 0xc00582ea80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc0070b9f60 sp=0xc0070b9e38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00582ea80, 0x9026)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0070b9fc0 sp=0xc0070b9f60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0070b9fe0 sp=0xc0070b9fc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0070b9fe8 sp=0xc0070b9fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105