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

goroutine 71016 [running]:
panic({0x1161fc0, 0xc0049106f0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0015a5428 sp=0xc0015a5368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77bf51?, 0x12b0a20, 0x11ae600)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0015a5450 sp=0xc0015a5428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0002df320, {0x1575998, 0xc000aeea80}, 0xc000da0000, {0xc0047b8580?, 0xc0021ffc00?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc0015a5688 sp=0xc0015a5450 pc=0x7e994a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0002c0100?, {0x1575998, 0xc000aeea80}, 0xc0055d5290?, 0xc000d4ac00?, 0xc0015a5840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0015a5708 sp=0xc0015a5688 pc=0x77e9e3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000aeea80, 0xb1afc0?, 0xc009c529c0?, 0xfeb5f88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc0015a5900 sp=0xc0015a5708 pc=0xaf76d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc000aeea80?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc0015a5940 sp=0xc0015a5900 pc=0xaf722b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000aeea80, 0x56, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0015a5c80 sp=0xc0015a5940 pc=0x9ac88b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000aeea80, 0x85?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0015a5ce0 sp=0xc0015a5c80 pc=0x9ade74
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0015a5d88?, 0x964aa6?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0015a5d40 sp=0xc0015a5ce0 pc=0x9ada65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000a4e0d0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0015a5e38 sp=0xc0015a5d40 pc=0x9ad72c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0047b8500?, 0xc000aeea80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc0015a5f60 sp=0xc0015a5e38 pc=0x99f3bf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000aeea80, 0xbd1)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0015a5fc0 sp=0xc0015a5f60 pc=0x99da1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0015a5fe0 sp=0xc0015a5fc0 pc=0x9aad0a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0015a5fe8 sp=0xc0015a5fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105