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

goroutine 1038780 [running]:
panic({0x115f780, 0xc003800360})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000d1f428 sp=0xc000d1f368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77b831?, 0x12adec0, 0x11abd20)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000d1f450 sp=0xc000d1f428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc007d6a120, {0x15729f8, 0xc007c8b500}, 0xc005a1a000, {0xc00a2e0000?, 0xc001fb4400?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000d1f688 sp=0xc000d1f450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000632680?, {0x15729f8, 0xc007c8b500}, 0xc0036a0000?, 0xc006b55f00?, 0xc000d1f840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000d1f708 sp=0xc000d1f688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc007c8b500, 0x0?, 0x0?, 0x545bff88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000d1f900 sp=0xc000d1f708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc007c8b500?, {{0x20000080}, {0x20000240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc000d1f940 sp=0xc000d1f900 pc=0xaf50cb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007c8b500, 0x56, {{0x20000080}, {0x20000240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000d1fc80 sp=0xc000d1f940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007c8b500, 0x0?, {{0x20000080}, {0x20000240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000d1fce0 sp=0xc000d1fc80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0002f0310?, 0xc000d1fe28?, {{0x20000080}, {0x20000240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000d1fd40 sp=0xc000d1fce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc005dd2f20?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000d1fe38 sp=0xc000d1fd40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0094fdf00?, 0xc007c8b500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000d1ff60 sp=0xc000d1fe38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007c8b500, 0x4a76)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000d1ffc0 sp=0xc000d1ff60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000d1ffe0 sp=0xc000d1ffc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000d1ffe8 sp=0xc000d1ffe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105