panic: runtime error: invalid memory address or nil pointer dereference
	panic: nested locking: vfs.virtualFilesystemMutex:
goroutine 18972 [running]:
gvisor.dev/gvisor/pkg/sentry/vfs.(*virtualFilesystemMutex).Lock(0xc0006bafd8)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/vfs/virtual_filesystem_mutex.go:33 +0x4d
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).lockMounts(0xc0006bafd8)
	pkg/sentry/vfs/vfs.go:1013 +0x3a
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc000b57080, {0x724618, 0xc0012e8000})
	pkg/sentry/vfs/mount.go:820 +0x75
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc000b57080, {0x724618, 0xc0012e8000})
	pkg/sentry/vfs/mount.go:815 +0xca
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc000b57080?, 0xc0010d1400?}, {0x724618, 0xc0012e8000})
	pkg/sentry/vfs/vfs.go:1086 +0x6f
panic({0x30b400?, 0x26a6c90?})
	GOROOT/src/runtime/panic.go:920 +0x270
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).PivotRoot(0xc0006bafd8, {0x724618?, 0xc0012e8000}, 0xc000a1b400?, 0xc000f32100?, 0x7?)
	pkg/sentry/vfs/mount.go:1058 +0x875
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.PivotRoot(0xc0012e8000, 0x124c62e?, {{0x20000280}, {0x200002c0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:425 +0x4c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0012e8000, 0x9b, {{0x20000280}, {0x200002c0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0xaff
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0012e8000, 0x1?, {{0x20000280}, {0x200002c0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000cb32c0?, 0x1255229?, {{0x20000280}, {0x200002c0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0xbd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0012e8000)
	pkg/sentry/kernel/task_syscall.go:257 +0x55b
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0012e8000?, 0xc0012e8000)
	pkg/sentry/kernel/task_run.go:269 +0x2387
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0012e8000, 0x5f8)
	pkg/sentry/kernel/task_run.go:98 +0x36a
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 18978
	pkg/sentry/kernel/task_start.go:391 +0x1ce