r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')
mount_setattr(0xffffffffffffff9c, 0x0, 0x0, &(0x7f0000001480)={0x10000e, 0x0, 0x0, {r0}}, 0x20)