BUG at dcache.h:276! Causing oops when I rmmod a nand module having mulitple partitions

[Brad Beveridge]

Hi all.  Here is the basic problem, I have a nand module that I want to 
insmod & rmmod.  It has multiple partitions that look like
static struct mtd_partition partition_info1[] = {   
        { name: "part1",                   
          offset: 0,                                                     
          size: 4 * 1024 * 1024 },                                     
        { name: "part2",                      
          offset: 4 * 1024 * 
1024,                                          
          size: 4 * 1024 * 1024 
},                                          
        { name: "part3",                             
                  offset: 8 * 1024 * 
1024,                                  
                  size: MTDPART_SIZ_FULL }
};

I call nand_scan on my device, and then add_mtd_partitions.
When I rmmod the module I simply call nand_release, because it 
automatically calls del_mtd_partitions.

However, this causes a BUG in dcache.h:276.
There is no oops if I only use a single partition.

Any thoughts on what might be going on?

Cheers
Brad