On Wed, Oct 19, 2005 at 11:22:22PM +0900, Atsushi Nemoto wrote: > BTW, sparse complains for this "unsigned long __user addr". > > asmlinkage int sys_cacheflush(unsigned long __user addr, > unsigned long bytes, unsigned int cache) > > /work/git/linux-mips/arch/mips/mm/cache.c:59:7: warning: dereference of noderef expression > > I suppose the "unsigned long __user addr" means that the "addr" > variable itself is an userspace object. So its usage is wrong, isn't > it? It didn't complain about this use in the past. Anyway, time to do another pass with sparse over the code; sparse developers have invented alot of new creative warnings ;-) Ralf
