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-rw-r--r--arch/mips/mm/mmap.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 2f616ebeb7e0..d79f2b432318 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -201,8 +201,13 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
return ret;
}
-int __virt_addr_valid(const volatile void *kaddr)
+bool __virt_addr_valid(const volatile void *kaddr)
{
+ unsigned long vaddr = (unsigned long)kaddr;
+
+ if ((vaddr < PAGE_OFFSET) || (vaddr >= MAP_BASE))
+ return false;
+
return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
}
EXPORT_SYMBOL_GPL(__virt_addr_valid);