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-rw-r--r--arch/arm/mm/mmap.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index 2b7996401b0f..f5abc51c5a07 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -54,7 +54,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
* We enforce the MAP_FIXED case.
*/
if (flags & MAP_FIXED) {
- if (aliasing && flags & MAP_SHARED && addr & (SHMLBA - 1))
+ if (aliasing && flags & MAP_SHARED &&
+ (addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))
return -EINVAL;
return addr;
}