[PATCH v5 2/3] fix hugetlb memory check in vma_dump_size()

[Naoya Horiguchi]

Documentation/filesystems/proc.txt says about coredump_filter bitmask,

  Note bit 0-4 doesn't effect any hugetlb memory. hugetlb memory are only
  effected by bit 5-6.

However current code can go into the subsequent flag checks of bit 0-4
for vma(VM_HUGETLB). So this patch inserts 'return' and makes it work
as written in the document.

Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
 fs/binfmt_elf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git v3.9-rc3.orig/fs/binfmt_elf.c v3.9-rc3/fs/binfmt_elf.c
index 3939829..86af964 100644
--- v3.9-rc3.orig/fs/binfmt_elf.c
+++ v3.9-rc3/fs/binfmt_elf.c
@@ -1137,6 +1137,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 			goto whole;
 		if (!(vma->vm_flags & VM_SHARED) && FILTER(HUGETLB_PRIVATE))
 			goto whole;
+		return 0;
 	}
 
 	/* Do not dump I/O mapped devices or special mappings */
-- 
1.7.11.7

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