diff options
authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2013-04-17 15:58:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-17 16:10:44 -0700
commit23d9e482136e31c9d287633a6e473daa172767c4 (patch)
parenta2fce9143057f4eb7675a21cca1b6beabe585c8b (diff)
fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
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@ah.jp.nec.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [3.7+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 3939829f6c5..86af964c242 100644
--- a/fs/binfmt_elf.c
+++ b/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 */