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authorAndrew Morton <akpm@linux-foundation.org>2018-08-21 21:53:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 10:52:44 -0700
commita670468f5e0b5fad4db6e4d195f15915dc2a35c1 (patch)
tree57540edd0f9f24335154139c17695a13b594fe58 /include
parenta3bf6ce366496016990d8578af74673ea04178ff (diff)
downloadlinux-a670468f5e0b5fad4db6e4d195f15915dc2a35c1.tar.bz2
mm: zero out the vma in vma_init()
Rather than in vm_area_alloc(). To ensure that the various oddball stack-based vmas are in a good state. Some of the callers were zeroing them out, others were not. Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a3cae495f9ce..3a4b87d1a59a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -456,6 +456,7 @@ static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm)
{
static const struct vm_operations_struct dummy_vm_ops = {};
+ memset(vma, 0, sizeof(*vma));
vma->vm_mm = mm;
vma->vm_ops = &dummy_vm_ops;
INIT_LIST_HEAD(&vma->anon_vma_chain);