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VM_GROWS{UP,DOWN} shouldn't be set on shmem VMAs

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Al Viro 2012-03-05 06:39:47 +00:00 committed by Linus Torvalds
parent 6414fa6a15
commit 835ee7978c
1 changed files with 2 additions and 0 deletions
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2
mm/mmap.c
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@ -1293,6 +1293,8 @@ munmap_back:
pgoff = vma->vm_pgoff; pgoff = vma->vm_pgoff;
vm_flags = vma->vm_flags; vm_flags = vma->vm_flags;
} else if (vm_flags & VM_SHARED) { } else if (vm_flags & VM_SHARED) {
if (unlikely(vm_flags & (VM_GROWSDOWN|VM_GROWSUP)))
goto free_vma;
error = shmem_zero_setup(vma); error = shmem_zero_setup(vma);
if (error) if (error)
goto free_vma; goto free_vma;