diff options
| author | Al Viro <viro@ZenIV.linux.org.uk> | 2012-03-05 06:39:47 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-05 13:51:32 -0800 |
| commit | 835ee7978cb47de94cf70232a694f19295d2993f (patch) | |
| tree | 0befe356dba1efbe02bf7ced7285f7dea94936fd /mm/mmap.c | |
| parent | 6414fa6a150111750011f477899d370244da4171 (diff) | |
| download | lwn-835ee7978cb47de94cf70232a694f19295d2993f.tar.gz lwn-835ee7978cb47de94cf70232a694f19295d2993f.zip | |
VM_GROWS{UP,DOWN} shouldn't be set on shmem VMAs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 3f758c7f4c81..22e1a0b2f70c 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1293,6 +1293,8 @@ munmap_back: pgoff = vma->vm_pgoff; vm_flags = vma->vm_flags; } else if (vm_flags & VM_SHARED) { + if (unlikely(vm_flags & (VM_GROWSDOWN|VM_GROWSUP))) + goto free_vma; error = shmem_zero_setup(vma); if (error) goto free_vma; |