diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-10-04 11:08:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-10-04 11:09:08 +0200 |
| commit | 22f92bacbeea24b20e447444c28e7cad9f1ac3f8 (patch) | |
| tree | 5c3f2346804a186aa2d954f078fd2f4d44bcc26e /mm/mempolicy.c | |
| parent | 557ab425429a5123d37f412ce3e6d6137cb621f8 (diff) | |
| parent | 0f86267b79bc6e357b8606077c7f70239045ea9c (diff) | |
Merge branch 'linus' into sched/core
Merge reason: pick up the latest fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 8b57173c1dd..9c51f9f58ca 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -636,7 +636,6 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, struct vm_area_struct *prev; struct vm_area_struct *vma; int err = 0; - pgoff_t pgoff; unsigned long vmstart; unsigned long vmend; @@ -649,9 +648,9 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, vmstart = max(start, vma->vm_start); vmend = min(end, vma->vm_end); - pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT); prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags, - vma->anon_vma, vma->vm_file, pgoff, new_pol); + vma->anon_vma, vma->vm_file, vma->vm_pgoff, + new_pol); if (prev) { vma = prev; next = vma->vm_next; @@ -1412,7 +1411,9 @@ asmlinkage long compat_sys_get_mempolicy(int __user *policy, err = sys_get_mempolicy(policy, nm, nr_bits+1, addr, flags); if (!err && nmask) { - err = copy_from_user(bm, nm, alloc_size); + unsigned long copy_size; + copy_size = min_t(unsigned long, sizeof(bm), alloc_size); + err = copy_from_user(bm, nm, copy_size); /* ensure entire bitmap is zeroed */ err |= clear_user(nmask, ALIGN(maxnode-1, 8) / 8); err |= compat_put_bitmap(nmask, bm, nr_bits); |