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authorVasiliy Kulikov <segooon@gmail.com>2010-10-26 14:21:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:06 -0700
commit0def08e3acc2c9c934e4671487029aed52202d42 (patch)
tree5c1259f85b0ab08cb3e421f6104bee832a956413 /mm
parent74e3f3c3391d81a959f58a1191a560703a4415b4 (diff)
downloadvexpress-lsk-0def08e3acc2c9c934e4671487029aed52202d42.tar.gz
mm/mempolicy.c: check return code of check_range
Function check_range may return ERR_PTR(...). Check for it. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Reviewed-by: Christoph Lameter <cl@linux.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 21243b2b7b0..81a127643ae 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -924,12 +924,15 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
nodemask_t nmask;
LIST_HEAD(pagelist);
int err = 0;
+ struct vm_area_struct *vma;
nodes_clear(nmask);
node_set(source, nmask);
- check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
+ vma = check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
flags | MPOL_MF_DISCONTIG_OK, &pagelist);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_node_page, dest, 0);