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IB/core: Free umem when mm is already gone
author
Eli Cohen
<eli@mellanox.co.il>
Mon, 14 May 2007 08:35:43 +0000
(11:35 +0300)
committer
Roland Dreier
<rolandd@cisco.com>
Sat, 19 May 2007 15:51:53 +0000
(08:51 -0700)
Free umem when task's mm is already destroyed by the time
ib_umem_release gets called.
Found by Dotan Barak at Mellanox.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/core/umem.c
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diff --git
a/drivers/infiniband/core/umem.c
b/drivers/infiniband/core/umem.c
index
f32ca5f
..
6009234
100644
(file)
--- a/
drivers/infiniband/core/umem.c
+++ b/
drivers/infiniband/core/umem.c
@@
-209,8
+209,10
@@
void ib_umem_release(struct ib_umem *umem)
__ib_umem_release(umem->context->device, umem, 1);
mm = get_task_mm(current);
- if (!mm)
+ if (!mm) {
+ kfree(umem);
return;
+ }
diff = PAGE_ALIGN(umem->length + umem->offset) >> PAGE_SHIFT;