IB/ipath: Fix memory leak in ipath_resize_cq() if copy_to_user() fails

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Patrick Marchand Latifi <patrick.latifi@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c
index 645ed71..08d8ae1 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_cq.c
+++ b/drivers/infiniband/hw/ipath/ipath_cq.c
@@ -404,7 +404,7 @@ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
 
                ret = ib_copy_to_udata(udata, &offset, sizeof(offset));
                if (ret)
-                       goto bail;
+                       goto bail_free;
        }
 
        spin_lock_irq(&cq->lock);
@@ -424,10 +424,8 @@ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
        else
                n = head - tail;
        if (unlikely((u32)cqe < n)) {
-               spin_unlock_irq(&cq->lock);
-               vfree(wc);
                ret = -EOVERFLOW;
-               goto bail;
+               goto bail_unlock;
        }
        for (n = 0; tail != head; n++) {
                if (cq->ip)
@@ -459,7 +457,12 @@ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
        }
 
        ret = 0;
+       goto bail;
 
+bail_unlock:
+       spin_unlock_irq(&cq->lock);
+bail_free:
+       vfree(wc);
 bail:
        return ret;
 }