[ofa-general] [PATCH] IB/mlx4: Set umem field to NULL in mlx4_ib_alloc_fast_reg_mr to avoid oops

[Vladimir Sokolovsky]

Set mr->umem to NULL in mlx4_ib_alloc_fast_reg_mr, to avoid invoking
ib_umem_release() during ib_dereg_mr() and getting a kernel oops.

Signed-off-by: Vladimir Sokolovsky <vlad at mellanox.co.il>
---
 drivers/infiniband/hw/mlx4/mr.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 87f5c5a..8e4d26d 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -205,6 +205,7 @@ struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
 		goto err_mr;
 
 	mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
+	mr->umem = NULL;
 
 	return &mr->ibmr;
 
-- 
1.5.6.3