From: Yishai Hadas <yishaih@mellanox.com>
Date: Wed, 5 Dec 2018 15:50:21 +0200
Subject: IB/mlx5: Block DEVX umem from the non applicable cases
Patch-mainline: v4.20-rc7
Git-commit: 47f07f03b5ee436fe074c4fb1fb28d013c36a0d8
References: bsc#1103991 FATE#326007
Blocks creating a DEVX UMEM with the non applicable access flags
as of ODP, MW_BIND, etc.
Specifically when an ODP flag is used below WARN call trace is issued.
[ 2510.404131] RIP: 0010:__mlx5_ib_populate_pas+0x207/0x220 [mlx5_ib]
...
[ 2510.404143] Call Trace:
[ 2510.404150] ? __kmalloc_node+0x1b3/0x280
[ 2510.404156] ? _uverbs_alloc+0x63/0x90 [ib_uverbs]
[ 2510.404158] ? _uverbs_alloc+0x63/0x90 [ib_uverbs]
[ 2510.404162] mlx5_ib_populate_pas+0x53/0x60 [mlx5_ib]
[ 2510.404167] mlx5_ib_handler_MLX5_IB_METHOD_DEVX_UMEM_REG+0x273/0x3f0 [mlx5_ib]
Fixes: aeae94579caf ("IB/mlx5: Add DEVX support for memory registration")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/mlx5/devx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -1066,7 +1066,9 @@ static int devx_umem_get(struct mlx5_ib_
err = uverbs_get_flags32(&access, attrs,
MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
- IB_ACCESS_SUPPORTED);
+ IB_ACCESS_LOCAL_WRITE |
+ IB_ACCESS_REMOTE_WRITE |
+ IB_ACCESS_REMOTE_READ);
if (err)
return err;