From: Jia-Ju Bai <baijiaju1990@gmail.com>
Date: Wed, 11 Apr 2018 15:32:48 +0800
Subject: infiniband: i40iw: Replace GFP_ATOMIC with GFP_KERNEL in
i40iw_make_listen_node
Patch-mainline: v4.18-rc1
Git-commit: f9af8730143a0fdc572f90b8a388795ee812cd74
References: bsc#1114687 FATE#326314
i40iw_make_listen_node() is never called in atomic context.
i40iw_make_listen_node() is only called by i40iw_create_listen, which is
set as ".create_listen" in struct iw_cm_verbs.
Despite never getting called from atomic context,
i40iw_make_listen_node() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/i40iw/i40iw_cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -2872,7 +2872,7 @@ static struct i40iw_cm_listener *i40iw_m
if (!listener) {
/* create a CM listen node (1/2 node to compare incoming traffic to) */
- listener = kzalloc(sizeof(*listener), GFP_ATOMIC);
+ listener = kzalloc(sizeof(*listener), GFP_KERNEL);
if (!listener)
return NULL;
cm_core->stats_listen_nodes_created++;