[Devel] [PATCH RH8 4/7] i40iw: Use kvzalloc in i40iw_allocate_virt_mem()

[Andrey Zhadchenko]

From: Andrey Ryabinin <aryabinin at virtuozzo.com>

Fixes the following:
 WARNING: CPU: 8 PID: 1711 at mm/page_alloc.c:3531 __alloc_pages_nodemask+0x311/0x610
 order 5 >= 3, gfp 0xc0d0

 Call Trace:
  [<ffffffff9e391fd8>] dump_stack+0x19/0x1b
  [<ffffffff9dc98778>] __warn+0xd8/0x100
  [<ffffffff9dc987ff>] warn_slowpath_fmt+0x5f/0x80
  [<ffffffff9ddd4371>] __alloc_pages_nodemask+0x311/0x610
  [<ffffffff9de26a78>] alloc_pages_current+0x98/0x110
  [<ffffffff9ddf1ae8>] kmalloc_order+0x18/0x40
  [<ffffffff9ddf1b36>] kmalloc_order_trace+0x26/0xa0
  [<ffffffff9de35ce1>] __kmalloc+0x281/0x2a0
  [<ffffffffc08f77e1>] i40iw_allocate_virt_mem+0x21/0x40 [i40iw]
  [<ffffffffc08eadd6>] i40iw_config_fpm_values+0x376/0x4c0 [i40iw]
  [<ffffffffc08f0288>] i40iw_open.part.10+0x888/0x17f0 [i40iw]
  [<ffffffffc08f122b>] i40iw_open+0x3b/0x50 [i40iw]
  [<ffffffffc04f19cd>] i40e_client_subtask+0xbd/0x130 [i40e]
  [<ffffffffc04d408f>] i40e_service_task+0x62f/0x1360 [i40e]
  [<ffffffff9dcbc1e2>] process_one_work+0x182/0x440
  [<ffffffff9dcbd396>] worker_thread+0x126/0x3c0
  [<ffffffff9dcc4401>] kthread+0xd1/0xe0
  [<ffffffff9e3a4cf7>] ret_from_fork_nospec_begin+0x21/0x21

https://pmc.acronis.com/browse/VSTOR-20675
Signed-off-by: Andrey Ryabinin <aryabinin at virtuozzo.com>

(cherry-picked from a961ad3bf5f73c8ee2b6ec9d0109facd573d6eea)
Signed-off-by: Andrey Zhadchenko <andrey.zhadchenko at virtuozzo.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_utils.c b/drivers/infiniband/hw/i40iw/i40iw_utils.c
index 0165246..c8659e6 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_utils.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_utils.c
@@ -796,7 +796,7 @@ enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
 		return I40IW_ERR_PARAM;
 
 	mem->size = size;
-	mem->va = kzalloc(size, GFP_KERNEL);
+	mem->va = kvzalloc(size, GFP_KERNEL);
 
 	if (mem->va)
 		return 0;
@@ -818,7 +818,7 @@ enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
 	 * mem->va points to the parent of mem, so both mem and mem->va
 	 * can not be touched once mem->va is freed
 	 */
-	kfree(mem->va);
+	kvfree(mem->va);
 	return 0;
 }
 
-- 
1.8.3.1