[Devel] [PATCH RHEL7 COMMIT] i40iw: Use kvzalloc in i40iw_allocate_virt_mem()

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-957.1.3.vz7.83.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-957.1.3.vz7.83.14
------>
commit a961ad3bf5f73c8ee2b6ec9d0109facd573d6eea
Author: Andrey Ryabinin <aryabinin at virtuozzo.com>
Date:   Tue Feb 26 13:22:32 2019 +0300

    i40iw: Use kvzalloc in i40iw_allocate_virt_mem()
    
    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>
---
 drivers/infiniband/hw/i40iw/i40iw_utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_utils.c b/drivers/infiniband/hw/i40iw/i40iw_utils.c
index a9ea966877f2..0b64764e50c5 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_utils.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_utils.c
@@ -783,7 +783,7 @@ 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;
@@ -805,7 +805,7 @@ 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;
 }