From a82268b30a8b4b920d0bad24472cbb000c8e734a Mon Sep 17 00:00:00 2001 From: Insu Yun Date: Wed, 17 Feb 2016 13:06:33 -0500 Subject: [PATCH] nes: handling failed allocation when creating workqueue Since create_singlethread_workqueue uses kzalloc internally, it can fail when the system is under memory pressure, so need to handle it. Signed-off-by: Insu Yun Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford --- drivers/infiniband/hw/nes/nes_cm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index cb9f0f27308d..e3fc2a14904c 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -2856,12 +2856,22 @@ static struct nes_cm_core *nes_cm_alloc_core(void) nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); cm_core->event_wq = create_singlethread_workqueue("nesewq"); + if (!cm_core->event_wq) + goto out_free_cmcore; cm_core->post_event = nes_cm_post_event; nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); + if (!cm_core->disconn_wq) + goto out_free_wq; print_core(cm_core); return cm_core; + +out_free_wq: + destroy_workqueue(cm_core->event_wq); +out_free_cmcore: + kfree(cm_core); + return NULL; } -- 2.39.5