From 17c2d5e00bcbc2875134225e130d2b2760959829 Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Thu, 15 Feb 2018 21:20:12 -0800 Subject: [PATCH] RDMA/bnxt_re: Fix system crash during load/unload During driver unload, the driver proceeds with cleanup without waiting for the scheduled events. So the device pointers get freed up and driver crashes when the events are scheduled later. Flush the bnxt_re_task work queue before starting device removal. Signed-off-by: Selvin Xavier Signed-off-by: Doug Ledford --- drivers/infiniband/hw/bnxt_re/main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index 508d00a5a1066..7f9298db507b4 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -1578,6 +1578,11 @@ static void __exit bnxt_re_mod_exit(void) */ list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) { dev_info(rdev_to_dev(rdev), "Unregistering Device"); + /* + * Flush out any scheduled tasks before destroying the + * resources + */ + flush_workqueue(bnxt_re_wq); bnxt_re_dev_stop(rdev); bnxt_re_ib_unreg(rdev, true); bnxt_re_remove_one(rdev); -- 2.39.5