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RDMA/bnxt_re: Fix system crash during load/unload

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[ Upstream commit dcdaba08062b4726500b9456f8664bfda896c664 ]

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 <selvin.xavier@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Selvin Xavier 2018-02-15 21:20:12 -08:00 committed by Greg Kroah-Hartman
parent c0935f1ef9
commit 775cc792bb
1 changed files with 5 additions and 0 deletions
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5
drivers/infiniband/hw/bnxt_re/main.c
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@ -1398,6 +1398,11 @@ static void __exit bnxt_re_mod_exit(void)
list_for_each_entry(rdev, &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);