forked from Minki/linux
IB/mlx4: Fix race condition between catas error reset and aliasguid flows
Code review revealed a race condition which could allow the catas error
flow to interrupt the alias guid query post mechanism at random points.
Thiis is fixed by doing cancel_delayed_work_sync() instead of
cancel_delayed_work() during the alias guid mechanism destroy flow.
Fixes: a0c64a17ab
("mlx4: Add alias_guid mechanism")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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@ -804,8 +804,8 @@ void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev)
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unsigned long flags;
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unsigned long flags;
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for (i = 0 ; i < dev->num_ports; i++) {
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for (i = 0 ; i < dev->num_ports; i++) {
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cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work);
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det = &sriov->alias_guid.ports_guid[i];
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det = &sriov->alias_guid.ports_guid[i];
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cancel_delayed_work_sync(&det->alias_guid_work);
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spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
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spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
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while (!list_empty(&det->cb_list)) {
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while (!list_empty(&det->cb_list)) {
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cb_ctx = list_entry(det->cb_list.next,
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cb_ctx = list_entry(det->cb_list.next,
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