Unverified Commit e659b839 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!15398 RDMA/hfi1: Prevent use of lock before it is initialized 

Merge Pull Request from: @ci-robot 
 
PR sync from: Chen Zhongjin <chenzhongjin@huawei.com>
https://mailweb.openeuler.org/archives/list/kernel@openeuler.org/message/PZVMYTRJ2EA5AE4YFC5DWIX5JLITZU54/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBP6TA 
 
Link:https://gitee.com/openeuler/kernel/pulls/15398

 

Reviewed-by: default avatarYe Weihua <yeweihua4@huawei.com>
Reviewed-by: default avatarYuan Can <yuancan@huawei.com>
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
parents 06945604 89ccc9a4

drivers/infiniband/hw/hfi1/sdma.c

+7 −5
Original line number Diff line number Diff line
@@ -1313,11 +1313,13 @@ void sdma_clean(struct hfi1_devdata *dd, size_t num_engines) 
		kvfree(sde->tx_ring);

		sde->tx_ring = NULL;

	}

	if (rcu_access_pointer(dd->sdma_map)) {

		spin_lock_irq(&dd->sde_map_lock);

		sdma_map_free(rcu_access_pointer(dd->sdma_map));

		RCU_INIT_POINTER(dd->sdma_map, NULL);

		spin_unlock_irq(&dd->sde_map_lock);

		synchronize_rcu();

	}

	kfree(dd->per_sdma);

	dd->per_sdma = NULL;