From: ZouMingzhe mingzhe.zou@easystack.cn
stable inclusion from linux-4.19.230 commit ded80123b84253ecc6c6cfd1fbbbd99f51c984ec
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[ Upstream commit a861790afaa8b6369eee8a88c5d5d73f5799c0c6 ]
iscsit_tpg_check_network_portal() has nested for_each loops and is supposed to return true when a match is found. However, the tpg loop will still continue after existing the tpg_np loop. If this tpg_np is not the last the match value will be changed.
Break the outer loop after finding a match and make sure the np under each tpg is unique.
Link: https://lore.kernel.org/r/20220111054742.19582-1-mingzhe.zou@easystack.cn Signed-off-by: ZouMingzhe mingzhe.zou@easystack.cn Reviewed-by: Mike Christie michael.christie@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yongqiang Liu liuyongqiang13@huawei.com Signed-off-by: Laibin Qiu qiulaibin@huawei.com --- drivers/target/iscsi/iscsi_target_tpg.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c index 101d62105c93..f3671ffdf149 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.c +++ b/drivers/target/iscsi/iscsi_target_tpg.c @@ -451,6 +451,9 @@ static bool iscsit_tpg_check_network_portal( break; } spin_unlock(&tpg->tpg_np_lock); + + if (match) + break; } spin_unlock(&tiqn->tiqn_tpg_lock);