From: Chao Leng <lengchao@huawei.com>
To: <linux-nvme@lists.infradead.org>
Cc: kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me
Subject: [PATCH] nvme-core: use list_add_tail_rcu instead of list_add_tail for nvme_init_ns_head
Date: Thu, 28 Jan 2021 11:33:51 +0800 [thread overview]
Message-ID: <20210128033351.22116-1-lengchao@huawei.com> (raw)
The "list" of nvme_ns_head is used as rcu list, now in nvme_init_ns_head
list_add_tail is used to add ns->siblings to the rcu list. It is not safe.
Should use list_add_tail_rcu instead of list_add_tail.
Signed-off-by: Chao Leng <lengchao@huawei.com>
---
drivers/nvme/host/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8caf9b34734d..f13eb4ded95f 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -3829,7 +3829,7 @@ static int nvme_init_ns_head(struct nvme_ns *ns, unsigned nsid,
}
}
- list_add_tail(&ns->siblings, &head->list);
+ list_add_tail_rcu(&ns->siblings, &head->list);
ns->head = head;
mutex_unlock(&ctrl->subsys->lock);
return 0;
--
2.16.4
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next reply other threads:[~2021-01-28 3:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 3:33 Chao Leng [this message]
2021-01-28 18:25 ` [PATCH] nvme-core: use list_add_tail_rcu instead of list_add_tail for nvme_init_ns_head Christoph Hellwig
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