Received-SPF: pass (google.com: domain of linux-kernel+bounces-44310-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Daniel Wagner <dwagner@suse.de>
To: James Smart <james.smart@broadcom.com>
Cc: Keith Busch <kbusch@kernel.org>,
	Christoph Hellwig <hch@lst.de>,
	Hannes Reinecke <hare@suse.de>,
	linux-nvme@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Daniel Wagner <dwagner@suse.de>
Subject: [PATCH v4 06/12] nvmet-fc: hold reference on hostport match
Date: Tue, 30 Jan 2024 10:49:32 +0100
Message-ID: <20240130094938.1575-7-dwagner@suse.de>
In-Reply-To: <20240130094938.1575-1-dwagner@suse.de>
References: <20240130094938.1575-1-dwagner@suse.de>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

The hostport data structure is shared between the association, this why
we keep track of the users via a refcount. So we should not decrement
the refcount on a match and free the hostport several times.

Reported by KASAN.

Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/nvme/target/fc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index b44b99525c44..205a12b1e841 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -1068,8 +1068,6 @@ nvmet_fc_alloc_hostport(struct nvmet_fc_tgtport *tgtport, void *hosthandle)
 		/* new allocation not needed */
 		kfree(newhost);
 		newhost = match;
-		/* no new allocation - release reference */
-		nvmet_fc_tgtport_put(tgtport);
 	} else {
 		newhost->tgtport = tgtport;
 		newhost->hosthandle = hosthandle;
-- 
2.43.0