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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Keith Busch <kbusch@kernel.org>, Max Gurtovoy <maxg@mellanox.com>,
	Christoph Hellwig <hch@lst.de>,
	linux-nvme@lists.infradead.org, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.3 74/99] nvmet-loop: fix possible leakage during error flow
Date: Sat, 26 Oct 2019 09:15:35 -0400	[thread overview]
Message-ID: <20191026131600.2507-74-sashal@kernel.org> (raw)
In-Reply-To: <20191026131600.2507-1-sashal@kernel.org>

From: Max Gurtovoy <maxg@mellanox.com>

[ Upstream commit 5812d04c4c7455627d8722e04ab99a737cfe9713 ]

During nvme_loop_queue_rq error flow, one must call nvme_cleanup_cmd since
it's symmetric to nvme_setup_cmd.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/target/loop.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 0940c5024a345..7b857c3f67879 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -157,8 +157,10 @@ static blk_status_t nvme_loop_queue_rq(struct blk_mq_hw_ctx *hctx,
 		iod->sg_table.sgl = iod->first_sgl;
 		if (sg_alloc_table_chained(&iod->sg_table,
 				blk_rq_nr_phys_segments(req),
-				iod->sg_table.sgl, SG_CHUNK_SIZE))
+				iod->sg_table.sgl, SG_CHUNK_SIZE)) {
+			nvme_cleanup_cmd(req);
 			return BLK_STS_RESOURCE;
+		}
 
 		iod->req.sg = iod->sg_table.sgl;
 		iod->req.sg_cnt = blk_rq_map_sg(req->q, req, iod->sg_table.sgl);
-- 
2.20.1


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  parent reply	other threads:[~2019-10-26 13:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20191026131600.2507-1-sashal@kernel.org>
2019-10-26 13:14 ` [PATCH AUTOSEL 5.3 08/99] nvme: fix possible deadlock when nvme_update_formats fails Sasha Levin
2019-10-26 13:14 ` [PATCH AUTOSEL 5.3 09/99] nvme: retain split access workaround for capability reads Sasha Levin
2019-10-26 13:15 ` [PATCH AUTOSEL 5.3 65/99] nvme-pci: Free tagset if no IO queues Sasha Levin
2019-10-26 13:15 ` [PATCH AUTOSEL 5.3 66/99] nvme: Prevent resets during paused controller state Sasha Levin
2019-10-26 13:15 ` Sasha Levin [this message]
2019-10-26 13:15 ` [PATCH AUTOSEL 5.3 75/99] nvme-tcp: fix possible leakage during error flow Sasha Levin

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