From: Elad Grupi <elad.grupi@dell.com>
Date: Tue, 16 Mar 2021 15:44:25 +0000 (+0200)
Subject: nvmet-tcp: fix kmap leak when data digest in use
X-Git-Tag: v5.10.79~5965
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa068ee3f37e0b54504a034c7d9d70cc379a9124;p=platform%2Fkernel%2Flinux-rpi.git

nvmet-tcp: fix kmap leak when data digest in use

[ Upstream commit bac04454ef9fada009f0572576837548b190bf94 ]

When data digest is enabled we should unmap pdu iovec before handling
the data digest pdu.

Signed-off-by: Elad Grupi <elad.grupi@dell.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index 8b0485a..d658c6e 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -1098,11 +1098,11 @@ static int nvmet_tcp_try_recv_data(struct nvmet_tcp_queue *queue)
 		cmd->rbytes_done += ret;
 	}
 
+	nvmet_tcp_unmap_pdu_iovec(cmd);
 	if (queue->data_digest) {
 		nvmet_tcp_prep_recv_ddgst(cmd);
 		return 0;
 	}
-	nvmet_tcp_unmap_pdu_iovec(cmd);
 
 	if (!(cmd->flags & NVMET_TCP_F_INIT_FAILED) &&
 	    cmd->rbytes_done == cmd->req.transfer_len) {