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nvmet-tcp: fix memory leak when performing a controller reset 

If a reset controller is executed while the initiator
is performing some I/O the driver may leak the memory allocated
for the commands' iovec.

Make sure that nvmet_tcp_uninit_data_in_cmds() releases
all the memory.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: John Meneghini <jmeneghi@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Maurizio Lombardi 2021-11-16 16:49:20 +01:00 committed by Christoph Hellwig
parent 69b85e1f1d
commit af21250bb5
1 changed files with 4 additions and 1 deletions
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5
drivers/nvme/target/tcp.c
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@ -1427,7 +1427,10 @@ static void nvmet_tcp_uninit_data_in_cmds(struct nvmet_tcp_queue *queue)
for (i = 0; i < queue->nr_cmds; i++, cmd++) {
if (nvmet_tcp_need_data_in(cmd))
nvmet_tcp_finish_cmd(cmd);
nvmet_req_uninit(&cmd->req);
nvmet_tcp_unmap_pdu_iovec(cmd);
nvmet_tcp_free_cmd_buffers(cmd);
}
if (!queue->nr_cmds && nvmet_tcp_need_data_in(&queue->connect)) {