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| author | Bart Van Assche <bvanassche@acm.org> | 2018-10-08 23:28:54 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-10-17 08:58:24 +0200 |
| commit | 35da77d556c17980f9bd6892828a70d7a1a8a145 (patch) | |
| tree | f0f8deb52659026d4405735f5f9c998b3991730d | |
| parent | nvmet: use strcmp() instead of strncmp() for subsystem lookup (diff) | |
| download | linux-35da77d556c17980f9bd6892828a70d7a1a8a145.tar.xz linux-35da77d556c17980f9bd6892828a70d7a1a8a145.zip | |
nvmet-rdma: check for timeout in nvme_rdma_wait_for_cm()
Check whether queue->cm_error holds a value before reading it. This patch
addresses Coverity ID 1373774: unchecked return value.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/host/rdma.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index dc042017c293..e7be903041a8 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -233,8 +233,15 @@ static void nvme_rdma_qp_event(struct ib_event *event, void *context) static int nvme_rdma_wait_for_cm(struct nvme_rdma_queue *queue) { - wait_for_completion_interruptible_timeout(&queue->cm_done, + int ret; + + ret = wait_for_completion_interruptible_timeout(&queue->cm_done, msecs_to_jiffies(NVME_RDMA_CONNECT_TIMEOUT_MS) + 1); + if (ret < 0) + return ret; + if (ret == 0) + return -ETIMEDOUT; + WARN_ON_ONCE(queue->cm_error > 0); return queue->cm_error; } |