diff options
| author | Israel Rukshin <israelr@mellanox.com> | 2018-12-05 19:54:57 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-07 18:11:11 +0300 |
| commit | d7dcdf9d4e15189ecfda24cc87339a3425448d5c (patch) | |
| tree | 640703c9e73ab1e9148be0735e913f382531a45b | |
| parent | 86880d646122240596d6719b642fee3213239994 (diff) | |
| download | linux-d7dcdf9d4e15189ecfda24cc87339a3425448d5c.tar.xz | |
nvmet-rdma: fix response use after free
nvmet_rdma_release_rsp() may free the response before using it at error
flow.
Fixes: 8407879 ("nvmet-rdma: fix possible bogus dereference under heavy load")
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/target/rdma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c index 3f7971d3706d..583086dd9cb9 100644 --- a/drivers/nvme/target/rdma.c +++ b/drivers/nvme/target/rdma.c @@ -529,6 +529,7 @@ static void nvmet_rdma_send_done(struct ib_cq *cq, struct ib_wc *wc) { struct nvmet_rdma_rsp *rsp = container_of(wc->wr_cqe, struct nvmet_rdma_rsp, send_cqe); + struct nvmet_rdma_queue *queue = cq->cq_context; nvmet_rdma_release_rsp(rsp); @@ -536,7 +537,7 @@ static void nvmet_rdma_send_done(struct ib_cq *cq, struct ib_wc *wc) wc->status != IB_WC_WR_FLUSH_ERR)) { pr_err("SEND for CQE 0x%p failed with status %s (%d).\n", wc->wr_cqe, ib_wc_status_msg(wc->status), wc->status); - nvmet_rdma_error_comp(rsp->queue); + nvmet_rdma_error_comp(queue); } } |