diff options
| author | Israel Rukshin <israelr@mellanox.com> | 2018-12-05 19:54:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-21 16:15:25 +0300 |
| commit | 5f286ec243d3cf94674b7ffa281cbc2c09428a58 (patch) | |
| tree | a405ec74fb25b6e4a974016aa680236a29033a31 | |
| parent | b2d58756858822778044de2a6a6f2e26bdc90873 (diff) | |
| download | linux-5f286ec243d3cf94674b7ffa281cbc2c09428a58.tar.xz | |
nvmet-rdma: fix response use after free
[ Upstream commit d7dcdf9d4e15189ecfda24cc87339a3425448d5c ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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 bfc4da660bb4..e57f3902beb3 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); } } |