From: Stefan Metzmacher metze@samba.org
[ Upstream commit 5349ae5e05fa37409fd48a1eb483b199c32c889b ]
We should call ib_dma_unmap_single() and mempool_free() before calling smbd_disconnect_rdma_connection().
And smbd_disconnect_rdma_connection() needs to be the last function to call as all other state might already be gone after it returns.
Cc: Steve French smfrench@gmail.com Cc: Tom Talpey tom@talpey.com Cc: Long Li longli@microsoft.com Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection") Signed-off-by: Stefan Metzmacher metze@samba.org Signed-off-by: Steve French stfrench@microsoft.com [ Use `request->info` instead of `info` ] Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cifs/smbdirect.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c index 7d18b9268817..61aaed0d8746 100644 --- a/fs/cifs/smbdirect.c +++ b/fs/cifs/smbdirect.c @@ -272,18 +272,21 @@ static void send_done(struct ib_cq *cq, struct ib_wc *wc) log_rdma_send(INFO, "smbd_request %p completed wc->status=%d\n", request, wc->status);
- if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_SEND) { - log_rdma_send(ERR, "wc->status=%d wc->opcode=%d\n", - wc->status, wc->opcode); - smbd_disconnect_rdma_connection(request->info); - } - for (i = 0; i < request->num_sge; i++) ib_dma_unmap_single(request->info->id->device, request->sge[i].addr, request->sge[i].length, DMA_TO_DEVICE);
+ if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_SEND) { + struct smbd_connection *info = request->info; + log_rdma_send(ERR, "wc->status=%d wc->opcode=%d\n", + wc->status, wc->opcode); + mempool_free(request, info->request_mempool); + smbd_disconnect_rdma_connection(info); + return; + } + if (atomic_dec_and_test(&request->info->send_pending)) wake_up(&request->info->wait_send_pending);