[PATCH next] smb: client: Fix use after free in send_done()

[Dan Carpenter <dan.carpenter@linaro.org>]

The mempool_free() function frees "request".  Don't free the request
until after smbd_disconnect_rdma_connection() to avoid a use after free
bug.

Fixes: 5e65668c75c0 ("smb: client: let send_done() cleanup before calling smbd_disconnect_rdma_connection()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 fs/smb/client/smbdirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c
index 58321e483a1a..162f8d1c548a 100644
--- a/fs/smb/client/smbdirect.c
+++ b/fs/smb/client/smbdirect.c
@@ -286,8 +286,8 @@ static void send_done(struct ib_cq *cq, struct ib_wc *wc)
 	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);
-		mempool_free(request, request->info->request_mempool);
 		smbd_disconnect_rdma_connection(request->info);
+		mempool_free(request, request->info->request_mempool);
 		return;
 	}
 
-- 
2.47.2