po 27. 2. 2023 v 9:00 odesílatel Maurizio Lombardi <mlombard@xxxxxxxxxx> napsal: > > Fix the issue by using memalloc_noio_*() to enable implicit GFP_NOIO > in the vulnerable code paths, when the connection is in loopback. > > @@ -1289,6 +1291,12 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) > iscsit_free_conn(conn); > return 1; > } > + > + dst = sk_dst_get(conn->sock->sk); > + if (dst && dst->dev && dst->dev->flags & IFF_LOOPBACK) > + conn->loopback = true; > + dst_release(dst); > + As discussed in the other thread, conn->sock is not set when isert/cxgbit etc are used. So we need to check it here otherwise the kernel would crash. I think that "conn->loopback" should be set by the iscsit_accept_np() callback. Maurizio
