diff options
| -rw-r--r-- | net/rds/message.c | 5 | ||||
| -rw-r--r-- | net/rds/rdma.c | 8 | ||||
| -rw-r--r-- | net/rds/send.c | 4 |
3 files changed, 17 insertions, 0 deletions
diff --git a/net/rds/message.c b/net/rds/message.c index a84545dae37..848cff45183 100644 --- a/net/rds/message.c +++ b/net/rds/message.c @@ -224,6 +224,9 @@ struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents) WARN_ON(rm->m_used_sgs + nents > rm->m_total_sgs); WARN_ON(!nents); + if (rm->m_used_sgs + nents > rm->m_total_sgs) + return NULL; + sg_ret = &sg_first[rm->m_used_sgs]; sg_init_table(sg_ret, nents); rm->m_used_sgs += nents; @@ -246,6 +249,8 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len); rm->data.op_nents = ceil(total_len, PAGE_SIZE); rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs); + if (!rm->data.op_sg) + return ERR_PTR(-ENOMEM); for (i = 0; i < rm->data.op_nents; ++i) { sg_set_page(&rm->data.op_sg[i], diff --git a/net/rds/rdma.c b/net/rds/rdma.c index caa4d9866d9..8920f2a8332 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -607,6 +607,10 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm, op->op_recverr = rs->rs_recverr; WARN_ON(!nr_pages); op->op_sg = rds_message_alloc_sgs(rm, nr_pages); + if (!op->op_sg) { + ret = -ENOMEM; + goto out; + } if (op->op_notify || op->op_recverr) { /* We allocate an uninitialized notifier here, because @@ -807,6 +811,10 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm, rm->atomic.op_active = 1; rm->atomic.op_recverr = rs->rs_recverr; rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1); + if (!rm->atomic.op_sg) { + ret = -ENOMEM; + goto err; + } /* verify 8 byte-aligned */ if (args->local_addr & 0x7) { diff --git a/net/rds/send.c b/net/rds/send.c index 0bc9db17a87..35b9c2e9caf 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -973,6 +973,10 @@ int rds_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, /* Attach data to the rm */ if (payload_len) { rm->data.op_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE)); + if (!rm->data.op_sg) { + ret = -ENOMEM; + goto out; + } ret = rds_message_copy_from_user(rm, msg->msg_iov, payload_len); if (ret) goto out; |