Author: hselasky
Date: Thu Aug 2 08:19:08 2018
New Revision: 337081
URL: https://svnweb.freebsd.org/changeset/base/337081
Log:
MFC r336375:
Fix access to non-initialized CM_ID object in ibcore.
The attempt to join multicast group without ensuring that CMA device
exists will lead to the following crash reported by syzkaller.
Linux commit:
7688f2c3bbf55e52388e37ac5d63ca471a7712e1
Sponsored by: Mellanox Technologies
Modified:
stable/11/sys/ofed/drivers/infiniband/core/ib_cma.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/ofed/drivers/infiniband/core/ib_cma.c
==============================================================================
--- stable/11/sys/ofed/drivers/infiniband/core/ib_cma.c Thu Aug 2 08:18:11
2018 (r337080)
+++ stable/11/sys/ofed/drivers/infiniband/core/ib_cma.c Thu Aug 2 08:19:08
2018 (r337081)
@@ -4064,6 +4064,9 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct
struct cma_multicast *mc;
int ret;
+ if (!id->device)
+ return -EINVAL;
+
id_priv = container_of(id, struct rdma_id_private, id);
if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) &&
!cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED))
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