4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doug Oucahrek <dougso@xxxxxx>
[ Upstream commit cf04968efe341b9b1c30a527e5dd61b2af9c43d2 ]
cmid will be destroyed at OFED if kiblnd_cm_callback return error.
if error happen before the end of kiblnd_connect_peer, it will touch
destroyed cmid and fail as
(o2iblnd_cb.c:1315:kiblnd_connect_peer())
ASSERTION( cmid->device != ((void *)0) ) failed:
Signed-off-by: Alexander Boyko <alexander.boyko@xxxxxxxxxxx>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-10015
Reviewed-by: Alexey Lyashkov <c17817@xxxxxxxx>
Reviewed-by: Doug Oucharek <dougso@xxxxxx>
Reviewed-by: John L. Hammond <john.hammond@xxxxxxxxx>
Signed-off-by: Doug Oucharek <dougso@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 18 +++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -1299,11 +1299,6 @@ kiblnd_connect_peer(struct kib_peer *pee
goto failed2;
}
- LASSERT(cmid->device);
- CDEBUG(D_NET, "%s: connection bound to %s:%pI4h:%s\n",
- libcfs_nid2str(peer->ibp_nid), dev->ibd_ifname,
- &dev->ibd_ifip, cmid->device->name);
-
return;
failed2:
@@ -3005,8 +3000,19 @@ kiblnd_cm_callback(struct rdma_cm_id *cm
} else {
rc = rdma_resolve_route(
cmid, *kiblnd_tunables.kib_timeout * 1000);
- if (!rc)
+ if (!rc) {
+ struct kib_net *net = peer->ibp_ni->ni_data;
+ struct kib_dev *dev = net->ibn_dev;
+
+ CDEBUG(D_NET, "%s: connection bound to "\
+ "%s:%pI4h:%s\n",
+ libcfs_nid2str(peer->ibp_nid),
+ dev->ibd_ifname,
+ &dev->ibd_ifip, cmid->device->name);
+
return 0;
+ }
+
/* Can't initiate route resolution */
CERROR("Can't resolve route for %s: %d\n",
libcfs_nid2str(peer->ibp_nid), rc);
