4.14-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 @@ -1289,11 +1289,6 @@ 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: @@ -2995,8 +2990,19 @@ 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);