On 05/17/2012 03:51 PM, Thadeu Lima de Souza Cascardo wrote:
When using rping -c -a 0.0.0.0 with iw_cxgb4, the system crashes when
rdma_connect is called. ip_dev_find will return NULL, but pdev is
accessed anyway.
Checking that pdev is NULL and returning -ENODEV prevents the system
from crashing.
Signed-off-by: Thadeu Lima de Souza Cascardo<[email protected]>
---
drivers/infiniband/hw/cxgb4/cm.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 92b4c2b..0e75e30 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1572,6 +1572,10 @@ static int import_ep(struct c4iw_ep *ep, __be32 peer_ip,
struct dst_entry *dst,
struct net_device *pdev;
pdev = ip_dev_find(&init_net, peer_ip);
+ if (!pdev) {
+ err = -ENODEV;
+ goto out;
+ }
ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
n, pdev, 0);
if (!ep->l2t)
This patch seems good, but I'm curious why the cm passed this down to
the iwarp driver? 0.0.0.0 shouldn't have mapped to any device, eh?
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