diff options
| author | Michael S. Tsirkin <mst@dev.mellanox.co.il> | 2007-04-30 17:30:28 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-04-30 17:30:28 -0700 |
| commit | 347fcfbed261fdd11f46fa03d524e1bddddab3a6 (patch) | |
| tree | 370b7f5f3d0bdb8d344dadbffce4ec4eba0af4a7 | |
| parent | 6b66b2da1e821181a001c00b04a807724ad803cd (diff) | |
IPoIB/cm: Fix error handling in ipoib_cm_dev_open()
If skb allocation fails when we start the device, we call
ipoib_cm_dev_stop() even though ipoib_cm_dev_open() did not run to
completion, so we pass an invalid pointer to ib_destroy_cm_id and get
an oops.
Fix by clearing cm.id on error, and testing it in cm_dev_stop().
This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=561>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_cm.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index 0c4e59b906c..76717410660 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -592,7 +592,9 @@ int ipoib_cm_dev_open(struct net_device *dev) priv->cm.id = ib_create_cm_id(priv->ca, ipoib_cm_rx_handler, dev); if (IS_ERR(priv->cm.id)) { printk(KERN_WARNING "%s: failed to create CM ID\n", priv->ca->name); - return IS_ERR(priv->cm.id); + ret = PTR_ERR(priv->cm.id); + priv->cm.id = NULL; + return ret; } ret = ib_cm_listen(priv->cm.id, cpu_to_be64(IPOIB_CM_IETF_ID | priv->qp->qp_num), @@ -601,6 +603,7 @@ int ipoib_cm_dev_open(struct net_device *dev) printk(KERN_WARNING "%s: failed to listen on ID 0x%llx\n", priv->ca->name, IPOIB_CM_IETF_ID | priv->qp->qp_num); ib_destroy_cm_id(priv->cm.id); + priv->cm.id = NULL; return ret; } return 0; @@ -611,10 +614,11 @@ void ipoib_cm_dev_stop(struct net_device *dev) struct ipoib_dev_priv *priv = netdev_priv(dev); struct ipoib_cm_rx *p; - if (!IPOIB_CM_SUPPORTED(dev->dev_addr)) + if (!IPOIB_CM_SUPPORTED(dev->dev_addr) || !priv->cm.id) return; ib_destroy_cm_id(priv->cm.id); + priv->cm.id = NULL; spin_lock_irq(&priv->lock); while (!list_empty(&priv->cm.passive_ids)) { p = list_entry(priv->cm.passive_ids.next, typeof(*p), list); |