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authorFaisal Latif <faisal.latif@intel.com>2009-04-09 01:22:20 +0400
committerRoland Dreier <rolandd@cisco.com>2009-04-09 01:22:20 +0400
commit79fc3d7410c861c8ced5b81a5c3759f6bbf891dc (patch)
tree99c16570cd52c43d65bc9ca4e60f3c4e34d4ae7e /drivers/infiniband/hw
parent7a5efb62f6ae366cefac6be475434906c5061e15 (diff)
downloadlinux-79fc3d7410c861c8ced5b81a5c3759f6bbf891dc.tar.xz
RDMA/nes: Fix error handling issues
Fix issues found by static code analysis: (1) Check if cm_node was successfully created for loopback connection. (2) schedule_nes_timer() does not free up allocated memory after encountering an error. There is a WARN_ON() for this condition. (3) there is a cm_node->freed flag which is set but not used. Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Faisal Latif <faisal.latif@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/nes/nes_cm.c8
-rw-r--r--drivers/infiniband/hw/nes/nes_cm.h1
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 7c942470b980..a09caf5b387d 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -426,6 +426,7 @@ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb,
if (type == NES_TIMER_TYPE_CLOSE) {
new_send->timetosend += (HZ/10);
if (cm_node->recv_entry) {
+ kfree(new_send);
WARN_ON(1);
return -EINVAL;
}
@@ -1262,7 +1263,6 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core,
cm_node->nesqp = NULL;
}
- cm_node->freed = 1;
kfree(cm_node);
return 0;
}
@@ -1999,13 +1999,17 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
if (loopbackremotelistener == NULL) {
create_event(cm_node, NES_CM_EVENT_ABORTED);
} else {
- atomic_inc(&cm_loopbacks);
loopback_cm_info = *cm_info;
loopback_cm_info.loc_port = cm_info->rem_port;
loopback_cm_info.rem_port = cm_info->loc_port;
loopback_cm_info.cm_id = loopbackremotelistener->cm_id;
loopbackremotenode = make_cm_node(cm_core, nesvnic,
&loopback_cm_info, loopbackremotelistener);
+ if (!loopbackremotenode) {
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
+ return NULL;
+ }
+ atomic_inc(&cm_loopbacks);
loopbackremotenode->loopbackpartner = cm_node;
loopbackremotenode->tcp_cntxt.rcv_wscale =
NES_CM_DEFAULT_RCV_WND_SCALE;
diff --git a/drivers/infiniband/hw/nes/nes_cm.h b/drivers/infiniband/hw/nes/nes_cm.h
index d5f778202eb7..80bba1892571 100644
--- a/drivers/infiniband/hw/nes/nes_cm.h
+++ b/drivers/infiniband/hw/nes/nes_cm.h
@@ -298,7 +298,6 @@ struct nes_cm_node {
struct nes_vnic *nesvnic;
int apbvt_set;
int accept_pend;
- int freed;
struct list_head timer_entry;
struct list_head reset_entry;
struct nes_qp *nesqp;