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authorReshetova, Elena <elena.reshetova@intel.com>2017-06-30 13:07:58 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-01 07:39:07 -0700
commit633547973ffc32fd2c815639d4675e1531f0896f (patch)
tree751ca7a379366af93f578d9f35f48339d4d2dd9b /drivers/infiniband/hw/nes/nes_cm.c
parentnet: convert nf_bridge_info.use from atomic_t to refcount_t (diff)
downloadlinux-dev-633547973ffc32fd2c815639d4675e1531f0896f.tar.xz
linux-dev-633547973ffc32fd2c815639d4675e1531f0896f.zip
net: convert sk_buff.users from atomic_t to refcount_t
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/infiniband/hw/nes/nes_cm.c')
-rw-r--r--drivers/infiniband/hw/nes/nes_cm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 30b256a2c54e..de4025deaa4a 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -742,7 +742,7 @@ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb,
if (type == NES_TIMER_TYPE_SEND) {
new_send->seq_num = ntohl(tcp_hdr(skb)->seq);
- atomic_inc(&new_send->skb->users);
+ refcount_inc(&new_send->skb->users);
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
cm_node->send_entry = new_send;
add_ref_cm_node(cm_node);
@@ -924,7 +924,7 @@ static void nes_cm_timer_tick(unsigned long pass)
flags);
break;
}
- atomic_inc(&send_entry->skb->users);
+ refcount_inc(&send_entry->skb->users);
cm_packets_retrans++;
nes_debug(NES_DBG_CM, "Retransmitting send_entry %p "
"for node %p, jiffies = %lu, time to send = "