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authorKuniyuki Iwashima <kuniyu@amazon.com>2022-08-23 10:46:46 -0700
committerDavid S. Miller <davem@davemloft.net>2022-08-24 13:46:57 +0100
commit5dcd08cd19912892586c6082d56718333e2d19db (patch)
tree0c29065e2077fc424d1d16c459d887dc81c10b5c /net/xfrm/xfrm_input.c
parentbf955b5ab8f6f7b0632cdef8e36b14e4f6e77829 (diff)
net: Fix data-races around netdev_max_backlog.
While reading netdev_max_backlog, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. While at it, we remove the unnecessary spaces in the doc. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/xfrm_input.c')
-rw-r--r--net/xfrm/xfrm_input.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 70a8c36f0ba6..b2f4ec9c537f 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -782,7 +782,7 @@ int xfrm_trans_queue_net(struct net *net, struct sk_buff *skb,
trans = this_cpu_ptr(&xfrm_trans_tasklet);
- if (skb_queue_len(&trans->queue) >= netdev_max_backlog)
+ if (skb_queue_len(&trans->queue) >= READ_ONCE(netdev_max_backlog))
return -ENOBUFS;
BUILD_BUG_ON(sizeof(struct xfrm_trans_cb) > sizeof(skb->cb));