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authorTom Herbert <therbert@google.com>2010-11-01 12:55:52 -0700
committerDavid S. Miller <davem@davemloft.net>2010-11-01 12:55:52 -0700
commitdf32cc193ad88f7b1326b90af799c927b27f7654 (patch)
tree535d945c8507f8ac85575aed481bad9892a5e243 /net/core
parent315daea9481277d9b8109b47e974835a901e4bc5 (diff)
downloadop-kernel-dev-df32cc193ad88f7b1326b90af799c927b27f7654.zip
op-kernel-dev-df32cc193ad88f7b1326b90af799c927b27f7654.tar.gz
net: check queue_index from sock is valid for device
In dev_pick_tx recompute the queue index if the value stored in the socket is greater than or equal to the number of real queues for the device. The saved index in the sock structure is not guaranteed to be appropriate for the egress device (this could happen on a route change or in presence of tunnelling). The result of the queue index being bad would be to return a bogus queue (crash could prersumably follow). Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 35dfb83..0dd54a6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2131,7 +2131,7 @@ static struct netdev_queue *dev_pick_tx(struct net_device *dev,
} else {
struct sock *sk = skb->sk;
queue_index = sk_tx_queue_get(sk);
- if (queue_index < 0) {
+ if (queue_index < 0 || queue_index >= dev->real_num_tx_queues) {
queue_index = 0;
if (dev->real_num_tx_queues > 1)
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