diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-03-29 11:46:52 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-03-29 11:46:52 -0700 |
| commit | c01003c20563d1e75ec9828d21743919d2b43977 (patch) | |
| tree | 21cae8933e8a4908d8e8c24244a627bf0c997e77 /net/core | |
| parent | db8b22550d4b83f0910d27a34d05aa16f7f7159f (diff) | |
| download | linux-c01003c20563d1e75ec9828d21743919d2b43977.tar.gz linux-c01003c20563d1e75ec9828d21743919d2b43977.tar.bz2 linux-c01003c20563d1e75ec9828d21743919d2b43977.zip | |
[IFB]: Fix crash on input device removal
The input_device pointer is not refcounted, which means the device may
disappear while packets are queued, causing a crash when ifb passes packets
with a stale skb->dev pointer to netif_rx().
Fix by storing the interface index instead and do a lookup where neccessary.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 8 | ||||
| -rw-r--r-- | net/core/skbuff.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 5984b55311a1..d44b8f1964fa 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1741,8 +1741,8 @@ static int ing_filter(struct sk_buff *skb) if (dev->qdisc_ingress) { __u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd); if (MAX_RED_LOOP < ttl++) { - printk(KERN_WARNING "Redir loop detected Dropping packet (%s->%s)\n", - skb->input_dev->name, skb->dev->name); + printk(KERN_WARNING "Redir loop detected Dropping packet (%d->%d)\n", + skb->iif, skb->dev->ifindex); return TC_ACT_SHOT; } @@ -1775,8 +1775,8 @@ int netif_receive_skb(struct sk_buff *skb) if (!skb->tstamp.off_sec) net_timestamp(skb); - if (!skb->input_dev) - skb->input_dev = skb->dev; + if (!skb->iif) + skb->iif = skb->dev->ifindex; orig_dev = skb_bond(skb); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 702fa8f08747..87573ae35b02 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -496,7 +496,7 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask) n->tc_verd = SET_TC_VERD(skb->tc_verd,0); n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd); n->tc_verd = CLR_TC_MUNGED(n->tc_verd); - C(input_dev); + C(iif); #endif skb_copy_secmark(n, skb); #endif |