diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-04-10 13:29:44 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-13 13:47:04 -0700 |
| commit | 1e3769dc9ac7559010cfad5400896f24f1d33ad3 (patch) | |
| tree | 087bb158ff5ac279e875a12a67e10068eabfcc46 /net | |
| parent | 9e45b2f0fd14f032b1fcbaae0b2548274a9cc9be (diff) | |
Fix IFB net driver input device crashes
[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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 8 | ||||
| -rw-r--r-- | net/core/skbuff.c | 2 | ||||
| -rw-r--r-- | net/sched/act_mirred.c | 2 |
3 files changed, 6 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 295f8f9d22df..2a587b861620 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 5299083077fa..ba94969041dd 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -497,7 +497,7 @@ 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 diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c index 483897271f15..7263a2e91db1 100644 --- a/net/sched/act_mirred.c +++ b/net/sched/act_mirred.c @@ -199,7 +199,7 @@ bad_mirred: skb2->tc_verd = SET_TC_FROM(skb2->tc_verd, at); skb2->dev = dev; - skb2->input_dev = skb->dev; + skb2->iif = skb->dev->ifindex; dev_queue_xmit(skb2); spin_unlock(&m->tcf_lock); return m->tcf_action; |