[PATCH NET-NEXT 06/12] debug: NULL pointer check in ip_output

Patrick Ohly
2009-01-21T10:14:23Z

---
net/ipv4/ip_output.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ed92f0b..03a6706 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -950,8 +950,14 @@ alloc_new_skb:
skb->ip_summed = csummode;
skb->csum = 0;
skb_reserve(skb, hh_len);
- if (ipc->shtx.flags)
- *skb_tx(skb) = ipc->shtx;
+ if (ipc->shtx.flags) {
+ if (skb_tx(skb))
+ *skb_tx(skb) = ipc->shtx;
+ else
+ printk(KERN_DEBUG
+ "ERROR: skb with flags %x and no tx ptr\n",
+ ipc->shtx.flags);
+ }

/*
* Find where to start putting bytes.
--
1.5.5.3