lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[IPCOMP]: Fix truesize after decompression

Browse Source 
The truesize check has uncovered the fact that we forgot to update truesize
after pskb_expand_head.  Unfortunately pskb_expand_head can't update it for
us because it's used in all sorts of different contexts, some of which would
not allow truesize to be updated by itself.

So the solution for now is to simply update it in IPComp.

This patch also changes skb_put to __skb_put since we've just expanded
tailroom by exactly that amount so we know it's there (but gcc does not).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu
2006-07-11 13:50:09 -07:00
committed by David S. Miller
parent 8a6ce0c083
commit da952315c9
2 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
net/ipv4/ipcomp.c
View File

@@ -70,7 +70,8 @@ static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb)
if (err)
goto out;
skb_put(skb, dlen - plen);
skb->truesize += dlen - plen;
__skb_put(skb, dlen - plen);
memcpy(skb->data, scratch, dlen);
out:
put_cpu();