From be139f75e2bdd069a9f2429339a042021e53159d Mon Sep 17 00:00:00 2001 From: Thomas Chenault Date: Mon, 18 May 2009 21:43:27 -0700 Subject: net: fix skb_seq_read returning wrong offset/length for page frag data [ Upstream commit 995b337952cdf7e05d288eede580257b632a8343 ] When called with a consumed value that is less than skb_headlen(skb) bytes into a page frag, skb_seq_read() incorrectly returns an offset/length relative to skb->data. Ensure that data which should come from a page frag does. Signed-off-by: Thomas Chenault Tested-by: Shyam Iyer Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/core/skbuff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 06759919029..7832287677d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1992,7 +1992,7 @@ unsigned int skb_seq_read(unsigned int consumed, const u8 **data, next_skb: block_limit = skb_headlen(st->cur_skb) + st->stepped_offset; - if (abs_offset < block_limit) { + if (abs_offset < block_limit && !st->frag_data) { *data = st->cur_skb->data + (abs_offset - st->stepped_offset); return block_limit - abs_offset; } -- cgit v1.2.3-18-g5258