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authorDavid S. Miller <davem@davemloft.net>2016-12-03 11:46:54 -0500
committerDavid S. Miller <davem@davemloft.net>2016-12-03 12:29:53 -0500
commit2745529ac7358fdac72e6b388da2e934bd9da82c (patch)
tree245bb05b1a18189c5a5212db914c70a636d8267a /net/dccp
parentMerge tag 'wireless-drivers-next-for-davem-2016-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next (diff)
parentMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (diff)
downloadlinux-dev-2745529ac7358fdac72e6b388da2e934bd9da82c.tar.xz
linux-dev-2745529ac7358fdac72e6b388da2e934bd9da82c.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Couple conflicts resolved here: 1) In the MACB driver, a bug fix to properly initialize the RX tail pointer properly overlapped with some changes to support variable sized rings. 2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix overlapping with a reorganization of the driver to support ACPI, OF, as well as PCI variants of the chip. 3) In 'net' we had several probe error path bug fixes to the stmmac driver, meanwhile a lot of this code was cleaned up and reorganized in 'net-next'. 4) The cls_flower classifier obtained a helper function in 'net-next' called __fl_delete() and this overlapped with Daniel Borkamann's bug fix to use RCU for object destruction in 'net'. It also overlapped with Jiri's change to guard the rhashtable_remove_fast() call with a check against tc_skip_sw(). 5) In mlx4, a revert bug fix in 'net' overlapped with some unrelated changes in 'net-next'. 6) In geneve, a stale header pointer after pskb_expand_head() bug fix in 'net' overlapped with a large reorganization of the same code in 'net-next'. Since the 'net-next' code no longer had the bug in question, there was nothing to do other than to simply take the 'net-next' hunks. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp')
-rw-r--r--net/dccp/ipv4.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index fda321d814d6..d859a5c36e70 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -694,6 +694,7 @@ int dccp_invalid_packet(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
unsigned int cscov;
+ u8 dccph_doff;
if (skb->pkt_type != PACKET_HOST)
return 1;
@@ -715,18 +716,19 @@ int dccp_invalid_packet(struct sk_buff *skb)
/*
* If P.Data Offset is too small for packet type, drop packet and return
*/
- if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) {
- DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff);
+ dccph_doff = dh->dccph_doff;
+ if (dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) {
+ DCCP_WARN("P.Data Offset(%u) too small\n", dccph_doff);
return 1;
}
/*
* If P.Data Offset is too too large for packet, drop packet and return
*/
- if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) {
- DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff);
+ if (!pskb_may_pull(skb, dccph_doff * sizeof(u32))) {
+ DCCP_WARN("P.Data Offset(%u) too large\n", dccph_doff);
return 1;
}
-
+ dh = dccp_hdr(skb);
/*
* If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet
* has short sequence numbers), drop packet and return