Eric Dumazet 197c949e77 udp: properly support MSG_PEEK with truncated buffers ... Backport of this upstream commit into stable kernels : 89c22d8c3b ("net: Fix skb csum races when peeking") exposed a bug in udp stack vs MSG_PEEK support, when user provides a buffer smaller than skb payload. In this case, skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov); returns -EFAULT. This bug does not happen in upstream kernels since Al Viro did a great job to replace this into : skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr), msg); This variant is safe vs short buffers. For the time being, instead reverting Herbert Xu patch and add back skb->ip_summed invalid changes, simply store the result of udp_lib_checksum_complete() so that we avoid computing the checksum a second time, and avoid the problematic skb_copy_and_csum_datagram_iovec() call. This patch can be applied on recent kernels as it avoids a double checksumming, then backported to stable kernels as a bug fix. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-01-04 17:23:36 -05:00
..
6lowpan	6lowpan: fix debugfs interface entry name	2015-12-20 08:21:00 +01:00
9p	IB/cma: Add support for network namespaces	2015-10-28 12:32:48 -04:00
802
8021q	net: Rename NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK	2015-12-15 16:50:08 -05:00
appletalk
atm	net: Generalise wq_has_sleeper helper	2015-11-30 14:47:33 -05:00
ax25	net: add validation for the socket syscall protocol argument	2015-12-14 16:09:30 -05:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-17 22:08:28 -05:00
bluetooth	Bluetooth: use list_for_each_entry*	2015-12-20 08:11:10 +01:00
bridge	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-31 18:20:10 -05:00
caif	net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA	2015-12-01 15:45:05 -05:00
can	can: avoid using timeval for uapi	2015-10-13 17:42:34 +02:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-11-13 09:24:40 -08:00
core	ethtool: Add phy statistics	2015-12-31 00:53:10 -05:00
dcb	net/dcb: make dcbnl.c explicitly non-modular	2015-10-09 07:52:27 -07:00
dccp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-03 21:09:12 -05:00
decnet	net: add validation for the socket syscall protocol argument	2015-12-14 16:09:30 -05:00
dns_resolver	net: dns_resolver: convert time_t to time64_t	2015-11-18 16:27:46 -05:00
dsa	net: dsa: move dsa slave destroy code to slave.c	2015-12-07 16:35:50 -05:00
ethernet	net: help compiler generate better code in eth_get_headlen	2015-09-28 22:51:15 -07:00
hsr	net/hsr: fix a warning message	2015-11-23 14:56:15 -05:00
ieee802154	6lowpan: add lowpan dev register helpers	2015-12-10 01:25:25 +01:00
ipv4	udp: properly support MSG_PEEK with truncated buffers	2016-01-04 17:23:36 -05:00
ipv6	udp: properly support MSG_PEEK with truncated buffers	2016-01-04 17:23:36 -05:00
ipx
irda	net: add validation for the socket syscall protocol argument	2015-12-14 16:09:30 -05:00
iucv	iucv: call skb_linearize() when needed	2015-12-14 16:16:44 -05:00
key	af_key: fix two typos	2015-10-23 03:05:19 -07:00
l2tp	l2tp: rely on ppp layer for skb scrubbing	2016-01-04 16:45:24 -05:00
l3mdev	net: Add netif_is_l3_slave	2015-10-07 04:27:43 -07:00
lapb
llc	tcp: fix recv with flags MSG_WAITALL | MSG_PEEK	2015-07-27 01:06:53 -07:00
mac80211	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-17 22:08:28 -05:00
mac802154	mac802154: tx: fix synced xmit deadlock	2015-12-10 19:17:11 +01:00
mpls	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-17 22:08:28 -05:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-31 18:20:10 -05:00
netlabel
netlink	netlink: add a start callback for starting a netlink dump	2015-12-15 23:25:20 -05:00
netrom	netfilter: Remove spurios included of netfilter.h	2015-06-18 21:14:32 +02:00
nfc	net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA	2015-12-01 15:45:05 -05:00
openvswitch	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-31 18:20:10 -05:00
packet	packet: Allow packets with only a header (but no payload)	2015-11-29 22:17:17 -05:00
phonet
rds	RDS: don't pretend to use cpu notifiers	2015-12-22 15:23:05 -05:00
rfkill	rfkill: copy the name into the rfkill struct	2015-12-10 10:37:51 +01:00
rose	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-06-24 02:58:51 -07:00
rxrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-03 21:09:12 -05:00
sched	net_sched: make qdisc_tree_decrease_qlen() work for non mq	2015-12-15 13:41:52 -05:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-31 18:20:10 -05:00
sunrpc	sched/wait: Fix the signal handling fix	2015-12-13 14:30:59 -08:00
switchdev	switchdev: Pass original device to port netdev driver	2015-12-15 11:58:20 -05:00
tipc	ip_tunnel: Move stats update to iptunnel_xmit()	2015-12-25 23:32:23 -05:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-17 22:08:28 -05:00
vmw_vsock	Revert "Merge branch 'vsock-virtio'"	2015-12-08 21:55:49 -05:00
wimax	net:wimax: Fix doucble word "the the" in networking.xml	2015-08-09 22:43:52 -07:00
wireless	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-17 22:08:28 -05:00
x25
xfrm	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2015-12-22 16:26:31 -05:00
compat.c
Kconfig	net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct	2015-12-08 22:02:33 -05:00
Makefile	net: Introduce L3 Master device abstraction	2015-09-29 20:40:32 -07:00
socket.c	net, socket, socket_wq: fix missing initialization of flags	2015-12-30 16:38:01 -05:00
sysctl_net.c	net: sysctl: fix a kmemleak warning	2015-10-23 06:22:08 -07:00