Eric Dumazet f2c31e32b3 net: fix NULL dereferences in check_peer_redir() ... Gergely Kalman reported crashes in check_peer_redir(). It appears commit f39925dbde (ipv4: Cache learned redirect information in inetpeer.) added a race, leading to possible NULL ptr dereference. Since we can now change dst neighbour, we should make sure a reader can safely use a neighbour. Add RCU protection to dst neighbour, and make sure check_peer_redir() can be called safely by different cpus in parallel. As neighbours are already freed after one RCU grace period, this patch should not add typical RCU penalty (cache cold effects) Many thanks to Gergely for providing a pretty report pointing to the bug. Reported-by: Gergely Kalman <synapse@hippy.csoma.elte.hu> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-08-03 03:34:12 -07:00
..
9p	fs/9p: add 9P2000.L unlinkat operation	2011-07-23 09:32:52 -05:00
bluetooth	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem	2011-07-15 10:05:24 -04:00
caif	caif: Add CAIF HSI Link layer driver	2011-06-01 21:15:38 -07:00
irda	…
iucv	…
netfilter	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
netns	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
phonet	…
sctp	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
tc_act	…
act_api.h	net: sched: constify tcf_proto and tc_action	2011-07-06 02:52:16 -07:00
addrconf.h	…
af_ieee802154.h	…
af_rxrpc.h	…
af_unix.h	…
ah.h	…
arp.h	net: Add ->neigh_lookup() operation to dst_ops	2011-07-18 00:40:17 -07:00
atmclip.h	…
ax25.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
ax88796.h	…
cfg80211.h	cfg80211: allow userspace to control supported rates in scan	2011-07-19 16:49:58 -04:00
checksum.h	…
cipso_ipv4.h	doc: Update the email address for Paul Moore in various source files	2011-08-01 17:58:33 -07:00
cls_cgroup.h	…
compat.h	…
datalink.h	…
dcbevent.h	…
dcbnl.h	dcbnl: Add CEE notification	2011-07-05 23:42:17 -07:00
dn.h	…
dn_dev.h	…
dn_fib.h	…
dn_neigh.h	…
dn_nsp.h	…
dn_route.h	…
dsa.h	…
dsfield.h	…
dst.h	net: fix NULL dereferences in check_peer_redir()	2011-08-03 03:34:12 -07:00
dst_ops.h	net: Add ->neigh_lookup() operation to dst_ops	2011-07-18 00:40:17 -07:00
esp.h	…
ethoc.h	…
fib_rules.h	…
flow.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
garp.h	…
gen_stats.h	…
genetlink.h	netlink: advertise incomplete dumps	2011-06-22 16:09:45 -04:00
gre.h	…
icmp.h	…
ieee80211_radiotap.h	…
ieee802154.h	…
ieee802154_netdev.h	…
if_inet6.h	…
inet6_connection_sock.h	…
inet6_hashtables.h	…
inet_common.h	…
inet_connection_sock.h	…
inet_ecn.h	…
inet_frag.h	…
inet_hashtables.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
inet_sock.h	…
inet_timewait_sock.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
inetpeer.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
ip.h	ipv4: Add ip_defrag() agent IP_DEFRAG_AF_PACKET.	2011-07-05 22:34:52 -07:00
ip6_checksum.h	…
ip6_fib.h	ipv6: Get rid of rt6i_nexthop macro.	2011-07-17 23:11:35 -07:00
ip6_route.h	…
ip6_tunnel.h	…
ip_fib.h	…
ip_vs.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
ipcomp.h	…
ipconfig.h	…
ipip.h	…
ipv6.h	ipv6: make fragment identifications less predictable	2011-07-21 21:25:58 -07:00
ipx.h	…
iw_handler.h	…
lapb.h	…
lib80211.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
llc.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
llc_c_ac.h	…
llc_c_ev.h	…
llc_c_st.h	…
llc_conn.h	…
llc_if.h	…
llc_pdu.h	…
llc_s_ac.h	…
llc_s_ev.h	…
llc_s_st.h	…
llc_sap.h	…
mac80211.h	mac80211: sync driver before TX	2011-07-20 15:04:35 -04:00
mip6.h	…
mld.h	…
ndisc.h	…
neighbour.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
net_namespace.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
net_ratelimit.h	net: Kill ratelimit.h dependency in linux/net.h	2011-05-27 13:41:33 -04:00
netdma.h	…
netevent.h	…
netlabel.h	doc: Update the email address for Paul Moore in various source files	2011-08-01 17:58:33 -07:00
netlink.h	netlink: advertise incomplete dumps	2011-06-22 16:09:45 -04:00
netrom.h	…
nexthop.h	…
nfc.h	NFC: add nfc generic netlink interface	2011-07-05 15:26:57 -04:00
nl802154.h	…
p8022.h	…
ping.h	…
pkt_cls.h	…
pkt_sched.h	net: sched: constify tcf_proto and tc_action	2011-07-06 02:52:16 -07:00
protocol.h	…
psnap.h	…
raw.h	…
rawv6.h	…
red.h	…
regulatory.h	…
request_sock.h	…
rose.h	…
route.h	…
rtnetlink.h	rtnetlink: Compute and store minimum ifinfo dump size	2011-06-09 20:38:07 -07:00
sch_generic.h	net: sched: constify tcf_proto and tc_action	2011-07-06 02:52:16 -07:00
scm.h	…
slhc_vj.h	…
snmp.h	snmp: reduce percpu needs by 50%	2011-06-11 16:23:59 -07:00
sock.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-07-25 13:56:39 -07:00
stp.h	…
tcp.h	tcp: RFC2988bis + taking RTT sample from 3WHS for the passive open side	2011-06-08 17:05:30 -07:00
tcp_states.h	…
timewait_sock.h	…
transp_v6.h	…
udp.h	…
udplite.h	…
wext.h	…
wimax.h	net: wimax: Remove of unused 'rfkill_input' pointer	2011-06-24 17:50:44 -07:00
wpan-phy.h	…
x25.h	…
x25device.h	…
xfrm.h	…