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207df81501
linux/net
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Liping Zhang 207df81501 netfilter: ctnetlink: skip dumping expect when nfct_help(ct) is NULL 
For IPCTNL_MSG_EXP_GET, if the CTA_EXPECT_MASTER attr is specified, then
the NLM_F_DUMP request will dump the expectations related to this
connection tracking.

But we forget to check whether the conntrack has nf_conn_help or not,
so if nfct_help(ct) is NULL, oops will happen:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
 IP: ctnetlink_exp_ct_dump_table+0xf9/0x1e0 [nf_conntrack_netlink]
 Call Trace:
  ? ctnetlink_exp_ct_dump_table+0x75/0x1e0 [nf_conntrack_netlink]
  netlink_dump+0x124/0x2a0
  __netlink_dump_start+0x161/0x190
  ctnetlink_dump_exp_ct+0x16c/0x1bc [nf_conntrack_netlink]
  ? ctnetlink_exp_fill_info.constprop.33+0xf0/0xf0 [nf_conntrack_netlink]
  ? ctnetlink_glue_seqadj+0x20/0x20 [nf_conntrack_netlink]
  ctnetlink_get_expect+0x32e/0x370 [nf_conntrack_netlink]
  ? debug_lockdep_rcu_enabled+0x1d/0x20
  nfnetlink_rcv_msg+0x60a/0x6a9 [nfnetlink]
  ? nfnetlink_rcv_msg+0x1b9/0x6a9 [nfnetlink]
  [...]

Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-04-08 23:52:17 +02:00
..
6lowpan 6lowpan: use rb_entry() 2017-01-22 16:46:13 -05:00
9p Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 21:44:35 -08:00
802 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
8021q net: remove ndo_neigh_{construct, destroy} from stacked devices 2017-02-06 11:25:57 -05:00
appletalk lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
atm net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
ax25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
batman-adv Here are two batman-adv bugfixes: 2017-03-16 12:05:38 -07:00
bluetooth net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
bridge bridge: resolve a false alarm of lockdep 2017-03-16 21:29:20 -07:00
caif sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
can can: bcm: fix hrtimer/tasklet termination in bcm op removal 2017-01-30 11:05:04 +01:00
ceph libceph: osd_request_timeout option 2017-03-07 14:30:38 +01:00
core flow dissector: correct size of storage for ARP 2017-04-03 14:46:45 -07:00
dcb net: dcb: set error code on failures 2016-12-03 23:54:25 -05:00
dccp dccp: fix memory leak during tear-down of unsuccessful connection request 2017-03-13 22:00:42 -07:00
decnet net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
dns_resolver Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-11 02:31:11 -05:00
ethernet Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2017-02-16 21:25:49 -05:00
hsr net/hsr: use eth_hw_addr_random() 2017-02-21 13:25:22 -05:00
ieee802154 lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
ife net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
ipv4 tcp: minimize false-positives on TCP/GRO check 2017-04-03 18:43:41 -07:00
ipv6 ipv6: make sure to initialize sockc.tsflags before first use 2017-03-22 12:40:22 -07:00
ipx ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
irda net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
iucv net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
kcm kcm: return immediately after copy_from_user() failure 2017-03-24 13:13:53 -07:00
key netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
l2tp l2tp: take a reference on sessions used in genetlink handlers 2017-04-01 20:16:41 -07:00
l3mdev
lapb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
llc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
mac80211 mac80211: unconditionally start new netdev queues with iTXQ support 2017-03-29 14:20:40 +02:00
mac802154 sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h> 2017-03-02 08:42:38 +01:00
mpls net: mpls: Fix nexthop alive tracking on down events 2017-03-16 20:22:18 -07:00
ncsi
netfilter netfilter: ctnetlink: skip dumping expect when nfct_help(ct) is NULL 2017-04-08 23:52:17 +02:00
netlabel netlabel: add CALIPSO to the list of built-in protocols 2017-01-06 22:20:45 -05:00
netlink genetlink: fix counting regression on ctrl_dumpfamily() 2017-03-22 15:38:43 -07:00
netrom net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
nfc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
openvswitch openvswitch: Fix ovs_flow_key_update() 2017-04-01 12:16:46 -07:00
packet net/packet: fix overflow in check for tp_reserve 2017-03-30 11:04:00 -07:00
phonet net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
psample net: Introduce psample, a new genetlink channel for packet sampling 2017-01-24 13:44:28 -05:00
qrtr net: qrtr: Mark 'buf' as little endian 2017-01-10 20:45:04 -05:00
rds net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rfkill rfkill: remove rfkill-regulator 2017-01-24 11:07:35 +01:00
rose net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rxrpc rxrpc: Ignore BUSY packets on old calls 2017-03-16 21:27:57 -07:00
sched sch_dsmark: fix invalid skb_cow() usage 2017-03-21 17:21:27 -07:00
sctp sctp: check for dst and pathmtu update in sctp_packet_config 2017-04-03 14:54:33 -07:00
smc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
strparser strparser: destroy workqueue on module exit 2017-03-03 20:43:26 -08:00
sunrpc NFS client fixes for 4.11 2017-03-17 14:16:22 -07:00
switchdev
tipc tipc: fix nametbl deadlock at tipc_nametbl_unsubscribe 2017-03-22 11:59:16 -07:00
unix net: unix: properly re-increment inflight counter of GC discarded candidates 2017-03-21 15:25:10 -07:00
vmw_vsock vsock: cancel packets when failing to connect 2017-03-21 14:41:47 -07:00
wimax
wireless cfg80211: check rdev resume callback only for registered wiphy 2017-03-29 09:11:29 +02:00
x25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2017-03-07 15:00:37 -08:00
compat.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
Kconfig bpf: make jited programs visible in traces 2017-02-17 13:40:05 -05:00
Makefile net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
socket.c tcp: mark skbs with SCM_TIMESTAMPING_OPT_STATS 2017-03-21 18:44:17 -07:00
sysctl_net.c