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linux/net
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Hans Schillstrom 4cd9d968a1 ipvs: ip_vs_sip_fill_param() BUG: bad check of return value 
commit f7a1dd6e3a upstream.

The reason for this patch is crash in kmemdup
caused by returning from get_callid with uniialized
matchoff and matchlen.

Removing Zero check of matchlen since it's done by ct_sip_get_header()

BUG: unable to handle kernel paging request at ffff880457b5763f
IP: [<ffffffff810df7fc>] kmemdup+0x2e/0x35
PGD 27f6067 PUD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: xt_state xt_helper nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_mangle xt_connmark xt_conntrack ip6_tables nf_conntrack_ftp ip_vs_ftp nf_nat xt_tcpudp iptable_mangle xt_mark ip_tables x_tables ip_vs_rr ip_vs_lblcr ip_vs_pe_sip ip_vs nf_conntrack_sip nf_conntrack bonding igb i2c_algo_bit i2c_core
CPU 5
Pid: 0, comm: swapper/5 Not tainted 3.9.0-rc5+ #5                  /S1200KP
RIP: 0010:[<ffffffff810df7fc>]  [<ffffffff810df7fc>] kmemdup+0x2e/0x35
RSP: 0018:ffff8803fea03648  EFLAGS: 00010282
RAX: ffff8803d61063e0 RBX: 0000000000000003 RCX: 0000000000000003
RDX: 0000000000000003 RSI: ffff880457b5763f RDI: ffff8803d61063e0
RBP: ffff8803fea03658 R08: 0000000000000008 R09: 0000000000000011
R10: 0000000000000011 R11: 00ffffffff81a8a3 R12: ffff880457b5763f
R13: ffff8803d67f786a R14: ffff8803fea03730 R15: ffffffffa0098e90
FS:  0000000000000000(0000) GS:ffff8803fea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff880457b5763f CR3: 0000000001a0c000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/5 (pid: 0, threadinfo ffff8803ee18c000, task ffff8803ee18a480)
Stack:
 ffff8803d822a080 000000000000001c ffff8803fea036c8 ffffffffa000937a
 ffffffff81f0d8a0 000000038135fdd5 ffff880300000014 ffff880300110000
 ffffffff150118ac ffff8803d7e8a000 ffff88031e0118ac 0000000000000000
Call Trace:
 <IRQ>

 [<ffffffffa000937a>] ip_vs_sip_fill_param+0x13a/0x187 [ip_vs_pe_sip]
 [<ffffffffa007b209>] ip_vs_sched_persist+0x2c6/0x9c3 [ip_vs]
 [<ffffffff8107dc53>] ? __lock_acquire+0x677/0x1697
 [<ffffffff8100972e>] ? native_sched_clock+0x3c/0x7d
 [<ffffffff8100972e>] ? native_sched_clock+0x3c/0x7d
 [<ffffffff810649bc>] ? sched_clock_cpu+0x43/0xcf
 [<ffffffffa007bb1e>] ip_vs_schedule+0x181/0x4ba [ip_vs]
...

Signed-off-by: Hans Schillstrom <hans@schillstrom.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-11 13:48:08 -07:00
..
9p 9p: BUG before corrupting memory 2012-06-22 11:37:15 -07:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
8021q 8021q: fix a potential use-after-free 2013-04-05 10:04:38 -07:00
appletalk net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
atm atm: update msg_namelen in vcc_recvmsg() 2013-05-01 09:41:04 -07:00
ax25 ax25: fix info leak via msg_name in ax25_recvmsg() 2013-05-01 09:41:04 -07:00
batman-adv batman-adv: fix random jitter calculation 2013-01-11 09:07:03 -08:00
bluetooth Bluetooth: RFCOMM - Fix missing msg_namelen update in rfcomm_sock_recvmsg() 2013-05-01 09:41:04 -07:00
bridge bridge: set priority of STP packets 2013-02-28 06:59:05 -08:00
caif caif: Fix missing msg_namelen update in caif_seqpkt_recvmsg() 2013-05-01 09:41:04 -07:00
can can: gw: use kmem_cache_free() instead of kfree() 2013-04-12 09:38:47 -07:00
ceph rbd: remove linger unconditionally 2013-01-17 08:51:20 -08:00
core net: fix incorrect credentials passing 2013-05-01 09:41:16 -07:00
dcb dcbnl: fix various netlink info leaks 2013-03-20 13:05:02 -07:00
dccp inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock 2013-01-11 09:07:14 -08:00
decnet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
dns_resolver KEYS: Allow special keyrings to be cleared 2012-01-19 14:38:51 +11:00
dsa dsa: Move switch drivers to new directory drivers/net/dsa 2011-11-29 00:21:36 -05:00
econet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ethernet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ieee802154 6lowpan: Fix endianness issue in is_addr_link_local(). 2013-03-20 13:05:02 -07:00
ipv4 net: drop dst before queueing fragments 2013-05-01 09:41:20 -07:00
ipv6 net: drop dst before queueing fragments 2013-05-01 09:41:20 -07:00
ipx net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
irda irda: Fix missing msg_namelen update in irda_recvmsg_dgram() 2013-05-01 09:41:05 -07:00
iucv iucv: Fix missing msg_namelen update in iucv_sock_recvmsg() 2013-05-01 09:41:05 -07:00
key net/key/af_key.c: add missing kfree_skb 2012-04-13 11:01:44 -04:00
l2tp l2tp: Restore socket refcount when sendmsg succeeds 2013-03-20 13:05:01 -07:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc llc: Fix missing msg_namelen update in llc_ui_recvmsg() 2013-05-01 09:41:05 -07:00
mac80211 mac80211: synchronize scan off/on-channel and PS states 2013-02-03 18:24:42 -06:00
netfilter ipvs: ip_vs_sip_fill_param() BUG: bad check of return value 2013-05-11 13:48:08 -07:00
netlabel netlabel: correctly list all the static label mappings 2013-03-20 13:05:01 -07:00
netlink thermal: shorten too long mcast group name 2013-04-05 10:04:38 -07:00
netrom netrom: fix invalid use of sizeof in nr_recvmsg() 2013-05-01 09:41:06 -07:00
nfc NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg() 2013-05-01 09:41:05 -07:00
openvswitch openvswitch: Reset upper layer protocol info on internal devices. 2012-10-02 10:29:50 -07:00
packet packet: fix leakage of tx_ring memory 2013-02-14 10:49:05 -08:00
phonet phonet: Sort out initiailziation and cleanup code. 2012-04-13 11:01:43 -04:00
rds rds: limit the size allocated by rds_message_alloc() 2013-03-20 13:05:01 -07:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose rose: fix info leak via msg_name in rose_recvmsg() 2013-05-01 09:41:05 -07:00
rxrpc RxRPC: Fix kcalloc parameters swapped 2012-02-14 14:41:55 -05:00
sched cbq: incorrect processing of high limits 2013-05-01 09:41:06 -07:00
sctp net: sctp: sctp_auth_key_put: use kzfree instead of kfree 2013-05-01 09:41:08 -07:00
sunrpc SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked 2013-04-05 10:04:14 -07:00
tipc tipc: fix info leaks via msg_name in recv_msg/recv_stream 2013-05-01 09:41:05 -07:00
unix af_unix: If we don't care about credentials coallesce all messages 2013-05-01 09:41:07 -07:00
wanrouter wanmain: comparing array with NULL 2012-08-09 08:31:51 -07:00
wimax net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
wireless wireless: regulatory: fix channel disabling race condition 2013-05-07 19:51:56 -07:00
x25 net:x25: use IS_ENABLED 2011-12-16 15:49:52 -05:00
xfrm xfrm_user: ensure user supplied esn replay window is valid 2012-10-13 05:38:41 +09:00
compat.c net: Fix references to out-of-scope variables in put_cmsg_compat() 2012-08-09 08:31:42 -07:00
Kconfig net: Add Open vSwitch kernel components. 2011-12-03 09:35:17 -08:00
Makefile net: Add Open vSwitch kernel components. 2011-12-03 09:35:17 -08:00
nonet.c
socket.c net: fix info leak in compat dev_ifconf() 2012-10-02 10:29:37 -07:00
sysctl_net.c sysctl: Modify __register_sysctl_paths to take a set instead of a root and an nsproxy 2012-01-24 16:40:30 -08:00