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Vlad Yasevich 072017b41e net: sctp: Add rudimentary infrastructure to account for control chunks 
This patch adds a base infrastructure that allows SCTP to do
memory accounting for control chunks.  Real accounting code will
follow.

This patch alos fixes the following triggered bug ...

[  553.109742] kernel BUG at include/linux/skbuff.h:1813!
[  553.109766] invalid opcode: 0000 [#1] SMP
[  553.109789] Modules linked in: sctp libcrc32c rfcomm [...]
[  553.110259]  uinput i915 i2c_algo_bit drm_kms_helper e1000e drm ptp
pps_core i2c_core wmi video sunrpc
[  553.110320] CPU: 0 PID: 1636 Comm: lt-test_1_to_1_ Not tainted
3.11.0-rc3+ #2
[  553.110350] Hardware name: LENOVO 74597D6/74597D6, BIOS 6DET60WW
(3.10 ) 09/17/2009
[  553.110381] task: ffff88020a01dd40 ti: ffff880204ed0000 task.ti:
ffff880204ed0000
[  553.110411] RIP: 0010:[<ffffffffa0698017>]  [<ffffffffa0698017>]
skb_orphan.part.9+0x4/0x6 [sctp]
[  553.110459] RSP: 0018:ffff880204ed1bb8  EFLAGS: 00010286
[  553.110483] RAX: ffff8802086f5a40 RBX: ffff880204303300 RCX:
0000000000000000
[  553.110487] RDX: ffff880204303c28 RSI: ffff8802086f5a40 RDI:
ffff880202158000
[  553.110487] RBP: ffff880204ed1bb8 R08: 0000000000000000 R09:
0000000000000000
[  553.110487] R10: ffff88022f2d9a04 R11: ffff880233001600 R12:
0000000000000000
[  553.110487] R13: ffff880204303c00 R14: ffff8802293d0000 R15:
ffff880202158000
[  553.110487] FS:  00007f31b31fe740(0000) GS:ffff88023bc00000(0000)
knlGS:0000000000000000
[  553.110487] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  553.110487] CR2: 000000379980e3e0 CR3: 000000020d225000 CR4:
00000000000407f0
[  553.110487] Stack:
[  553.110487]  ffff880204ed1ca8 ffffffffa068d7fc 0000000000000000
0000000000000000
[  553.110487]  0000000000000000 ffff8802293d0000 ffff880202158000
ffffffff81cb7900
[  553.110487]  0000000000000000 0000400000001c68 ffff8802086f5a40
000000000000000f
[  553.110487] Call Trace:
[  553.110487]  [<ffffffffa068d7fc>] sctp_sendmsg+0x6bc/0xc80 [sctp]
[  553.110487]  [<ffffffff8128f185>] ? sock_has_perm+0x75/0x90
[  553.110487]  [<ffffffff815a3593>] inet_sendmsg+0x63/0xb0
[  553.110487]  [<ffffffff8128f2b3>] ? selinux_socket_sendmsg+0x23/0x30
[  553.110487]  [<ffffffff8151c5d6>] sock_sendmsg+0xa6/0xd0
[  553.110487]  [<ffffffff81637b05>] ? _raw_spin_unlock_bh+0x15/0x20
[  553.110487]  [<ffffffff8151cd38>] SYSC_sendto+0x128/0x180
[  553.110487]  [<ffffffff8151ce6b>] ? SYSC_connect+0xdb/0x100
[  553.110487]  [<ffffffffa0690031>] ? sctp_inet_listen+0x71/0x1f0
[sctp]
[  553.110487]  [<ffffffff8151d35e>] SyS_sendto+0xe/0x10
[  553.110487]  [<ffffffff81640202>] system_call_fastpath+0x16/0x1b
[  553.110487] Code: e0 48 c7 c7 00 22 6a a0 e8 67 a3 f0 e0 48 c7 [...]
[  553.110487] RIP  [<ffffffffa0698017>] skb_orphan.part.9+0x4/0x6
[sctp]
[  553.110487]  RSP <ffff880204ed1bb8>
[  553.121578] ---[ end trace 46c20c5903ef5be2 ]---

The approach taken here is to split data and control chunks
creation a  bit.  Data chunks already have memory accounting
so noting needs to happen.  For control chunks, add stubs handlers.

Signed-off-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2013-08-13 15:04:02 -07:00
..
9p 9p: client: remove unused code and any reference to "cancelled" function 2013-07-30 15:54:28 -07:00
802
…
8021q vlan: cleanup the usage of vlan_dev_priv(dev) 2013-08-03 10:32:25 -07:00
appletalk net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
atm net: always pass struct netdev_notifier_info to netdevice notifiers 2013-05-28 21:58:54 -07:00
ax25 net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
batman-adv net: Unmap fragment page once iterator is done 2013-06-24 01:46:01 -07:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2013-07-31 15:11:50 -04:00
bridge bridge: fix rcu check warning in multicast port group 2013-08-04 18:41:52 -07:00
caif net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
can net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
ceph net: add sk_stream_is_writeable() helper 2013-07-24 17:54:48 -07:00
core net: attempt high order allocations in sock_alloc_send_pskb() 2013-08-10 01:16:44 -07:00
dcb
…
dccp net: add sk_stream_is_writeable() helper 2013-07-24 17:54:48 -07:00
decnet net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
dns_resolver net: strict_strtoul is obsolete, use kstrtoul instead 2013-07-12 16:09:14 -07:00
dsa
…
ethernet net: Fix sysfs_format_mac() code duplication. 2013-07-16 17:09:22 -07:00
ieee802154 net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
ipv4 tcp: add server ip to encrypt cookie in fast open 2013-08-10 00:35:33 -07:00
ipv6 net: add SNMP counters tracking incoming ECN bits 2013-08-08 22:24:59 -07:00
ipx net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
irda net/irda: fixed style issues in irttp 2013-07-19 17:34:40 -07:00
iucv net: delete __cpuinit usage from all net files 2013-07-14 19:36:58 -04:00
key af_key: more info leaks in pfkey messages 2013-07-30 16:26:16 -07:00
l2tp l2tp: make datapath resilient to packet loss when sequence numbers enabled 2013-07-02 16:33:25 -07:00
lapb
…
llc
…
mac80211 mac80211: fix monitor interface suspend crash regression 2013-07-23 14:02:08 +02:00
mac802154
…
mpls MPLS: Add limited GSO support 2013-05-27 22:50:59 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-03 21:36:46 -07:00
netlabel netlabel: use domain based selectors when address based selectors are not available 2013-08-02 16:57:01 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-03 21:36:46 -07:00
netrom net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
nfc NFC: netlink: Rename CMD_FW_UPLOAD to CMD_FW_DOWNLOAD 2013-07-31 01:19:43 +02:00
openvswitch openvswitch: Add Kconfig dependency on GRE-DEMUX. 2013-07-01 13:19:43 -07:00
packet net: attempt high order allocations in sock_alloc_send_pskb() 2013-08-10 01:16:44 -07:00
phonet net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
rds net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
rfkill
…
rose net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
rxrpc
…
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-03 21:36:46 -07:00
sctp net: sctp: Add rudimentary infrastructure to account for control chunks 2013-08-13 15:04:02 -07:00
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-03 21:36:46 -07:00
tipc tipc: fix oops when creating server socket fails 2013-08-01 15:54:33 -07:00
unix af_unix: fix bug on large send() 2013-08-11 22:02:36 -07:00
vmw_vsock VSOCK: Move af_vsock.h and vsock_addr.h to include/net 2013-07-27 22:14:06 -07:00
wimax
…
wireless regulatory: use correct regulatory initiator on wiphy register 2013-07-25 09:52:46 +02:00
x25 x25: Fix broken locking in ioctl error paths. 2013-07-01 18:15:25 -07:00
xfrm net: split rt_genid for ipv4 and ipv6 2013-07-31 14:56:36 -07:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-03 21:36:46 -07:00
Makefile MPLS: Add limited GSO support 2013-05-27 22:50:59 -07:00
compat.c net: Unbreak compat_sys_{send,recv}msg 2013-06-06 11:52:14 -07:00
nonet.c
…
socket.c net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL 2013-08-01 15:11:17 -07:00
sysctl_net.c
…