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linux-sg2042/net/sctp
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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
..
Kconfig net: sctp: get rid of SCTP_DBG_TSNS entirely 2013-07-02 00:08:03 -07:00
Makefile sctp: implement sctp association probing module 2010-04-30 22:41:09 -04:00
associola.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
auth.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
bind_addr.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
chunk.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
command.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
debug.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
endpointola.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
input.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
inqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ipv6.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
objcnt.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
output.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
outqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
primitive.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
probe.c net: sctp: attribute printl with __printf for gcc fmt checks 2013-05-01 15:04:10 -04:00
proc.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
protocol.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
sm_make_chunk.c net: sctp: Add rudimentary infrastructure to account for control chunks 2013-08-13 15:04:02 -07:00
sm_sideeffect.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sm_statefuns.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sm_statetable.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
socket.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ssnmap.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
sysctl.c Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl" 2013-08-09 13:09:41 -07:00
transport.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
tsnmap.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ulpevent.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00
ulpqueue.c net: sctp: trivial: update bug report in header comment 2013-08-09 11:33:02 -07:00