Menu
▾
▴
[Lksctp-developers] LKSCTP crash/ panic
|
From: Gupta Nitin-A. <nit...@mo...> - 2009-01-28 01:04:29
|
Hi,
I am using lksctp version 1.0.7 having multiple {approx 5 to 10} sctp
end point [same ip/ diff ports].
We are observing sctp kernel panic when using all of these sockets using
sctp client.
Below are the 2 different variation which we could reproduce multiple
times in our lab.
While the console of machine becomes unusuable having sctp exceptions
dumping continuously,
accessing the machine through remote loging and checking /proc/net/sctp
entries shows some stale
data [end point info and association info]. Whereas /proc entries
supposed to be empty.
Can someone help fixing this issue with sctp ? its not been seen when
multiple sctp client talks to single end point.
In either sctp crash/panic, below error printed repeatedly.
==================================
sctp_generate_timeout_event:Sock is busy: timer 8
sctp_generate_heartbeat_event:Sock is busy.
==================================
1/
CPU 3 Unable to handle kernel paging request at virtual address
fdfdfdfdfdfdfed5, epc == ffffffff837d8224, ra == ffffffff837cbb48
Oops[#1]:
Cpu 3
$ 0 : 0000000000000000 000000001000dce0 a8000002146db590
a8000002146db590
$ 4 : a80000021422cec0 0000000000000000 a800000214143920
0000000000000000
$ 8 : 00000000078fcc84 00000000078f4c84 0000000000008001
ffffffff84650000
$12 : ffffffff84640000 ffffffff84640000 fffffffffffffffd
ffffffff8380cb68
$16 : fdfdfdfdfdfdfdfd a80000021422cec0 a8000002146db590
a8000002146da000
$20 : a8000002146db590 a800000214143800 0000000000000000
a8000002146db570
$24 : 0000000000000000 0000000000000030
$28 : a800000214140000 a8000002141437f0 000000003ecc057d
ffffffff837cbb48
Hi : 000000000000000a
Lo : 0000000000000000
epc : ffffffff837d8224 [S 1_STF]01/02/2 Tainted: P
00|01:15:30[stf_ra : ffffffff837cbb48 sctp_recv.c|156|Status:
1000dce3
<7>sctp_generate_timeout_event:Sock is busy: timer 8
stf_process_sctpsctp_do_sm prefn: ep a80000021fd7fde0, EVENT_T_TIMEOUT,
TIMEOUT_SACK, asoc a800000213e60000[STATE_ESTABLISHED],
sctp_sf_do_6_2_sack
sctp_do_sm postfn: asoc a800000213e60000, status: DISPOSITION_CONSUME
_data]:Received sackCTSNAck sent: 0x98453e51.
sctp_outq_tail(a800000213e61570, a8000002140655a0[SACK])
sctp_packet_config: packet:a80000021c31d350 vtag:0x3fdecc1d
sctp_packet_transmit_chunk: packet:a80000021c31d350
chunk:a8000002140655a0
Packet from LKSCsctp_packet_append_chunk: packet:a80000021c31d350
chunk:a8000002140655a0
sctp_packet_transmit: packet:a80000021c31d350
***sctp_transmit_packet***
TP
[S1_STF]01/0** Chunk a8000002140655a0[SACK] No TSN 0x0, length 16,
chunk->skb->len 16, rtt_in_progress 0
***sctp_transmit_packet*** skb len 28
sctp_v4_xmit: skb:a800000213df7a60, len:28, src:192.168.12.125,
dst:192.168.9.123
2/2000|01:15:30[sctp_do_sm post sfx: error 0, asoc
a800000213e60000[STATE_ESTABLISHED]
+++sctp_inq_pop+++ chunk a8000002140655a0[SHUTDOWN], length 8, skb->len
4
stf_sctp_server.sctp_do_sm prefn: ep a80000021fd7fde0, EVENT_T_CHUNK,
SHUTDOWN,
asoc a800000213e60000[STATE_ESTABLISHED], sctp_sf_do_9_2_shutdown
sctp_do_sm postfn: asoc a800000213e60000, status: DISPOSITION_CONSUME
c|1826|stf_dump_sm_sideff: event_up: a800000213df7980, ulpq:
a800000213e615d8.
sctp_cmd_new_state: asoc a800000213e60000[STATE_SHUTDOWN_RECEIVED]
packet]:Bytes[20sctp_cmd_new_state: asoc
a800000213e60000[STATE_SHUTDOWN_ACK_SENT]
sctp_outq_tail(a800000213e61570, a8000002140654a0[SHUTDOWN_ACK])
] received - sctp_mark_missing: transport: a80000021c31d200, cwnd:
4380,
ssthresh: 53760, flight_size: 0, pba: 0
sctp_outq_sack: sack Cumulative TSN Ack is 0x836b9bda.
80 01 00 00 00 0sctp_outq_sack: Cumulative TSN Ack of association,
a800000213e60000 is 0x836b9bda. Adv peer ack point: 0x836b9bda
sctp_packet_config: packet:a80000021c31d350 vtag:0x3fdecc1d
0 00 14 00 00 00sctp_packet_transmit_chunk: packet:a80000021c31d350
chunk:a8000002140654a0
sctp_packet_append_chunk: packet:a80000021c31d350 chunk:a8000002140654a0
00 00 02 00 02 sctp_packet_transmit: packet:a80000021c31d350
***sctp_transmit_packet***
00 00 00 01
[S1*** Chunk a8000002140654a0[SHUTDOWN_ACK] No TSN 0x0, length 4,
chunk->skb->len 4, rtt_in_progress 0
***sctp_transmit_packet*** skb len 16
sctp_v4_xmit: skb:a80000021425dd60, len:16, src:192.168.12.125,
dst:192.168.9.123
_STF]01/02/2000|sctp_do_sm post sfx: error 0, asoc
a800000213e60000[STATE_SHUTDOWN_ACK_SENT]
+++sctp_inq_pop+++ chunk a8000002140655a0[SHUTDOWN_COMPLETE], length 4,
skb->len
0
01:15:30[stf_sctsctp_do_sm prefn: ep a80000021fd7fde0, EVENT_T_CHUNK,
SHUTDOWN_COMPLETE, asoc a800000213e60000[STATE_SHUTDOWN_ACK_SENT],
sctp_sf_do_4_C
sctp_do_sm postfn: asoc a800000213e60000, status: DISPOSITION_DELETE_TCB
p_recv.c|167|stfsm_sideff: event_up: a800000213df7ac0, ulpq:
a800000213e615d8.
sctp_cmd_new_state: asoc a800000213e60000[STATE_CLOSED]
_process_sctp_dasctp_packet_free: packet:a80000021c31d350
sctp_do_sm post sfx: error 0, asoc a800000213e60000[STATE_CLOSED]
ta]:received msgsctp_do_sm prefn: ep a80000021fd7fee0, EVENT_T_TIMEOUT,
TIMEOUT_SACK, asoc a800000214736000[STATE_ESTABLISHED],
sctp_sf_do_6_2_sack
sctp_do_sm postfn: asoc a800000214736000, status: DISPOSITION_CONSUME
assoc:(0),strm(sackCTSNAck sent: 0xccffb480.
sctp_outq_tail(a800000214737570, a8000002140655a0[SACK])
sctp_packet_config: packet:a80000021c31df50 vtag:0x2fabe1ec
sctp_packet_transmit_chunk: packet:a80000021c31df50
chunk:a8000002140655a0
0),enbAddr( 192sctp_packet_append_chunk: packet:a80000021c31df50
chunk:a8000002140655a0
sctp_packet_transmit: packet:a80000021c31df50
***sctp_transmit_packet***
.168.9.123:23451** Chunk a8000002140655a0[SACK] No TSN 0x0, length 16,
chunk->skb->len 16, rtt_in_progress 0
***sctp_transmit_packet*** skb len 28
sctp_v4_xmit: skb:a80000021425dd60, len:28, src:192.168.12.125,
dst:192.168.9.123
2/
root@router:~/server/# +++sctp_inq_pop+++ chunk a80000021aaeade0[INIT],
length 44, skb->len 40
sctp_do_sm prefn: ep a80000021c3e30c0, EVENT_T_CHUNK, INIT, asoc
0000000000000000[STATE_CLOSED], sctp_sf_do_5_1B_init
Created asoc a80000021a8d6000
sctp_assoc_add_peer:association a80000021a8d6000 addr: 192.168.9.199
port: 42356 state:1
sctp_v4_get_dst: DST:192.168.9.199, SRC:0.0.0.0 -
<7>rt_dst:192.168.9.199, rt_src:192.168.12.102
sctp_assoc_add_peer:association a80000021a8d6000 PMTU set to 1500
sctp_packet_init: packet:a80000021bc25150 transport:a80000021bc25000
sctp_do_sm postfn: asoc 0000000000000000, status: DISPOSITION_DELETE_TCB
sctp_outq_tail(a80000021a8d7570, a80000021aaeace0[INIT_ACK])
sctp_packet_config: packet:a80000021bc25150 vtag:0x563d2e8
sctp_packet_init: packet:ffffffff838738a0 transport:a80000021bc25000
sctp_packet_config: packet:ffffffff838738a0 vtag:0x563d2e8
sctp_packet_append_chunk: packet:ffffffff838738a0 chunk:a80000021aaeace0
sctp_packet_transmit: packet:ffffffff838738a0
sctp_v4_get_dst: DST:192.168.9.199, SRC:0.0.0.0 -
<7>rt_dst:192.168.9.199, rt_src:192.168.12.125
sctp_assoc_sync_pmtu: asoc:a80000021a8d6000, pmtu:1500, frag_point:1452
***sctp_transmit_packet***
*** Chunk a80000021aaeace0[INIT_ACK] No TSN 0x0, length 252,
chunk->skb->len 252, rtt_in_progress 0
***sctp_transmit_packet*** skb len 264
sctp_v4_xmit: skb:a80000021abed220, len:264, src:192.168.12.125,
dst:192.168.9.199
sctp_packet_free: packet:a80000021bc25150
sctp_do_sm post sfx: error 0, asoc 0000000000000000[STATE_CLOSED]
+++sctp_inq_pop+++ chunk a80000021aaeade0[COOKIE_ECHO], length 200,
skb->len 196
sctp_do_sm prefn: ep a80000021c3e30c0, EVENT_T_CHUNK, COOKIE_ECHO, asoc
0000000000000000[STATE_CLOSED], sctp_sf_do_5_1D_ce
Created asoc a80000021a8d6000
sctp_assoc_add_peer:association a80000021a8d6000 addr: 192.168.9.199
port: 42356 state:1
sctp_v4_get_dst: DST:192.168.9.199, SRC:0.0.0.0 -
<7>rt_dst:192.168.9.199, rt_src:192.168.12.102
sctp_assoc_add_peer:association a80000021a8d6000 PMTU set to 1500
sctp_packet_init: packet:a80000021bc25150 transport:a80000021bc25000
sctp_do_sm postfn: asoc 0000000000000000, status: DISPOSITION_CONSUME
sctp_cmd_new_state: asoc a80000021a8d6000[STATE_ESTABLISHED]
sctp_outq_tail(a80000021a8d7570, a80000021aaeace0[COOKIE_ACK])
sm_sideff: event_up: a80000021a56fda0, ulpq: a80000021a8d75d8.
sctp_packet_config: packet:a80000021bc25150 vtag:0x563d2e8
sctp_packet_transmit_chunk: packet:a80000021bc25150
chunk:a80000021aaeace0
sctp_packet_append_chunk: packet:a80000021bc25150 chunk:a80000021aaeace0
sctp_packet_transmit: packet:a80000021bc25150
sctp_v4_get_dst: DST:192.168.9.199, SRC:0.0.0.0 -
<7>rt_dst:192.168.9.199, rt_src:192.168.12.125
sctp_assoc_sync_pmtu: asoc:a80000021a8d6000, pmtu:1500, frag_point:1452
***sctp_transmit_packet***
|