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<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
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Hello,<br>
<br>
the patch is adding a lock to protect against races executing the
acc callback -- acc was parsing the header pointing to private
memory, but linking it in the shared memory structure. Now it is
cleaned up and such cases don't overlap anymore.<br>
<br>
Hope is clear enough. That could have been the cause for the other
crash, as the pointer might have been invalidated by the raced
execution.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 17/07/14 17:18, Igor Potjevlesch
wrote:<br>
</div>
<blockquote
cite="mid:CAJmJ=jH0NK_vkhQ=9szs_OZZgLGtLKnbp-fQ40xBVWefvXFzdA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>I don't understand the patch you sent me. Is it for the PAI
problem?</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Igor</div>
</div>
<div class="gmail_extra">
<br>
<br>
<div class="gmail_quote">2014-07-07 12:40 GMT+02:00 Igor
Potjevlesch <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:igor.potjevlesch@gmail.com" target="_blank">igor.potjevlesch@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>Can you explain the modification and the impact on
our plateform?</div>
<div>Is it for the pai problem?</div>
<div><br>
</div>
<div>Do you have explanation for the km_val.c problem wich
cause crash for Kamailio too?</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Igor</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2014-07-01 16:40 GMT+02:00
Daniel-Constantin Mierla <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>:
<div>
<div class="h5"><br>
<blockquote class="gmail_quote" style="margin:0px
0px 0px
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
<div bgcolor="#FFFFFF" text="#000000"> Hello,<br>
<br>
can you give it a try with the patch from next
commit?<br>
<br>
-
<a moz-do-not-send="true"
href="http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=da9d56be28e050dd0cb4aed50efcbda043a3e5cf"
target="_blank">http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=da9d56be28e050dd0cb4aed50efcbda043a3e5cf</a><br>
<br>
If all goes fine while testing, I will backport.<br>
<br>
Cheers,<br>
Daniel
<div>
<div><br>
<br>
<div>On 26/06/14 12:58, Igor Potjevlesch
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>Here the result :</div>
<div><br>
</div>
<div>(gdb) frame 6
<div><br>
#6 0x00007f127cb6dde6 in
acc_onreply (t=0x7f1274c157f0,
req=0x7f1274c3ac08, <br>
reply=0x7f12804a6d70,
code=200) at acc_logic.c:501<br>
</div>
501
clean_hdr_field(hdr);<br>
(gdb) print hdr<br>
$1 = (hdr_field_t *) 0x7f1274c3c238<br>
(gdb) print *hdr<br>
$2 = {type = HDR_PAI_T, name = {<br>
s = 0x7f1274c3b6cd
"P-Asserted-Identity: <a
moz-do-not-send="true"><sip:0123456789@domain;user=phone></a>\r\nP-Sig-Options:
Sending-Complete\r\n\r\nv=0\r\no=-
111851 1 IN IP4
A.B.C.D\r\ns=-\r\nt=0 0\r\nm=audio
21336 RTP/AVP 8 101 13\r\nc=IN IP4
A.B.C"..., len = 19}, body = {<br>
s = 0x7f1274c3b6e2 "<a
moz-do-not-send="true"><sip:0123456789@domain;user=phone></a>\r\nP-Sig-Options:
Sending-Complete\r\n\r\nv=0\r\no=-
111851 1 IN IP4
A.B.C.D\r\ns=-\r\nt=0 0\r\nm=audio
21336 RTP/AVP 8 101 13\r\nc=IN IP4
A.B.C.D\r\na=rtpmap:101 tele"...,
len = 44}, len = 67, parsed = 0x0,
next = 0x7f1274c3c278}</div>
<div><br>
</div>
<div>(gdb) frame 4
<div><br>
#4 0x000000000056e5e6 in
free_pai_ppi_body
(pid_b=0x7f12803cb480)<br>
at parser/parse_ppi_pai.c:102<br>
</div>
102
pkg_free(pid_b);<br>
(gdb) print *pid_b<br>
$3 = {id = 0x0, num_ids = 0, next =
0x1d0}</div>
<div><br>
</div>
<div>This is the bt full :
<div><br>
<br>
#0 0x0000003d6f6328a5 in raise ()
from /lib64/libc.so.6<br>
No symbol table info available.<br>
#1 0x0000003d6f634085 in abort ()
from /lib64/libc.so.6<br>
No symbol table info available.<br>
#2 0x0000000000546d3c in
qm_debug_frag (qm=0x7f1280275010,
f=0x7f12803cb450) at
mem/q_malloc.c:142<br>
</div>
__FUNCTION__ =
"qm_debug_frag"
<div><br>
#3 0x0000000000548b26 in qm_free
(qm=0x7f1280275010,
p=0x7f12803cb480, file=0x6276a0
"<core>:
parser/parse_ppi_pai.c",
func=0x627a00 "free_pai_ppi_body",
line=102) at mem/q_malloc.c:464<br>
</div>
f = 0x7f12803cb450<br>
size = 139717434027144<br>
next = 0xf00000000<br>
prev = 0x7f127cd79e00<br>
__FUNCTION__ = "qm_free"
<div><br>
#4 0x000000000056e5e6 in
free_pai_ppi_body
(pid_b=0x7f12803cb480) at
parser/parse_ppi_pai.c:102<br>
</div>
__FUNCTION__ =
"free_pai_ppi_body"
<div><br>
#5 0x000000000054fee0 in
clean_hdr_field
(hf=0x7f1274c3c238) at
parser/hf.c:126<br>
</div>
h_parsed = 0x7f1274c3c268<br>
__FUNCTION__ =
"clean_hdr_field"
<div> <br>
#6 0x00007f127cb6dde6 in
acc_onreply (t=0x7f1274c157f0,
req=0x7f1274c3ac08,
reply=0x7f12804a6d70, code=200) at
acc_logic.c:501<br>
</div>
new_uri_bk = {s =
0x7f1274b53cdf "<a
moz-do-not-send="true">sip:0987654321@GW</a>
SIP/2.0\r\nRecord-Route: <a
moz-do-not-send="true"><sip:A.B.C.D;lr=on></a>\r\nVia:
SIP/2.0/UDP
A.B.C.D;branch=z9hG4bK512b.82b197888826f6b60c0c63b79801294d.0\r\nVia:
SIP/2.0/UDP
A.B.C.D:2057;branch=z9hG4bK-12"...,
len = 19}<br>
br = 0<br>
hdr = 0x7f1274c3c238<br>
__FUNCTION__ = "acc_onreply"
<div><br>
#7 0x00007f127cb6e30a in
tmcb_func (t=0x7f1274c157f0,
type=512, ps=0x7fff0b015580) at
acc_logic.c:573<br>
</div>
__FUNCTION__ = "tmcb_func"
<div><br>
#8 0x00007f127ed68478 in
run_trans_callbacks_internal
(cb_lst=0x7f1274c15860, type=512,
trans=0x7f1274c157f0,
params=0x7fff0b015580) at
t_hooks.c:290<br>
</div>
cbp = 0x7f1274ac0e90<br>
backup_from = 0x934630<br>
backup_to = 0x934638<br>
backup_dom_from = 0x934640<br>
backup_dom_to = 0x934648<br>
backup_uri_from = 0x934620<br>
backup_uri_to = 0x934628<br>
backup_xavps = 0x934760<br>
__FUNCTION__ =
"run_trans_callbacks_internal"
<div><br>
#9 0x00007f127ed6868a in
run_trans_callbacks_with_buf
(type=512, rbuf=0x7f1274c158b0,
req=0x7f1274c3ac08,
repl=0x7f12804a6d70, flags=200) at
t_hooks.c:336<br>
</div>
params = {req =
0x7f1274c3ac08, rpl =
0x7f12804a6d70, param =
0x7f1274ac0ea0, code = 200, flags =
200, branch = 0, t_rbuf =
0x7f1274c158b0, dst =
0x7f1274c15900, send_buf = {<br>
s = 0x7f1274c27620
"SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP
A.B.C.D:2057;branch=z9hG4bK-129F259C;rport=2057\r\nCall-ID:
<a moz-do-not-send="true"
href="mailto:cb03dc02e909d3118f86009033290024@A.B.C.D%5Cr%5CnFrom"
target="_blank">cb03dc02e909d3118f86009033290024@A.B.C.D\r\nFrom</a>:
<a moz-do-not-send="true"><sip:0123456789@domain;user=phone></a>;epid=00903"...,
len = 1021}}<br>
trans = 0x7f1274c157f0
<div><br>
#10 0x00007f127ed9ac06 in
relay_reply (t=0x7f1274c157f0,
p_msg=0x7f12804a6d70, branch=0,
msg_status=200,
cancel_data=0x7fff0b0158e0,
do_put_on_wait=1) at
t_reply.c:2001<br>
</div>
relay = 0<br>
save_clone = 0<br>
buf = 0x7f12804a7cc0
"SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP
A.B.C.D:2057;branch=z9hG4bK-129F259C;rport=2057\r\nCall-ID:
<a moz-do-not-send="true"
href="mailto:cb03dc02e909d3118f86009033290024@A.B.C.D%5Cr%5CnFrom"
target="_blank">cb03dc02e909d3118f86009033290024@A.B.C.D\r\nFrom</a>:
<a moz-do-not-send="true"><sip:0123456789@domain;user=phone></a>;epid=00903"...<br>
res_len = 1021<br>
relayed_code = 200<br>
relayed_msg = 0x7f12804a6d70<br>
reply_bak = 0x7fff0b015730<br>
bm = {to_tag_val = {s =
0x7f1274c16d88 "", len = 5449343}}<br>
totag_retr = 0<br>
reply_status = RPS_COMPLETED<br>
uas_rb = 0x7f1274c158b0<br>
to_tag = 0x0<br>
reason = {s = 0x10b0156e0
<Address 0x10b0156e0 out of
bounds>, len = 1}<br>
onsend_params = {req =
0x200924a64, rpl = 0x7f127edbaf90,
param = 0x414cc0, code = 1, flags =
0, branch = 0, t_rbuf =
0x7f126a80c828, dst =
0x7f12804a6f68, send_buf = {s =
0xb015700 <Address 0xb015700 out
of bounds>, len = 1024}}<br>
__FUNCTION__ = "relay_reply"
<div><br>
#11 0x00007f127ed9d0b7 in
reply_received
(p_msg=0x7f12804a6d70) at
t_reply.c:2499<br>
</div>
msg_status = 200<br>
last_uac_status = 183<br>
ack = 0x40 <Address 0x40
out of bounds><br>
ack_len = 0<br>
branch = 0<br>
reply_status = -<a
moz-do-not-send="true"
href="tel:2143420688"
target="_blank"
value="+12143420688">2143420688</a><br>
onreply_route = 1<br>
cancel_data = {cancel_bitmap
= 0, reason = {cause = 200, u =
{text = {s = 0x0, len = 9586191},
e2e_cancel = 0x0, packed_hdrs = {s =
0x0, len = 9586191}}}}<br>
uac = 0x7f1274c15958<br>
t = 0x7f1274c157f0<br>
lack_dst = {send_sock =
0x7f12803e4110, to = {s = {sa_family
= 20496, sa_data =
"'\200\022\177\000\000\310\036#\000\000\000\000"},
sin = {sin_family = 20496, sin_port
= 32807, sin_addr = {s_addr =
32530}, sin_zero =
"\310\036#\000\000\000\000"}, sin6 =
{<br>
sin6_family = 20496,
sin6_port = 32807, sin6_flowinfo =
32530, sin6_addr = {__in6_u =
{__u6_addr8 =
"\310\036#\000\000\000\000\000\360\247=\200\022\177\000",
__u6_addr16 = {7880, 35, 0, 0,
42992, 32829, 32530, 0}, __u6_addr32
= {2301640, 0, 2151524336, <br>
32530}}},
sin6_scope_id = 2150060928}}, id =
32530, proto = 72 'H', send_flags =
{f = 228 '\344', blst_imask = 61
'='}}<br>
backup_user_from = 0x934630<br>
backup_user_to = 0x934638<br>
backup_domain_from =
0x934640<br>
backup_domain_to = 0x934648<br>
backup_uri_from = 0x934620<br>
backup_uri_to = 0x934628<br>
backup_xavps = 0x934760<br>
replies_locked = 1<br>
branch_ret = 0<br>
prev_branch = 184637856<br>
blst_503_timeout = 32767<br>
hf = 0x7f12804a6d90<br>
onsend_params = {req =
0x7fff0b015960, rpl = 0x550b94,
param = 0x231dc8, code = 0, flags =
3, branch = 0, t_rbuf =
0x7f1280275380, dst =
0x7f12803de418, send_buf = {s =
0x7fff0b015960 "`G\223", len =
5538037}}<br>
ctx = {rec_lev = 0,
run_flags = 0, last_retcode = 0,
jmp_env = {{__jmpbuf =
{139717438500712,
3644308075193502665, 4279488,
140733378027408, 0, 0,
3644308075281583049,
-3644194520509117495},
__mask_was_saved = 0, __saved_mask =
{__val = {9586395, <br>
1065161476041,
124554051613, 9586471,
139717437685488, 9587300, 9586197,
361695345073193192, 9586295,
9586274, 2151546560,
139717437685488, 139717437615640,
139717438500712, 4279488,
140733378027408}}}}}<br>
__FUNCTION__ =
"reply_received"
<div><br>
#12 0x000000000045d837 in
do_forward_reply
(msg=0x7f12804a6d70, mode=0) at
forward.c:777<br>
</div>
new_buf = 0x0<br>
dst = {send_sock = 0x0, to =
{s = {sa_family = 0, sa_data =
'\000' <repeats 13 times>},
sin = {sin_family = 0, sin_port = 0,
sin_addr = {s_addr = 0}, sin_zero =
"\000\000\000\000\000\000\000"},
sin6 = {sin6_family = 0, sin6_port =
0, sin6_flowinfo = 0, <br>
sin6_addr = {__in6_u =
{__u6_addr8 = '\000' <repeats 15
times>, __u6_addr16 = {0, 0, 0,
0, 0, 0, 0, 0}, __u6_addr32 = {0, 0,
0, 0}}}, sin6_scope_id = 0}}, id =
0, proto = 0 '\000', send_flags = {f
= 0 '\000', blst_imask = 0 '\000'}}<br>
new_len = 32530<br>
r = 1<br>
s = 0x464804a6d78
<Address 0x464804a6d78 out of
bounds><br>
len = 0<br>
__FUNCTION__ =
"do_forward_reply"
<div><br>
#13 0x000000000045e0f8 in
forward_reply (msg=0x7f12804a6d70)
at forward.c:860<br>
</div>
No locals.<br>
#14 0x00000000004a58e7 in
receive_msg (buf=0x924600 "SIP/2.0
200 OK\r\nVia: SIP/2.0/UDP
185.20.8.4;branch=z9hG4bK512b.82b197888826f6b60c0c63b79801294d.0;received=185.20.8.4\r\nVia:
SIP/2.0/UDP
10.143.1.2:2057;branch=z9hG4bK-129F259C;rport=2057\r\nCall-ID:
cb0"..., <br>
<div> len=1124,
rcv_info=0x7fff0b015c60) at
receive.c:273<br>
</div>
msg = 0x7f12804a6d70<br>
ctx = {rec_lev = 8868984,
run_flags = 0, last_retcode = 0,
jmp_env = {{__jmpbuf = {0, 0, 0,
263853236176, 1, 0, 169653785368,
9586112}, __mask_was_saved =
184638568, __saved_mask = {__val =
{139717436454816, 12884901899,
139717436454816, 4279488, <br>
140733378027408,
140733378026464, 5477954, 0,
139717072962944, 50195,
169290548608, 9586112,
140733378026592, 140733378026512,
5474789, 4279488}}}}}<br>
ret = 32530<br>
inb = {s = 0x924600 "SIP/2.0
200 OK\r\nVia: SIP/2.0/UDP
A.B.C.D;branch=z9hG4bK512b.82b197888826f6b60c0c63b79801294d.0;received=A.B.C.D\r\nVia:
SIP/2.0/UDP
A.B.C.D:2057;branch=z9hG4bK-129F259C;rport=2057\r\nCall-ID:
cb0"..., len = 1124}<br>
__FUNCTION__ = "receive_msg"
<div><br>
#15 0x000000000053c9a8 in
udp_rcv_loop () at
udp_server.c:536<br>
</div>
len = 1124<br>
buf = "SIP/2.0 200
OK\r\nVia: SIP/2.0/UDP
A.B.C.D;branch=z9hG4bK512b.82b197888826f6b60c0c63b79801294d.0;received=A.B.C.D\r\nVia:
SIP/2.0/UDP
A.B.C.D:2057;branch=z9hG4bK-129F259C;rport=2057\r\nCall-ID:
cb0"...<br>
tmp = 0x9245c0 "10.143.1.10"<br>
from = 0x7f12803e3f68<br>
fromlen = 16<br>
ri = {src_ip = {af = 2, len
= 4, u = {addrl = {403182777,
139717436454816}, addr32 =
{403182777, 0, 2150315936, 32530},
addr16 = {5305, 6152, 0, 0, 14240,
32811, 32530, 0}, addr =
"\271\024\b\030\000\000\000\000\240\067+\200\022\177\000"}},
dst_ip = {af = 2, <br>
len = 4, u = {addrl =
{67638457, 0}, addr32 = {67638457,
0, 0, 0}, addr16 = {5305, 1032, 0,
0, 0, 0, 0, 0}, addr =
"\271\024\b\004", '\000' <repeats
11 times>}}, src_port = 5060,
dst_port = 5060, proto_reserved1 =
0, proto_reserved2 = 0, src_su = {s
= {<br>
sa_family = 2, sa_data
=
"\023Ĺ\024\b\030\000\000\000\000\000\000\000"},
sin = {sin_family = 2, sin_port =
50195, sin_addr = {s_addr =
403182777}, sin_zero =
"\000\000\000\000\000\000\000"},
sin6 = {sin6_family = 2, sin6_port =
50195, <br>
sin6_flowinfo =
403182777, sin6_addr = {__in6_u =
{__u6_addr8 = '\000' <repeats 15
times>, __u6_addr16 = {0, 0, 0,
0, 0, 0, 0, 0}, __u6_addr32 = {0, 0,
0, 0}}}, sin6_scope_id = 0}},
bind_address = 0x7f12802b3638, proto
= 1 '\001'}<br>
__FUNCTION__ =
"udp_rcv_loop"
<div><br>
#16 0x000000000046d42b in
main_loop () at main.c:1617<br>
</div>
i = 1<br>
pid = 0<br>
si = 0x7f12802b3638<br>
si_desc = "udp receiver
child=1
sock=A.B.C.D:5060\000D\200\022\177\000\000\000\206\063\200\022\177\000\000.\205^\000\000\000\000\000\020w^\000\000\000\000\000\275\005r/\000\000\000\000\300LA\000\000\000\000\000\220_\001\v\377\177",
'\000' <repeats 18
times>"\320,
]\001\v\377\177\000\000\364\244K\000\000\000\000"<br>
nrprocs = 15<br>
__FUNCTION__ = "main_loop"
<div><br>
#17 0x0000000000470533 in main
(argc=7, argv=0x7fff0b015f98) at
main.c:2545<br>
</div>
cfg_stream = 0xe20010<br>
c = -1<br>
r = 0<br>
tmp = 0x7fff0b017f70 ""<br>
tmp_len = 0<br>
port = 0<br>
proto = 0<br>
options = 0x5e0a68
":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:"<br>
ret = -1<br>
seed = 1972285608<br>
rfd = 4<br>
debug_save = 0<br>
debug_flag = 0<br>
dont_fork_cnt = 0<br>
n_lst = 0x3d6f60fb88<br>
p = 0x5cab80
"H\211l$\330L\211d$\340H\215-o\244*"<br>
__FUNCTION__ = "main"<br>
</div>
<div><br>
</div>
<div>In a next mail you will find a
new bt full of Kamailio 's crash but
about km_val.c : db_mysql_val2str</div>
<div><br>
</div>
</div>
<div class="gmail_extra"> <br>
<br>
<div class="gmail_quote">2014-06-25
18:26 GMT+02:00 Daniel-Constantin
Mierla <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:miconda@gmail.com"
target="_blank">miconda@gmail.com</a>></span>:</div>
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<div class="gmail_extra"> <br>
<br>
<div class="gmail_quote">2014-06-25
18:26 GMT+02:00 Daniel-Constantin
Mierla <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:miconda@gmail.com"
target="_blank">miconda@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
Hello,<br>
<br>
can you give the output of:<br>
<br>
frame 6<br>
print hdr<br>
print *hdr<br>
<br>
frame 4<br>
print *pid_b<br>
<br>
Also, it would be good to have full
trace for other details:<br>
<br>
bt full<br>
<br>
Cheers,<br>
Daniel
<div><br>
<br>
On 25/06/14 14:49, Igor
Potjevlesch wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">Hello,<br>
<br>
<div> We updated this morning
Kamailio in 4.1.4 with your
patch.<br>
</div>
[...]<br>
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<div> <br>
-- <br>
Daniel-Constantin Mierla - <a
moz-do-not-send="true"
href="http://www.asipto.com"
target="_blank">http://www.asipto.com</a><br>
<a moz-do-not-send="true"
href="http://twitter.com/#%21/miconda"
target="_blank">http://twitter.com/#!/miconda</a>
- <a moz-do-not-send="true"
href="http://www.linkedin.com/in/miconda"
target="_blank">http://www.linkedin.com/in/miconda</a><br>
<br>
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<pre cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a moz-do-not-send="true" href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a></pre>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a></pre>
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