View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0004270 | unreal | ircd | public | 2014-03-14 01:14 | 2014-03-14 01:14 |
| Reporter | peterkingalexander | Assigned To | syzop | ||
| Priority | normal | Severity | crash | Reproducibility | have not tried |
| Status | resolved | Resolution | fixed | ||
| Product Version | 3.2.10.1 | ||||
| Fixed in Version | 3.2.10.3 | ||||
| Summary | 0004270: SASL crash (caused by remote server) | ||||
| Description | I was testing a custom SaslServ module on a small network, and somehow it crashed two servers out of three. (Interesting that it did not affect the ircd that services were linked to directly.) All three were running Unreal 3.2.10. | ||||
| Additional Information | Network layout: radian.cluenet.org |-decay.nullroute.eu.org [crashed] |-virgule.cluenet.org [crashed] `-services.cluenet.org [origin] Backtrace: (gdb) bt full #0 0xb71d3c49 in ?? () No symbol table info available. #1 0xb71d3f18 in ?? () No symbol table info available. #2 0x0806fce5 in parse (cptr=0xd, buffer=0x988e2f4 ":SaslServ SY", bufend=0x988e336 "") at parse.c:451 h = <value optimized out> buf_len = 0 from = 0x9b8ab70 ch = <value optimized out> s = <value optimized out> i = <value optimized out> numeric = 0 paramcount = -1219653952 cmptr = 0x988e315 #3 0x0806efd3 in dopacket (cptr=0x988e210, buffer=0x810e7a0 ":SaslServ SY virgule.cluenet.org virgule.cluenet.org!13.28011 C + \r\ner navbox\003\061\064]]\003\064 \003\061\060 \003\060\062http://en.wikipedia.org/w/index.php?diff=557848190&oldid=557414500\003 \003\065*\003 \003\060\063Mikemor92\003 \003\065*\003 (+24) \003\061\060\003\003 # N/"..., length=1) at packet.c:138 ch1 = 0x0 ch2 = 0x810e7e3 "\ner navbox\003\061\064]]\003\064 \003\061\060 \003\060\062http://en.wikipedia.org/w/index.php?diff=557848190&oldid=557414500\003 \003\065*\003 \003\060\063Mikemor92\003 \003\065*\003 (+24) \003\061\060\003\003 # N/A # Outside of valid namespaces # Not reverted\r\nerror 16) using [[P"... acpt = <value optimized out> zipped = 0 #4 0x0805cc45 in read_packet (cptr=0x988e210, doread=28011) at s_bsd.c:1595 dolen = 0 length = -1219653952 done = <value optimized out> now = 1370102824 ---Type <return> to continue, or q <return> to quit--- #5 0x0805f36b in read_message (delay=1, listp=0x8191b20) at s_bsd.c:2142 cptr = 0x988e210 nfds = <value optimized out> pfd = <value optimized out> aresfds = {0 <repeats 16 times>} read_set = {__fds_bits = {0 <repeats 32 times>}} write_set = {__fds_bits = {0 <repeats 32 times>}} j = <value optimized out> k = <value optimized out> v = <value optimized out> delay2 = <value optimized out> res = 135313256 length = 1 fd = <value optimized out> i = 1 sockerr = <value optimized out> #6 0x0806a368 in main (argc=<value optimized out>, argv=0xbfbdaf24) at ircd.c:1867 uid = 25 euid = 26 gid = 1370102824 egid = 64 delay = 1 portarg = <value optimized out> corelim = {rlim_cur = 4294967295, rlim_max = 4294967295} nextfdlistcheck = 1370102826 | ||||
| Tags | No tags attached. | ||||
| 3rd party modules | |||||
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It should be noted that this happened after the following exchange: --> CAP REQ :sasl --> NICK test --> USER a a a a --> AUTHENTICATE GSSAPI <-- :decay.nullroute.eu.org NOTICE AUTH :*** Looking up your hostname... <-- :decay.nullroute.eu.org NOTICE AUTH :*** Found your hostname (cached) <-- :decay.nullroute.eu.org NOTICE AUTH :*** Checking ident... <-- :decay.nullroute.eu.org NOTICE AUTH :*** Received identd response <-- :decay.nullroute.eu.org CAP * ACK :sasl <-- PING :C786C282 <-- AUTHENTICATE + --> AUTHENTICATE + <-- AUTHENTICATE + --> AUTHENTICATE + <-- AUTHENTICATE + --> AUTHENTICATE + <-- AUTHENTICATE + --> AUTHENTICATE + ^C (my SASL client script mistakenly kept sending null replies) |
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I'll leave this to nenolod or someone else. But perhaps you could run './unreal backtrace' to get a better backtrace (due to dynamic module names). |
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=================== START HERE ====================== BACKTRACE: warning: Can't read pathname for load map: Input/output error. Failed to read a valid object file image from memory. Core was generated by `/cluenet/irc/unreal/ircd'. Program terminated with signal 11, Segmentation fault. #0 0xb71d3c49 in decode_puid (puid=0x988e315 "virgule.cluenet.org") at m_sasl.c:123 123 if (cookie && client->sasl_cookie != cookie) #0 0xb71d3c49 in decode_puid (puid=0x988e315 "virgule.cluenet.org") at m_sasl.c:123 #1 0xb71d3f18 in m_sasl (cptr=0x988e210, sptr=0x9b8ab70, parc=5, parv=0x817b660) at m_sasl.c:210 #2 0x0806fce5 in parse (cptr=0x988e210, buffer=0x988e2f4 ":SaslServ SY", bufend=0x988e336 "") at parse.c:451 #3 0x0806efd3 in dopacket (cptr=0x988e210, buffer=0x810e7a0 ":SaslServ SY virgule.cluenet.org virgule.cluenet.org!13.28011 C + \r\ner navbox\003\061\064]]\003\064 \003\061\060 \003\060\062http://en.wikipedia.org/w/index.php?diff=557848190&oldid=557414500\003 \003\065*\003 \003\060\063Mikemor92\003 \003\065*\003 (+24) \003\061\060\003\003 # N/"..., length=1) at packet.c:138 #4 0x0805cc45 in read_packet (cptr=0x988e210, doread=28011) at s_bsd.c:1595 #5 0x0805f36b in read_message (delay=1, listp=0x8191b20) at s_bsd.c:2142 #6 0x0806a368 in main (argc=<value optimized out>, argv=0xbfbdaf24) at ircd.c:1867 #0 0xb71d3c49 in decode_puid (puid=0x988e315 "virgule.cluenet.org") at m_sasl.c:123 123 if (cookie && client->sasl_cookie != cookie) 0x81971e0 <backupbuf>: ":SaslServ SY virgule.cluenet.org virgule.cluenet.org!13.28011 C + " #0 0xb71d3c49 in decode_puid (puid=0x988e315 "virgule.cluenet.org") at m_sasl.c:123 client = 0x0 it = <value optimized out> cookie = 28011 #1 0xb71d3f18 in m_sasl (cptr=0x988e210, sptr=0x9b8ab70, parc=5, parv=0x817b660) at m_sasl.c:210 target_p = <value optimized out> #2 0x0806fce5 in parse (cptr=0x988e210, buffer=0x988e2f4 ":SaslServ SY", bufend=0x988e336 "") at parse.c:451 h = <value optimized out> buf_len = 0 from = 0x9b8ab70 ch = <value optimized out> s = <value optimized out> i = <value optimized out> numeric = 0 paramcount = -1219653952 cmptr = 0x98a2f38 GCC: gcc version 4.4.5 (Debian 4.4.5-8) UNAME: Linux virgule.cluenet.org 3.8.4-linode50 #1 SMP Mon Mar 25 15:50:29 EDT 2013 i686 GNU/Linux UNREAL: Unreal3.2.10-rc1 build 3.2.10 CORE: -rw------- 1 cluenet-irc cluenet-irc 7438336 Jun 1 19:07 core =================== STOP HERE ====================== |
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Seems you were running Unreal 3.2.10-RC1. Does this same crash happen on 3.2.10.1? |
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I've added this fix http://hg.unrealircd.com/hg/unreal/rev/a3d24860fff3 but I did not / could not verify if this fixes your issue. It fixes this particular crash, but given the slightly crappy sasl code I suppose it can crash a number of lines later. |
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I'll mark it as resolved. If you still have crash issues, I'd appreciate it if you could re-open or create a new bug report. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2014-03-14 01:14 | peterkingalexander | New Issue | |
| 2014-03-14 01:14 | peterkingalexander | Issue generated from: 0004219 |
