View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002501 | unreal | ircd | public | 2005-04-26 16:40 | 2005-06-06 20:30 |
| Reporter | Monk | Assigned To | |||
| Priority | normal | Severity | crash | Reproducibility | random |
| Status | closed | Resolution | duplicate | ||
| OS | Unix | ||||
| Product Version | 3.2.3 | ||||
| Summary | 0002501: Segmentation Fault | ||||
| Description | Core Dump: This GDB was configured as "i586-suse-linux"... Core was generated by `/home/mindirc/lircd/lircd'. Program terminated with signal 11, Segmentation fault. Reading symbols from /lib/libcrypt.so.1...done. Loaded symbols for /lib/libcrypt.so.1 Reading symbols from /lib/libnsl.so.1...done. Loaded symbols for /lib/libnsl.so.1 Reading symbols from /lib/libz.so.1...done. Loaded symbols for /lib/libz.so.1 Reading symbols from /lib/libdl.so.2...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from tmp/2D546E75.commands.so...done. Loaded symbols for tmp/2D546E75.commands.so Reading symbols from tmp/B8DD08C6.cloak.so...done. Loaded symbols for tmp/B8DD08C6.cloak.so #0 0x08064d46 in find_cache_number (rptr=0x0, numb=0x825ad5c "Pf´sú\b") at res.c:1443 1443 for (i = 0; HE(cp)->h_addr_list[i]; i++) | ||||
| Steps To Reproduce | Sorry, no idea. No preceeding log messages. | ||||
| Tags | No tags attached. | ||||
| 3rd party modules | |||||
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These bugs are hard to trace, so I'm gonna flood you with some questions :P. 1. What precise OS are you on? (name + version) 2. Did you recently reconfigure/recompile unreal, like.. changing a config.h setting or running ./Config to enable/disable something? 3. How many clients were connected locally? 4. How many servers were connected locally? 5. Do you use any services? If so, which? 6. How long have you been running unrealircd without problems? Or did this happen anytime before? 7. If you have multiple servers, did they ever experience the same issue? Hm.. that's all I can think of for now. |
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Well, yesterday we had an crazy dns problem, then server was crashing.. Someone has removed 1 server from Round Robin and set this Server in Servername IN CNAME irc (to Round Robin Adress). After 10 Minutes some other Techadmin add this Server to Round Robin and deleted the CNAME irc. But .... CNAME irc is TTL 86400 and Round Robin irc is TTL 10. After this changes , Servers crashing all Day... Today, Servers running fine, because noone has change the dns config. Just my 3 Cents... Btw. Its not an SSL Problem , Server was running fine for WEEKS ! |
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Monk, you can help out by running the ircd with valgrind (www.valgrind.org, but perhaps your distro already has a nice package for it). Then run the ircd by executing the following command (taken from HERZ ;p): valgrind --error-limit=no --verbose --time-stamp=yes --log-file=unrealdebug.log src/ircd Whenever you crash, you can mail me the log (zipped?) to [email protected] Thanks :) |
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Sorry for the delay in answering your questions. The first crash was on a boy not owned by me so I'll have to get the details. Meanwhile I had two crashes on my box too. Answers to your questions: 1. OS: Debian 3.1 (Sarge) - all standard via apt, nothing self compiled sofar 2. Crash is from a fresh compile, nothing changed whatsoever after compiling 3. I guess about 700 4. Only connection was to a hub / the box is running a second unrealircd connected to the same hub 5. Anope service 1.7.8 6. Happens now irregularly but left the realm of "rarely" 7. Experiencing it on different server too Additional infos: a) Had a crash before but debug dump was empty. Recompiled after this experience from a clean source. Had prolly been empty because I compiled the second ircd from the same source files with slightly different settings b) The crash mentioned in a) did happen right after taking it out of DNS. c) Servers are compiled for 4096 users, but limited in the conf to 1k currently d) Servers are compiled with (of course using the ./Config script ;)): ./configure --with-showlistmodes --enable-ssl --enable-ziplinks --enable-prefixaq --with-listen=20 --with-dpath=/home/mindirc/lircd1 --with-spath=/home/mindirc/lircd1/lircd1 --with-nick-history=2000 --with-sendq=5000000 --with-bufferpool=18 --with-hostname=yxz --with-permissions=0600 --with-fd-setsize=4096 --enable-dynamic-linking e) Currently running the ircd under valgrind with the proposed settings f) The crash of the following debug dump was not the direct consequence of any DNS changes. #0 0x080670dd in find_cache_number (rptr=0x0, numb=0x87a7530 "Õ\232D3S\016") at res.c:1443 1443 for (i = 0; HE(cp)->h_addr_list[i]; i++) (gdb) bt full #0 0x080670dd in find_cache_number (rptr=0x0, numb=0x87a7530 "Õ\232D3S\016") at res.c:1443 cp = (aCache *) 0x84168a0 hashv = 83 i = 0 #1 0x08065ee8 in gethost_byaddr (addr=0x87a7530 "Õ\232D3S\016", lp=0xbffff580) at res.c:466 cp = (aCache *) 0x84168a0 #2 0x0806b23d in start_of_normal_client_handshake (acptr=0x87a71f0) at s_bsd.c:1353 lin = {next = 0x214, flags = 0, value = {cptr = 0x87a71f0, chptr = 0x87a71f0, aconf = 0x87a71f0, wptr = 0x87a71f0, whowas = 0x87a71f0, cp = 0x87a71f0 "\20005\b", ban = {banstr = 0x87a71f0 "\20005\b", who = 0x0, when = 0}}} #3 0x0806af28 in add_connection (cptr=0x819a938, fd=532) at s_bsd.c:1338 addr = {sin_family = 2, sin_port = 21262, sin_addr = {s_addr = 860134101}, sin_zero = "\000\000\000\000\000\000\000"} len = 16 acptr = (aClient *) 0x87a71f0 bconf = (ConfigItem_ban *) 0x0 i = 138504352 j = 0 #4 0x0806ba4b in read_message (delay=1, listp=0x8166880) at s_bsd.c:1872 s = 138504352 cptr = (aClient *) 0x819a938 nfds = 532 wait = {tv_sec = 0, tv_usec = 939000} read_set = {__fds_bits = {0 <repeats 128 times>}} write_set = {__fds_bits = {0 <repeats 128 times>}} j = 2 delay2 = 1 res = 0 length = 532 fd = 532 i = 138504352 sockerr = 138504352 #5 0x0806012e in main (argc=0, argv=0xbffffb34) at ircd.c:1564 oldtimeofday = 1116530825 uid = 0 euid = 0 delay = 1 corelim = {rlim_cur = 4294967295, rlim_max = 4294967295} nextfdlistcheck = 1116530820 HTH, Monk |
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Thanks for the additional info. Good to hear you are running w/valgrind now as well. |
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moving all find_cache_number crashes --> 0002499 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2005-04-26 16:40 | Monk | New Issue | |
| 2005-04-27 17:44 | syzop | Note Added: 0009834 | |
| 2005-04-28 16:26 | syzop | Relationship added | related to 0002505 |
| 2005-04-28 16:52 | HERZ | Note Added: 0009852 | |
| 2005-05-18 10:36 | syzop | Note Added: 0009959 | |
| 2005-05-18 10:37 | syzop | Relationship added | related to 0002499 |
| 2005-05-19 17:30 | Monk | Note Added: 0009961 | |
| 2005-05-19 18:21 | syzop | Note Added: 0009962 | |
| 2005-06-06 20:30 | syzop | Status | new => closed |
| 2005-06-06 20:30 | syzop | Note Added: 0010051 | |
| 2005-06-06 20:30 | syzop | Resolution | open => duplicate |
