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https://issues.apache.org/jira/browse/TS-1411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bryan Call reassigned TS-1411:
------------------------------
Assignee: Bryan Call (was: Yunkai Zhang)
> Seg fault when using %<cquuc>
> -----------------------------
>
> Key: TS-1411
> URL: https://issues.apache.org/jira/browse/TS-1411
> Project: Traffic Server
> Issue Type: Bug
> Components: Logging
> Affects Versions: 3.2.0
> Environment: RHEL 6.2 x86_64
> Reporter: David Carlin
> Assignee: Bryan Call
> Priority: Critical
> Labels: Crash
> Fix For: 5.0.0
>
> Attachments: Log rotation segaults.txt, TS-1411 backtraces.txt, cquuc
> segfault patch.txt
>
>
> I've been experiencing some segfaults during log rotation. The sequence of
> events is this.. log rotation occurs, then I get hundreds of dropping log
> buffer error msgs, then the segfault.
> This started occurring when I lengthened the default log format to include
> the unmapped URL and the user agent string:
> %<cqtq> %<ttms> %<chi> %<crc>/%<pssc> %<psql> %<cqhm> %<cquc> %<caun>
> %<phr>/%<pqsn> %<psct> %<xid> %<cquuc> \"%<{User-Agent}cqh>\"
> In terms of frequency, we have a number of boxes and I probably see one of
> these crashed per day since the above change. Logs are rotated every 2 hours.
> I've had other log related segfaults, reported in TS-1330 - these new ones
> seem to have a different cause.
> [Aug 14 21:07:20.002] Server {0x2ae3a8887700} STATUS: The rolled logfile,
> /home/y/logs/trafficserver/error.log_l30.ycs.a4e.yahoo.com.20120814.17h59m50s-20120814.20h00m00s.old,
> was auto-deleted; 3148252 bytes were reclaimed.
> [Aug 14 21:07:42.859] Server {0x2ae3a8887700} STATUS: The rolled logfile,
> /home/y/logs/trafficserver/squid.blog_l30.ycs.a4e.yahoo.com.20120814.18h00m00s-20120814.20h00m00s.old,
> was auto-deleted; 14735520048 bytes were reclaimed.
> [Aug 14 21:07:42.865] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.865] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.865] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.865] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.865] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [...]
> [Aug 14 21:07:42.876] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.876] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.876] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> [Aug 14 21:07:42.876] Server {0x2ae3a8887700} WARNING: Dropping log buffer,
> can't keep up.
> NOTE: Traffic Server received Sig 11: Segmentation fault
> /home/y/bin/traffic_server - STACK TRACE:
> /lib64/libpthread.so.0[0x383f00f500]
> /home/y/bin/traffic_server(LogAccess::marshal_mem(char*, char const*, int,
> int)+0x48)[0x58a118]
> /home/y/bin/traffic_server(LogAccessHttp::marshal_client_req_url_canon(char*)+0x20)[0x58c3f0]
> /home/y/bin/traffic_server(LogFieldList::marshal(LogAccess*,
> char*)+0x32)[0x59d5a2]
> /home/y/bin/traffic_server(LogObject::log(LogAccess*, char*)+0x399)[0x5a7ed9]
> /home/y/bin/traffic_server(Log::access(LogAccess*)+0x146)[0x58f506]
> /home/y/bin/traffic_server(HttpSM::update_stats()+0x630)[0x526c50]
> /home/y/bin/traffic_server(HttpSM::kill_this()+0x928)[0x52b548]
> /home/y/bin/traffic_server(HttpSM::main_handler(int, void*)+0x198)[0x52b868]
> /home/y/bin/traffic_server(HttpTunnel::main_handler(int,
> void*)+0xde)[0x56c3ee]
> /home/y/bin/traffic_server[0x673871]
> /home/y/bin/traffic_server(write_to_net_io(NetHandler*, UnixNetVConnection*,
> EThread*)+0x847)[0x6756e7]
> /home/y/bin/traffic_server(NetHandler::mainNetEvent(int,
> Event*)+0x286)[0x66e076]
> /home/y/bin/traffic_server(EThread::process_event(Event*, int)+0xb4)[0x696ce4]
> /home/y/bin/traffic_server(EThread::execute()+0x4c3)[0x697673]
> /home/y/bin/traffic_server[0x695cb2]
> /lib64/libpthread.so.0[0x383f007851]
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