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Posted to issues@trafficserver.apache.org by "Conan Wang (Updated) (JIRA)" <ji...@apache.org> on 2011/12/26 20:32:30 UTC
[jira] [Updated] (TS-1065) traffic_cop segment fault when enable
TRACE_LOG_COP
[ https://issues.apache.org/jira/browse/TS-1065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Conan Wang updated TS-1065:
---------------------------
Attachment: traffic_cop.diff
diff tested on mac os 10.7.2 and centos 5.4 64bit.
> traffic_cop segment fault when enable TRACE_LOG_COP
> ---------------------------------------------------
>
> Key: TS-1065
> URL: https://issues.apache.org/jira/browse/TS-1065
> Project: Traffic Server
> Issue Type: Bug
> Affects Versions: 3.1.1, 3.0.2
> Environment: mac os 10.7.2, centos 5.4 64bit
> Reporter: Conan Wang
> Priority: Minor
> Attachments: traffic_cop.diff
>
>
> When enable traffic_cop's debug log: #define TRACE_LOG_COP 1
> Some cop_log invocation will cause segment fault, because va_list object in cop_log is used twice between 'va_start' and 'va_end'.
> {code}
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
> 0x00007fff846b64f0 in strlen ()
> (gdb) bt
> #0 0x00007fff846b64f0 in strlen ()
> #1 0x00007fff846578c3 in __vfprintf ()
> #2 0x00007fff846a109b in vsprintf_l ()
> #3 0x0000000100001883 in cop_log (priority=5, format=0x1000072a8 "--- Cop Starting [Version: %s] ---\n") at TrafficCop.cc:172
> #4 0x0000000100002244 in check_lockfile () at TrafficCop.cc:1733
> #5 0x00000001000022c0 in init () at TrafficCop.cc:1894
> #6 0x0000000100006689 in main (argc=1, argv=0x7fff5fbffbb0) at TrafficCop.cc:1958
> {code}
> Reference:
> http://pubs.opengroup.org/onlinepubs/009695399/basedefs/stdarg.h.html
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