prefetch resource leak
-----------------------
Key: TS-1063
URL: https://issues.apache.org/jira/browse/TS-1063
Project: Traffic Server
Issue Type: Bug
Components: HTTP
Affects Versions: 3.0.2
Environment: linux（ubuntu）
Reporter: yunfei chen
configuration：
records.config
CONFIG proxy.config.prefetch.prefetch_enabled INT 1
CONFIG proxy.config.prefetch.default_url_proto STRING udp
CONFIG proxy.config.prefetch.default_data_proto STRING udp
prefetch.config
prefetch child
[Dec 26 10:07:44.129] Server {2964810608} WARNING: too many connections,
throttling
[Dec 26 10:17:44.176] Server {2964810608} WARNING: too many connections,
throttling
FATAL: ink_memalign: couldn't allocate 524288 bytes at alignment 4096 -
insufficient memory
/usr/local/bin/traffic_server - STACK TRACE:
FATAL: ink_memalign: couldn't allocate 524288 bytes at alignment 4096 -
insufficient memory
FATAL: ink_memalign: couldn't allocate 524288 bytes at alignment 4096 -
insufficient memory
/usr/local/bin/traffic_server - STACK TRACE:
/usr/local/bin/traffic_server - STACK TRACE:
FATAL: ink_memalign: couldn't allocate 524288 bytes at alignment 4096 -
insufficient memory
/usr/local/bin/traffic_server - STACK TRACE:
FATAL: ink_memalign: couldn't allocate 524288 bytes at alignment 4096 -
insufficient memory
/usr/local/bin/traffic_server - STACK TRACE:
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
#0 0x0012e416 in __kernel_vsyscall ()
#1 0x005c9941 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2 0x005cce42 in abort () at abort.c:92
#3 0x00520055 in __gnu_cxx::__verbose_terminate_handler() () from
/usr/lib/libstdc++.so.6
#4 0x0051df35 in ?? () from /usr/lib/libstdc++.so.6
#5 0x0051df72 in std::terminate() () from /usr/lib/libstdc++.so.6
#6 0x0051e0e1 in __cxa_throw () from /usr/lib/libstdc++.so.6
#7 0x0051e677 in operator new(unsigned int) () from /usr/lib/libstdc++.so.6
#8 0x0051e74d in operator new[](unsigned int) () from /usr/lib/libstdc++.so.6
#9 0x081488fd in DynArray<char>::resize (this=0x748ff4c, new_size=64) at
../lib/ts/DynArray.h:174
#10 0x0815d5da in DynArray<char>::operator() (this=0x748ff4c, idx=0) at
../lib/ts/DynArray.h:122
#11 0x0815a9bb in HtmlParser::ScanHtmlForURL (this=0x748ff3c, r=0xbabb3ac0,
url=0xb70921ec, url_end=0xb70921e8) at Update.cc:1874
#12 0x0815a86a in HtmlParser::ParseHtml (this=0x748ff3c, r=0xbabb3ac0,
url=0xb70921ec, url_end=0xb70921e8) at Update.cc:1820
#13 0x08140816 in PrefetchTransform::parse_data (this=0x748fe88,
reader=0xbabb3ac0) at Prefetch.cc:543
#14 0x0813ffe8 in PrefetchTransform::handle_event (this=0x748fe88, event=1,
edata=0x5991b530) at Prefetch.cc:435
#15 0x08104ba5 in Continuation::handleEvent (this=0x748fe88, event=1,
data=0x5991b530)
at ../iocore/eventsystem/I_Continuation.h:146
#16 0x0830a9f5 in EThread::process_event (this=0xb7497008, e=0x5991b530,
calling_code=1) at UnixEThread.cc:140
#17 0x0830ac38 in EThread::execute (this=0xb7497008) at UnixEThread.cc:189
#18 0x0830900e in spawn_thread_internal (a=0x895df28) at Thread.cc:88
#19 0x00165cc9 in start_thread (arg=0xb7092b70) at pthread_create.c:304
#20 0x0066f69e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
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