Sudheer Vinukonda created TS-3265:
-------------------------------------
Summary: core dump in
spdy_prepare_status_response_and_clean_request
Key: TS-3265
URL: https://issues.apache.org/jira/browse/TS-3265
Project: Traffic Server
Issue Type: Bug
Components: SPDY
Reporter: Sudheer Vinukonda
Noticed the below core dump in v5.2.0.
{code}
(gdb) bt
#0 0x0000000000638442 in std::vector<std::pair<std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, std::basic_string<char,
std::char_traits<char>, std::allocator<char> > >,
std::allocator<std::pair<std::basic_string<char, std::char_traits<char>,
std::allocator<char> >, std::basic_string<char, std::char_traits<char>,
std::allocator<char> > > > >::size (
this=0x38) at
/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_vector.h:533
#1 0x000000000063667e in spdy_prepare_status_response_and_clean_request
(sm=0x2ad800d4d730, stream_id=1, status=0x7b6b4d "500 Internal Server Error")
at SpdyCallbacks.cc:57
#2 0x000000000063373c in spdy_process_fetch (event=TS_EVENT_ERROR,
sm=0x2ad800d4d730, edata=0x2ad818105c50) at SpdyClientSession.cc:350
#3 0x0000000000633151 in SpdyClientSession::state_session_readwrite
(this=0x2ad800d4d730, event=3, edata=0x2ad818105c50) at SpdyClientSession.cc:253
#4 0x0000000000502eae in Continuation::handleEvent (this=0x2ad800d4d730,
event=3, data=0x2ad818105c50) at ../iocore/eventsystem/I_Continuation.h:146
#5 0x0000000000501116 in FetchSM::InvokePluginExt (this=0x2ad818105c50,
fetch_event=3) at FetchSM.cc:245
#6 0x0000000000501e59 in FetchSM::process_fetch_write (this=0x2ad818105c50,
event=3) at FetchSM.cc:495
#7 0x0000000000501f3e in FetchSM::fetch_handler (this=0x2ad818105c50, event=3,
edata=0x2ad86c90b960) at FetchSM.cc:511
#8 0x0000000000502eae in Continuation::handleEvent (this=0x2ad818105c50,
event=3, data=0x2ad86c90b960) at ../iocore/eventsystem/I_Continuation.h:146
#9 0x000000000053e9d5 in PluginVC::process_write_side (this=0x2ad86c90b810,
other_side_call=false) at PluginVC.cc:519
#10 0x000000000053dbcd in PluginVC::main_handler (this=0x2ad86c90b810, event=2,
data=0x2ad80802c690) at PluginVC.cc:210
#11 0x0000000000502eae in Continuation::handleEvent (this=0x2ad86c90b810,
event=2, data=0x2ad80802c690) at ../iocore/eventsystem/I_Continuation.h:146
#12 0x0000000000773136 in EThread::process_event (this=0x2ad6cc000010,
e=0x2ad80802c690, calling_code=2) at UnixEThread.cc:144
#13 0x0000000000773451 in EThread::execute (this=0x2ad6cc000010) at
UnixEThread.cc:223
#14 0x00000000007726f1 in spawn_thread_internal (a=0x161fd50) at Thread.cc:88
#15 0x00002ad6c6d30851 in start_thread () from /lib64/libpthread.so.0
#16 0x0000003296ee890d in clone () from /lib64/libc.so.6
{code}
Looking at the core in gdb, it seems the {{req}} object extracted from the
{{sm->req_map}} based on {{stream_id}} is null. However, the {{req}} object
itself seems valid from the caller {{spdy_process_fetch}} in frame#2.
{code}
(gdb) frame 1
#1 0x000000000063667e in spdy_prepare_status_response_and_clean_request
(sm=0x2ad800d4d730, stream_id=1, status=0x7b6b4d "500 Internal Server Error")
at SpdyCallbacks.cc:57
57 SpdyCallbacks.cc: No such file or directory.
in SpdyCallbacks.cc
(gdb) print req
$1 = (SpdyRequest *) 0x0
(gdb) up
#2 0x000000000063373c in spdy_process_fetch (event=TS_EVENT_ERROR,
sm=0x2ad800d4d730, edata=0x2ad818105c50) at SpdyClientSession.cc:350
350 SpdyClientSession.cc: No such file or directory.
in SpdyClientSession.cc
(gdb) print req
$2 = (SpdyRequest *) 0x2ad7c4e8be90
{code}
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