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https://issues.apache.org/jira/browse/TS-2883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14028039#comment-14028039
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Sudheer Vinukonda commented on TS-2883:
---------------------------------------
A couple of interesting things -
1. Find a lot of these error logs from the production hosts.
"[May 8 23:28:13.461] Server {0x2b1d88a09700} ERROR: req null in SpdSM::clear"
2. Wondering if some checking may need to be added in the below code to ensure
a req object is released from the req_map before storing a new req object.
{code}
case SPDYLAY_SYN_STREAM:
stream_id = frame->syn_stream.stream_id;
req = spdyRequestAllocator.alloc();
req->init(sm, stream_id);
req->append_nv(frame->syn_stream.nv);
sm->req_map[stream_id] = req;
spdy_process_syn_stream_frame(sm, req);
break;
{code}
So, adding the below debug code to test further.
if (sm->req_map[stream_id] != 0) {
SpdyRequest *dangling_req = sm->req_map[stream_id];
Error("spdy_on_ctrl_recv_callback - dangling req for sm_id %u, stream_id
%u, %u - url %s, %s - req time %lld, %lld",
sm->sm_id, stream_id, dangling_req->stream_id, req->url.c_str(),
dangling_req->url.c_str(),
req->start_time, dangling_req->start_time);
dangling_req->clear();
spdyRequestAllocator.free(dangling_req);
}
> core dump in TSFetchCreate()
> ----------------------------
>
> Key: TS-2883
> URL: https://issues.apache.org/jira/browse/TS-2883
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, SPDY
> Reporter: Sudheer Vinukonda
>
> {code}
> (gdb) bt
> #0 ink_freelist_new (f=0x2923050) at ink_queue.cc:202
> #1 0x00000000004c0cd2 in alloc (contp=0x2b86821e2120,
> method=TS_FETCH_METHOD_POST,
> url=0x2b865d64f228
> "https://aa-mg5.mail.yahoo.com/ws/mail/v2.0/jsonrpc?appid=YahooMailNeo&m=BatchExecute&wssid=nG7kmTWsJCD&action=compose_0_savedraft&actionCount=88&debugmid=2_0_0_3_126623_AMNwimIAAC82U5ZXLwAAAFWGrR8&deb";...,
> version=0x2b865da5ace8 "HTTP/1.1", client_addr=<value optimized out>,
> flags=<value optimized out>) at ../lib/ts/Allocator.h:117
> #2 TSFetchCreate (contp=0x2b86821e2120, method=TS_FETCH_METHOD_POST,
> url=0x2b865d64f228
> "https://aa-mg5.mail.yahoo.com/ws/mail/v2.0/jsonrpc?appid=YahooMailNeo&m=BatchExecute&wssid=nG7kmTWsJCD&action=compose_0_savedraft&actionCount=88&debugmid=2_0_0_3_126623_AMNwimIAAC82U5ZXLwAAAFWGrR8&deb";...,
> version=0x2b865da5ace8 "HTTP/1.1", client_addr=<value optimized out>,
> flags=<value optimized out>) at InkAPI.cc:7289
> #3 0x00000000005f117e in spdy_fetcher_launch (req=0x2b871c2fa900,
> method=TS_FETCH_METHOD_POST) at SpdyCallbacks.cc:187
> #4 0x00000000005f1faa in spdy_process_syn_stream_frame (session=<value
> optimized out>, type=<value optimized out>, frame=<value optimized out>,
> user_data=0x2b86821e2120)
> at SpdyCallbacks.cc:295
> #5 spdy_on_ctrl_recv_callback (session=<value optimized out>, type=<value
> optimized out>, frame=<value optimized out>, user_data=0x2b86821e2120) at
> SpdyCallbacks.cc:335
> #6 0x0000000000738050 in spdylay_session_on_syn_stream_received
> (session=0x2b865defce10, frame=0x2b858f987a20) at spdylay_session.c:1782
> #7 0x0000000000738d57 in spdylay_session_process_ctrl_frame
> (session=0x2b865defce10, in=0x2b858f987a90 "\200\003", inlen=<value optimized
> out>) at spdylay_session.c:2246
> #8 spdylay_session_mem_recv (session=0x2b865defce10, in=0x2b858f987a90
> "\200\003", inlen=<value optimized out>) at spdylay_session.c:2805
> #9 0x0000000000738f89 in spdylay_session_recv (session=0x2b865defce10) at
> spdylay_session.c:2828
> #10 0x00000000005ef17b in spdy_process_read (this=0x2b86821e2120, event=100,
> edata=<value optimized out>) at SpdyClientSession.cc:279
> #11 SpdyClientSession::state_session_readwrite (this=0x2b86821e2120,
> event=100, edata=<value optimized out>) at SpdyClientSession.cc:236
> #12 0x000000000070dbd7 in handleEvent (this=0x2b86fc1d2cf0, event=<value
> optimized out>) at ../../iocore/eventsystem/I_Continuation.h:146
> #13 read_signal_and_update (this=0x2b86fc1d2cf0, event=<value optimized out>)
> at UnixNetVConnection.cc:138
> #14 UnixNetVConnection::readSignalAndUpdate (this=0x2b86fc1d2cf0,
> event=<value optimized out>) at UnixNetVConnection.cc:914
> #15 0x00000000006fe66f in SSLNetVConnection::net_read_io
> (this=0x2b86fc1d2cf0, nh=0x2b858d46bbf0, lthread=0x2b858d468010) at
> SSLNetVConnection.cc:294
> #16 0x0000000000705a72 in NetHandler::mainNetEvent (this=0x2b858d46bbf0,
> event=<value optimized out>, e=<value optimized out>) at UnixNet.cc:399
> #17 0x00000000007323ef in handleEvent (this=0x2b858d468010, e=0x2a7db30,
> calling_code=5) at I_Continuation.h:146
> #18 EThread::process_event (this=0x2b858d468010, e=0x2a7db30, calling_code=5)
> at UnixEThread.cc:145
> #19 0x0000000000732d93 in EThread::execute (this=0x2b858d468010) at
> UnixEThread.cc:269
> #20 0x000000000073179a in spawn_thread_internal (a=0x2e404e0) at Thread.cc:88
> #21 0x00002b835bf28851 in start_thread () from /lib64/libpthread.so.0
> #22 0x000000361a0e894d in clone () from /lib64/libc.so.6
> {code}
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