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https://issues.apache.org/jira/browse/TS-2883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wei Sun updated TS-2883:
------------------------
Attachment: TS-2883_2.diff
For those who may encounter the same issue, we used the attached patch in
production for several months and haven't observed the crash so far. The theory
is that we observed the same trace by running a unit test to free FetchSM
multiple times in a multiple threads environment.
> 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
> Assignee: Bryan Call
> Labels: crash, yahoo
> Fix For: 5.3.0
>
> Attachments: TS-2883.diff, TS-2883_2.diff
>
>
> {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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