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  1. Traffic Server
  2. TS-3958

HTTP/2 core dump with NULL FetchSM

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 6.0.1, 6.1.0
    • HTTP/2
    • None

    Description

      (gdb) bt
      #0  0x00000000005107b0 in FetchSM::ext_get_user_data (this=0x0) at FetchSM.cc:689
      #1  0x000000000064552e in Http2ConnectionState::send_data_frame (this=0x2b940b27ac30, fetch_sm=0x0) at Http2ConnectionState.cc:891
      #2  0x0000000000645250 in Http2ConnectionState::restart_streams (this=0x2b940b27ac30) at Http2ConnectionState.cc:845
      #3  0x000000000064437a in rcv_window_update_frame (cs=..., cstate=..., frame=...) at Http2ConnectionState.cc:539
      #4  0x0000000000644de5 in Http2ConnectionState::main_event_handler (this=0x2b940b27ac30, event=2253, edata=0x2b931ca087e0) at Http2ConnectionState.cc:733
      #5  0x0000000000510f78 in Continuation::handleEvent (this=0x2b940b27ac30, event=2253, data=0x2b931ca087e0) at ../iocore/eventsystem/I_Continuation.h:150
      #6  0x000000000063f655 in send_connection_event (cont=0x2b940b27ac30, event=2253, edata=0x2b931ca087e0) at Http2ClientSession.cc:59
      #7  0x00000000006415e7 in Http2ClientSession::state_complete_frame_read (this=0x2b940b27a9d0, event=100, edata=0x2b949c39b438) at Http2ClientSession.cc:398
      #8  0x00000000006403bd in Http2ClientSession::main_event_handler (this=0x2b940b27a9d0, event=100, edata=0x2b949c39b438) at Http2ClientSession.cc:222
      #9  0x0000000000510f78 in Continuation::handleEvent (this=0x2b940b27a9d0, event=100, data=0x2b949c39b438) at ../iocore/eventsystem/I_Continuation.h:150
      #10 0x000000000064132f in Http2ClientSession::state_start_frame_read (this=0x2b940b27a9d0, event=100, edata=0x2b949c39b438) at Http2ClientSession.cc:371
      #11 0x00000000006403bd in Http2ClientSession::main_event_handler (this=0x2b940b27a9d0, event=100, edata=0x2b949c39b438) at Http2ClientSession.cc:222
      #12 0x0000000000510f78 in Continuation::handleEvent (this=0x2b940b27a9d0, event=100, data=0x2b949c39b438) at ../iocore/eventsystem/I_Continuation.h:150
      #13 0x0000000000779f9e in read_signal_and_update (event=100, vc=0x2b949c39b320) at UnixNetVConnection.cc:148
      #14 0x000000000077ce08 in UnixNetVConnection::readSignalAndUpdate (this=0x2b949c39b320, event=100) at UnixNetVConnection.cc:1020
      #15 0x0000000000761b45 in SSLNetVConnection::net_read_io (this=0x2b949c39b320, nh=0x2b93165858f0, lthread=0x2b9316582010) at SSLNetVConnection.cc:587
      #16 0x0000000000773a72 in NetHandler::mainNetEvent (this=0x2b93165858f0, event=5, e=0x3053270) at UnixNet.cc:547
      #17 0x0000000000510f78 in Continuation::handleEvent (this=0x2b93165858f0, event=5, data=0x3053270) at ../iocore/eventsystem/I_Continuation.h:150
      #18 0x000000000079ae6a in EThread::process_event (this=0x2b9316582010, e=0x3053270, calling_code=5) at UnixEThread.cc:128
      #19 0x000000000079b374 in EThread::execute (this=0x2b9316582010) at UnixEThread.cc:252
      #20 0x000000000079a415 in spawn_thread_internal (a=0x2f209e0) at Thread.cc:85
      #21 0x00002b9313db39d1 in start_thread () from /lib64/libpthread.so.0
      #22 0x00000034884e88fd in clone () from /lib64/libc.so.6
      
      (gdb) frame 1
      #1  0x000000000064552e in Http2ConnectionState::send_data_frame (this=0x2b940b27ac30, fetch_sm=0x0) at Http2ConnectionState.cc:891
      891	in Http2ConnectionState.cc
      (gdb) p fetch_sm
      $24 = (FetchSM *) 0x0
      
      (gdb) frame 2
      #2  0x0000000000645250 in Http2ConnectionState::restart_streams (this=0x2b940b27ac30) at Http2ConnectionState.cc:845
      845	in Http2ConnectionState.cc
      (gdb) p *this
      $21 = {<Continuation> = {<force_VFPT_to_top> = {_vptr.force_VFPT_to_top = 0x7ddbf0}, handler = (int (Continuation::*)(Continuation *, int,
          void *)) 0x644ac6 <Http2ConnectionState::main_event_handler(int, void*)>, mutex = {m_ptr = 0x2b94042f0d50}, link = {<SLink<Continuation>> = {next = 0x0},
            prev = 0x0}, debug_override = false}, ua_session = 0x2b940b27a9d0, local_dynamic_table = 0x2b940f50cda0, remote_dynamic_table = 0x2b940c780fc0,
        server_settings = {settings = {4096, 0, 100, 1048576, 16384, 4294967295}}, client_settings = {settings = {4096, 0, 100, 65535, 16384, 4294967295}},
        client_rwnd = 11398558, server_rwnd = 1048576, stream_list = {head = 0x2b940f473fd0}, latest_streamid = 77, client_streams_count = 28, continued_stream_id = 0,
        continued_buffer = {iov_base = 0x0, iov_len = 0}}
      (gdb) p s
      $22 = (Http2Stream *) 0x2b940cd46a20
      (gdb) p *s
      $23 = {client_rwnd = 65535, server_rwnd = 1048576, link = {<SLink<Http2Stream>> = {next = 0x2b940e1bb2c0}, prev = 0x2b940c0157b0},
        header_blocks = "XXX", header_blocks_length = 96,
        request_header_length = 96, end_stream = true, _start_time = 0, _thread = 0x2b9316582010, _id = 47, _state = HTTP2_STREAM_STATE_HALF_CLOSED_REMOTE,
        _req_header = {<MIMEHdr> = {<HdrHeapSDKHandle> = {m_heap = 0x2b9414aa1ed0}, m_mime = 0x2b9414aa1f88}, m_http = 0x2b9414aa1f58,
          m_url_cached = {<HdrHeapSDKHandle> = {m_heap = 0x0}, m_url_impl = 0x0}, m_host_mime = 0x4632256567616d69, m_host_length = 1734701162, m_port = 1684629030,
          m_target_cached = false, m_target_in_url = 83, m_port_in_header = 101, static USE_HDR_HEAP_MAGIC = 0x1}, _fetch_sm = 0x0, body_done = false, data_length = 0}
      

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                Created:
                Updated:
                Resolved: