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  • Reproducable: WorldSession::Update ByteBufferException occured

    • Status: Completed
      Main Category: Core / Mangos Daemon
      Sub-Category: Core Freeze
      Version: 0.20(currentmasterbranch) Milestone: 20-newbeginnings Priority: Urgent
      Implemented Version: 0.20(currentmasterbranch)

    Causing core freeze, lag also seen in-game

    2014-09-06 12:18:01 ERROR:WorldSession::Update ByteBufferException occured while parsing a packet (opcode: 231) from client, accountid=1.
    2014-09-06 12:18:01 CMSG_MOVE_WATER_WALK_ACK
    2014-09-06 12:18:06 ERROR:Attempted to get in ByteBuffer (pos: 48 size: 48) value with size: 4
    TargetedMovementGeneratorMedium >::unitSpeedChanged()+0x87c3 [0x0]
    Unit::ProcDamageAndSpellFor()+0x67a [0x0]
    WorldSession::HandleMoveWaterWalkAck()+0x53 [0x0]
    WorldSession::ExecuteOpcode()+0x38 [0x0]
    WorldSession::Update()+0x11c [0x0]
    Map::Update()+0xa9 [0x0]
    GetScriptName()+0x8709 [0x0]
    CreatureAI::SummonedMovementInform()+0x398 [0x0]
    BarGoLink::operator=()+0x4c1f [0x0]
    ACE_OS_Thread_Adapter::invoke()+0x7f [0x0]
    _get_flsindex()+0x6f [0x0]
    _get_flsindex()+0x53 [0x0]
    BaseThreadInitThunk()+0x12 [0x0]
    RtlInitializeExceptionChain()+0x63 [0x0]
    RtlInitializeExceptionChain()+0x36 [0x0]

    2014-09-06 12:18:06 ERROR:WorldSession::Update ByteBufferException occured while parsing a packet (opcode: 720) from client, accountid=1.
    2014-09-06 12:18:06 MSG_MOVE_TELEPORT_ACK
    2014-09-06 12:18:06 Guid: Player Madtaurdruid (Guid: 31)
    2014-09-06 12:18:06 Counter 0, time 12380
    2014-09-06 12:18:06 Sending SMSG_INIT_WORLD_STATES to Map:0, Zone: 12

    Steps to reproduce:
    [*]Login as horde druid (I tested repeatedly with a tauren druid)
    [*]Teleport to stormwind and jump in the canal next to the closed off stocks instance
    [*]Go into Aquatic Form
    [*]Swim past the guards standing on the steps just above the water line and they will agro
    [*]You die at this point

    When dieing there is a pause as the core freezes and spits out a lot of red text regarding the WorldSession::Update

    Screenshot of console error attached below.

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