This often happen under high load.GNUGK 2.2.x
(gdb) bt#0 0x08705238 in P_fd_set::operator+=(int) (this=0xb41fda14, fd=9) at ../common/sockets.cxx:1317#1 0x0874436e in PThread::PXBlockOnIO(int, int, PTimeInterval const&) (this=0xa7c5c18, handle=43, type=0, timeout=@0x8b4d054) at tlibthrd.cxx:1343#2 0x08722083 in PChannel::PXSetIOBlock(PChannel::PXBlockType, PTimeInterval const&) ( this=0x8b4d018, type=PXReadBlock, timeout=@0x8b4d054) at channel.cxx:239#3 0x0870d1c2 in PSocket::os_recvfrom(void*, int, int, sockaddr*, int*) (this=0x8b4d018, buf=0xa797e40, len=4096, flags=0, addr=0xb41fdb38, addrlen=0xb41fdb14) at socket.cxx:776#4 0x08709b5d in PIPDatagramSocket::ReadFrom(void*, int, PIPSocket::Address&, unsigned short&) ( this=0x8b4d018, buf=0xa797e40, len=4096, addr=@0xb41fdc54, port=@0xa37f488) at ../common/sockets.cxx:708#5 0x0813b87f in RadiusSocket::MakeRequest(RadiusPDU const*, PIPSocket::Address const&, unsigned short, RadiusPDU*&) (this=0xb41fdbb8, request=0xa6aa618, serverAddress=@0xb41fdd78, serverPort=1813, pdu=@0x393a39b) at radproto.cxx:1589#6 0x08140108 in RadiusClient::MakeRequest(RadiusPDU const&, RadiusPDU*&) (this=0x8b48498, requestPDU=@0xa754e18, responsePDU=@0x393a39b) at radproto.cxx:2110#7 0x0814ce11 in RadAcct::Log(GkAcctLogger::AcctEvent, SmartPtr<CallRec> const&) (this=0x8b48008, evt=AcctStart, call=@0xa120e84) at radacct.cxx:275#8 0x0812517e in GkAcctLoggerList::LogAcctEvent(GkAcctLogger::AcctEvent, SmartPtr<CallRec> const&, long) (this=0x8b43b88, evt=AcctStart, call=@0xa120e84, now=0) at gkacct.cxx:890#9 0x080daccc in RasServer::LogAcctEvent(int, SmartPtr<CallRec>&, long) (this=0x393a39b, evt=1, call=@0xa120e84, now=0) at RasSrv.cxx:1020#10 0x080fa4e9 in CallSignalSocket::OnSetup(H225_Setup_UUIE&, PString&, PString&) (this=0xa120d08, Setup=@0xa63f0d8, in_rewrite_id=@0xb41ff918, out_rewrite_id=@0xb41ff8f8) at ProxyChannel.cxx:1358#11 0x080f3b0b in CallSignalSocket::ReceiveData() (this=0xa120d08) at ProxyChannel.cxx:827#12 0x0810103e in CallSignalSocket::Dispatch() (this=0xa120d08) at ProxyChannel.cxx:2076#13 0x0805043e in SimpleClassJob<ServerSocket>::Run() (this=0xa37f488) at job.h:230#14 0x0804924d in Worker::Main() (this=0x9735e40) at job.cxx:190#15 0x08744181 in PThread::PX_ThreadStart(void*) (arg=0xa7c5c18) at tlibthrd.cxx:1262#16 0x087826ff in pthread_start_thread (arg=0x8ad66d4) at manager.c:309(gdb)
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