Worker hits ASSERT condition in production

lapulya04 · January 17, 2024, 1:00am

Hey,

we recently encountered an abort from this line in the worker’s code

versatica/mediasoup/blob/v3/worker/src/RTC/RateCalculator.cpp#L37


      
          		if (this->newestItemIndex < 0 || nowMs - this->newestItemStartTime >= this->itemSizeMs)
          		{
          			this->newestItemIndex++;
          			this->newestItemStartTime = nowMs;
          
          			if (this->newestItemIndex >= this->windowItems)
          			{
          				this->newestItemIndex = 0;
          			}
          
          			MS_ASSERT(
          			  this->newestItemIndex != this->oldestItemIndex || this->oldestItemIndex == -1,
          			  "newest index overlaps with the oldest one");
          
          			// Set the newest item.
          			BufferItem& item = this->buffer[this->newestItemIndex];
          			item.count       = size;
          			item.time        = nowMs;
          		}
          		else
          		{

			MS_ASSERT(
			  this->newestItemIndex != this->oldestItemIndex || this->oldestItemIndex == -1,
			  "newest index overlaps with the oldest one");

unfortunately we don’t have logs just the core dump

the stack trace shows

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f8d1f851535 in __GI_abort () at abort.c:79
#2  0x000055814b9c3e7f in RTC::RateCalculator::Update(unsigned long, unsigned long) ()
#3  0x000055814ba754d1 in RTC::WebRtcTransport::SendRtpPacket(RTC::Consumer*, RTC::RtpPacket*, std::function<void (bool)> const*) ()
#4  0x000055814ba528d2 in RTC::Transport::OnConsumerSendRtpPacket(RTC::Consumer*, RTC::RtpPacket*) ()
#5  0x000055814ba116f0 in RTC::SimpleConsumer::SendRtpPacket(RTC::RtpPacket*, std::shared_ptr<RTC::RtpPacket>&) ()
#6  0x000055814b9d38c2 in RTC::Router::OnTransportProducerRtpPacketReceived(RTC::Transport*, RTC::Producer*, RTC::RtpPacket*) ()
#7  0x000055814ba510a0 in RTC::Transport::OnProducerRtpPacketReceived(RTC::Producer*, RTC::RtpPacket*) ()
#8  0x000055814b9bd28e in RTC::Producer::ReceiveRtpPacket(RTC::RtpPacket*) ()
#9  0x000055814ba3d326 in RTC::Transport::ReceiveRtpPacket(RTC::RtpPacket*) ()
#10 0x000055814ba7ee97 in RTC::WebRtcTransport::OnRtpDataReceived(RTC::TransportTuple*, unsigned char const*, unsigned long) ()
#11 0x000055814ba808b3 in RTC::WebRtcTransport::OnPacketReceived(RTC::TransportTuple*, unsigned char const*, unsigned long) ()
#12 0x000055814ba81192 in non-virtual thunk to RTC::WebRtcTransport::OnUdpSocketPacketReceived(RTC::UdpSocket*, unsigned char const*, unsigned long, sockaddr const*) ()
#13 0x000055814ba6a5d1 in RTC::UdpSocket::UserOnUdpDatagramReceived(unsigned char const*, unsigned long, sockaddr const*) ()
#14 0x000055814b9218ce in onRecv(uv_udp_s*, long, uv_buf_t const*, sockaddr const*, unsigned int) ()
#15 0x000055814bde4c5d in uv.udp_io ()
#16 0x000055814bde7fd6 in uv.io_poll ()
#17 0x000055814bddb6ae in uv_run ()
#18 0x000055814b8c410f in DepLibUV::RunLoop() ()
#19 0x000055814b8ed381 in Worker::Worker(Channel::ChannelSocket*, PayloadChannel::PayloadChannelSocket*) ()
#20 0x000055814b8be813 in mediasoup_worker_run ()
#21 0x000055814b8bc709 in main ()

ibc · January 17, 2024, 6:28am

This is a bug. Please report an issue in mediasoup GitHub. Thanks.

lapulya04 · January 17, 2024, 9:59am

will do, thanks

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Worker hits ASSERT condition in production

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