BDS-9393Crash caused by shared pointer issue.
Recently had an unexplained crash that seems related to how a pointer in the main tick thread is handled. While this seems to be very rare in causing crashes, if this is related to an issue with pointers then I can see it recurring.
Dump:
Oct 14 11:08:46 server.address.removed bash[431]: [2020-10-14 11:08:46 INFO] Package: com.mojang.minecraft.dedicatedserver
Oct 14 11:08:46 server.address.removed bash[431]: Version: 1.16.40.2
Oct 14 11:08:46 server.address.removed bash[431]: OS: Linux
Oct 14 11:08:46 server.address.removed bash[431]: Server start: 2020-10-13 22:01:27 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Dmp timestamp: 2020-10-14 11:08:46 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Upload Date: 2020-10-14 11:08:46 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Session ID: c7953ef7-5953-475c-80e6-1251991278cc
Oct 14 11:08:46 server.address.removed bash[431]: Commit hash:
Oct 14 11:08:46 server.address.removed bash[431]: Build id: development
Oct 14 11:08:46 server.address.removed bash[431]: CrashReporter Key: 8c4937c1-64cb-3532-a8dc-1deb28f67293
Oct 14 11:08:46 server.address.removed bash[431]: Crash
Oct 14 11:08:46 server.address.removed bash[431]: [2020-10-14 11:08:46 INFO] at std::__shared_ptr<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2>::get[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::__shared_ptr_access<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2, false, false>::_M_get[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::__shared_ptr_access<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2, false, false>::operator->[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at MapItemSavedData::_findTrackedMapEntity[BlockPos const&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at MapItemSavedData::getUpdatePacket[Level&, BlockPos const&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ItemFrameBlockActor::tick[BlockSource&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at LevelChunk::tickBlockEntities[BlockSource&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at LevelChunk::tick[BlockSource&, Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Player::tickWorld[Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerPlayer::tickWorld[Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::function<bool [Player&]>::operator[][Player&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Level::forEachPlayer[std::function<bool [Player&]>] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Level::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerLevel::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at GameSession::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Minecraft::tickSimtime[int, int] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Minecraft::update[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerInstance::_update[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at clone (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: 135754e4-58d3-4465-b0f2-6f7ad4637d75
Oct 14 11:08:46 server.address.removed systemd[1]: mcbe@ServerName.service: Main process exited, code=exited, status=1/FAILURE
Created Issue:
Crash caused by shared pointer issue.
Recently had an unexplained crash that seems related to how a pointer in the main tick thread is handled. While this seems to be very rare in causing crashes, if this is related to an issue with pointers then I can see it recurring.
Dump:
Oct 14 11:08:46 server.address.removed bash[431]: [2020-10-14 11:08:46 INFO] Package: com.mojang.minecraft.dedicatedserver
Oct 14 11:08:46 server.address.removed bash[431]: Version: 1.16.40.2
Oct 14 11:08:46 server.address.removed bash[431]: OS: Linux
Oct 14 11:08:46 server.address.removed bash[431]: Server start: 2020-10-13 22:01:27 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Dmp timestamp: 2020-10-14 11:08:46 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Upload Date: 2020-10-14 11:08:46 PDT
Oct 14 11:08:46 server.address.removed bash[431]: Session ID: c7953ef7-5953-475c-80e6-1251991278cc
Oct 14 11:08:46 server.address.removed bash[431]: Commit hash:
Oct 14 11:08:46 server.address.removed bash[431]: Build id: development
Oct 14 11:08:46 server.address.removed bash[431]: CrashReporter Key: 8c4937c1-64cb-3532-a8dc-1deb28f67293
Oct 14 11:08:46 server.address.removed bash[431]: Crash
Oct 14 11:08:46 server.address.removed bash[431]: [2020-10-14 11:08:46 INFO] at std::__shared_ptr<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2>::get[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::__shared_ptr_access<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2, false, false>::_M_get[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::__shared_ptr_access<MapItemTrackedActor, [__gnu_cxx::_Lock_policy]2, false, false>::operator->[] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at MapItemSavedData::_findTrackedMapEntity[BlockPos const&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at MapItemSavedData::getUpdatePacket[Level&, BlockPos const&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ItemFrameBlockActor::tick[BlockSource&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at LevelChunk::tickBlockEntities[BlockSource&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at LevelChunk::tick[BlockSource&, Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Player::tickWorld[Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerPlayer::tickWorld[Tick const&] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at std::function<bool [Player&]>::operator[][Player&] const (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Level::forEachPlayer[std::function<bool [Player&]>] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Level::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerLevel::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at GameSession::tick[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Minecraft::tickSimtime[int, int] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at Minecraft::update[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at ServerInstance::_update[] (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: at clone (UnknownFile:?)
Oct 14 11:08:46 server.address.removed bash[431]: 135754e4-58d3-4465-b0f2-6f7ad4637d75
Oct 14 11:08:46 server.address.removed systemd[1]: mcbe@ServerName.service: Main process exited, code=exited, status=1/FAILURE
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Hi Amuhn,
If there are specific reproduction steps that one can follow to reproduce the error please add them to the report and I can do my best to confirm it.
If its just a random crash these are logged through to Mojang and investigated internally. We don't track them here because being random or rare they are almost impossible to confirm as fixed.
Cheers,
Ionic
Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
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