UniPS: createS3Lock meets nullptr when FAP

[CalvinNeo]

Bug Report

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This panic is the direct reason that makes TiFlash restarts. After TiFlash has restarted, everything is OK, and this error never happen again.

[2024/08/28 07:53:21.636 +00:00] [ERROR] [BaseDaemon.cpp:416] ["Address not mapped to object."] [source=BaseDaemon] [thread_id=2007]Show context
[2024/08/28 07:53:21.636 +00:00] [ERROR] [BaseDaemon.cpp:399] ["Address: NULL pointer."] [source=BaseDaemon] [thread_id=2007]
[2024/08/28 07:53:21.636 +00:00] [ERROR] [BaseDaemon.cpp:371] ["(from thread 1953) Received signal Segmentation fault(11)."] [source=BaseDaemon] [thread_id=2007]


[2024/08/28 07:53:21.636 +00:00] [ERROR] [BaseDaemon.cpp:563] ["
  0xaaaad36f7a2c\tfaultSignalHandler(int, siginfo_t*, void*) [tiflash+122124844]
                \tlibs/libdaemon/src/BaseDaemon.cpp:214
  0xffff9594e850\t<unknown symbol> [linux-vdso.so.1+2128]
  0xaaaad472ac58\tDB::PS::V3::S3LockLocalManager::createS3Lock(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>> const&, DB::S3::S3FilenameView const&, unsigned long) [tiflash+139111512]
                \tdbms/src/Storages/Page/V3/Universal/S3LockLocalManager.cpp:229
  0xaaaad472a57c\tDB::PS::V3::S3LockLocalManager::createS3LockForWriteBatch(DB::UniversalWriteBatch&) [tiflash+139109756]
                \tdbms/src/Storages/Page/V3/Universal/S3LockLocalManager.cpp:173
  0xaaaad4720150\tDB::UniversalPageStorage::write(DB::UniversalWriteBatch&&, DB::PS::V3::PageType, std::__1::shared_ptr<DB::WriteLimiter> const&) const [tiflash+139067728]
                \tdbms/src/Storages/Page/V3/Universal/UniversalPageStorage.cpp:118
  0xaaaad462dc24\tDB::PageWriter::write(DB::WriteBatchWrapper&&, std::__1::shared_ptr<DB::WriteLimiter>) const [tiflash+138075172]
                \tdbms/src/Storages/Page/PageStorage.cpp:780
  0xaaaad3495588\tDB::DM::WriteBatches::writeLogAndData() [tiflash+119625096]
                \tdbms/src/Storages/DeltaMerge/WriteBatchesImpl.h:146
  0xaaaad3573f3c\tDB::DM::StableValueSpace::createFromCheckpoint(std::__1::shared_ptr<DB::Logger> const&, DB::DM::DMContext&, std::__1::shared_ptr<DB::UniversalPageStorage>, unsigned long, DB::DM::WriteBatches&) [tiflash+120536892]
                \tdbms/src/Storages/DeltaMerge/StableValueSpace.cpp:283
  0xaaaad34ef63c\tDB::DM::Segment::createTargetSegmentsFromCheckpoint(std::__1::shared_ptr<DB::Logger> const&, DB::DM::DMContext&, unsigned long, std::__1::vector<DB::DM::Segment::SegmentMetaInfo, std::__1::allocator<DB::DM::Segment::SegmentMetaInfo>> const&, DB::DM::RowKeyRange const&, std::__1::shared_ptr<DB::UniversalPageStorage>, DB::DM::WriteBatches&) [tiflash+119993916]
                \tdbms/src/Storages/DeltaMerge/Segment.cpp:490
  0xaaaad407d870\tDB::DM::DeltaMergeStore::buildSegmentsFromCheckpointInfo(std::__1::shared_ptr<DB::DM::DMContext> const&, DB::DM::RowKeyRange const&, std::__1::shared_ptr<DB::CheckpointInfo> const&) const [tiflash+132110448]
                \tdbms/src/Storages/DeltaMerge/DeltaMergeStore_Ingest.cpp:1140
  0xaaaad4068954\tDB::DM::DeltaMergeStore::buildSegmentsFromCheckpointInfo(DB::Context const&, DB::Settings const&, DB::DM::RowKeyRange const&, std::__1::shared_ptr<DB::CheckpointInfo> const&) [tiflash+132024660]
                \tdbms/src/Storages/DeltaMerge/DeltaMergeStore.h:401
  0xaaaad4c469ac\tDB::FastAddPeerImplWrite(DB::TMTContext&, DB::TiFlashRaftProxyHelper const*, unsigned long, unsigned long, std::__1::tuple<std::__1::shared_ptr<DB::CheckpointInfo>, std::__1::shared_ptr<DB::Region>, raft_serverpb::RaftApplyState, raft_serverpb::RegionLocalState>&&, unsigned long) [tiflash+144468396]
                \tdbms/src/Storages/KVStore/MultiRaft/Disagg/FastAddPeer.cpp:348
  0xaaaad4c47e30\tDB::FastAddPeerImpl(std::__1::shared_ptr<DB::FastAddPeerContext>, DB::TMTContext&, DB::TiFlashRaftProxyHelper const*, unsigned long, unsigned long, unsigned long) [tiflash+144473648]
                \tdbms/src/Storages/KVStore/MultiRaft/Disagg/FastAddPeer.cpp:455
  0xaaaad4c4b30c\tstd::__1::__function::__func<FastAddPeer::$_5, std::__1::allocator<FastAddPeer::$_5>, DB::FastAddPeerRes ()>::operator()() [tiflash+144487180]
                \tdbms/src/Storages/KVStore/MultiRaft/Disagg/FastAddPeer.cpp:670
  0xaaaad4c4f670\tstd::__1::packaged_task<DB::FastAddPeerRes ()>::operator()() [tiflash+144504432]
                \t/usr/lib/llvm-17/bin/../include/c++/v1/future:1891
  0xaaaad4c4f2dc\tDB::AsyncTasks<unsigned long, std::__1::function<DB::FastAddPeerRes ()>, DB::FastAddPeerRes>::addTaskWithCancel(unsigned long, std::__1::function<DB::FastAddPeerRes ()>, std::__1::function<void ()>)::'lambda'()::operator()() const [tiflash+144503516]
                \tdbms/src/Storages/KVStore/Utils/AsyncTasks.h:289
  0xaaaace47903c\tDB::ThreadPoolImpl<DB::ThreadFromGlobalPoolImpl<false>>::worker(std::__1::__list_iterator<DB::ThreadFromGlobalPoolImpl<false>, void*>) [tiflash+35622972]
                \t/usr/lib/llvm-17/bin/../include/c++/v1/__functional/function.h:517
  0xaaaace47bd94\tstd::__1::__function::__func<DB::ThreadFromGlobalPoolImpl<false>::ThreadFromGlobalPoolImpl<bool DB::ThreadPoolImpl<DB::ThreadFromGlobalPoolImpl<false>>::scheduleImpl<bool>(std::__1::function<void ()>, long, std::__1::optional<unsigned long>, bool)::'lambda0'()>(bool&&)::'lambda'(), std::__1::allocator<DB::ThreadFromGlobalPoolImpl<false>::ThreadFromGlobalPoolImpl<bool DB::ThreadPoolImpl<DB::ThreadFromGlobalPoolImpl<false>>::scheduleImpl<bool>(std::__1::function<void ()>, long, std::__1::optional<unsigned long>, bool)::'lambda0'()>(bool&&)::'lambda'()>, void ()>::operator()() [tiflash+35634580]
                \tdbms/src/Common/UniThreadPool.cpp:160
  0xaaaace477b38\tDB::ThreadPoolImpl<std::__1::thread>::worker(std::__1::__list_iterator<std::__1::thread, void*>) [tiflash+35617592]
                \t/usr/lib/llvm-17/bin/../include/c++/v1/__functional/function.h:517
  0xaaaace479f9c\tvoid* std::__1::__thread_proxy[abi:ue170006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, void DB::ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, long, std::__1::optional<unsigned long>, bool)::'lambda0'()>>(void*) [tiflash+35626908]
                \tdbms/src/Common/UniThreadPool.cpp:160
  0xffff9201d5c8\tstart_thread [libc.so.6+513480]
                \t./nptl/./nptl/pthread_create.c:442"] [source=BaseDaemon] [thread_id=2007]Show

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3. What did you see instead (Required)

4. What is your TiFlash version? (Required)

based on v7.5.3 with FAP functions

[JaySon-Huang]

Only happens when FAP is enabled. Which is not enabled by default. Marks the severity as major.