Bug #18226
Updated by Kefu Chai over 7 years ago
./bin/ceph_test_objectstore --gtest_filter=ObjectStore/StoreTest.SyntheticMatrixCsumVsCompression/2 fails with <pre> *** Caught signal (Segmentation fault) ** in thread 7f68ef3b2740 thread_name:ceph_test_objec ceph version Development (no_version) 1: (ceph::BackTrace::BackTrace(int)+0x2d) [0x556892527bcb] 2: (()+0x126af02) [0x5568929d8f02] 3: (()+0x11100) [0x7f68eefaa100] 4: (std::enable_if<boost::is_same<bluestore_extent_ref_map_t::record_t const, bluestore_extent_ref_map_t::record_t>::value||boost::is_same<bluestore_extent_ref_map_t::record_t con st, bluestore_extent_ref_map_t::record_t const>::value, void>::type _denc_friend<bluestore_extent_ref_map_t::record_t const, unsigned long>(bluestore_extent_ref_map_t::record_t con st&, unsigned long&)+0x14) [0x556892647d3a] 5: (bluestore_extent_ref_map_t::record_t::bound_encode(unsigned long&) const+0x23) [0x55689263dff5] 6: (bluestore_extent_ref_map_t::bound_encode(unsigned long&) const+0x68) [0x55689263e0c6] 7: (denc_traits<bluestore_extent_ref_map_t, void>::bound_encode(bluestore_extent_ref_map_t const&, unsigned long&, unsigned long)+0x27) [0x55689263e35b] 8: (std::enable_if<(denc_traits<bluestore_extent_ref_map_t, void>::supported!=(0))&&(!denc_traits<bluestore_extent_ref_map_t, void>::featured), void>::type denc<bluestore_extent_ref_map_t, denc_traits<bluestore_extent_ref_map_t, void> >(bluestore_extent_ref_map_t const&, unsigned long&, unsigned long)+0x2c) [0x5568926552c7] 9: (std::enable_if<boost::is_same<bluestore_shared_blob_t const, bluestore_shared_blob_t>::value||boost::is_same<bluestore_shared_blob_t const, bluestore_shared_blob_t const>::val ue, void>::type _denc_friend<bluestore_shared_blob_t const, unsigned long>(bluestore_shared_blob_t const&, unsigned long&)+0x5e) [0x55689264867c] 10: (bluestore_shared_blob_t::bound_encode(unsigned long&) const+0x23) [0x556892640251] 11: (denc_traits<bluestore_shared_blob_t, void>::bound_encode(bluestore_shared_blob_t const&, unsigned long&, unsigned long)+0x27) [0x5568926402e1] 12: (std::enable_if<(denc_traits<bluestore_shared_blob_t, void>::supported==(1))&&(!denc_traits<bluestore_shared_blob_t, void>::featured), void>::type encode<bluestore_shared_blob _t, denc_traits<bluestore_shared_blob_t, void> >(bluestore_shared_blob_t const&, ceph::buffer::list&, unsigned long)+0x44) [0x556892652978] 13: (BlueStore::_txc_write_nodes(BlueStore::TransContext*, std::shared_ptr<KeyValueDB::TransactionImpl>)+0xe85) [0x556892619681] 14: (BlueStore::queue_transactions(ObjectStore::Sequencer*, std::vector<ObjectStore::Transaction, std::allocator<ObjectStore::Transaction> >&, std::shared_ptr<TrackedOp>, ThreadPo ol::TPHandle*)+0x772) [0x55689261fbe2] 15: (ObjectStore::queue_transactions(ObjectStore::Sequencer*, std::vector<ObjectStore::Transaction, std::allocator<ObjectStore::Transaction> >&, Context*, Context*, Context*, std: :shared_ptr<TrackedOp>, ThreadPool::TPHandle*)+0x109) [0x5568924a662d] 16: (ObjectStore::queue_transaction(ObjectStore::Sequencer*, ObjectStore::Transaction&&, Context*, Context*, Context*, std::shared_ptr<TrackedOp>, ThreadPool::TPHandle*)+0xa5) [0x 5568924a64bd] </pre> because "denc_varint_lowz(v.length, p)" is called with <pre> <code class="cpp"> bound_encode(const std::list<T>& s, size_t& p) { size_t elem_size = 0; denc(*(const T*)nullptr, elem_size); p += sizeof(uint32_t) + elem_size * s.size(); } </code> </pre>