Details
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Bug
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Resolution: Fixed
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Major
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Cheshire-Cat
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Triaged
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1
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Unknown
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KV-Engine Sprint 2021 July
Description
During local testing of FollyExecutorPool under TSan running make simple-test the following error was reported by TSan after Breakpad reported an issue with phosphor:
WARNING: ThreadSanitizer: signal-unsafe call inside of a signal (pid=18845)
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Full backtrace below.
To clarify, this MB is tracking the TSan issue after a crash is seem - the actual crash it it's own bug, which is tracked via MB-42441.
WARNING: ThreadSanitizer: signal-unsafe call inside of a signal (pid=18845)
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#0 operator new(unsigned long) <null> (libtsan.so.0+0x00000006d926)
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#1 __gnu_cxx::new_allocator<char>::allocate(unsigned long, void const*) /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/ext/new_allocator.h:111 (libmemcached_logger.so.1.0.0+0x000000012752)
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#2 std::allocator_traits<std::allocator<char> >::allocate(std::allocator<char>&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/bits/alloc_traits.h:436 (libmemcached_logger.so.1.0.0+0x000000012752)
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#3 std::allocator<char>::value_type* fmt::v5::internal::allocate<std::allocator<char> >(std::allocator<char>&, unsigned long) /home/couchbase/server/third_party/spdlog/include/spdlog/fmt/bundled/format.h:403 (libmemcached_logger.so.1.0.0+0x000000012752)
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#4 fmt::v5::basic_memory_buffer<char, 176ul, std::allocator<char> >::grow(unsigned long) /home/couchbase/server/third_party/spdlog/include/spdlog/fmt/bundled/format.h:710 (libmemcached_logger.so.1.0.0+0x000000012752)
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#5 fmt::v5::internal::basic_buffer<char>::reserve(unsigned long) /home/couchbase/server/third_party/spdlog/include/spdlog/fmt/bundled/core.h:431 (libmemcached_logger.so.1.0.0+0x00000001253e)
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#6 void fmt::v5::internal::basic_buffer<char>::append<char>(char const*, char const*) /home/couchbase/server/third_party/spdlog/include/spdlog/fmt/bundled/format.h:566 (libmemcached_logger.so.1.0.0+0x00000001253e)
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#7 void spdlog::details::fmt_helper::append_buf<500ul, 176ul>(fmt::v5::basic_memory_buffer<char, 500ul, std::allocator<char> > const&, fmt::v5::basic_memory_buffer<char, 176ul, std::allocator<char> >&) /home/couchbase/server/third_party/spdlog/include/spdlog/details/fmt_helper.h:37 (libmemcached_logger.so.1.0.0+0x00000001253e)
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#8 async_msg /home/couchbase/server/third_party/spdlog/include/spdlog/details/thread_pool.h:80 (libmemcached_logger.so.1.0.0+0x00000001253e)
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#9 spdlog::details::thread_pool::post_log(std::shared_ptr<spdlog::async_logger>&&, spdlog::details::log_msg&&, spdlog::async_overflow_policy) /home/couchbase/server/third_party/spdlog/include/spdlog/details/thread_pool.h:151 (libmemcached_logger.so.1.0.0+0x00000000fe57)
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#10 spdlog::async_logger::sink_it_(spdlog::details::log_msg&) /home/couchbase/server/third_party/spdlog/include/spdlog/details/async_logger_impl.h:46 (libmemcached_logger.so.1.0.0+0x00000000f892)
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#11 void spdlog::logger::log<char [11], char const*>(spdlog::level::level_enum, char const*, char const (&) [11], char const* const&) /home/couchbase/server/third_party/spdlog/include/spdlog/details/logger_impl.h:65 (memcached+0x0000006702af)
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#12 dumpCallback(google_breakpad::MinidumpDescriptor const&, void*, bool) /home/couchbase/server/kv_engine/utilities/breakpad.cc:124 (memcached+0x00000066fc4c)
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#13 google_breakpad::ExceptionHandler::GenerateDump(google_breakpad::ExceptionHandler::CrashContext*) src/client/linux/handler/exception_handler.cc:566 (memcached+0x000000683d79)
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#14 std::atomic<phosphor::ChunkLock::State>::compare_exchange_weak(phosphor::ChunkLock::State&, phosphor::ChunkLock::State, std::memory_order, std::memory_order) /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/atomic:288 (libphosphor.so+0x00000000e8a9)
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#15 std::atomic<phosphor::ChunkLock::State>::compare_exchange_weak(phosphor::ChunkLock::State&, phosphor::ChunkLock::State, std::memory_order) /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/atomic:307 (libphosphor.so+0x00000000e8a9)
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#16 phosphor::ChunkLock::lockMaster() /home/couchbase/server/phosphor/src/chunk_lock.cc:72 (libphosphor.so+0x00000000e8a9)
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#17 phosphor::MasterChunkLock::lock() /home/couchbase/server/phosphor/src/chunk_lock.cc:105 (libphosphor.so+0x00000000e8a9)
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#18 phosphor::TraceLog::evictThreads(std::lock_guard<phosphor::TraceLog>&) /home/couchbase/server/phosphor/src/trace_log.cc:309 (libphosphor.so+0x0000000193fc)
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#19 phosphor::TraceLog::stop(std::lock_guard<phosphor::TraceLog>&, bool) /home/couchbase/server/phosphor/src/trace_log.cc:93 (libphosphor.so+0x0000000193fc)
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#20 phosphor::TraceLog::stop(bool) /home/couchbase/server/phosphor/src/trace_log.cc:70 (libphosphor.so+0x000000018cae)
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#21 deinitializeTracing() /home/couchbase/server/kv_engine/daemon/tracing.cc:107 (memcached+0x0000004fb6b6)
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#22 memcached_main(int, char**) /home/couchbase/server/kv_engine/daemon/memcached.cc:1563 (memcached+0x00000046d4e0)
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#23 main /home/couchbase/server/kv_engine/daemon/main.cc:36 (memcached+0x0000004659a0)
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kv_engine commit: http://review.couchbase.org/c/kv_engine/+/135709/20
Complete log: sanitizers.log.18845
Attachments
Issue Links
- is duplicated by
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- Resolved
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