Crash in MariaDBParser::Helper::get_query_info()

2024-11-06 11:27:24   info   : (34291974) [readwritesplit] (Galera-RW-Service); Route query to primary: ProdDB7 <

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::dump_stacktrace(std::function<void (char const*)>)): maxutils/maxbase/src/stacktrace.cc:227

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::_Function_base::~_Function_base()): /usr/include/c++/11/bits/std_function.h:243

  /usr/bin/maxscale (sigfatal_handler(int)): server/core/gateway.cc:577

  /lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MariaDBParser::Helper::get_query_info(GWBUF const&) const): server/modules/protocol/MariaDB/mariadbparser.cc:204

  /usr/lib/x86_64-linux-gnu/maxscale/libpp_sqlite.so ((anonymous namespace)::SqliteParser::get_query_info(GWBUF const&) const): server/modules/parser_plugin/pp_sqlite/pp_sqlite.cc:5213

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::CachingParser::get_query_info(GWBUF const&) const): server/core/cachingparser.cc:593

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (mariadb::QueryClassifier::RouteInfo::set_multi_part_packet(bool)): include/maxscale/queryclassifier.hh:281 (discriminator 4)

  /usr/lib/x86_64-linux-gnu/maxscale/libreadwritesplit.so (RWSplitSession::route_query(GWBUF&&)): server/modules/routing/readwritesplit/rwsplitsession.cc:100

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MXS_SESSION::delay_routing(maxscale::Routable*, GWBUF&&, std::chrono::duration<long, std::ratio<1l, 1000l> >, std::function<bool (GWBUF&&)>&&)::{lambda(maxbase::Worker::Callable::Action)#1}::operator()(maxbase::Worker::Callable::Action) const [clone .lto_priv.0]): server/core/session.cc:692

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::DCallFunctorWithCancel::do_call(maxbase::Worker::Callable::Action)): maxutils/maxbase/include/maxbase/worker.hh:1178

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::DCall::call(maxbase::Worker::Callable::Action)): maxutils/maxbase/include/maxbase/worker.hh:1022

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::WorkerTimer::handle_poll_events(maxbase::Worker*, unsigned int, maxbase::Pollable::Context)): maxutils/maxbase/src/worker.cc:339

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::deliver_events(maxbase::Pollable*, unsigned int, maxbase::Pollable::Context)): maxutils/maxbase/src/worker.cc:1084

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): maxutils/maxbase/src/worker.cc:1171

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): maxutils/maxbase/src/worker.cc:875

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (__xmknodat): ??:?

MaxScale 24.02.3 received fatal signal 11. Commit ID: 60d99b4ba5fdc7e16dce63f69a73eed0398b64e9, System name: Linux, Release string: Ubuntu 22.04.5 LTS 22.04.5 LTS (Jammy Jellyfish), Thread: Worker-01Writing core dump.

...

   196 mxs::Parser::QueryInfo MariaDBParser::Helper::get_query_info(const GWBUF& packet) const

   197 {

   198     QueryInfo rval;

   199     uint32_t len = packet.length();

   200     rval.empty = len == MYSQL_HEADER_LEN;

   201 

   202     if (!rval.empty)

   203     {

>> 204         uint8_t cmd = packet.data()[MYSQL_HEADER_LEN];

...