https://bugs.kde.org/show_bug.cgi?id=439733
--- Comment #1 from gr...@kde.org --- With some additional debugging added, and a mutex lock on QueryBuilder::exec() so it is singlethreaded, I get this output (as an indication what Akonadi is building up): ``` org.kde.pim.akonadiserver: Prepared new query for "SELECT PartTable.id, PartTable.pimItemId, PartTable.partTypeId, PartTable.data, PartTable.datasize, PartTable.version, PartTable.storage FROM PartTable WHERE ( PartTable.partTypeId = :0 AND storage = :1 AND data IS NOT NULL )" org.kde.pim.akonadiserver: Bound 0 QVariant(qlonglong, 1) org.kde.pim.akonadiserver: Bound 1 QVariant(qlonglong, 1) Assertion failed: (param->buffer_length != 0), function setup_one_fetch_function, file /wrkdirs/usr/ports/databases/mysql57-client/work/mysql-5.7.34/libmysql/libmysql.c, line 4112. ``` and this slightly-more-detailed backtrace: ``` #0 thr_kill () at thr_kill.S:4 #1 0x0000000800ff71b4 in __raise (s=s@entry=6) at /usr/src/src/lib/libc/gen/raise.c:52 #2 0x00000008010ac129 in abort () at /usr/src/src/lib/libc/stdlib/abort.c:67 #3 0x0000000800fda0c1 in __assert (func=<optimized out>, file=<optimized out>, line=<optimized out>, failedexpr=<optimized out>) at /usr/src/src/lib/libc/gen/assert.c:51 #4 0x0000000805efeb77 in ?? () from /usr/local/lib/mysql/libmysqlclient.so.20 #5 0x0000000805efe5ce in mysql_stmt_bind_result () from /usr/local/lib/mysql/libmysqlclient.so.20 #6 0x000000080325fe6f in ?? () from /usr/local/lib/qt5/plugins/sqldrivers/libqsqlmysql.so #7 0x0000000800756da7 in QSqlQuery::exec() () from /usr/local/lib/qt5/libQt5Sql.so.5 #8 0x00000000003b9745 in Akonadi::Server::QueryBuilder::exec ( this=<optimized out>) at /zbigone/src/kde/invent/akonadi/src/server/storage/querybuilder.cpp:418 #9 0x00000000003b4d86 in Akonadi::Server::PartHelper::remove (column=..., value=...) at /zbigone/src/kde/invent/akonadi/src/server/storage/parthelper.cpp:108 #10 0x0000000000359fbb in Akonadi::Server::DataStore::unhideAllPimItems ( this=<optimized out>) at /zbigone/src/kde/invent/akonadi/src/server/storage/datastore.cpp:1177 #11 0x00000000002749f1 in Akonadi::Server::AkonadiServer::init ( this=0x7fffffffd158) at /zbigone/src/kde/invent/akonadi/src/server/akonadi.cpp:152 ``` -- You are receiving this mail because: You are the assignee for the bug.