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5530a93f47
There was a race condition where the connection of the victim of a KILL statement is disconnected while the KILL statement is executing. As a side effect of this fix, we will make XA PREPARE transactions immune to KILL statements. Starting with MariaDB 10.2, we have a pool of trx_t objects. trx_free() would only free memory to the pool. We poison the contents of freed objects in the pool in order to catch misuse. trx_free(): Unpoison also trx->mysql_thd and trx->state. This is to counter the poisoning of *trx in trx_pools->mem_free(). Unpoison only on AddressSanitizer or Valgrind, but not on MemorySanitizer. Pool: Unpoison allocated objects only on AddressSanitizer or Valgrind, but not on MemorySanitizer. innobase_kill_query(): Properly protect trx, acquiring also trx_sys_t::mutex and checking trx_t::mysql_thd and trx_t::state. |
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| archive | ||
| blackhole | ||
| cassandra | ||
| connect | ||
| csv | ||
| example | ||
| federated | ||
| federatedx | ||
| heap | ||
| innobase | ||
| maria | ||
| mroonga | ||
| myisam | ||
| myisammrg | ||
| oqgraph | ||
| perfschema | ||
| rocksdb | ||
| sequence | ||
| sphinx | ||
| spider | ||
| test_sql_discovery | ||
| tokudb | ||
| xtradb | ||