• Jan Lindström's avatar
    MDEV-23101 : SIGSEGV in lock_rec_unlock() when Galera is enabled · 224c9504
    Jan Lindström authored
    Remove incorrect BF (brute force) handling from lock_rec_has_to_wait_in_queue
    and move condition to correct callers. Add a function to report
    BF lock waits and assert if incorrect BF-BF lock wait happens.
    
    wsrep_report_bf_lock_wait
    	Add a new function to report BF lock wait.
    
    wsrep_assert_no_bf_bf_wait
    	Add a new function to check do we have a
    	BF-BF wait and if we have report this case
    	and assert as it is a bug.
    
    lock_rec_has_to_wait
    	Use new wsrep_assert_bf_wait to check BF-BF wait.
    
    lock_rec_create_low
    lock_table_create
    	Use new function to report BF lock waits.
    
    lock_rec_insert_by_trx_age
    lock_grant_and_move_on_page
    lock_grant_and_move_on_rec
    	Assert that trx is not Galera as VATS is not compatible
    	with Galera.
    
    lock_rec_add_to_queue
    	If there is conflicting lock in a queue make sure that
    	transaction is BF.
    
    lock_rec_has_to_wait_in_queue
    	Remove incorrect BF handling. If there is conflicting
    	locks in a queue all transactions must wait.
    
    lock_rec_dequeue_from_page
    lock_rec_unlock
    	If there is conflicting lock make sure it is not
    	BF-BF case.
    
    lock_rec_queue_validate
    	Add Galera record locking rules comment and use
    	new function to report BF lock waits.
    
    All attempts to reproduce the original assertion have been
    failed. Therefore, there is no test case on this commit.
    224c9504
wsrep_thd.h 2.05 KB