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The problem is that the read and write methods of the shared memory transport (protocol) didn't react to asynchronous close events, which could lead to a lock up as the client would wait (until time out) for a server response that will never come. The solution is to also wait for close events while waiting for I/O from or to the server. mysql-test/r/shm.result: Add test case result for Bug#33899 mysql-test/t/shm.test: Add test case for Bug#33899 vio/viosocket.c: Also wait for close events.
38 lines
1.3 KiB
Text
38 lines
1.3 KiB
Text
# We currently only have shm support on windows, so in order
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# to optimize things we skip this test on all other platforms
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--source include/windows.inc
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# Only run this test if shared memory is avaliable
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let $shm= query_get_value("SHOW VARIABLES LIKE 'shared_memory'", Value, 1);
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if (`SELECT '$shm' != 'ON'`){
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skip No shm support;
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}
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# Source select test case
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-- source include/common-tests.inc
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#
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# Bug #24924: shared-memory-base-name that is too long causes buffer overflow
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#
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--exec $MYSQLADMIN --no-defaults --user=root --host=127.0.0.1 --port=$MASTER_MYPORT --shared-memory-base-name=HeyMrBaseNameXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ping
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#
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# Bug #33899: Deadlock in mysql_real_query with shared memory connections
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#
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let $name= query_get_value("SHOW GLOBAL VARIABLES LIKE 'shared_memory_base_name'", Value, 1);
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let $stmt= `SELECT REPEAT('a', 2048)`;
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SET @max_allowed_packet= @@global.max_allowed_packet;
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SET @net_buffer_length= @@global.net_buffer_length;
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SET GLOBAL max_allowed_packet= 1024;
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SET GLOBAL net_buffer_length= 1024;
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--error 1
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--exec echo SELECT '$stmt'| $MYSQL --protocol=memory --shared-memory-base-name=$name 2>&1
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SET GLOBAL max_allowed_packet= @max_allowed_packet;
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SET GLOBAL net_buffer_length= @net_buffer_length;
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--echo End of 5.0 tests.
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