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MDEV-28762: recursive call of some json functions without stack control

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Analysis: Some recursive json functions dont check for stack control
Fix: Add check_stack_overrun(). The last argument is NULL because it is not
used
This commit is contained in:
Rucha Deodhar
2022-06-21 14:58:34 +05:30
parent 1848804840
commit dbe39f14fe
4 changed files with 196 additions and 101 deletions
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28
mysql-test/main/json_debug_nonembedded.result Normal file
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#
# Beginning of 10.3 test
# MDEV-28762: recursive call of some json functions without stack control
#
SET @saved_dbug = @@debug_dbug;
SET debug_dbug='+d,json_check_min_stack_requirement';
SET @json1= '{"key1":"val1"}';
SET @json2= '{"key1":"val1"}';
SELECT JSON_CONTAINS(@json1, @json2);
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SET debug_dbug='+d,temp';
SET @json1= '[1, 2, 3, 4]';
SET @json2= '[5, 6, 7, 8]';
SELECT JSON_MERGE(@json1, @json2);
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SELECT JSON_MERGE_PATCH(@json1, @json2);
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SELECT JSON_CONTAINS_PATH('{"a":[{"c":[1,{"a":[0,1,2]},3]}], "b":[1,2,3]}', 'one', "$**.a[2]");
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SET @j = '["abc", [{"k": "10"}, "def"], {"x":"abc"}, {"y":"bcd"}]';
SELECT JSON_SEARCH(@j, 'all', 'abc', NULL, '$[2]');
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SELECT JSON_EXTRACT('{"key1":"asd", "key2":[2,3]}', "$.key1", "$.key2");
ERROR HY000: Thread stack overrun: 'used bytes' used of a 'available' byte stack, and 'X' bytes needed. Use 'mysqld --thread_stack=#' to specify a bigger stack
SET @@debug_dbug= @saved_dbug;
#
# End of 10.3 test
#