Details
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Type:
Bug
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Status: Closed
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Priority:
Minor
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: None
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Component/s: None
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Labels:
Description
5.1, debug compilation, VS2010.
maria.optimize fails due to runtime check by compiler
maria.optimize [ fail ] Found warnings/errors in server log file!
Test ended at 2010-12-06 14:09:08
line
Error:Run-Time Check Failure #4 - Stack area around _alloca memory reserved by this function is corrupted
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Re: maria.optimize corrupts stack around alloca() call
It looks like
next_page= _ma_kpos(nod_flag,keypos);
statement in ma_check.c : sort_one_index()
overwrites at least one byte after the end of buff (that was allocated with my_alloca).
Re: maria.optimize corrupts stack around alloca() call
The bug is visible under valgrind if change my_alloca call with malloc() (not alloca())
Re: maria.optimize corrupts stack around alloca() call
Fix committed into 5.1
Launchpad bug id: 686010
Re: maria.optimize corrupts stack around alloca() call
This is runtime check due to compiler option /RTC1.
The callstack leading to it is can be examined if mysqld.exe is started under debugger
perl mysql-test-run.pl --suite=maria optimize --debugger=devenv
> mysqld.exe!sort_one_index(st_handler_check_param * param, st_maria_handler * info, st_maria_keydef * keyinfo, unsigned __int64 pagepos, int new_file) Line 3211 + 0x15 bytes C
mysqld.exe!sort_one_index(st_handler_check_param * param, st_maria_handler * info, st_maria_keydef * keyinfo, unsigned __int64 pagepos, int new_file) Line 3163 + 0x1d bytes C
mysqld.exe!maria_sort_index(st_handler_check_param * param, st_maria_handler * info, char * name) Line 3036 + 0x2d bytes C
mysqld.exe!ha_maria::repair(THD * thd, st_handler_check_param * param, bool do_optimize) Line 1526 + 0x1a bytes C++
mysqld.exe!ha_maria::optimize(THD * thd, st_ha_check_opt * check_opt) Line 1403 + 0x12 bytes C++
mysqld.exe!handler::ha_optimize(THD * thd, st_ha_check_opt * check_opt) Line 3296 + 0x1a bytes C++
mysqld.exe!mysql_admin_table(THD * thd, TABLE_LIST * tables, st_ha_check_opt * check_opt, const char * operator_name, thr_lock_type lock_type, bool open_for_modify, bool no_warnings_for_error, unsigned int extra_open_options, int (THD , TABLE_LIST *, st_ha_check_opt *) prepare_func, int (THD , st_ha_check_opt *) operator_func, int (THD , TABLE_LIST *) view_operator_func) Line 4819 + 0x19 bytes C++
mysqld.exe!mysql_optimize_table(THD * thd, TABLE_LIST * tables, st_ha_check_opt * check_opt) Line 5093 + 0x51 bytes C++
mysqld.exe!mysql_execute_command(THD * thd) Line 3130 + 0x3d bytes C++
mysqld.exe!mysql_parse(THD * thd, char * rawbuf, unsigned int length, const char * * found_semicolon) Line 6151 + 0x9 bytes C++
mysqld.exe!dispatch_command(enum_server_command command, THD * thd, char * packet, unsigned int packet_length) Line 1273 + 0x22 bytes C++
mysqld.exe!do_command(THD * thd) Line 899 + 0x1b bytes C++