[MDEV-19299] ASAN: heap-use-after-free upon LEAST(..CHARSET(..),..) - Jira

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Type: Bug
Status: Confirmed (View Workflow)
Priority: Major
Resolution: Unresolved
Affects Version/s: 5.5, 10.0, 10.1, 10.2, 10.3, 10.4, 10.5
Fix Version/s: 10.4, 10.5
Component/s: OTHER
Labels:
None

Description

This issue was originally reported as a part of ~~MDEV-14041~~, but then moved into a separate issue.

CREATE TABLE t1 (a DATE, b TIME);

INSERT INTO t1 VALUES ('2014-04-07','11:35:28');

SELECT * FROM t1 GROUP BY GREATEST( TRIM(LEADING '02:18:28' FROM CHARSET(a)), UPPER(b) ) WITH ROLLUP;

DROP TABLE t1;

10.4 7b33a6a1 ASAN
==23264==ERROR: AddressSanitizer: heap-use-after-free on address 0x60d000047cc0 at pc 0x55df6365aa61 bp 0x7fda286d69f0 sp 0x7fda286d69e8
READ of size 1 at 0x60d000047cc0 thread T5
#0 0x55df6365aa60 in my_scan_weight_utf8_general_ci /data/src/10.4/strings/strcoll.ic:98
#1 0x55df6365b2d6 in my_strnncollsp_utf8_general_ci /data/src/10.4/strings/strcoll.ic:254
#2 0x55df61ead092 in sortcmp(String const, String const, charset_info_st const*) /data/src/10.4/sql/sql_string.cc:803
#3 0x55df6259794a in Item_func_min_max::val_str_native(String*) /data/src/10.4/sql/item_func.cc:2679
#4 0x55df62181568 in Type_handler_string_result::Item_func_min_max_val_str(Item_func_min_max, String) const /data/src/10.4/sql/sql_type.cc:5189
#5 0x55df62560ec4 in Item_func_min_max::val_str(String*) /data/src/10.4/sql/item_func.h:1798
#6 0x55df624ee7b6 in Cached_item_str::cmp() /data/src/10.4/sql/item_buff.cc:84
#7 0x55df61df3a0a in test_if_group_changed(List<Cached_item>&) /data/src/10.4/sql/sql_select.cc:24413
#8 0x55df61ddf82e in end_send_group(JOIN, st_join_table, bool) /data/src/10.4/sql/sql_select.cc:21403
#9 0x55df61dd2562 in do_select /data/src/10.4/sql/sql_select.cc:19513
#10 0x55df61d6be3c in JOIN::exec_inner() /data/src/10.4/sql/sql_select.cc:4371
#11 0x55df61d69737 in JOIN::exec() /data/src/10.4/sql/sql_select.cc:4153
#12 0x55df61d6d214 in mysql_select(THD, TABLE_LIST, unsigned int, List<Item>&, Item, unsigned int, st_order, st_order, Item, st_order, unsigned long long, select_result, st_select_lex_unit, st_select_lex) /data/src/10.4/sql/sql_select.cc:4585
#13 0x55df61d437fa in handle_select(THD, LEX, select_result*, unsigned long) /data/src/10.4/sql/sql_select.cc:424
#14 0x55df61cc4537 in execute_sqlcom_select /data/src/10.4/sql/sql_parse.cc:6652
#15 0x55df61cb10fe in mysql_execute_command(THD*) /data/src/10.4/sql/sql_parse.cc:3889
#16 0x55df61cccdda in mysql_parse(THD, char, unsigned int, Parser_state*, bool, bool) /data/src/10.4/sql/sql_parse.cc:8205
#17 0x55df61ca4ce5 in dispatch_command(enum_server_command, THD, char, unsigned int, bool, bool) /data/src/10.4/sql/sql_parse.cc:1829
#18 0x55df61ca1b36 in do_command(THD*) /data/src/10.4/sql/sql_parse.cc:1358
#19 0x55df620358a5 in do_handle_one_connection(CONNECT*) /data/src/10.4/sql/sql_connect.cc:1399
#20 0x55df6203529e in handle_one_connection /data/src/10.4/sql/sql_connect.cc:1302
#21 0x55df62bfcbe2 in pfs_spawn_thread /data/src/10.4/storage/perfschema/pfs.cc:1862
#22 0x7fda33a86493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)
#23 0x7fda31e6c93e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xe893e)

0x60d000047cc0 is located 112 bytes inside of 140-byte region [0x60d000047c50,0x60d000047cdc)
freed by thread T5 here:
#0 0x7fda33cf0527 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54527)
#1 0x55df635ae2e1 in free_memory /data/src/10.4/mysys/safemalloc.c:279
#2 0x55df635ad8e7 in sf_free /data/src/10.4/mysys/safemalloc.c:197
#3 0x55df6357e330 in my_free /data/src/10.4/mysys/my_malloc.c:222
#4 0x55df61a0f733 in Binary_string::free() /data/src/10.4/sql/sql_string.h:604
#5 0x55df61ea7d7a in Binary_string::real_alloc(unsigned long) /data/src/10.4/sql/sql_string.cc:43
#6 0x55df61a2f575 in Binary_string::alloc(unsigned long) /data/src/10.4/sql/sql_string.h:613
#7 0x55df624dfd8b in String::copy(charset_info_st const, charset_info_st const, char const, unsigned long, unsigned long, String_copier) /data/src/10.4/sql/sql_string.h:847
#8 0x55df624bb433 in String_copier_for_item::copy_with_warn(charset_info_st const, String, charset_info_st const, char const, unsigned int, unsigned int) /data/src/10.4/sql/item.cc:6214
#9 0x55df6261816c in Item_func_conv_charset::val_str(String*) /data/src/10.4/sql/item_strfunc.cc:3446
#10 0x55df625978fb in Item_func_min_max::val_str_native(String*) /data/src/10.4/sql/item_func.cc:2676
#11 0x55df62181568 in Type_handler_string_result::Item_func_min_max_val_str(Item_func_min_max, String) const /data/src/10.4/sql/sql_type.cc:5189
#12 0x55df62560ec4 in Item_func_min_max::val_str(String*) /data/src/10.4/sql/item_func.h:1798
#13 0x55df624ee7b6 in Cached_item_str::cmp() /data/src/10.4/sql/item_buff.cc:84
#14 0x55df61df3a0a in test_if_group_changed(List<Cached_item>&) /data/src/10.4/sql/sql_select.cc:24413
#15 0x55df61ddf82e in end_send_group(JOIN, st_join_table, bool) /data/src/10.4/sql/sql_select.cc:21403
#16 0x55df61dd2562 in do_select /data/src/10.4/sql/sql_select.cc:19513
#17 0x55df61d6be3c in JOIN::exec_inner() /data/src/10.4/sql/sql_select.cc:4371
#18 0x55df61d69737 in JOIN::exec() /data/src/10.4/sql/sql_select.cc:4153
#19 0x55df61d6d214 in mysql_select(THD, TABLE_LIST, unsigned int, List<Item>&, Item, unsigned int, st_order, st_order, Item, st_order, unsigned long long, select_result, st_select_lex_unit, st_select_lex) /data/src/10.4/sql/sql_select.cc:4585
#20 0x55df61d437fa in handle_select(THD, LEX, select_result*, unsigned long) /data/src/10.4/sql/sql_select.cc:424
#21 0x55df61cc4537 in execute_sqlcom_select /data/src/10.4/sql/sql_parse.cc:6652
#22 0x55df61cb10fe in mysql_execute_command(THD*) /data/src/10.4/sql/sql_parse.cc:3889
#23 0x55df61cccdda in mysql_parse(THD, char, unsigned int, Parser_state*, bool, bool) /data/src/10.4/sql/sql_parse.cc:8205
#24 0x55df61ca4ce5 in dispatch_command(enum_server_command, THD, char, unsigned int, bool, bool) /data/src/10.4/sql/sql_parse.cc:1829
#25 0x55df61ca1b36 in do_command(THD*) /data/src/10.4/sql/sql_parse.cc:1358
#26 0x55df620358a5 in do_handle_one_connection(CONNECT*) /data/src/10.4/sql/sql_connect.cc:1399
#27 0x55df6203529e in handle_one_connection /data/src/10.4/sql/sql_connect.cc:1302
#28 0x55df62bfcbe2 in pfs_spawn_thread /data/src/10.4/storage/perfschema/pfs.cc:1862
#29 0x7fda33a86493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)

previously allocated by thread T5 here:
#0 0x7fda33cf073f in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x5473f)
#1 0x55df635ad057 in sf_malloc /data/src/10.4/mysys/safemalloc.c:118
#2 0x55df6357d952 in my_malloc /data/src/10.4/mysys/my_malloc.c:101
#3 0x55df61ea7dd9 in Binary_string::real_alloc(unsigned long) /data/src/10.4/sql/sql_string.cc:46
#4 0x55df61a2f575 in Binary_string::alloc(unsigned long) /data/src/10.4/sql/sql_string.h:613
#5 0x55df61eaa299 in String::copy(char const, unsigned long, charset_info_st const, charset_info_st const, unsigned int) /data/src/10.4/sql/sql_string.cc:443
#6 0x55df626190de in Item_func_charset::val_str(String*) /data/src/10.4/sql/item_strfunc.cc:3513
#7 0x55df62608d13 in Item_func_ltrim::val_str(String*) /data/src/10.4/sql/item_strfunc.cc:1938
#8 0x55df62597791 in Item_func_min_max::val_str_native(String*) /data/src/10.4/sql/item_func.cc:2672
#9 0x55df62181568 in Type_handler_string_result::Item_func_min_max_val_str(Item_func_min_max, String) const /data/src/10.4/sql/sql_type.cc:5189
#10 0x55df62560ec4 in Item_func_min_max::val_str(String*) /data/src/10.4/sql/item_func.h:1798
#11 0x55df624ee7b6 in Cached_item_str::cmp() /data/src/10.4/sql/item_buff.cc:84
#12 0x55df61df3a0a in test_if_group_changed(List<Cached_item>&) /data/src/10.4/sql/sql_select.cc:24413
#13 0x55df61ddf82e in end_send_group(JOIN, st_join_table, bool) /data/src/10.4/sql/sql_select.cc:21403
#14 0x55df61dd2562 in do_select /data/src/10.4/sql/sql_select.cc:19513
#15 0x55df61d6be3c in JOIN::exec_inner() /data/src/10.4/sql/sql_select.cc:4371
#16 0x55df61d69737 in JOIN::exec() /data/src/10.4/sql/sql_select.cc:4153
#17 0x55df61d6d214 in mysql_select(THD, TABLE_LIST, unsigned int, List<Item>&, Item, unsigned int, st_order, st_order, Item, st_order, unsigned long long, select_result, st_select_lex_unit, st_select_lex) /data/src/10.4/sql/sql_select.cc:4585
#18 0x55df61d437fa in handle_select(THD, LEX, select_result*, unsigned long) /data/src/10.4/sql/sql_select.cc:424
#19 0x55df61cc4537 in execute_sqlcom_select /data/src/10.4/sql/sql_parse.cc:6652
#20 0x55df61cb10fe in mysql_execute_command(THD*) /data/src/10.4/sql/sql_parse.cc:3889
#21 0x55df61cccdda in mysql_parse(THD, char, unsigned int, Parser_state*, bool, bool) /data/src/10.4/sql/sql_parse.cc:8205
#22 0x55df61ca4ce5 in dispatch_command(enum_server_command, THD, char, unsigned int, bool, bool) /data/src/10.4/sql/sql_parse.cc:1829
#23 0x55df61ca1b36 in do_command(THD*) /data/src/10.4/sql/sql_parse.cc:1358
#24 0x55df620358a5 in do_handle_one_connection(CONNECT*) /data/src/10.4/sql/sql_connect.cc:1399
#25 0x55df6203529e in handle_one_connection /data/src/10.4/sql/sql_connect.cc:1302
#26 0x55df62bfcbe2 in pfs_spawn_thread /data/src/10.4/storage/perfschema/pfs.cc:1862
#27 0x7fda33a86493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)

Thread T5 created by T0 here:
#0 0x7fda33cbfbba in pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x23bba)
#1 0x55df62bfd1aa in spawn_thread_v1 /data/src/10.4/storage/perfschema/pfs.cc:1912
#2 0x55df619ec846 in inline_mysql_thread_create /data/src/10.4/include/mysql/psi/mysql_thread.h:1268
#7 0x55df61a01973 in mysqld_main(int, char**) /data/src/10.4/sql/mysqld.cc:5876
#8 0x55df619ea6cf in main /data/src/10.4/sql/main.cc:25
#9 0x7fda31da42b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)

SUMMARY: AddressSanitizer: heap-use-after-free /data/src/10.4/strings/strcoll.ic:98 my_scan_weight_utf8_general_ci
Shadow bytes around the buggy address:
0x0c1a80000f40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c1a80000f50: fa fa fa fa fa fa 00 00 00 00 00 00 00 00 00 00
0x0c1a80000f60: 00 00 00 00 00 00 04 fa fa fa fa fa fa fa fa fa
0x0c1a80000f70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1a80000f80: 04 fa fa fa fa fa fa fa fa fa fd fd fd fd fd fd
=>0x0c1a80000f90: fd fd fd fd fd fd fd fd[fd]fd fd fd fa fa fa fa
0x0c1a80000fa0: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1a80000fb0: 00 00 00 00 04 fa fa fa fa fa fa fa fa fa 00 00
0x0c1a80000fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04
0x0c1a80000fd0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c1a80000fe0: 00 00 00 00 00 00 00 00 00 04 fa fa fa fa fa fa

Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Contiguous container OOB:fc
ASan internal: fe
==23264==ABORTING

5.5 8024f8c6 ASAN
==24172==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c000012d60 at pc 0x1697c49 bp 0x7fa810ad8d30 sp 0x7fa810ad8d28
READ of size 1 at 0x60c000012d60 thread T5
#0 0x1697c48 in my_utf8_uni /data/src/5.5/strings/ctype-utf8.c:2316
#1 0x169b915 in my_strnncollsp_utf8 /data/src/5.5/strings/ctype-utf8.c:2761
#2 0x809302 in sortcmp(String const, String const, charset_info_st const*) /data/src/5.5/sql/sql_string.cc:736
#3 0xbc9d8a in Item_func_min_max::val_str(String*) /data/src/5.5/sql/item_func.cc:3000
#4 0xb387ac in Cached_item_str::cmp() /data/src/5.5/sql/item_buff.cc:83
#5 0x70ac75 in test_if_group_changed /data/src/5.5/sql/sql_select.cc:21404
#6 0x788554 in end_send_group(JOIN, st_join_table, bool) /data/src/5.5/sql/sql_select.cc:18401
#7 0x770d89 in do_select /data/src/5.5/sql/sql_select.cc:16742
#8 0x7b0f3d in JOIN::exec() /data/src/5.5/sql/sql_select.cc:2912
#9 0x79d8ac in mysql_select(THD, Item*, TABLE_LIST, unsigned int, List<Item>&, Item, unsigned int, st_order, st_order, Item, st_order, unsigned long long, select_result, st_select_lex_unit, st_select_lex) /data/src/5.5/sql/sql_select.cc:3133
#10 0x79df58 in handle_select(THD, LEX, select_result*, unsigned long) /data/src/5.5/sql/sql_select.cc:323
#11 0x690312 in execute_sqlcom_select /data/src/5.5/sql/sql_parse.cc:4679
#12 0x6a70bb in mysql_execute_command(THD*) /data/src/5.5/sql/sql_parse.cc:2225
#13 0x6bac31 in mysql_parse(THD, char, unsigned int, Parser_state*) /data/src/5.5/sql/sql_parse.cc:5924
#14 0x6be7ac in dispatch_command(enum_server_command, THD, char, unsigned int) /data/src/5.5/sql/sql_parse.cc:1067
#15 0x6c29f4 in do_command(THD*) /data/src/5.5/sql/sql_parse.cc:793
#16 0x91bf7a in do_handle_one_connection(THD*) /data/src/5.5/sql/sql_connect.cc:1268
#17 0x91c1eb in handle_one_connection /data/src/5.5/sql/sql_connect.cc:1184
#18 0x10ab47f in pfs_spawn_thread /data/src/5.5/storage/perfschema/pfs.cc:1015
freed by thread T5 here:
#0 0x7fa81878e527 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54527)
#1 0x1658faa in free_memory /data/src/5.5/mysys/safemalloc.c:205

previously allocated by thread T5 here:
#0 0x7fa81878e73f in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x5473f)
#1 0x165908f in sf_malloc /data/src/5.5/mysys/safemalloc.c:105

Thread T5 created by T0 here:
#0 0x7fa81875dbba in pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x23bba)
#1 0x10aeff4 in spawn_thread_v1 /data/src/5.5/storage/perfschema/pfs.cc:1038

SUMMARY: AddressSanitizer: heap-use-after-free /data/src/5.5/strings/ctype-utf8.c:2316 my_utf8_uni
Shadow bytes around the buggy address:
0x0c187fffa550: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fffa560: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fffa570: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fffa580: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fffa590: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c187fffa5a0: fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd fd fd
0x0c187fffa5b0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c187fffa5c0: 00 00 00 00 00 00 07 fa fa fa fa fa fa fa fa fa
0x0c187fffa5d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fa
0x0c187fffa5e0: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
0x0c187fffa5f0: fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Contiguous container OOB:fc
ASan internal: fe
==24172==ABORTING

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MDEV-14041 Server crashes in String::length on queries with functions and ROLLUP

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Assignee:: Alexander Barkov

Reporter:: Alexander Barkov

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 2019-04-22 09:39

Updated:: 2023-04-27 14:24

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