Hi Sanja, the patch is OK to push. Thanks. On 04/23/2018 12:37 PM, Oleksandr Byelkin wrote:
revision-id: a20e1ce85ec56616fa048e9ba39c25c65b098fce (mariadb-10.3.6-36-ga20e1ce85ec) parent(s): c6ba758d1d41c11466b8f9b61b4546efc95aa689 author: Oleksandr Byelkin committer: Oleksandr Byelkin timestamp: 2018-04-23 10:35:33 +0200 message:
MDEV-13232: Assertion `(&(&share->intern_lock)->m_mutex)->count > 0 && pthread_equal(pthread_self(), (&(&share->intern_lock)->m_mutex)->thread)' failed in _ma_state_info_write
Limit length of result of "negative" operation to something reasonable
--- mysql-test/main/union.result | 14 ++++++++++++++ mysql-test/main/union.test | 15 +++++++++++++++ sql/item_func.cc | 3 +++ 3 files changed, 32 insertions(+)
diff --git a/mysql-test/main/union.result b/mysql-test/main/union.result index 4e5f9312e03..39cd68ae851 100644 --- a/mysql-test/main/union.result +++ b/mysql-test/main/union.result @@ -2500,5 +2500,19 @@ t2 CREATE TABLE `t2` ( DROP TABLE t2; DROP TABLE t1; # +# MDEV-13232: Assertion `(&(&share->intern_lock)->m_mutex)->count > 0 && +# pthread_equal(pthread_self(), (&(&share->intern_lock)->m_mutex)-> +# thread)' failed in _ma_state_info_write +# +CREATE TABLE t1 (c1 CHAR(8)); +INSERT INTO t1 VALUES ('10'),('-10'); +CREATE TABLE t2 (c2 CHAR); +SET @a= CAST('10' AS CHAR); +SELECT c1 FROM t1 UNION SELECT - @a FROM t2; +c1 +10 +-10 +drop table t1,t2; +# # End of 10.3 tests # diff --git a/mysql-test/main/union.test b/mysql-test/main/union.test index f86cae87524..b9b38271f83 100644 --- a/mysql-test/main/union.test +++ b/mysql-test/main/union.test @@ -1745,6 +1745,21 @@ SHOW CREATE TABLE t2; DROP TABLE t2; DROP TABLE t1;
+--echo # +--echo # MDEV-13232: Assertion `(&(&share->intern_lock)->m_mutex)->count > 0 && +--echo # pthread_equal(pthread_self(), (&(&share->intern_lock)->m_mutex)-> +--echo # thread)' failed in _ma_state_info_write +--echo # + +CREATE TABLE t1 (c1 CHAR(8)); +INSERT INTO t1 VALUES ('10'),('-10'); + +CREATE TABLE t2 (c2 CHAR); +SET @a= CAST('10' AS CHAR); + +SELECT c1 FROM t1 UNION SELECT - @a FROM t2; + +drop table t1,t2;
--echo # --echo # End of 10.3 tests diff --git a/sql/item_func.cc b/sql/item_func.cc index e2740272385..ae6c61e83f4 100644 --- a/sql/item_func.cc +++ b/sql/item_func.cc @@ -1935,6 +1935,9 @@ void Item_func_neg::fix_length_and_dec_double() set_handler(&type_handler_double); decimals= args[0]->decimals; // Preserve NOT_FIXED_DEC max_length= args[0]->max_length + 1; + // Limit length with something reasonable + uint32 mlen= type_handler()->max_display_length(this); + set_if_smaller(max_length, mlen); unsigned_flag= false; }
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