diff --git a/mysql-test/r/loaddata.result b/mysql-test/r/loaddata.result
index 1c59f41cfc0..78d169230a3 100644
--- a/mysql-test/r/loaddata.result
+++ b/mysql-test/r/loaddata.result
@@ -532,4 +532,11 @@ a
 0
 1
 DROP TABLE t1;
+#
+# Bug#11765139  58069: LOAD DATA INFILE: VALGRIND REPORTS INVALID MEMORY READS AND WRITES WITH U
+#
+CREATE TABLE t1(f1 INT);
+SELECT 0xE1BB30 INTO OUTFILE 't1.dat';
+LOAD DATA INFILE 't1.dat' IGNORE INTO TABLE t1 CHARACTER SET utf8;
+DROP TABLE t1;
 End of 5.1 tests
diff --git a/mysql-test/t/loaddata.test b/mysql-test/t/loaddata.test
index 06054d1990d..8e5cba01d28 100644
--- a/mysql-test/t/loaddata.test
+++ b/mysql-test/t/loaddata.test
@@ -601,5 +601,18 @@ DROP TABLE t1;
 let $MYSQLD_DATADIR= `select @@datadir`;
 remove_file $MYSQLD_DATADIR/test/tmpp2.txt;
 
+--echo #
+--echo # Bug#11765139  58069: LOAD DATA INFILE: VALGRIND REPORTS INVALID MEMORY READS AND WRITES WITH U
+--echo #
+
+CREATE TABLE t1(f1 INT);
+EVAL SELECT 0xE1BB30 INTO OUTFILE 't1.dat';
+--disable_warnings
+LOAD DATA INFILE 't1.dat' IGNORE INTO TABLE t1 CHARACTER SET utf8;
+--enable_warnings
+
+DROP TABLE t1;
+let $MYSQLD_DATADIR= `select @@datadir`;
+remove_file $MYSQLD_DATADIR/test/t1.dat;
 
 --echo End of 5.1 tests
diff --git a/sql/sql_load.cc b/sql/sql_load.cc
index a2d443fbbc8..0589488d850 100644
--- a/sql/sql_load.cc
+++ b/sql/sql_load.cc
@@ -1337,7 +1337,7 @@ READ_INFO::READ_INFO(File file_par, uint tot_length, CHARSET_INFO *cs,
 
 
   /* Set of a stack for unget if long terminators */
-  uint length=max(field_term_length,line_term_length)+1;
+  uint length= max(cs->mbmaxlen, max(field_term_length, line_term_length)) + 1;
   set_if_bigger(length,line_start.length());
   stack=stack_pos=(int*) sql_alloc(sizeof(int)*length);