Merge 10.1 into 10.2

11 files changed, 117 insertions, 130 deletions

diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index daff6a0e5ab..7d2b4b3b0a7 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -9062,10 +9062,6 @@ static void init_signal_handling(void)
   struct sigaction sa;
   DBUG_ENTER("init_signal_handling");
 
-#ifdef HAVE_STACKTRACE
-  my_init_stacktrace();
-#endif
-
   sa.sa_flags = SA_RESETHAND | SA_NODEFER;
   sigemptyset(&sa.sa_mask);
   sigprocmask(SIG_SETMASK, &sa.sa_mask, NULL);
diff --git a/include/my_stacktrace.h b/include/my_stacktrace.h
index 6aaf6728c72..6eb6359cf2d 100644
--- a/include/my_stacktrace.h
+++ b/include/my_stacktrace.h
@@ -43,7 +43,6 @@
 C_MODE_START
 
 #if defined(HAVE_STACKTRACE) || defined(HAVE_BACKTRACE)
-void my_init_stacktrace();
 void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack);
 int my_safe_print_str(const char* val, int max_len);
 void my_write_core(int sig);
@@ -53,8 +52,6 @@ char *my_demangle(const char *mangled_name, int *status);
 #ifdef __WIN__
 void my_set_exception_pointers(EXCEPTION_POINTERS *ep);
 #endif /* __WIN__ */
-#else
-#define my_init_stacktrace() do { } while(0)
 #endif /* ! (defined(HAVE_STACKTRACE) || defined(HAVE_BACKTRACE)) */
 
 #ifndef _WIN32
diff --git a/mysql-test/r/mysql_tzinfo_to_sql_symlink.result b/mysql-test/r/mysql_tzinfo_to_sql_symlink.result
index 06e21beace1..f56a2df2012 100644
--- a/mysql-test/r/mysql_tzinfo_to_sql_symlink.result
+++ b/mysql-test/r/mysql_tzinfo_to_sql_symlink.result
@@ -15,6 +15,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -32,6 +33,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/ignored.tab' as time zone. Skipping it.
 Warning: Skipping directory 'MYSQLTEST_VARDIR/zoneinfo/posix/posix': to avoid infinite symlink recursion.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 \d |
@@ -57,6 +59,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -71,6 +74,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
  (@time_zone_id, 0, 0, 0, 'GMT')
 ;
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 \d |
@@ -160,6 +164,8 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 \d |
diff --git a/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink.result b/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink.result
index 51c2e204b78..bcd96b86516 100644
--- a/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink.result
+++ b/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink.result
@@ -15,6 +15,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -32,6 +33,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/ignored.tab' as time zone. Skipping it.
 Warning: Skipping directory 'MYSQLTEST_VARDIR/zoneinfo/posix/posix': to avoid infinite symlink recursion.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 \d |
@@ -57,6 +59,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -71,6 +74,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
  (@time_zone_id, 0, 0, 0, 'GMT')
 ;
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 \d |
diff --git a/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink_skip.result b/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink_skip.result
index 85c4d858be2..aff02cb413e 100644
--- a/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink_skip.result
+++ b/mysql-test/suite/wsrep/r/mysql_tzinfo_to_sql_symlink_skip.result
@@ -9,6 +9,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -26,6 +27,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/ignored.tab' as time zone. Skipping it.
 Warning: Skipping directory 'MYSQLTEST_VARDIR/zoneinfo/posix/posix': to avoid infinite symlink recursion.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 # Silent run
@@ -36,6 +38,7 @@ TRUNCATE TABLE time_zone;
 TRUNCATE TABLE time_zone_name;
 TRUNCATE TABLE time_zone_transition;
 TRUNCATE TABLE time_zone_transition_type;
+START TRANSACTION;
 INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');
 SET @time_zone_id= LAST_INSERT_ID();
 INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('GMT', @time_zone_id);
@@ -50,6 +53,7 @@ INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset,
  (@time_zone_id, 0, 0, 0, 'GMT')
 ;
 Warning: Unable to load 'MYSQLTEST_VARDIR/zoneinfo/posix/garbage' as time zone. Skipping it.
+COMMIT;
 ALTER TABLE time_zone_transition ORDER BY Time_zone_id, Transition_time;
 ALTER TABLE time_zone_transition_type ORDER BY Time_zone_id, Transition_type_id;
 #
diff --git a/mysys/stacktrace.c b/mysys/stacktrace.c
index 1c6f9ea5f45..86cf272a437 100644
--- a/mysys/stacktrace.c
+++ b/mysys/stacktrace.c
@@ -34,108 +34,11 @@
 #include <execinfo.h>
 #endif
 
-#ifdef __linux__
-#define PTR_SANE(p) ((p) && (char*)(p) >= heap_start && (char*)(p) <= heap_end)
-static char *heap_start;
-char *__bss_start;
-#else
-#define PTR_SANE(p) (p)
-#endif /* __linux */
-
-
-void my_init_stacktrace()
-{
-#ifdef __linux__
-  heap_start = (char*) &__bss_start;
-#endif /* __linux */
-}
-
-#ifdef __linux__
-
-static void print_buffer(char *buffer, size_t count)
-{
-  const char s[]= " ";
-  for (; count && *buffer; --count)
-  {
-    my_write_stderr(isprint(*buffer) ? buffer : s, 1);
-    ++buffer;
-  }
-}
-
-/**
-  Access the pages of this process through /proc/self/task/<tid>/mem
-  in order to safely print the contents of a memory address range.
-
-  @param  addr      The address at the start of the memory region.
-  @param  max_len   The length of the memory region.
-
-  @return Zero on success.
-*/
-static int safe_print_str(const char *addr, int max_len)
-{
-  int fd;
-  pid_t tid;
-  off_t offset;
-  ssize_t nbytes= 0;
-  size_t total, count;
-  char buf[256];
-
-  tid= (pid_t) syscall(SYS_gettid);
-
-  sprintf(buf, "/proc/self/task/%d/mem", tid);
-
-  if ((fd= open(buf, O_RDONLY)) < 0)
-    return -1;
-
-  /* Ensure that off_t can hold a pointer. */
-  compile_time_assert(sizeof(off_t) >= sizeof(intptr));
-
-  total= max_len;
-  offset= (intptr) addr;
-
-  /* Read up to the maximum number of bytes. */
-  while (total)
-  {
-    count= MY_MIN(sizeof(buf), total);
-
-    if ((nbytes= pread(fd, buf, count, offset)) < 0)
-    {
-      /* Just in case... */
-      if (errno == EINTR)
-        continue;
-      else
-        break;
-    }
-
-    /* Advance offset into memory. */
-    total-= nbytes;
-    offset+= nbytes;
-    addr+= nbytes;
-
-    /* Output the printable characters. */
-    print_buffer(buf, nbytes);
-
-    /* Break if less than requested... */
-    if ((count - nbytes))
-      break;
-  }
-
-  if (nbytes == -1)
-    my_safe_printf_stderr("Can't read from address %p", addr);
-
-  close(fd);
-
-  return 0;
-}
-
-#endif
-
 /*
   Attempt to print a char * pointer as a string.
 
   SYNOPSIS
-    Prints either until the end of string ('\0'), or max_len characters have
-    been printed.
+    Prints until  max_len characters have been printed.
 
   RETURN VALUE
     0  Pointer was within the heap address space.
@@ -150,24 +53,25 @@ static int safe_print_str(const char *addr, int max_len)
 
 int my_safe_print_str(const char* val, int max_len)
 {
-#ifdef __linux__
-  char *heap_end;
-
-  // Try and make use of /proc filesystem to safely print memory contents.
-  if (!safe_print_str(val, max_len))
-    return 0;
-
-  heap_end= (char*) sbrk(0);
-#endif
-
-  if (!PTR_SANE(val))
+  const char *orig_val= val;
+  if (!val)
   {
-    my_safe_printf_stderr("%s", "is an invalid pointer");
+    my_safe_printf_stderr("%s", "(null)");
     return 1;
   }
 
-  for (; max_len && PTR_SANE(val) && *val; --max_len)
-    my_write_stderr((val++), 1);
+  for (; max_len; --max_len)
+  {
+    if (my_write_stderr((val++), 1) != 1)
+    {
+      if ((errno == EFAULT) &&(val == orig_val + 1))
+      {
+        // We can not read the address from very beginning
+        my_safe_printf_stderr("Can't access address %p", orig_val);
+      }
+      break;
+    }
+  }
   my_safe_printf_stderr("%s", "\n");
 
   return 0;
@@ -507,11 +411,6 @@ static EXCEPTION_POINTERS *exception_ptrs;
 #define MODULE64_SIZE_WINXP 576
 #define STACKWALK_MAX_FRAMES 64
 
-void my_init_stacktrace()
-{
-}
-
-
 void my_set_exception_pointers(EXCEPTION_POINTERS *ep)
 {
   exception_ptrs = ep;
diff --git a/scripts/mysqld_safe.sh b/scripts/mysqld_safe.sh
index 07fa304a4cf..ca49e1256f9 100644
--- a/scripts/mysqld_safe.sh
+++ b/scripts/mysqld_safe.sh
@@ -23,6 +23,7 @@ numa_interleave=0
 wsrep_on=0
 dry_run=0
 defaults_group_suffix=
+ignore_unknown=1
 
 # Initial logging status: error log is not open, and not using syslog
 logging=init
@@ -389,11 +390,22 @@ parse_arguments() {
 
       --help) usage ;;
 
+      --ignore-unknown) ignore_unknown=1 ;;
+      --no-ignore-unknown|--not-ignore-unknown) ignore_unknown=0 ;;
+
       *)
-        case "$unrecognized_handling" in
-          collect) append_arg_to_args "$arg" ;;
-          complain) log_error "unknown option '$arg'" ;;
-        esac
+        if test $ignore_unknown -eq 0
+        then
+          case "$unrecognized_handling" in
+            collect) append_arg_to_args "$arg" ;;
+            complain) log_error "unknown option '$arg'"
+          esac
+        else
+          case "$arg" in
+            "--loose-"*) append_arg_to_args "$arg" ;;
+            *)           append_arg_to_args "--loose-$arg"
+          esac
+        fi
     esac
   done
 }
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 5991ef5f7b0..a0379b0e2a3 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -3357,7 +3357,6 @@ void init_signals(void)
     sigemptyset(&sa.sa_mask);
     sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);
 
-    my_init_stacktrace();
 #if defined(__amiga__)
     sa.sa_handler=(void(*)())handle_fatal_signal;
 #else
diff --git a/sql/tztime.cc b/sql/tztime.cc
index 35e18f47629..067348dccab 100644
--- a/sql/tztime.cc
+++ b/sql/tztime.cc
@@ -2747,9 +2747,11 @@ main(int argc, char **argv)
     printf("TRUNCATE TABLE time_zone_name;\n");
     printf("TRUNCATE TABLE time_zone_transition;\n");
     printf("TRUNCATE TABLE time_zone_transition_type;\n");
+    printf("START TRANSACTION;\n");
 
     if (scan_tz_dir(root_name_end, 0, opt_verbose))
     {
+      printf("ROLLBACK;\n");
       fflush(stdout);
       fprintf(stderr,
               "There were fatal errors during processing "
@@ -2757,6 +2759,7 @@ main(int argc, char **argv)
       return 1;
     }
 
+    printf("COMMIT;\n");
     printf("ALTER TABLE time_zone_transition "
            "ORDER BY Time_zone_id, Transition_time;\n");
     printf("ALTER TABLE time_zone_transition_type "
diff --git a/unittest/mysys/CMakeLists.txt b/unittest/mysys/CMakeLists.txt
index ec4e0b91626..984b033e7aa 100644
--- a/unittest/mysys/CMakeLists.txt
+++ b/unittest/mysys/CMakeLists.txt
@@ -15,7 +15,7 @@
 
 MY_ADD_TESTS(bitmap base64 my_atomic my_rdtsc lf my_malloc my_getopt dynstring
              byte_order
-             queues LINK_LIBRARIES mysys)
+             queues stacktrace LINK_LIBRARIES mysys)
 MY_ADD_TESTS(my_vsnprintf LINK_LIBRARIES strings mysys)
 MY_ADD_TESTS(aes LINK_LIBRARIES  mysys mysys_ssl)
 ADD_DEFINITIONS(${SSL_DEFINES})
diff --git a/unittest/mysys/stacktrace-t.c b/unittest/mysys/stacktrace-t.c
new file mode 100644
index 00000000000..8fa0db15b36
--- /dev/null
+++ b/unittest/mysys/stacktrace-t.c
@@ -0,0 +1,67 @@
+
+/* Copyright (c) 2020, MariaDB Corporation.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1335  USA */
+
+#include <my_global.h>
+#include <my_sys.h>
+#include <stdio.h>
+#include <my_stacktrace.h>
+#include <tap.h>
+
+char b_bss[10];
+
+void test_my_safe_print_str()
+{
+  char b_stack[10];
+  char *b_heap= strdup("LEGAL");
+  memcpy(b_stack, "LEGAL", 6);
+  memcpy(b_bss, "LEGAL", 6);
+
+#ifndef __SANITIZE_ADDRESS__
+  fprintf(stderr, "\n===== stack =====\n");
+  my_safe_print_str(b_stack, 65535);
+  fprintf(stderr, "\n===== heap =====\n");
+  my_safe_print_str(b_heap, 65535);
+  fprintf(stderr, "\n===== BSS =====\n");
+  my_safe_print_str(b_bss, 65535);
+  fprintf(stderr, "\n===== data =====\n");
+  my_safe_print_str("LEGAL", 65535);
+  fprintf(stderr, "\n===== Above is a junk, but it is expected. =====\n");
+#endif /*__SANITIZE_ADDRESS__*/
+  fprintf(stderr, "\n===== Nornal length test =====\n");
+  my_safe_print_str("LEGAL", 5);
+  fprintf(stderr, "\n===== NULL =====\n");
+  my_safe_print_str(0, 5);
+#ifndef __SANITIZE_ADDRESS__
+  fprintf(stderr, "\n===== (const char*) 1 =====\n");
+  my_safe_print_str((const char*)1, 5);
+#endif /*__SANITIZE_ADDRESS__*/
+
+  free(b_heap);
+
+  ok(1, "test_my_safe_print_str");
+}
+
+
+int main(int argc __attribute__((unused)), char **argv)
+{
+  MY_INIT(argv[0]);
+  plan(1);
+
+  test_my_safe_print_str();
+
+  my_end(0);
+  return exit_status();
+}