[CONC-518] mthd_my_real_connect() crashes on connection error - Jira

Details

Type: Bug
Status: Closed (View Workflow)
Priority: Critical
Resolution: Fixed
Affects Version/s: 3.1.9
Fix Version/s: 3.2.0, 3.1.12
Component/s: None
Labels:
- crash
Environment:
Microsoft Windows Server 2019 Standard

Description

Unhandled exception thrown: read access violation.

The crash happens here:
https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704

error:

  /* Free alloced memory */

  end_server(mysql);

  /* only free the allocated memory, user needs to call mysql_close */

  mysql_close_memory(mysql);

  if (!(client_flag & CLIENT_REMEMBER_OPTIONS) &&

      !mysql->options.extension->async_context)    <--- mysql->options.extension was nullptr

    mysql_close_options(mysql);

  return(0);

Call stack:

libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703]

libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330]

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Anton Serbulov created issue - 2020-11-27 06:37

Anton Serbulov made changes - 2020-11-27 06:41

Field	Original Value	New Value
Description	Unhandled exception thrown: read access violation. mysql->options.extension was nullptr The crash happens here: https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704 {noformat} error: /* Free alloced memory / end_server(mysql); / only free the allocated memory, user needs to call mysql_close */ mysql_close_memory(mysql); if (!(client_flag & CLIENT_REMEMBER_OPTIONS) && !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr mysql_close_options(mysql); return(0); {noformat} Call stack: {noformat} libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703] libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330] {noformat}	Unhandled exception thrown: read access violation. The crash happens here: https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704 {noformat} error: /* Free alloced memory / end_server(mysql); / only free the allocated memory, user needs to call mysql_close */ mysql_close_memory(mysql); if (!(client_flag & CLIENT_REMEMBER_OPTIONS) && !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr mysql_close_options(mysql); return(0); {noformat} Call stack: {noformat} libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703] libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330] {noformat}

Anton Serbulov made changes - 2020-11-27 06:41

Summary

mthd_my_real_connect crashes on connection error

mthd_my_real_connect() crashes on connection error

Anton Serbulov made changes - 2020-11-27 06:44

Description

Unhandled exception thrown: read access violation.

The crash happens here:
https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704

{noformat}
error:
  /* Free alloced memory */
  end_server(mysql);
  /* only free the allocated memory, user needs to call mysql_close */
  mysql_close_memory(mysql);
  if (!(client_flag & CLIENT_REMEMBER_OPTIONS) &&
      !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr
    mysql_close_options(mysql);
  return(0);
{noformat}

Call stack:
{noformat}
libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703]
libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330]
{noformat}

Unhandled exception thrown: read access violation.

The crash happens here:
https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704

{noformat}
{code:c}
error:
  /* Free alloced memory */
  end_server(mysql);
  /* only free the allocated memory, user needs to call mysql_close */
  mysql_close_memory(mysql);
  if (!(client_flag & CLIENT_REMEMBER_OPTIONS) &&
      !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr
    mysql_close_options(mysql);
  return(0);
{code}

Call stack:
{noformat}
libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703]
libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330]
{noformat}

Anton Serbulov made changes - 2020-11-27 06:44

Description

Unhandled exception thrown: read access violation.

The crash happens here:
https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704

{noformat}
{code:c}
error:
  /* Free alloced memory */
  end_server(mysql);
  /* only free the allocated memory, user needs to call mysql_close */
  mysql_close_memory(mysql);
  if (!(client_flag & CLIENT_REMEMBER_OPTIONS) &&
      !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr
    mysql_close_options(mysql);
  return(0);
{code}

Call stack:
{noformat}
libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703]
libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330]
{noformat}

Unhandled exception thrown: read access violation.

The crash happens here:
https://github.com/mariadb-corporation/mariadb-connector-c/blob/v3.1.9/libmariadb/mariadb_lib.c#L1704

{code:c}
error:
  /* Free alloced memory */
  end_server(mysql);
  /* only free the allocated memory, user needs to call mysql_close */
  mysql_close_memory(mysql);
  if (!(client_flag & CLIENT_REMEMBER_OPTIONS) &&
      !mysql->options.extension->async_context) <--- mysql->options.extension was nullptr
    mysql_close_options(mysql);
  return(0);
{code}

Call stack:
{noformat}
libmariadb!mthd_my_real_connect+0x858 [libmariadb\mariadb_lib.c @ 1703]
libmariadb!mysql_real_connect+0x24a [libmariadb\mariadb_lib.c @ 1330]
{noformat}

Georg Richter made changes - 2020-11-27 17:35

Fix Version/s		3.1.12 [ 25200 ]
Resolution		Fixed [ 1 ]
Status	Open [ 1 ]	Closed [ 6 ]

Ralf Gebhardt made changes - 2021-06-14 08:22

Fix Version/s

3.2.0 [ 25122 ]

Julien Fritsch made changes - 2022-01-11 15:33

Workflow

MariaDB connectors [ 116201 ]

MariaDB v4 [ 161234 ]

People

Assignee:: Georg Richter

Reporter:: Anton Serbulov

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 2020-11-27 06:37

Updated:: 2021-06-14 08:22

Resolved:: 2020-11-27 17:35

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