Commit 5d023fa5 authored by unknown's avatar unknown
Browse files

Fix possible race. Use LOCK_grant on access to grant_version. 


sql/sql_acl.cc:
  Use LOCK_grant on access to grant_version.
parent afe2520e

sql/sql_acl.cc

+3 −2
Original line number Diff line number Diff line
@@ -6009,20 +6009,21 @@ void fill_effective_table_privileges(THD *thd, GRANT_INFO *grant, 
  }



  /* table privileges */

  rw_rdlock(&LOCK_grant);

  if (grant->version != grant_version)

  {

    rw_rdlock(&LOCK_grant);

    grant->grant_table=

      table_hash_search(sctx->host, sctx->ip, db,

			sctx->priv_user,

			table, 0);              /* purecov: inspected */

    grant->version= grant_version;              /* purecov: inspected */

    rw_unlock(&LOCK_grant);

  }

  if (grant->grant_table != 0)

  {

    grant->privilege|= grant->grant_table->privs;

  }

  rw_unlock(&LOCK_grant);



  DBUG_PRINT("info", ("privilege 0x%lx", grant->privilege));

  DBUG_VOID_RETURN;

}