Performing verification for Bionic. I installed php7.2 and php7.2-mysql from -updates, version 7.4.3-4ubuntu2.5.
I also installed mysql and set up the database table and inserted data into it. $ sudo apt-cache policy php7.2 | grep Installed Installed: 7.2.24-0ubuntu0.18.04.8 $ cat testcase.php <?php $dbConn= new mysqli("127.0.0.1", "ubuntu", "ubuntu", "ubuntu_releases", "3306"); $SQL="SELECT * from ubuntu_releases"; $stmt=$dbConn->prepare($SQL); $stmt->attr_set(MYSQLI_STMT_ATTR_CURSOR_TYPE, MYSQLI_CURSOR_TYPE_READ_ONLY); $stmt->execute(); if ($stmt) { $res = $stmt->get_result(); while($row = $res->fetch_assoc()) { echo json_encode($row) . "\n"; } } $dbConn->close() ?> $ php testcase.php Segmentation fault (core dumped) $ tail /var/log/kern.log Sep 1 03:33:13 ubuntu kernel: [ 843.642697] do_general_protection: 5 callbacks suppressed Sep 1 03:33:13 ubuntu kernel: [ 843.642705] traps: php[10167] general protection ip:7f9256b72f90 sp:7ffc6b263670 error:0 in mysqlnd.so[7f9256b4a000+38000] We segfault trying to use the mysqli cursor. I then enabled -proposed, and installed php7.2 version 7.2.24-0ubuntu0.18.04.9. $ sudo apt-cache policy php7.2 | grep Installed Installed: 7.2.24-0ubuntu0.18.04.9 $ php testcase.php {"year":21,"month":4,"name":"hirsute"} {"year":20,"month":10,"name":"groovy"} {"year":20,"month":4,"name":"focal"} We no longer segfault, and we can read rows from the mysqli cursor correctly. The fixed package in -proposed solves the issue. Happy to mark Bionic as verified. ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939853 Title: mysqli: Using a cursor with get_result() and prepared statements causes a segmentation fault To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php7.2/+bug/1939853/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs