[Bug 1972281] Re: ext4: limit length to bitmap_maxbytes

The task "linux (Ubuntu Trusty)" has expired because it has had no new comments or updates for more than three years. If this issue is still present in an Ubuntu LTS kernel still under active support, please reopen the bug and provide updated details. If this issue was reported against an Ubuntu kernel no longer under active support but the issue still exists in a currently supported Ubuntu kernel, please open a new bug against that kernel version and provide the updated details, with a reference link to the original bug. This action was performed by an automated process maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu Trusty) Status: In Progress => Expired -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/1972281 Title: ext4: limit length to bitmap_maxbytes Status in linux package in Ubuntu: Invalid Status in linux source package in Trusty: Expired Status in linux source package in Xenial: Expired Status in linux source package in Bionic: Fix Released Status in linux source package in Focal: Fix Released Status in linux source package in Impish: Fix Released Status in linux source package in Jammy: Fix Released Bug description: [Impact] Abusing ext4_fallocate() (as a normal user) triggers a BUG()/kernel panic. [Fix] Apply this upstream fix: commit 2da376228a2427501feb9d15815a45dbdbdd753e Author: Tadeusz Struk <tadeusz.struk@linaro.org> Date: Thu Mar 31 13:05:15 2022 -0700 ext4: limit length to bitmap_maxbytes - blocksize in punch_hole [Test] The reporter has provided a working reproducer. [Where problems could occur] Upstream fix already slated for @stable inclusion. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1972281/+subscriptions