Thank you for taking the time to report this bug and helping to make Ubuntu better. However, I am closing it because the bug seems to have been fixed in the latest development version of Ubuntu - Quantal Quetzal; I've tried with version 1.1.15-2 of jfsutils on dummy (sparse) files upto 9TB in size (the wonders of sparse files) and it seems fine.
However, if you can add some more detail about how you can repeat it then that would be useful - e.g. does it happen on any device or just a particular size/device? This is a significant bug in Ubuntu. If you need a fix for the bug in previous versions of Ubuntu, please do steps 1 and 2 of the SRU Procedure [1] to bring the need to a developer's attention. [1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/234225 Title: jfs_mkfs: double free or corruption To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jfsutils/+bug/234225/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs