Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.0 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc5-vivid/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: kernel-da-key utopic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1437414 Title: kernel unable to unmount loopbacks & leaks them Status in linux package in Ubuntu: Incomplete Bug description: run the attached script which: - creates a disk image - creates an ext2 fs in the middle of it - mounts that ext2 fs via loopback - deploys & runs some code in that mount - tries to unmount it the kernel ends up saying the mount is busy (it's not) and it's not possible to detach the loopback (probably because even with a lazy unmount, the kernel holds references to it) this is the utopic kernel 3.16.0-33 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1437414/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp