This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- disco' to 'verification-done-disco'. If the problem still exists, change the tag 'verification-needed-disco' to 'verification-failed-disco'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-disco -- 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/1832316 Title: shiftfs: allow changing ro/rw for subvolumes Status in linux package in Ubuntu: Fix Committed Status in linux source package in Disco: Fix Committed Bug description: SRU Justification Impact: Stéphane reported regression for btrfs workloads employing shiftfs. Unprivileged users can already toggle whether a subvolume will be ro or rw. This is broken on current shiftfs as we haven't whitelisted these ioctls(). Fix: To enable this with shiftfs we need to whitelist BTRFS_IOC_FS_INFO, BTRFS_IOC_SUBVOL_GETFLAGS, BTRFS_IOC_SUBVOL_SETFLAGS. All of them should be safe for unprivileged users. Regression Potential: Limited to shiftfs. Test Case: Tested with LXD running shiftfs on top of btrfs and verified btrfs subvolumes can be made ro or rw. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832316/+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
