Hello Andrew, or anyone else affected, Accepted zfs-linux into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/zfs- linux/0.8.3-1ubuntu12.14 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-focal. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: zfs-linux (Ubuntu Focal) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1946686 Title: Fix zfs_get_data access to files with wrong generation causing panics Status in zfs-linux package in Ubuntu: In Progress Status in zfs-linux source package in Focal: Fix Committed Status in zfs-linux source package in Hirsute: Fix Committed Status in zfs-linux source package in Impish: Fix Released Bug description: == SRU Focal/Hirsute == [Impact] ZFS: Fix a panic while acquiring a lock. If TX_WRITE is create on a file, and the file is later deleted and a new directory is created on the same object id, it is possible that when zil_commit happens, zfs_get_data will be called on the new directory. This may result in panic as it tries to do range lock. Upstream ZFS bug #10593, #11682, upstream fix: commit 296a4a369bc1078a694f88570972330985b3b1b8 Author: Chunwei Chen <tux...@gmail.com> Date: Fri Mar 19 22:53:31 2021 -0700 Fix zfs_get_data access to files with wrong generation This patch fixes this issue by record the generation number during zfs_log_write, so zfs_get_data can check if the object is valid. The fix is already in Ubuntu ZFS 2.0.6 in Impish. The fix is a relatively simple backport with only minor backporting effort required in moving some of the module specific upstream changes into the pre- renamed module specific os specific parts of the ZFS module. [Test Plan] This is difficult to reproduce, see https://github.com/openzfs/zfs/issues/10593 The fix has been tested with the complete ubuntu autotest ZFS regression tests that exercise ZFS core functionality (smoke tests), file system POSIX compliance (fs tests), extra XFS tests and every mount option with stress-ng file I/O stress tests. [Where problems could occur] This fix could regress the ZIL (ZFS intent log) commit writes since it modifies this code to now checks for generation numbers. Testing with ZFS autotests with intent logs have not found any regressions, but there is a risk that the ZIL functionality is affected. This could lead to corruption. ------ As mentioned at https://answers.launchpad.net/ubuntu/+source/zfs- linux/+question/696659, the following pull request fixes a panic acquiring a lock: https://github.com/openzfs/zfs/pull/11682 This fix does not appear to be a part of the latest Ubuntu 20.04 release: zfsutils-linux: Installed: 0.8.3-1ubuntu12.12 Candidate: 0.8.3-1ubuntu12.12 Version table: *** 0.8.3-1ubuntu12.12 500 500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 0.8.3-1ubuntu12.9 500 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 0.8.3-1ubuntu12 500 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages Of note is this issue where the bug is reported against the Ubuntu 0.8.3 packages: https://github.com/openzfs/zfs/issues/10642 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1946686/+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
