This bug is awaiting verification that the linux-nvidia/5.15.0-1006.6 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-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.
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! -- 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/1983640 Title: refactoring of overlayfs fix to properly support shiftfs Status in linux package in Ubuntu: Fix Committed Status in linux-hwe-5.17 package in Ubuntu: Invalid Status in linux source package in Jammy: Fix Committed Status in linux-hwe-5.17 source package in Jammy: Fix Committed Status in linux source package in Kinetic: Fix Committed Status in linux-hwe-5.17 source package in Kinetic: Invalid Bug description: [Impact] Starting with 5.13 we've incorrectly dropped the following sauce patch: UBUNTU: SAUCE: overlayfs: fix incorrect mnt_id of files opened from map_files This patch is required to use overlayfs on top of shiftfs and without this patch we may break containers that rely on shiftfs (using zfs/ceph as storage pool w/ shiftfs enabled). However, we made this patch dependent on AUFS, starting with Jammy we're not enabling AUFS anymore, so this fix becomes a no-op. So we need to re-introduce this fix with a bit of refactoring to not depend on AUFS. [Test case] The following script can be used to trigger the issue: #!/bin/bash cat > test.py << EOF import sys f = open("/proc/self/maps") for l in f.readlines(): if "python" not in l: continue print(l) s = l.split() start, end = s[0].split("-") fname = s[-1] print(start, end, fname) break else: sys.exit(1) test_file1 = open(fname) test_file2 = open("/proc/self/map_files/%s-%s" % (start, end)) fdinfo1 = open("/proc/self/fdinfo/%d" % test_file1.fileno()).read() fdinfo2 = open("/proc/self/fdinfo/%d" % test_file2.fileno()).read() if fdinfo1 != fdinfo2: print("FAIL") print(test_file1) print(fdinfo1) print(test_file2) print(fdinfo2) sys.exit(1) print("PASS") EOF sudo docker run -it --privileged --rm -v `pwd`:/mnt python python /mnt/test.py [Fix] Import the right pieces from AUFS to properly support the fix and get rid of the AUFS dependency across all our kernels and re-apply the overlayfs fix without the AUFS dependency. [Regression potential] This patch is touching overlayfs, so we may see potential regressions in overlayfs, especially when containers are used. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1983640/+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
