This bug is awaiting verification that the linux/5.4.0-110.124 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-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
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-focal -- 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/1966803 Title: xfs: Fix deadlock between AGI and AGF when target_ip exists in xfs_rename() Status in linux package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Bug description: SRU Justification: [Impact] * The xfs filesystem suffers from a deadlock issue in kernels < 5.5. This hangs IO to/from the affected filesystem. Sample backtraces added as a comment. [Fix] * 93597ae8dac0149b5c00b787cba6bf7ba213e666 93597ae8dac0 "xfs: Fix deadlock between AGI and AGF when target_ip exists in xfs_rename()" * This is from the upstream 5.5 kernel. [Test Plan] * Set up an Ubuntu Bionic/Focal installation using kernel 5.4. * Create and mount an XFS filesystem on a block device. * Exercise the filesystem to verify that IO does not hang. [Where problems could occur] * This patch could cause locking issues on XFS filesystems, requiring a system restart to correct. [Other Info] * Bug is difficult to reproduce, a test kernel on affected systems with the above patch prevented the issue. * Backports to earlier (4.15 and earlier) kernels have been omitted as the upstream patch does not apply cleanly and the issue has not been reproduced on them. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1966803/+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
