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- cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag 'verification-needed-cosmic' to 'verification-failed- cosmic'.
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-cosmic -- 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/1807686 Title: efi-lockdown patch causes -EPERM for some debugfs files even though CONFIG_LOCK_DOWN_KERNEL is not set Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Committed Status in linux source package in Cosmic: Fix Committed Status in linux source package in Disco: Fix Committed Bug description: == Comment: #0 - Dominik Klein <dominik.kl...@de.ibm.com> - 2018-12-10 03:58:10 == There seems to be a bug in the efi-lockdown patch as applied on top of vanilla for Cosmic kernels: http://kernel.ubuntu.com/git/ubuntu/ubuntu-cosmic.git/commit/fs/debugfs/file.c?id=a1ba65da9ceae481c154bfd1a2c1550e4566d986 Also seems to be present for Disco as of today: http://kernel.ubuntu.com/git/ubuntu/ubuntu-disco.git/commit/fs/debugfs/file.c?id=a1ba65da9ceae481c154bfd1a2c1550e4566d986 The problem is that part of the patch modifies kernel behavior independently of CONFIG_LOCK_DOWN_KERNEL being set or not causing issues on two debugfs files on s390x. Vasily Gorbik has already analyzed the problem and has posted a proposed fix here: https://lkml.org/lkml/2018/11/21/634 https://lkml.org/lkml/2018/11/21/635 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1807686/+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
