[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Changed in: ubuntu-z-systems Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
This bug was fixed in the package linux - 5.4.0-42.46 --- linux (5.4.0-42.46) focal; urgency=medium * focal/linux: 5.4.0-42.46 -proposed tracker (LP: #1887069) * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668) - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups" linux (5.4.0-41.45) focal; urgency=medium * focal/linux: 5.4.0-41.45 -proposed tracker (LP: #1885855) * Packaging resync (LP: #1786013) - update dkms package versions * CVE-2019-19642 - kernel/relay.c: handle alloc_percpu returning NULL in relay_open * CVE-2019-16089 - SAUCE: nbd_genl_status: null check for nla_nest_start * CVE-2020-11935 - aufs: do not call i_readcount_inc() * ip_defrag.sh in net from ubuntu_kernel_selftests failed with 5.0 / 5.3 / 5.4 kernel (LP: #1826848) - selftests: net: ip_defrag: ignore EPERM * Update lockdown patches (LP: #1884159) - SAUCE: acpi: disallow loading configfs acpi tables when locked down * seccomp_bpf fails on powerpc (LP: #1885757) - SAUCE: selftests/seccomp: fix ptrace tests on powerpc * Introduce the new NVIDIA 418-server and 440-server series, and update the current NVIDIA drivers (LP: #1881137) - [packaging] add signed modules for the 418-server and the 440-server flavours -- Khalid Elmously Thu, 09 Jul 2020 19:50:26 -0400 ** Changed in: linux (Ubuntu Groovy) Status: In Progress => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-16089 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-19642 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-11935 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
This bug was fixed in the package linux - 5.4.0-37.41 --- linux (5.4.0-37.41) focal; urgency=medium * CVE-2020-0543 - SAUCE: x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2 - SAUCE: x86/cpu: Add a steppings field to struct x86_cpu_id - SAUCE: x86/cpu: Add 'table' argument to cpu_matches() - SAUCE: x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation - SAUCE: x86/speculation: Add SRBDS vulnerability and mitigation documentation - SAUCE: x86/speculation: Add Ivy Bridge to affected list -- Marcelo Henrique Cerri Wed, 03 Jun 2020 11:24:23 -0300 ** Changed in: linux (Ubuntu Focal) Status: Fix Committed => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-0543 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
Hi Tuan, thx for re-verifying on short notice! ** Tags removed: verification-failed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
@Tuan, would you be able to verify this LP ticket again? The patch should be included in the kernel that is currently in proposed (the re-spin was done). Thx -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
@kernel-team and @ubuntu-archive just for clarification: the 'verification-failed-focal' tag was only set because the kernel in proposed that should have the patch that is mentioned here included, needed to be revoked due to a regression and the kernel used for the verification didn't had it in. So the verification was not possible, rather than failed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Tags removed: verification-needed-focal ** Tags added: verification-failed-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
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- 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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Changed in: linux (Ubuntu Focal) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Description changed: + SRU Justification: + == + + [Impact] + + * Unable to mount ceph volumes on big endian systems, like s390x. + + * The mount operation always fails with an IO error. + + * This is caused by an endiness issue in function handle_session where + variable features is always little endian. + + * But test_bit assumes the host order of bytes, hence causes a problem + on big endian systems. + + [Fix] + + * 0fa8263367db9287aa0632f96c1a5f93cc478150 0fa8263367db "ceph: fix + endianness bug when handling MDS session feature bits" + + [Test Case] + + * Setup ceph on s390x. + + * Try to mount a ceph volume. + + * If it mounts correctly the patch is applied and working. + + * Without the patch a mount always fails on big endian / s390x. + + [Regression Potential] + + * There is regression potential with having code changes in ceph's + session handler, which is common code. + + * However, the patch was accepted (slightly changed) by the ceph + maintainers and with that got upstream accepted, too. + + * The patch is fairly limited (5 lines removed, 3 added), hence the + changes are quite traceable. + + __ + When mounting a ceph volume, mount operation fails with an IO error. The problem is always reproducible. Identified potential root cause as kernel endian bug: In the function handle_session() variable @features always contains little endian order of bytes. Just because The feature mask sent by the MDS is little-endian (bits are packed bytewise from left to right in encode_supported_features()). However, test_bit(), called to check features availability, assumes the host order of bytes in that variable. This leads to problems on big endian architectures. Specifically it is impossible to mount ceph volume on s390. A fixup was proposed to convert little-endian order of bytes to the host one. That fixup was modified by ceph maintainers to use existing unpacking means for the conversion. The resulted patch attached. Related discussion in the ceph-development mailing list: https://marc.info/?l=ceph-devel=158815357301332=2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Also affects: linux (Ubuntu Groovy) Importance: High Assignee: Canonical Kernel Team (canonical-kernel-team) Status: Fix Committed ** Also affects: linux (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Groovy) Status: Fix Committed => In Progress ** Changed in: linux (Ubuntu Focal) Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Changed in: linux (Ubuntu) Status: In Progress => Fix Committed ** Changed in: ubuntu-z-systems Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
Kernel SRU request submitted: https://lists.ubuntu.com/archives/kernel-team/2020-May/thread.html#109710 Updating status to 'In Progress'. ** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: ubuntu-z-systems Status: Incomplete => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
Thanks Eduard, found it in linux-next, could cleanly cherry-pick and compile it. And it's coming just in time for the SRU cycle - perfect! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Changed in: ubuntu-z-systems Assignee: Ubuntu OpenStack (ubuntu-openstack) => Skipper Bug Screeners (skipper-screen-team) ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) ** No longer affects: ceph (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
Oh, just noticed that this is a kernel issue and fix. In this case we need of course an upstream accepted kernel patch. I didn't found anything like "ceph: fix up endian bug in managing feature bits" in linux-next yet. Is it available at some staging tree? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: ceph (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
Hi, was the attached patch already brought to upstream's attention? Please provide a github ticket (PR/issues) - so far I/we couldn't find one. Please notice that we want to avoid handling out-of-tree patches - thx. ** Changed in: ubuntu-z-systems Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1875863] Re: ceph -- Unable to mount ceph volume on s390x
** Also affects: ubuntu-z-systems Importance: Undecided Status: New ** Changed in: ubuntu-z-systems Importance: Undecided => High ** Changed in: ubuntu-z-systems Assignee: (unassigned) => Ubuntu OpenStack (ubuntu-openstack) ** Tags added: openstack-ibm -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875863 Title: ceph -- Unable to mount ceph volume on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1875863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
