Cosmic update to v4.18.1 stable release
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Seth Forshee |
Bug Description
SRU Justification
Impact:
The upstream process for stable tree updates is quite similar
in scope to the Ubuntu SRU process, e.g., each patch has to
demonstrably fix a bug, and each patch is vetted by upstream
by originating either directly from a mainline/stable Linux tree or
a minimally backported form of that patch. The v4.18.1 upstream stable
patch set is now available. It should be included in the Ubuntu
kernel as well.
TEST CASE: TBD
The following patches from the v4.18.1 stable release shall be applied:
x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
x86/speculation: Protect against userspace-userspace spectreRSB
kprobes/x86: Fix %p uses in error messages
x86/irqflags: Provide a declaration for native_save_fl
x86/speculation
x86/speculation
x86/speculation
x86/speculation
x86/speculation
x86/speculation
x86/speculation
x86/speculation
x86/bugs: Move the l1tf function and define pr_fmt properly
sched/smt: Update sched_smt_present at runtime
x86/smp: Provide topology_
x86/topology: Provide topology_
cpu/hotplug: Make bringup/teardown of smp threads symmetric
cpu/hotplug: Split do_cpu_down()
cpu/hotplug: Provide knobs to control SMT
x86/cpu: Remove the pointless CPU printout
x86/cpu/AMD: Remove the pointless detect_ht() call
x86/cpu/common: Provide detect_ht_early()
x86/cpu/topology: Provide detect_
x86/cpu/intel: Evaluate smp_num_siblings early
x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info
x86/cpu/AMD: Evaluate smp_num_siblings early
x86/apic: Ignore secondary threads if nosmt=force
x86/speculation
x86/cpufeatures: Add detection of L1D cache flush support.
x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings
x86/speculation
x86/speculation
Revert "x86/apic: Ignore secondary threads if nosmt=force"
cpu/hotplug: Boot HT siblings at least once
x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present
x86/KVM/VMX: Add module argument for L1TF mitigation
x86/KVM/VMX: Add L1D flush algorithm
x86/KVM/VMX: Add L1D MSR based flush
x86/KVM/VMX: Add L1D flush logic
x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers
x86/KVM/VMX: Add find_msr() helper function
x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting
x86/KVM/VMX: Extend add_atomic_
x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required
cpu/hotplug: Online siblings when SMT control is turned on
x86/litf: Introduce vmx status variable
x86/kvm: Drop L1TF MSR list approach
x86/l1tf: Handle EPT disabled state proper
x86/kvm: Move l1tf setup function
x86/kvm: Add static key for flush always
x86/kvm: Serialize L1D flush parameter setter
x86/kvm: Allow runtime control of L1D flush
cpu/hotplug: Expose SMT control init function
cpu/hotplug: Set CPU_SMT_
x86/bugs, kvm: Introduce boot-time control of L1TF mitigations
Documentation: Add section about CPU vulnerabilities
x86/speculation
x86/KVM/VMX: Initialize the vmx_l1d_
Documentation/l1tf: Fix typos
cpu/hotplug: detect SMT disabled by BIOS
x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
x86/KVM/VMX: Replace 'vmx_l1d_
x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
x86/irq: Demote irq_cpustat_
x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
x86: Don't include linux/irq.h from asm/hardirq.h
x86/irq: Let interrupt handlers set kvm_cpu_
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_
Documentation/l1tf: Remove Yonah processors from not vulnerable list
x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
cpu/hotplug: Fix SMT supported evaluation
x86/speculation
x86/speculation
x86/mm/pat: Make set_memory_np() L1TF safe
x86/mm/kmmio: Make the tracer robust against L1TF
tools headers: Synchronise x86 cpufeatures.h for L1TF additions
x86/microcode: Allow late microcode loading with SMT disabled
x86/smp: fix non-SMP broken build due to redefinition of apic_id_
cpu/hotplug: Non-SMP machines do not make use of booted_once
x86/init: fix build with CONFIG_SWAP=n
Linux 4.18.1
tags: | added: kernel-stable-tracking-bug |
Changed in linux (Ubuntu): | |
assignee: | nobody → Seth Forshee (sforshee) |
importance: | Undecided → Medium |
status: | New → In Progress |
description: | updated |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
This bug was fixed in the package linux - 4.18.0-7.8
---------------
linux (4.18.0-7.8) cosmic; urgency=medium
* linux: 4.18.0-7.8 -proposed tracker (LP: #1789459)
* pmtu.sh fails on 4.18 kernel (LP: #1789436)
- SAUCE: Revert "vti6: fix PMTU caching and reporting on xmit"
-- Seth Forshee <email address hidden> Tue, 28 Aug 2018 11:08:51 -0500