Unbreakable Enterprise kernel security update

[4.1.12-112.14.10]

• x86/ia32: save and clear registers on syscall. (Jamie Iles) [Orabug: 27355759] {CVE-2017-5754}
• x86/IBRS: Save current status of MSR_IA32_SPEC_CTRL (Boris Ostrovsky) [Orabug: 27355887]
• pti: Rename X86_FEATURE_KAISER to X86_FEATURE_PTI (Pavel Tatashin) [Orabug: 27352353] {CVE-2017-5754}
• usb/core: usb_alloc_dev(): fix setting of ->portnum (Nicolai Stange) [Orabug: 27356522]
• x86/spec_ctrl: Add missing IBRS_DISABLE (Konrad Rzeszutek Wilk)
• Make use of ibrs_inuse consistent. (Jun Nakajima)
  [4.1.12-112.14.8]
• x86/kvm: Set IBRS on VMEXIT if guest disabled it. (Konrad Rzeszutek Wilk)
  [4.1.12-112.14.7]
• Re-introduce clearing of r12-15, rbp, rbx (Kris Van Hees) [Orabug: 27352353] {CVE-2017-5754}
• x86: more ibrs/pti fixes (Pavel Tatashin) [Orabug: 27352353] {CVE-2017-5754}
• x86/spec: Actually do the check for in_use on ENABLE_IBRS (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• kvm: svm: Expose the CPUID.0x80000008 ebx flag. (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• x86/spec_ctrl: Provide the sysfs version of the ibrs_enabled (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• x86: Use better #define for FEATURE_ENABLE_IBRS and 0 (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• x86: Instead of 0x2, 0x4, and 0x1 use #defines. (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• kpti: Disable when running under Xen PV (Konrad Rzeszutek Wilk) [Orabug: 27352353] {CVE-2017-5754}
• x86: Don’t ENABLE_IBRS in nmi when we are still running on user cr3 (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• x86/enter: Use IBRS on syscall and interrupts - fix ia32 path (Konrad Rzeszutek Wilk) {CVE-2017-5715}
• x86: Fix spectre/kpti integration (Konrad Rzeszutek Wilk) [Orabug: 27352353] {CVE-2017-5754}
• PTI: unbreak EFI old_memmap (Jiri Kosina) [Orabug: 27352353] {CVE-2017-5754}
• KAISER KABI tweaks. (Martin K. Petersen) [Orabug: 27352353] {CVE-2017-5754}
• x86/ldt: fix crash in ldt freeing. (Jamie Iles) [Orabug: 27352353] {CVE-2017-5754}
• x86/entry: Define ‘cpu_current_top_of_stack’ for 64-bit code (Denys Vlasenko) [Orabug: 27352353] {CVE-2017-5754}
• x86/entry: Remove unused ‘kernel_stack’ per-cpu variable (Denys Vlasenko) [Orabug: 27352353] {CVE-2017-5754}
• x86/entry: Stop using PER_CPU_VAR(kernel_stack) (Denys Vlasenko) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: Set _PAGE_NX only if supported (Guenter Roeck) [Orabug: 27352353] {CVE-2017-5754}
• x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• KPTI: Report when enabled (Kees Cook) [Orabug: 27352353] {CVE-2017-5754}
• KPTI: Rename to PAGE_TABLE_ISOLATION (Kees Cook) [Orabug: 27352353] {CVE-2017-5754}
• x86/kaiser: Move feature detection up (Borislav Petkov) [Orabug: 27352353] {CVE-2017-5754}
• x86/kaiser: Reenable PARAVIRT (Borislav Petkov) [Orabug: 27352353] {CVE-2017-5754}
• x86/paravirt: Dont patch flush_tlb_single (Thomas Gleixner) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: kaiser_flush_tlb_on_return_to_user() check PCID (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: asm/tlbflush.h handle noPGE at lower level (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: drop is_atomic arg to kaiser_pagetable_walk() (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: use ALTERNATIVE instead of x86_cr3_pcid_noflush (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• x86/kaiser: Check boottime cmdline params (Borislav Petkov) [Orabug: 27352353] {CVE-2017-5754}
• x86/kaiser: Rename and simplify X86_FEATURE_KAISER handling (Borislav Petkov) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: add ‘nokaiser’ boot option, using ALTERNATIVE (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: fix unlikely error in alloc_ldt_struct() (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: _pgd_alloc() without __GFP_REPEAT to avoid stalls (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: paranoid_entry pass cr3 need to paranoid_exit (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: x86_cr3_pcid_noflush and x86_cr3_pcid_user (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: PCID 0 for kernel and 128 for user (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: load_new_mm_cr3() let SWITCH_USER_CR3 flush user (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: enhanced by kernel and user PCIDs (Dave Hansen) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: vmstat show NR_KAISERTABLE as nr_overhead (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: delete KAISER_REAL_SWITCH option (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: name that 0x1000 KAISER_SHADOW_PGD_OFFSET (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: cleanups while trying for gold link (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: kaiser_remove_mapping() move along the pgd (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: tidied up kaiser_add/remove_mapping slightly (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: tidied up asm/kaiser.h somewhat (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: ENOMEM if kaiser_pagetable_walk() NULL (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: fix perf crashes (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: fix regs to do_nmi() ifndef CONFIG_KAISER (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: KAISER depends on SMP (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: fix build and FIXME in alloc_ldt_struct() (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: stack map PAGE_SIZE at THREAD_SIZE-PAGE_SIZE (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: do not set _PAGE_NX on pgd_none (Hugh Dickins) [Orabug: 27352353] {CVE-2017-5754}
• kaiser: merged update (Dave Hansen) [Orabug: 27352353] {CVE-2017-5754}
• KAISER: Kernel Address Isolation (Richard Fellner) [Orabug: 27352353] {CVE-2017-5754}
• x86/boot: Add early cmdline parsing for options with arguments (Tom Lendacky) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm/64: Fix reboot interaction with CR4.PCIDE (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Enable CR4.PCIDE on supported systems (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Add the ‘nopcid’ boot option to turn off PCID (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Disable PCID on 32-bit kernels (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Make flush_tlb_mm_range() more predictable (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Remove flush_tlb() and flush_tlb_current_task() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/irq: Do not substract irq_tlb_count from irq_call_count (Aaron Lu) [Orabug: 27352353] {CVE-2017-5754}
• sched/core: Idle_task_exit() shouldn’t use switch_mm_irqs_off() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• ARM: Hide finish_arch_post_lock_switch() from modules (Steven Rostedt) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm, sched/core: Turn off IRQs in switch_mm() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm, sched/core: Uninline switch_mm() (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Build arch/x86/mm/tlb.c even on !SMP (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• sched/core: Add switch_mm_irqs_off() and use it in the scheduler (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• mm/mmu_context, sched/core: Fix mmu_context.h assumption (Ingo Molnar) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: If INVPCID is available, use it to flush global mappings (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Add a ‘noinvpcid’ boot option to turn off INVPCID (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Fix INVPCID asm constraint (Borislav Petkov) [Orabug: 27352353] {CVE-2017-5754}
• x86/mm: Add INVPCID helpers (Andy Lutomirski) [Orabug: 27352353] {CVE-2017-5754}