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2016-08-20parisc: Fix order of EREFUSED define in errno.hHelge Deller1-2/+2
When building gccgo in userspace, errno.h gets parsed and the go include file sysinfo.go is generated. Since EREFUSED is defined to the same value as ECONNREFUSED, and ECONNREFUSED is defined later on in errno.h, this leads to go complaining that EREFUSED isn't defined yet. Fix this trivial problem by moving the define of EREFUSED down after ECONNREFUSED in errno.h (and clean up the indenting while touching this line). Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org
2016-08-20parisc: Fix automatic selection of cr16 clocksourceHelge Deller2-20/+0
Commit 54b66800907 (parisc: Add native high-resolution sched_clock() implementation) added support to use the CPU-internal cr16 counters as reliable clocksource with the help of HAVE_UNSTABLE_SCHED_CLOCK. Sadly the commit missed to remove the hack which prevented cr16 to become the default clocksource even on SMP systems. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # 4.7+
2016-08-18Merge tag 'devicetree-fixes-for-4.8' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: - a couple of DT node ref counting fixes - fix __unflatten_device_tree for PPC PCI hotplug case - rework marking irq controllers as OF_POPULATED in cases where real driver is used. - disable of_platform_default_populate_init on PPC. The change in initcall order causes problems which need to be sorted out later. * tag 'devicetree-fixes-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: fix reference counting in of_graph_get_endpoint_by_regs of/platform: disable the of_platform_default_populate_init() for all the ppc boards ARM: imx6: mark GPC node as not populated after irq init to probe pm domain driver of/irq: Mark interrupt controllers as populated before initialisation drivers/of: Validate device node in __unflatten_device_tree() of: Delete an unnecessary check before the function call "of_node_put"
2016-08-18Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2-10/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "An initrd microcode loading fix, and an SMP bootup topology setup fix to resolve crashes on SGI/UV systems if the BIOS is configured in a certain way" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/smp: Fix __max_logical_packages value setup x86/microcode/AMD: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y
2016-08-18Merge tag 'arm64-fixes' of ↵Linus Torvalds3-4/+14
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - Avoid a literal load with the MMU off on the CPU resume path (potential inconsistency between cache and RAM) - Build error with CONFIG_ACPI=n fixed - Compiler warning in the arch/arm64/mm/dump.c code fixed * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix shift warning in arch/arm64/mm/dump.c arm64: kernel: avoid literal load of virtual address with MMU off arm64: Fix NUMA build error when !CONFIG_ACPI
2016-08-18Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2-5/+17
Pull ARM fixes from Russell King: "Only three fixes this time: - Emil found an overflow problem with the memory layout sanity check. - Ard Biesheuvel noticed that late-allocated page tables (for EFI) weren't being properly constructed. - Guenter Roeck reported a problem found on qemu caused by the recent addr_limit changes" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: fix address limit restoration for undefined instructions ARM: 8591/1: mm: use fully constructed struct pages for EFI pgd allocations ARM: 8590/1: sanity_check_meminfo(): avoid overflow on vmalloc_limit
2016-08-18Merge tag 'pm-4.8-rc3' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: "More hibernation-related material: one fix for a recent regression in the core, one small cleanup of the x86-64 resume code and a documentation update. Specifics: - Fix a hibernate core regression resulting from uncovering a latent bug in its implementation of memory bitmaps by a recent commit (James Morse). - Use __pa() to compute a physical address in the x86-64 code finalizing resume from hibernation (Rafael Wysocki). - Update power management documentation related to system sleep states to remove outdated information from it and to add a description of a recently introduced hibernation debug feature to it (Rafael Wysocki)" * tag 'pm-4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / hibernate: Fix rtree_next_node() to avoid walking off list ends x86/power/64: Use __pa() for physical address computation PM / sleep: Update some system sleep documentation
2016-08-18arm64: Fix shift warning in arch/arm64/mm/dump.cCatalin Marinas1-3/+3
When building with 48-bit VAs and 16K page configuration, it's possible to get the following warning when building the arm64 page table dumping code: arch/arm64/mm/dump.c: In function ‘walk_pud’: arch/arm64/mm/dump.c:274:102: warning: right shift count >= width of type [-Wshift-count-overflow] This is because pud_offset(pgd, 0) performs a shift to the right by 36 while the value 0 has the type 'int' by default, therefore 32-bit. This patch modifies all the p*_offset() uses in arch/arm64/mm/dump.c to use 0UL for the address argument. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-18x86/smp: Fix __max_logical_packages value setupJiri Olsa1-9/+16
Frank reported kernel panic when he disabled several cores in BIOS via following option: Core Disable Bitmap(Hex) [0] with number 0xFFE, which leaves 16 CPUs in system (out of 48). The kernel panic below goes along with following messages: smpboot: Max logical packages: 2^M smpboot: APIC(0) Converting physical 0 to logical package 0^M smpboot: APIC(20) Converting physical 1 to logical package 1^M smpboot: APIC(40) Package 2 exceeds logical package map^M smpboot: CPU 8 APICId 40 disabled^M smpboot: APIC(60) Package 3 exceeds logical package map^M smpboot: CPU 12 APICId 60 disabled^M ... general protection fault: 0000 [#1] SMP^M Modules linked in:^M CPU: 15 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc5+ #1^M Hardware name: SGI UV300/UV300, BIOS SGI UV 300 series BIOS 05/25/2016^M task: ffff8801673e0000 ti: ffff8801673ac000 task.ti: ffff8801673ac000^M RIP: 0010:[<ffffffff81014d54>] [<ffffffff81014d54>] uncore_change_context+0xd4/0x180^M ... [<ffffffff810158ac>] uncore_event_init_cpu+0x6c/0x70^M [<ffffffff81d8c91c>] intel_uncore_init+0x1c2/0x2dd^M [<ffffffff81d8c75a>] ? uncore_cpu_setup+0x17/0x17^M [<ffffffff81002190>] do_one_initcall+0x50/0x190^M [<ffffffff810ab193>] ? parse_args+0x293/0x480^M [<ffffffff81d87365>] kernel_init_freeable+0x1a5/0x249^M [<ffffffff81d86a35>] ? set_debug_rodata+0x12/0x12^M [<ffffffff816dc19e>] kernel_init+0xe/0x110^M [<ffffffff816e93bf>] ret_from_fork+0x1f/0x40^M [<ffffffff816dc190>] ? rest_init+0x80/0x80^M The reason for the panic is wrong value of __max_logical_packages, which lets logical_package_map uninitialized and the uncore code relying on this map being properly initialized (maybe we should add some safety checks there as well). The __max_logical_packages is computed as: DIV_ROUND_UP(total_cpus, ncpus); - ncpus being number of cores With above BIOS setup we get total_cpus == 16 which set __max_logical_packages to 2 (ncpus is 12). Once topology_update_package_map processes CPU with logical pkg over 2 we display above messages and fail to initialize the physical_to_logical_pkg map, which makes the uncore code crash. The fix is to remove logical_package_map bitmap completely and keep and update the logical_packages number instead. After we enumerate all the present CPUs, we check if the enumerated logical packages count is within its computed maximum from BIOS data. If it's not the case, we set this maximum to the new enumerated value and freeze any new addition of logical packages. The freeze is because lot of init code like uncore/rapl/cqm depends on having maximum logical package value set to allocate their data, so we can't change it later on. Prarit Bhargava tested the patch and confirms that it solves the problem: From dmidecode: Core Count: 24 Core Enabled: 24 Thread Count: 48 Orig kernel boot log: [ 0.464981] smpboot: Max logical packages: 19 [ 0.469861] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.477261] smpboot: APIC(40) Converting physical 1 to logical package 1 [ 0.484760] smpboot: APIC(80) Converting physical 2 to logical package 2 [ 0.492258] smpboot: APIC(c0) Converting physical 3 to logical package 3 1. nr_cpus=8, should stop enumerating in package 0: [ 0.533664] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.539596] smpboot: Max logical packages: 19 2. max_cpus=8, should still enumerate all packages: [ 0.526494] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.532428] smpboot: APIC(40) Converting physical 1 to logical package 1 [ 0.538456] smpboot: APIC(80) Converting physical 2 to logical package 2 [ 0.544486] smpboot: APIC(c0) Converting physical 3 to logical package 3 [ 0.550524] smpboot: Max logical packages: 19 3. nr_cpus=49 ( 2 socket + 1 core on 3rd socket), should stop enumerating in package 2: [ 0.521378] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.527314] smpboot: APIC(40) Converting physical 1 to logical package 1 [ 0.533345] smpboot: APIC(80) Converting physical 2 to logical package 2 [ 0.539368] smpboot: Max logical packages: 19 4. maxcpus=49, should still enumerate all packages: [ 0.525591] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.531525] smpboot: APIC(40) Converting physical 1 to logical package 1 [ 0.537547] smpboot: APIC(80) Converting physical 2 to logical package 2 [ 0.543579] smpboot: APIC(c0) Converting physical 3 to logical package 3 [ 0.549624] smpboot: Max logical packages: 19 5. kdump (nr_cpus=1) works as well. Reported-by: Frank Ramsay <framsay@redhat.com> Tested-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Reviewed-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160815101700.GA30090@krava Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-18x86/microcode/AMD: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=yBorislav Petkov1-1/+8
Similar to: efaad554b4ff ("x86/microcode/intel: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y") ... fix microcode loading from the initrd on AMD by adding the randomization offset to the microcode patch container within the initrd. Reported-and-tested-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-tip-commits@vger.kernel.org Link: http://lkml.kernel.org/r/20160817113314.GA19221@nazgul.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-18Merge branch 'pm-sleep'Rafael J. Wysocki1-1/+1
* pm-sleep: PM / hibernate: Fix rtree_next_node() to avoid walking off list ends x86/power/64: Use __pa() for physical address computation PM / sleep: Update some system sleep documentation
2016-08-17arm64: kernel: avoid literal load of virtual address with MMU offArd Biesheuvel1-1/+9
Literal loads of virtual addresses are subject to runtime relocation when CONFIG_RELOCATABLE=y, and given that the relocation routines run with the MMU and caches enabled, literal loads of relocated values performed with the MMU off are not guaranteed to return the latest value unless the memory covering the literal is cleaned to the PoC explicitly. So defer the literal load until after the MMU has been enabled, just like we do for primary_switch() and secondary_switch() in head.S. Fixes: 1e48ef7fcc37 ("arm64: add support for building vmlinux as a relocatable PIE binary") Cc: <stable@vger.kernel.org> # 4.6+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-17arm64: Fix NUMA build error when !CONFIG_ACPICatalin Marinas1-0/+2
Since asm/acpi.h is only included by linux/acpi.h when CONFIG_ACPI is enabled, disabling the latter leads to the following build error on arm64: arch/arm64/mm/numa.c: In function ‘arm64_numa_init’: arch/arm64/mm/numa.c:395:24: error: ‘arm64_acpi_numa_init’ undeclared (first use in this function) if (!acpi_disabled && !numa_init(arm64_acpi_numa_init)) This patch include the asm/acpi.h explicitly in arch/arm64/mm/numa.c for the arm64_acpi_numa_init() definition. Fixes: d8b47fca8c23 ("arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT") Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-16Merge branch 'for-linus' of ↵Linus Torvalds9-20/+27
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "A couple of bug fixes, minor cleanup and a change to the default config" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/dasd: fix failing CUIR assignment under LPAR s390/pageattr: handle numpages parameter correctly s390/dasd: fix hanging device after clear subchannel s390/qdio: avoid reschedule of outbound tasklet once killed s390/qdio: remove checks for ccw device internal state s390/qdio: fix double return code evaluation s390/qdio: get rid of spin_lock_irqsave usage s390/cio: remove subchannel_id from ccw_device_private s390/qdio: obtain subchannel_id via ccw_device_get_schid() s390/cio: stop using subchannel_id from ccw_device_private s390/config: make the vector optimized crc function builtin s390/lib: fix memcmp and strstr s390/crc32-vx: Fix checksum calculation for small sizes s390: clarify compressed image code path
2016-08-16x86/power/64: Use __pa() for physical address computationRafael J. Wysocki1-1/+1
The value of temp_level4_pgt is the physical address of the top-level page directory, so use __pa() to compute it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Ingo Molnar <mingo@kernel.org>
2016-08-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68knommu fix from Greg Ungerer: "This contains only a single fix for a register corruption problem on certain types of m68k flat format binaries" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: fix user a5 register being overwritten
2016-08-13Merge tag 'fixes-for-linus-4.8' of ↵Linus Torvalds2-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull h8300 and unicore32 architecture fixes from Guenter Roeck: "Two patches to fix h8300 and unicore32 builds. unicore32 builds have been broken since v4.6. The fix has been available in -next since March of this year. h8300 builds have been broken since the last commit window. The fix has been available in -next since June of this year" * tag 'fixes-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: h8300: Add missing include file to asm/io.h unicore32: mm: Add missing parameter to arch_vma_access_permitted
2016-08-13Merge tag 'arm64-fixes' of ↵Linus Torvalds7-74/+123
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - support for nr_cpus= command line argument (maxcpus was previously changed to allow secondary CPUs to be hot-plugged) - ARM PMU interrupt handling fix - fix potential TLB conflict in the hibernate code - improved handling of EL1 instruction aborts (better error reporting) - removal of useless jprobes code for stack saving/restoring - defconfig updates * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: defconfig: enable CONFIG_LOCALVERSION_AUTO arm64: defconfig: add options for virtualization and containers arm64: hibernate: handle allocation failures arm64: hibernate: avoid potential TLB conflict arm64: Handle el1 synchronous instruction aborts cleanly arm64: Remove stack duplicating code from jprobes drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property drivers/perf: arm-pmu: convert arm_pmu_mutex to spinlock arm64: Support hard limit of cpu count by nr_cpus
2016-08-13Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds5-39/+87
Pull KVM fixes from Radim Krčmář: "KVM: - lock kvm_device list to prevent corruption on device creation. PPC: - split debugfs initialization from creation of the xics device to unlock the newly taken kvm lock earlier. s390: - prevent userspace from triggering two WARN_ON_ONCE. MIPS: - fix several issues in the management of TLB faults (Cc: stable)" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: MIPS: KVM: Propagate kseg0/mapped tlb fault errors MIPS: KVM: Fix gfn range check in kseg0 tlb faults MIPS: KVM: Add missing gfn range check MIPS: KVM: Fix mapped fault broken commpage handling KVM: Protect device ops->create and list_add with kvm->lock KVM: PPC: Move xics_debugfs_init out of create KVM: s390: reset KVM_REQ_MMU_RELOAD if mapping the prefix failed KVM: s390: set the prefix initially properly
2016-08-13h8300: Add missing include file to asm/io.hGuenter Roeck1-0/+2
h8300 builds fail with arch/h8300/include/asm/io.h:9:15: error: unknown type name ‘u8’ arch/h8300/include/asm/io.h:15:15: error: unknown type name ‘u16’ arch/h8300/include/asm/io.h:21:15: error: unknown type name ‘u32’ and many related errors. Fixes: 23c82d41bdf4 ("kexec-allow-architectures-to-override-boot-mapping-fix") Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-08-13unicore32: mm: Add missing parameter to arch_vma_access_permittedGuenter Roeck1-1/+1
unicore32 fails to compile with the following errors. mm/memory.c: In function ‘__handle_mm_fault’: mm/memory.c:3381: error: too many arguments to function ‘arch_vma_access_permitted’ mm/gup.c: In function ‘check_vma_flags’: mm/gup.c:456: error: too many arguments to function ‘arch_vma_access_permitted’ mm/gup.c: In function ‘vma_permits_fault’: mm/gup.c:640: error: too many arguments to function ‘arch_vma_access_permitted’ Fixes: d61172b4b695b ("mm/core, x86/mm/pkeys: Differentiate instruction fetches") Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2016-08-12Merge tag 'pm-4.8-rc2' of ↵Linus Torvalds3-11/+14
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: "Two hibernation fixes allowing it to work with the recently added randomization of the kernel identity mapping base on x86-64 and one cpufreq driver regression fix. Specifics: - Fix the x86 identity mapping creation helpers to avoid the assumption that the base address of the mapping will always be aligned at the PGD level, as it may be aligned at the PUD level if address space randomization is enabled (Rafael Wysocki). - Fix the hibernation core to avoid executing tracing functions before restoring the processor state completely during resume (Thomas Garnier). - Fix a recently introduced regression in the powernv cpufreq driver that causes it to crash due to an out-of-bounds array access (Akshay Adiga)" * tag 'pm-4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / hibernate: Restore processor state before using per-CPU variables x86/power/64: Always create temporary identity mapping correctly cpufreq: powernv: Fix crash in gpstate_timer_handler()
2016-08-12Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds20-195/+182
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "This is bigger than usual - the reason is partly a pent-up stream of fixes after the merge window and partly accidental. The fixes are: - five patches to fix a boot failure on Andy Lutomirsky's laptop - four SGI UV platform fixes - KASAN fix - warning fix - documentation update - swap entry definition fix - pkeys fix - irq stats fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic/x2apic, smp/hotplug: Don't use before alloc in x2apic_cluster_probe() x86/efi: Allocate a trampoline if needed in efi_free_boot_services() x86/boot: Rework reserve_real_mode() to allow multiple tries x86/boot: Defer setup_real_mode() to early_initcall time x86/boot: Synchronize trampoline_cr4_features and mmu_cr4_features directly x86/boot: Run reserve_bios_regions() after we initialize the memory map x86/irq: Do not substract irq_tlb_count from irq_call_count x86/mm: Fix swap entry comment and macro x86/mm/kaslr: Fix -Wformat-security warning x86/mm/pkeys: Fix compact mode by removing protection keys' XSAVE buffer manipulation x86/build: Reduce the W=1 warnings noise when compiling x86 syscall tables x86/platform/UV: Fix kernel panic running RHEL kdump kernel on UV systems x86/platform/UV: Fix problem with UV4 BIOS providing incorrect PXM values x86/platform/UV: Fix bug with iounmap() of the UV4 EFI System Table causing a crash x86/platform/UV: Fix problem with UV4 Socket IDs not being contiguous x86/entry: Clarify the RF saving/restoring situation with SYSCALL/SYSRET x86/mm: Disable preemption during CR3 read+write x86/mm/KASLR: Increase BRK pages for KASLR memory randomization x86/mm/KASLR: Fix physical memory calculation on KASLR memory randomization x86, kasan, ftrace: Put APIC interrupt handlers into .irqentry.text
2016-08-12Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds4-3/+33
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Ingo Molnar: "Misc fixes: a /dev/rtc regression fix, two APIC timer period calibration fixes, an ARM clocksource driver fix and a NOHZ power use regression fix" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hpet: Fix /dev/rtc breakage caused by RTC cleanup x86/timers/apic: Inform TSC deadline clockevent device about recalibration x86/timers/apic: Fix imprecise timer interrupts by eliminating TSC clockevents frequency roundoff error timers: Fix get_next_timer_interrupt() computation clocksource/arm_arch_timer: Force per-CPU interrupt to be level-triggered
2016-08-12Merge branches 'pm-sleep' and 'pm-cpufreq'Rafael J. Wysocki3-11/+14
* pm-sleep: PM / hibernate: Restore processor state before using per-CPU variables x86/power/64: Always create temporary identity mapping correctly * pm-cpufreq: cpufreq: powernv: Fix crash in gpstate_timer_handler()
2016-08-12Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds3-16/+30
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, plus two uncore-PMU fixes, an uprobes fix, a perf-cgroups fix and an AUX events fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel/uncore: Add enable_box for client MSR uncore perf/x86/intel/uncore: Fix uncore num_counters uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions perf/core: Set cgroup in CPU contexts for new cgroup events perf/core: Fix sideband list-iteration vs. event ordering NULL pointer deference crash perf probe ppc64le: Fix probe location when using DWARF perf probe: Add function to post process kernel trace events tools: Sync cpufeatures headers with the kernel toops: Sync tools/include/uapi/linux/bpf.h with the kernel tools: Sync cpufeatures.h and vmx.h with the kernel perf probe: Support signedness casting perf stat: Avoid skew when reading events perf probe: Fix module name matching perf probe: Adjust map->reloc offset when finding kernel symbol from map perf hists: Trim libtraceevent trace_seq buffers perf script: Add 'bpf-output' field to usage message
2016-08-12Merge branch 'efi-urgent-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI fixes from Ingo Molnar: "A fix for EFI capsules and an SGI UV platform fix" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/capsule: Allocate whole capsule into virtual memory x86/platform/uv: Skip UV runtime services mapping in the efi_runtime_disabled case
2016-08-12Merge tag 'powerpc-4.8-3' of ↵Linus Torvalds31-135/+227
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "Some powerpc fixes for 4.8: Misc: - powerpc/vdso: Fix build rules to rebuild vdsos correctly from Nicholas Piggin - powerpc/ptrace: Fix coredump since ptrace TM changes from Cyril Bur - powerpc/32: Fix csum_partial_copy_generic() from Christophe Leroy - cxl: Set psl_fir_cntl to production environment value from Frederic Barrat - powerpc/eeh: Switch to conventional PCI address output in EEH log from Guilherme G. Piccoli - cxl: Use fixed width predefined types in data structure. from Philippe Bergheaud - powerpc/vdso: Add missing include file from Guenter Roeck - powerpc: Fix unused function warning 'lmb_to_memblock' from Alastair D'Silva - powerpc/powernv/ioda: Fix TCE invalidate to work in real mode again from Alexey Kardashevskiy - powerpc/cell: Add missing error code in spufs_mkgang() from Dan Carpenter - crypto: crc32c-vpmsum - Convert to CPU feature based module autoloading from Anton Blanchard - powerpc/pasemi: Fix coherent_dma_mask for dma engine from Darren Stevens Benjamin Herrenschmidt: - powerpc/32: Fix crash during static key init - powerpc: Update obsolete comment in setup_32.c about early_init() - powerpc: Print the kernel load address at the end of prom_init() - powerpc/pnv/pci: Fix incorrect PE reservation attempt on some 64-bit BARs - powerpc/xics: Properly set Edge/Level type and enable resend Mahesh Salgaonkar: - powerpc/book3s: Fix MCE console messages for unrecoverable MCE. - powerpc/powernv: Fix MCE handler to avoid trashing CR0/CR1 registers. - powerpc/powernv: Move IDLE_STATE_ENTER_SEQ macro to cpuidle.h - powerpc/powernv: Load correct TOC pointer while waking up from winkle. Andrew Donnellan: - cxl: Fix sparse warnings - cxl: Fix NULL dereference in cxl_context_init() on PowerVM guests Michael Ellerman: - selftests/powerpc: Specify we expect to build with std=gnu99 - powerpc/Makefile: Use cflags-y/aflags-y for setting endian options - powerpc/pci: Fix endian bug in fixed PHB numbering" * tag 'powerpc-4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (26 commits) selftests/powerpc: Specify we expect to build with std=gnu99 powerpc/vdso: Fix build rules to rebuild vdsos correctly powerpc/Makefile: Use cflags-y/aflags-y for setting endian options powerpc/32: Fix crash during static key init powerpc: Update obsolete comment in setup_32.c about early_init() powerpc: Print the kernel load address at the end of prom_init() powerpc/ptrace: Fix coredump since ptrace TM changes powerpc/32: Fix csum_partial_copy_generic() cxl: Set psl_fir_cntl to production environment value powerpc/pnv/pci: Fix incorrect PE reservation attempt on some 64-bit BARs powerpc/book3s: Fix MCE console messages for unrecoverable MCE. powerpc/pci: Fix endian bug in fixed PHB numbering powerpc/eeh: Switch to conventional PCI address output in EEH log cxl: Fix sparse warnings cxl: Fix NULL dereference in cxl_context_init() on PowerVM guests cxl: Use fixed width predefined types in data structure. powerpc/vdso: Add missing include file powerpc: Fix unused function warning 'lmb_to_memblock' powerpc/powernv: Fix MCE handler to avoid trashing CR0/CR1 registers. powerpc/powernv: Move IDLE_STATE_ENTER_SEQ macro to cpuidle.h ...
2016-08-12arm64: defconfig: enable CONFIG_LOCALVERSION_AUTOMasahiro Yamada1-1/+0
When CONFIG_LOCALVERSION_AUTO is disabled, the version string is just a tag name (or with a '+' appended if HEAD is not a tagged commit). During the development (and especially when git-bisecting), longer version string would be helpful to identify the commit we are running. This is a default y option, so drop the unset to enable it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-12arm64: defconfig: add options for virtualization and containersRiku Voipio1-6/+46
Enable options commonly needed by popular virtualization and container applications. Use modules when possible to avoid too much overhead for users not interested. - add namespace and cgroup options needed - add seccomp - optional, but enhances Qemu etc - bridge, nat, veth, macvtap and multicast for routing guests and containers - btfrs and overlayfs modules for container COW backends - while near it, make fuse a module instead of built-in. Generated with make saveconfig and dropping unrelated spurious change hunks while commiting. bloat-o-meter old-vmlinux vmlinux: add/remove: 905/390 grow/shrink: 767/229 up/down: 183513/-94861 (88652) .... Total: Before=10515408, After=10604060, chg +0.84% Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-12arm64: hibernate: handle allocation failuresMark Rutland1-27/+32
In create_safe_exec_page(), we create a copy of the hibernate exit text, along with some page tables to map this via TTBR0. We then install the new tables in TTBR0. In swsusp_arch_resume() we call create_safe_exec_page() before trying a number of operations which may fail (e.g. copying the linear map page tables). If these fail, we bail out of swsusp_arch_resume() and return an error code, but leave TTBR0 as-is. Subsequently, the core hibernate code will call free_basic_memory_bitmaps(), which will free all of the memory allocations we made, including the page tables installed in TTBR0. Thus, we may have TTBR0 pointing at dangling freed memory for some period of time. If the hibernate attempt was triggered by a user requesting a hibernate test via the reboot syscall, we may return to userspace with the clobbered TTBR0 value. Avoid these issues by reorganising swsusp_arch_resume() such that we have no failure paths after create_safe_exec_page(). We also add a check that the zero page allocation succeeded, matching what we have for other allocations. Fixes: 82869ac57b5d ("arm64: kernel: Add support for hibernate/suspend-to-disk") Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: James Morse <james.morse@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> # 4.7+ Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-12arm64: hibernate: avoid potential TLB conflictMark Rutland1-6/+17
In create_safe_exec_page we install a set of global mappings in TTBR0, then subsequently invalidate TLBs. While TTBR0 points at the zero page, and the TLBs should be free of stale global entries, we may have stale ASID-tagged entries (e.g. from the EFI runtime services mappings) for the same VAs. Per the ARM ARM these ASID-tagged entries may conflict with newly-allocated global entries, and we must follow a Break-Before-Make approach to avoid issues resulting from this. This patch reworks create_safe_exec_page to invalidate TLBs while the zero page is still in place, ensuring that there are no potential conflicts when the new TTBR0 value is installed. As a single CPU is online while this code executes, we do not need to perform broadcast TLB maintenance, and can call local_flush_tlb_all(), which also subsumes some barriers. The remaining assembly is converted to use write_sysreg() and isb(). Other than this, we safely manipulate TTBRs in the hibernate dance. The code we install as part of the new TTBR0 mapping (the hibernated kernel's swsusp_arch_suspend_exit) installs a zero page into TTBR1, invalidates TLBs, then installs its preferred value. Upon being restored to the middle of swsusp_arch_suspend, the new image will call __cpu_suspend_exit, which will call cpu_uninstall_idmap, installing the zero page in TTBR0 and invalidating all TLB entries. Fixes: 82869ac57b5d ("arm64: kernel: Add support for hibernate/suspend-to-disk") Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: James Morse <james.morse@arm.com> Tested-by: James Morse <james.morse@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> # 4.7+ Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-12arm64: Handle el1 synchronous instruction aborts cleanlyLaura Abbott2-2/+19
Executing from a non-executable area gives an ugly message: lkdtm: Performing direct entry EXEC_RODATA lkdtm: attempting ok execution at ffff0000084c0e08 lkdtm: attempting bad execution at ffff000008880700 Bad mode in Synchronous Abort handler detected on CPU2, code 0x8400000e -- IABT (current EL) CPU: 2 PID: 998 Comm: sh Not tainted 4.7.0-rc2+ #13 Hardware name: linux,dummy-virt (DT) task: ffff800077e35780 ti: ffff800077970000 task.ti: ffff800077970000 PC is at lkdtm_rodata_do_nothing+0x0/0x8 LR is at execute_location+0x74/0x88 The 'IABT (current EL)' indicates the error but it's a bit cryptic without knowledge of the ARM ARM. There is also no indication of the specific address which triggered the fault. The increase in kernel page permissions makes hitting this case more likely as well. Handling the case in the vectors gives a much more familiar looking error message: lkdtm: Performing direct entry EXEC_RODATA lkdtm: attempting ok execution at ffff0000084c0840 lkdtm: attempting bad execution at ffff000008880680 Unable to handle kernel paging request at virtual address ffff000008880680 pgd = ffff8000089b2000 [ffff000008880680] *pgd=00000000489b4003, *pud=0000000048904003, *pmd=0000000000000000 Internal error: Oops: 8400000e [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 997 Comm: sh Not tainted 4.7.0-rc1+ #24 Hardware name: linux,dummy-virt (DT) task: ffff800077f9f080 ti: ffff800008a1c000 task.ti: ffff800008a1c000 PC is at lkdtm_rodata_do_nothing+0x0/0x8 LR is at execute_location+0x74/0x88 Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-12Merge tag 'kvm-s390-master-4.8-1' of ↵Radim Krčmář1-1/+4
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux KVM: s390: Fixes for 4.8 (via kvm/master) Here are two fixes found by fuzzing of the ioctl interface. Both cases can trigger a WARN_ON_ONCE from user space.
2016-08-12MIPS: KVM: Propagate kseg0/mapped tlb fault errorsJames Hogan2-12/+35
Propagate errors from kvm_mips_handle_kseg0_tlb_fault() and kvm_mips_handle_mapped_seg_tlb_fault(), usually triggering an internal error since they normally indicate the guest accessed bad physical memory or the commpage in an unexpected way. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Fixes: e685c689f3a8 ("KVM/MIPS32: Privileged instruction/target branch emulation.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # 3.10.x- Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12MIPS: KVM: Fix gfn range check in kseg0 tlb faultsJames Hogan1-1/+1
Two consecutive gfns are loaded into host TLB, so ensure the range check isn't off by one if guest_pmap_npages is odd. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # 3.10.x- Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12MIPS: KVM: Add missing gfn range checkJames Hogan1-8/+15
kvm_mips_handle_mapped_seg_tlb_fault() calculates the guest frame number based on the guest TLB EntryLo values, however it is not range checked to ensure it lies within the guest_pmap. If the physical memory the guest refers to is out of range then dump the guest TLB and emit an internal error. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # 3.10.x- Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12MIPS: KVM: Fix mapped fault broken commpage handlingJames Hogan1-21/+28
kvm_mips_handle_mapped_seg_tlb_fault() appears to map the guest page at virtual address 0 to PFN 0 if the guest has created its own mapping there. The intention is unclear, but it may have been an attempt to protect the zero page from being mapped to anything but the comm page in code paths you wouldn't expect from genuine commpage accesses (guest kernel mode cache instructions on that address, hitting trapping instructions when executing from that address with a coincidental TLB eviction during the KVM handling, and guest user mode accesses to that address). Fix this to check for mappings exactly at KVM_GUEST_COMMPAGE_ADDR (it may not be at address 0 since commit 42aa12e74e91 ("MIPS: KVM: Move commpage so 0x0 is unmapped")), and set the corresponding EntryLo to be interpreted as 0 (invalid). Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # 3.10.x- Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12KVM: Protect device ops->create and list_add with kvm->lockChristoffer Dall2-3/+5
KVM devices were manipulating list data structures without any form of synchronization, and some implementations of the create operations also suffered from a lack of synchronization. Now when we've split the xics create operation into create and init, we can hold the kvm->lock mutex while calling the create operation and when manipulating the devices list. The error path in the generic code gets slightly ugly because we have to take the mutex again and delete the device from the list, but holding the mutex during anon_inode_getfd or releasing/locking the mutex in the common non-error path seemed wrong. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12KVM: PPC: Move xics_debugfs_init out of createChristoffer Dall1-2/+8
As we are about to hold the kvm->lock during the create operation on KVM devices, we should move the call to xics_debugfs_init into its own function, since holding a mutex over extended amounts of time might not be a good idea. Introduce an init operation on the kvm_device_ops struct which cannot fail and call this, if configured, after the device has been created. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-08-12KVM: s390: reset KVM_REQ_MMU_RELOAD if mapping the prefix failedJulius Niedworok1-1/+3
When triggering KVM_RUN without a user memory region being mapped (KVM_SET_USER_MEMORY_REGION) a validity intercept occurs. This could happen, if the user memory region was not mapped initially or if it was unmapped after the vcpu is initialized. The function kvm_s390_handle_requests checks for the KVM_REQ_MMU_RELOAD bit. The check function always clears this bit. If gmap_mprotect_notify returns an error code, the mapping failed, but the KVM_REQ_MMU_RELOAD was not set anymore. So the next time kvm_s390_handle_requests is called, the execution would fall trough the check for KVM_REQ_MMU_RELOAD. The bit needs to be resetted, if gmap_mprotect_notify returns an error code. Resetting the bit with kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu) fixes the bug. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Julius Niedworok <jniedwor@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-08-12KVM: s390: set the prefix initially properlyJulius Niedworok1-0/+1
When KVM_RUN is triggered on a VCPU without an initial reset, a validity intercept occurs. Setting the prefix will set the KVM_REQ_MMU_RELOAD bit initially, thus preventing the bug. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Julius Niedworok <jniedwor@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-08-12perf/x86/intel/uncore: Add enable_box for client MSR uncoreKan Liang1-0/+14
There are bug reports about miscounting uncore counters on some client machines like Sandybridge, Broadwell and Skylake. It is very likely to be observed on idle systems. This issue is caused by a hardware issue. PERF_GLOBAL_CTL could be cleared after Package C7, and nothing will be count. The related errata (HSD 158) could be found in: www.intel.com/content/dam/www/public/us/en/documents/specification-updates/4th-gen-core-family-desktop-specification-update.pdf This patch tries to work around this issue by re-enabling PERF_GLOBAL_CTL in ->enable_box(). The workaround does not cover all cases. It helps for new events after returning from C7. But it cannot prevent C7, it will still miscount if a counter is already active. There is no drawback in leaving it enabled, so it does not need disable_box() here. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: <stable@vger.kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1470925874-59943-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-12perf/x86/intel/uncore: Fix uncore num_countersKan Liang1-5/+5
Some uncore boxes' num_counters value for Haswell server and Broadwell server are not correct (too large, off by one). This issue was found by comparing the code with the document. Although there is no bug report from users yet, accessing non-existent counters is dangerous and the behavior is undefined: it may cause miscounting or even crashes. This patch makes them consistent with the uncore document. Reported-by: Lukasz Odzioba <lukasz.odzioba@intel.com> Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/1470925820-59847-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-12uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructionsDenys Vlasenko1-11/+11
Since instruction decoder now supports EVEX-encoded instructions, two fixes are needed to correctly handle them in uprobes. Extended bits for MODRM.rm field need to be sanitized just like we do it for VEX3, to avoid encoding wrong register for register-relative access. EVEX has _two_ extended bits: b and x. Theoretically, EVEX.x should be ignored by the CPU (since GPRs go only up to 15, not 31), but let's be paranoid here: proper encoding for register-relative access should have EVEX.x = 1. Secondly, we should fetch vex.vvvv for EVEX too. This is now super easy because instruction decoder populates vex_prefix.bytes[2] for all flavors of (e)vex encodings, even for VEX2. Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Cc: <stable@vger.kernel.org> # v4.1+ Fixes: 8a764a875fe3 ("x86/asm/decoder: Create artificial 3rd byte for 2-byte VEX") Link: http://lkml.kernel.org/r/20160811154521.20469-1-dvlasenk@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-11Merge tag 'fixes-for-linus' of ↵Linus Torvalds17-19/+28
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Arnd Bergmann: "A couple of bug fixes have come in for v4.8 so far. Since the first few were originally meant to go into -rc1 (but didn't get sent in time for travel reasons), the branch is unfortunately based on top of a commit in the middle of the merge window rather than -rc1. Content-wise we have: - a fix for the last remaining broken build in kernelci, getting mach-shmobile to build again with SMP disabled - a fix for a realview regression that broke real hardware but not the qemu model that everyone uses in practice (needed for v4.7 as well) - a merge conflict fix for Tegra that also broke v4.7 - two Kconfig fixes for arm64 build regressions - a couple of arm32 build warning fixes (all harmless) - fix the RTC on Exynos7 Espresso (which apparently never worked right)" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: Merge tag 'pxa-fixes-v4.8' of https://github.com/rjarzmik/linux into randconfig-4.8 arm64: Kconfig: select HISILICON_IRQ_MBIGEN only if PCI is selected arm64: Kconfig: select ALPINE_MSI only if PCI is selected ARM: dts: realview: Fix PBX-A9 cache description ARM: tegra: fix erroneous address in dts ARM: dts: add syscon compatible string for AP syscon ARM: dts: add syscon compatible string for CP syscon ARM: oxnas: select reset controller framework ARM: hide mach-*/ include for ARM_SINGLE_ARMV7M ARM: don't include removed directories Revert "ARM: aspeed: adapt defconfigs for new CONFIG_PRINTK_TIME" ARM: shmobile: don't call platform_can_secondary_boot on UP MAINTAINER: alpine: add a mailing list ARM: do away with final ARCH_REQUIRE_GPIOLIB arm64: dts: Fix RTC by providing rtc_src clock
2016-08-11Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds1-0/+13
Pull virtio/vhost fixes and cleanups from Michael Tsirkin: "Misc fixes and cleanups all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio/s390: deprecate old transport virtio/s390: keep early_put_chars virtio_blk: Fix a slient kernel panic virtio-vsock: fix include guard typo vhost/vsock: fix vhost virtio_vsock_pkt use-after-free 9p/trans_virtio: use kvfree() for iov_iter_get_pages_alloc() virtio: fix error handling for debug builds virtio: fix memory leak in virtqueue_add()
2016-08-11arm64: Remove stack duplicating code from jprobesDavid A. Long2-28/+5
Because the arm64 calling standard allows stacked function arguments to be anywhere in the stack frame, do not attempt to duplicate the stack frame for jprobes handler functions. Documentation changes to describe this issue have been broken out into a separate patch in order to simultaneously address them in other architecture(s). Signed-off-by: David A. Long <dave.long@linaro.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-08-11x86/apic/x2apic, smp/hotplug: Don't use before alloc in x2apic_cluster_probe()Sebastian Andrzej Siewior1-4/+9
I made a mistake while converting the driver to the hotplug state machine and as a result x2apic_cluster_probe() was accessing cpus_in_cluster before allocating it. This patch fixes it by setting the cpumask after the allocation the memory succeeded. While at it, I marked two functions static which are only used within this file. Reported-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 6b2c28471de5 ("x86/x2apic: Convert to CPU hotplug state machine") Link: http://lkml.kernel.org/r/1470924515-9444-1-git-send-email-bigeasy@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-11x86/platform/uv: Skip UV runtime services mapping in the ↵Alex Thorlton1-1/+2
efi_runtime_disabled case This problem has actually been in the UV code for a while, but we didn't catch it until recently, because we had been relying on EFI_OLD_MEMMAP to allow our systems to boot for a period of time. We noticed the issue when trying to kexec a recent community kernel, where we hit this NULL pointer dereference in efi_sync_low_kernel_mappings(): [ 0.337515] BUG: unable to handle kernel NULL pointer dereference at 0000000000000880 [ 0.346276] IP: [<ffffffff8105df8d>] efi_sync_low_kernel_mappings+0x5d/0x1b0 The problem doesn't show up with EFI_OLD_MEMMAP because we skip the chunk of setup_efi_state() that sets the efi_loader_signature for the kexec'd kernel. When the kexec'd kernel boots, it won't set EFI_BOOT in setup_arch, so we completely avoid the bug. We always kexec with noefi on the command line, so this shouldn't be an issue, but since we're not actually checking for efi_runtime_disabled in uv_bios_init(), we end up trying to do EFI runtime callbacks when we shouldn't be. This patch just adds a check for efi_runtime_disabled in uv_bios_init() so that we don't map in uv_systab when runtime_disabled == true. Signed-off-by: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: <stable@vger.kernel.org> # v4.7 Cc: Andy Lutomirski <luto@kernel.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Travis <travis@sgi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russ Anderson <rja@sgi.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1470912120-22831-2-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
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