- 21 Mar, 2022 21 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcuLinus Torvalds authored
Pull RCU updates from Paul McKenney: - Fix idle detection (Neeraj Upadhyay) and missing access marking detected by KCSAN. - Reduce coupling between rcu_barrier() and CPU-hotplug operations, so that rcu_barrier() no longer needs to do cpus_read_lock(). This may also someday allow system boot to bring CPUs online concurrently. - Enable more aggressive movement to per-CPU queueing when reacting to excessive lock contention due to workloads placing heavy update-side stress on RCU tasks. - Improvements to RCU priority boosting, including changes from Neeraj Upadhyay, Zqiang, and Alison Chaiken. - Various fixes improving test robustness and debug information. - Add tests for SRCU size transitions, further compress torture.sh build products, and improve debug output. - Miscellaneous fixes. * tag 'rcu.2022.03.13a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (49 commits) rcu: Replace cpumask_weight with cpumask_empty where appropriate rcu: Remove __read_mostly annotations from rcu_scheduler_active externs rcu: Uninline multi-use function: finish_rcuwait() rcu: Mark writes to the rcu_segcblist structure's ->flags field kasan: Record work creation stack trace with interrupts enabled rcu: Inline __call_rcu() into call_rcu() rcu: Add mutex for rcu boost kthread spawning and affinity setting rcu: Fix description of kvfree_rcu() MAINTAINERS: Add Frederic and Neeraj to their RCU files rcutorture: Provide non-power-of-two Tasks RCU scenarios rcutorture: Test SRCU size transitions torture: Make torture.sh help message match reality rcu-tasks: Set ->percpu_enqueue_shift to zero upon contention rcu-tasks: Use order_base_2() instead of ilog2() rcu: Create and use an rcu_rdp_cpu_online() rcu: Make rcu_barrier() no longer block CPU-hotplug operations rcu: Rework rcu_barrier() and callback-migration logic rcu: Refactor rcu_barrier() empty-list handling rcu: Kill rnp->ofl_seq and use only rcu_state.ofl_lock for exclusion torture: Change KVM environment variable to RCUTORTURE ...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc architecture updates from Helge Deller: - add vDSO support (allows us to use non-executable stacks) - many TLB and cache flush optimizations (by Dave Anglin) - fix handling of probe non-access faults (by Dave Anglin) - fix invalidate/flush vmap routines (by Dave Anglin) - avoid using hardware single-step in kprobes - enable ARCH_HAS_DEBUG_VM_PGTABLE - many cleanups in unaligned handlers, e.g. rewrite of existing assembly code - always use the self-extracting kernel feature - big refacturing and code reductions regarding space-register usage in get_user() and put_user() - add fillrect() support to stifb graphics driver * tag 'for-5.18/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (23 commits) parisc: Fix invalidate/flush vmap routines parisc: Avoid flushing cache on cache-less machines parisc: Avoid using hardware single-step in kprobes parisc: Improve CPU socket and core bootup info text parisc: Enable ARCH_HAS_DEBUG_VM_PGTABLE parisc: Avoid calling SMP cache flush functions on cache-less machines parisc: Increase parisc_cache_flush_threshold setting parisc/unaligned: Enhance user-space visible output parisc/unaligned: Rewrite 32-bit inline assembly of emulate_sth() parisc/unaligned: Rewrite 32-bit inline assembly of emulate_ldd() parisc/unaligned: Rewrite inline assembly of emulate_ldw() parisc/unaligned: Rewrite inline assembly of emulate_ldh() parisc/unaligned: Use EFAULT fixup handler in unaligned handlers parisc: Reduce code size by optimizing get_current() function calls parisc: Use constants to encode the space registers like SR_KERNEL parisc: Use SR_USER and SR_KERNEL in get_user() and put_user() parisc: Add defines for various space register parisc: Always use the self-extracting kernel feature video/fbdev/stifb: Implement the stifb_fillrect() function parisc: Add vDSO support ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull interrupt updates from Thomas Gleixner: "Core code: - Provide generic_handle_irq_safe() which can be invoked from any context (hard interrupt or threaded). This allows to remove ugly workarounds in drivers all over the place. - Use generic_handle_irq_safe() in the affected drivers. - The usual cleanups and improvements. Interrupt chip drivers: - Support for new interrupt chips or not yet supported variants: STM32MP14, Meson GPIO, Apple M1 PMU, Apple M1 AICv2, Qualcomm MPM - Convert the Xilinx driver to generic interrupt domains - Cleanup the irq_chip::name handling - The usual cleanups and improvements all over the place" * tag 'irq-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) irqchip: Add Qualcomm MPM controller driver dt-bindings: interrupt-controller: Add Qualcomm MPM support irqchip/apple-aic: Add support for AICv2 irqchip/apple-aic: Support multiple dies irqchip/apple-aic: Dynamically compute register offsets irqchip/apple-aic: Switch to irq_domain_create_tree and sparse hwirqs irqchip/apple-aic: Add Fast IPI support dt-bindings: interrupt-controller: apple,aic2: New binding for AICv2 PCI: apple: Change MSI handling to handle 4-cell AIC fwspec form irqchip/apple-aic: Fix cpumask allocation for FIQs irqchip/meson-gpio: Add support for meson s4 SoCs irqchip/meson-gpio: add select trigger type callback irqchip/meson-gpio: support more than 8 channels gpio irq dt-bindings: interrupt-controller: New binding for Meson-S4 SoCs irqchip/xilinx: Switch to GENERIC_IRQ_MULTI_HANDLER staging: greybus: gpio: Use generic_handle_irq_safe(). net: usb: lan78xx: Use generic_handle_irq_safe(). mfd: ezx-pcap: Use generic_handle_irq_safe(). misc: hi6421-spmi-pmic: Use generic_handle_irq_safe(). irqchip/sifive-plic: Disable S-mode IRQs if running in M-mode ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer and timekeeping updates from Thomas Gleixner: "Core code: - Make the NOHZ handling of the timekeeping/tick core more robust to prevent a rare jiffies update stall. - Handle softirqs in the NOHZ/idle case correctly Drivers: - Add support for event stream scaling of the 1GHz counter on ARM(64) - Correct an error code check in the timer-of layer - The usual cleanups and improvements all over the place" * tag 'timers-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) lib/irq_poll: Declare IRQ_POLL softirq vector as ksoftirqd-parking safe tick/rcu: Stop allowing RCU_SOFTIRQ in idle tick/rcu: Remove obsolete rcu_needs_cpu() parameters tick: Detect and fix jiffies update stall clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init() clocksource/drivers/timer-microchip-pit64b: Use 5MHz for clockevent clocksource/drivers/timer-microchip-pit64b: Use notrace clocksource/drivers/timer-microchip-pit64b: Remove mmio selection dt-bindings: timer: Tegra: Convert text bindings to yaml clocksource/drivers/imx-tpm: Move tpm_read_sched_clock() under CONFIG_ARM clocksource/drivers/arm_arch_timer: Use event stream scaling when available clocksource/drivers/exynos_mct: Increase the size of name array clocksource/drivers/exynos_mct: Bump up mct max irq number clocksource/drivers/exynos_mct: Remove mct interrupt index enum clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix clocksource/drivers/imx-tpm: Exclude sched clock for ARM64 clocksource: Add a Kconfig option for WATCHDOG_MAX_SKEW clocksource/drivers/imx-tpm: Update name of clkevt clocksource/drivers/imx-tpm: Add CLOCK_EVT_FEAT_DYNIRQ ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core process handling RT latency updates from Thomas Gleixner: - Reduce the amount of work to release a task stack in context switch. There is no real reason to do cgroup accounting and memory freeing in this performance sensitive context. Aside of this the invoked functions cannot be called from this preemption disabled context on PREEMPT_RT enabled kernels. Solve this by moving the accounting into do_exit() and delaying the freeing of the stack unless the vmap stack can be cached. - Provide a mechanism to delay raising signals from atomic context on PREEMPT_RT enabled kernels as sighand::lock cannot be acquired. Store the information in the task struct and raise it in the exit path. * tag 'core-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: signal, x86: Delay calling signals in atomic on RT enabled kernels fork: Use IS_ENABLED() in account_kernel_stack() fork: Only cache the VMAP stack in finish_task_switch() fork: Move task stack accounting to do_exit() fork: Move memcg_charge_kernel_stack() into CONFIG_VMAP_STACK fork: Don't assign the stack pointer in dup_task_struct() fork, IA64: Provide alloc_thread_stack_node() for IA64 fork: Duplicate task_struct before stack allocation fork: Redo ifdefs around task stack handling
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 PASID support from Thomas Gleixner: "Reenable ENQCMD/PASID support: - Simplify the PASID handling to allocate the PASID once, associate it to the mm of a process and free it on mm_exit(). The previous attempt of refcounted PASIDs and dynamic alloc()/free() turned out to be error prone and too complex. The PASID space is 20bits, so the case of resource exhaustion is a pure academic concern. - Populate the PASID MSR on demand via #GP to avoid racy updates via IPIs. - Reenable ENQCMD and let objtool check for the forbidden usage of ENQCMD in the kernel. - Update the documentation for Shared Virtual Addressing accordingly" * tag 'x86-pasid-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation/x86: Update documentation for SVA (Shared Virtual Addressing) tools/objtool: Check for use of the ENQCMD instruction in the kernel x86/cpufeatures: Re-enable ENQCMD x86/traps: Demand-populate PASID MSR via #GP sched: Define and initialize a flag to identify valid PASID in the task x86/fpu: Clear PASID when copying fpstate iommu/sva: Assign a PASID to mm on PASID allocation and free it on mm exit kernel/fork: Initialize mm's PASID iommu/ioasid: Introduce a helper to check for valid PASIDs mm: Change CONFIG option for mm->pasid field iommu/sva: Rename CONFIG_IOMMU_SVA_LIB to CONFIG_IOMMU_SVA
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cleanups from Borislav Petkov: - Remove a misleading message and an unused function * tag 'x86_cleanups_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/nmi: Remove the 'strange power saving mode' hint from unknown NMI handler x86/pat: Remove the unused set_pages_array_wt() function
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 confidential computing updates from Borislav Petkov: - Add shared confidential computing code which will be used by both vendors instead of proliferating home-grown solutions for technologies (SEV/SNP and TDX) which are pretty similar * tag 'x86_cc_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/cpa: Generalize __set_memory_enc_pgtable() x86/coco: Add API to handle encryption mask x86/coco: Explicitly declare type of confidential computing platform x86/cc: Move arch/x86/{kernel/cc_platform.c => coco/core.c}
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 SGX updates from Borislav Petkov: - A couple of fixes and improvements to the SGX selftests * tag 'x86_sgx_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/sgx: Treat CC as one argument selftests/x86: Add validity check and allow field splitting selftests/sgx: Remove extra newlines in test output selftests/sgx: Ensure enclave data available during debug print selftests/sgx: Do not attempt enclave build without valid enclave selftests/sgx: Fix NULL-pointer-dereference upon early test failure
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 SEV fix from Borislav Petkov: - Add a missing function section annotation * tag 'x86_sev_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/head64: Add missing __head annotation to sme_postprocess_startup()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 paravirt improvement from Borislav Petkov: - Shorten CALL insns to pvops by a byte by using rip-relative addressing * tag 'x86_paravirt_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/paravirt: Use %rip-relative addressing in hook calls
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 Kconfig fix from Borislav Petkov: - Correct Kconfig symbol visibility on x86 * tag 'x86_build_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Kconfig: Select ARCH_SELECT_MEMORY_MODEL only if FLATMEM and SPARSEMEM are possible
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull misc x86 updates from Borislav Petkov: - Add support for a couple new insn sets to the insn decoder: AVX512-FP16, AMX, other misc insns. - Update VMware-specific MAINTAINERS entries * tag 'x86_misc_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: MAINTAINERS: Mark VMware mailing list entries as email aliases MAINTAINERS: Add Zack as maintainer of vmmouse driver MAINTAINERS: Update maintainers for paravirt ops and VMware hypervisor interface x86/insn: Add AVX512-FP16 instructions to the x86 instruction decoder perf/tests: Add AVX512-FP16 instructions to x86 instruction decoder test x86/insn: Add misc instructions to x86 instruction decoder perf/tests: Add misc instructions to the x86 instruction decoder test x86/insn: Add AMX instructions to the x86 instruction decoder perf/tests: Add AMX instructions to x86 instruction decoder test
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cpu feature updates from Borislav Petkov: - Merge the AMD and Intel PPIN code into a shared one by both vendors. Add the PPIN number to sysfs so that sockets can be identified when replacement is needed - Minor fixes and cleanups * tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Clear SME feature flag when not in use x86/cpufeatures: Put the AMX macros in the word 18 block topology/sysfs: Add PPIN in sysfs under cpu topology topology/sysfs: Add format parameter to macro defining "show" functions for proc x86/cpu: Read/save PPIN MSR during initialization x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit x86/cpu: Merge Intel and AMD ppin_init() functions x86/CPU/AMD: Use default_groups in kobj_type
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC updates from Borislav Petkov: - Add support for newer AMD family 0x19, models 0x10-... CPUs to amd64_edac - The usual amount of improvements and fixes * tag 'edac_updates_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/altera: Add SDRAM ECC check for U-Boot EDAC/amd64: Add new register offset support and related changes EDAC/amd64: Set memory type per DIMM EDAC/mc: Remove unnecessary cast to char * in edac_align_ptr() EDAC: Use default_groups in kobj_type EDAC: Use proper list of struct attribute for attributes
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k updates from Geert Uytterhoeven: - Fix frame buffers backed by deferred I/O - defconfig updates - Minor fixes and improvements * tag 'm68k-for-v5.18-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: defconfig: Disable fbdev on Sun3/3x m68k: defconfig: Update defconfigs for v5.17-rc3 m68k: mm: Remove check for VM_IO to fix deferred I/O m68k: Add asm/config.h
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM updates from Russell King: - amba bus cleanups - conversion to use reserve_initrd_mem() - remove -nostdlib from vdso link * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9181/1: vdso: remove -nostdlib compiler flag ARM: 9175/1: Convert to reserve_initrd_mem() ARM: 9174/1: amba: Move EXPORT_SYMBOL() closer to definition ARM: 9173/1: amba: kill amba_find_match() ARM: 9172/1: amba: Cleanup amba pclk operation
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 updates from Will Deacon: - Support for including MTE tags in ELF coredumps - Instruction encoder updates, including fixes to 64-bit immediate generation and support for the LSE atomic instructions - Improvements to kselftests for MTE and fpsimd - Symbol aliasing and linker script cleanups - Reduce instruction cache maintenance performed for user mappings created using contiguous PTEs - Support for the new "asymmetric" MTE mode, where stores are checked asynchronously but loads are checked synchronously - Support for the latest pointer authentication algorithm ("QARMA3") - Support for the DDR PMU present in the Marvell CN10K platform - Support for the CPU PMU present in the Apple M1 platform - Use the RNDR instruction for arch_get_random_{int,long}() - Update our copy of the Arm optimised string routines for str{n}cmp() - Fix signal frame generation for CPUs which have foolishly elected to avoid building in support for the fpsimd instructions - Workaround for Marvell GICv3 erratum #38545 - Clarification to our Documentation (booting reqs. and MTE prctl()) - Miscellanous cleanups and minor fixes * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (90 commits) docs: sysfs-devices-system-cpu: document "asymm" value for mte_tcf_preferred arm64/mte: Remove asymmetric mode from the prctl() interface arm64: Add cavium_erratum_23154_cpus missing sentinel perf/marvell: Fix !CONFIG_OF build for CN10K DDR PMU driver arm64: mm: Drop 'const' from conditional arm64_dma_phys_limit definition Documentation: vmcoreinfo: Fix htmldocs warning kasan: fix a missing header include of static_keys.h drivers/perf: Add Apple icestorm/firestorm CPU PMU driver drivers/perf: arm_pmu: Handle 47 bit counters arm64: perf: Consistently make all event numbers as 16-bits arm64: perf: Expose some Armv9 common events under sysfs perf/marvell: cn10k DDR perf event core ownership perf/marvell: cn10k DDR perfmon event overflow handling perf/marvell: CN10k DDR performance monitor support dt-bindings: perf: marvell: cn10k ddr performance monitor arm64: clean up tools Makefile perf/arm-cmn: Update watchpoint format perf/arm-cmn: Hide XP PUB events for CMN-600 arm64: drop unused includes of <linux/personality.h> arm64: Do not defer reserve_crashkernel() for platforms with no DMA memory zones ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmddLinus Torvalds authored
Pull tpm updates from Jarkko Sakkinen: "In order to split the work a bit we've aligned with David Howells more or less that I take more hardware/firmware aligned keyring patches, and he takes care more of the framework aligned patches. For TPM the patches worth of highlighting are the fixes for refcounting provided by Lino Sanfilippo and James Bottomley. Eric B. has done a bunch obvious (but important) fixes but there's one a bit controversial: removal of asym_tpm. It was added in 2018 when TPM1 was already declared as insecure and world had moved on to TPM2. I don't know how this has passed all the filters but I did not have a chance to see the patches when they were out. I simply cannot commit to maintaining this because it was from all angles just wrong to take it in the first place to the mainline kernel. Nobody should use this module really for anything. Finally, there is a new keyring '.machine' to hold MOK keys ('Machine Owner Keys'). In the mok side MokListTrustedRT UEFI variable can be set, from which kernel knows that MOK keys are kernel trusted keys and they are populated to the machine keyring. This keyring linked to the secondary trusted keyring, which means that can be used like any kernel trusted keys. This keyring of course can be used to hold other MOK'ish keys in other platforms in future" * tag 'tpmdd-next-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: (24 commits) tpm: use try_get_ops() in tpm-space.c KEYS: asymmetric: properly validate hash_algo and encoding KEYS: asymmetric: enforce that sig algo matches key algo KEYS: remove support for asym_tpm keys tpm: fix reference counting for struct tpm_chip integrity: Only use machine keyring when uefi_check_trust_mok_keys is true integrity: Trust MOK keys if MokListTrustedRT found efi/mokvar: move up init order KEYS: Introduce link restriction for machine keys KEYS: store reference to machine keyring integrity: add new keyring handler for mok keys integrity: Introduce a Linux keyring called machine integrity: Fix warning about missing prototypes KEYS: trusted: Avoid calling null function trusted_key_exit KEYS: trusted: Fix trusted key backends when building as module tpm: xen-tpmfront: Use struct_size() helper KEYS: x509: remove dead code that set ->unsupported_sig KEYS: x509: remove never-set ->unsupported_key flag KEYS: x509: remove unused fields KEYS: x509: clearly distinguish between key and signature algorithms ...
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John David Anglin authored
Cache move-in for virtual accesses is controlled by the TLB. Thus, we must generally purge TLB entries before flushing. The flush routines must use TLB entries that inhibit cache move-in. V2: Load physical address prior to flushing TLB. In flush_cache_page, flush TLB when flushing and purging. V3: Don't flush when start equals end. Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
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Borislav Petkov authored
Signed-off-by: Borislav Petkov <bp@suse.de>
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- 20 Mar, 2022 4 commits
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Linus Torvalds authored
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fix from Paolo Bonzini: "Fix for the SLS mitigation, which makes a 'SETcc/RET' pair grow to 'SETcc/RET/INT3'. This doesn't fit in 4 bytes any more, so the alignment has to change to 8 for this case" * tag 'for-linus-5.17' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm/emulate: Fix SETcc emulation function offsets with SLS
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Two driver fixes: - a fix for zinitix touchscreen to properly report contacts - a fix for aiptek tablet driver to be more resilient to devices with incorrect descriptors" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: aiptek - properly check endpoint type Input: zinitix - do not report shadow fingers
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Borislav Petkov authored
The commit in Fixes started adding INT3 after RETs as a mitigation against straight-line speculation. The fastop SETcc implementation in kvm's insn emulator uses macro magic to generate all possible SETcc functions and to jump to them when emulating the respective instruction. However, it hardcodes the size and alignment of those functions to 4: a three-byte SETcc insn and a single-byte RET. BUT, with SLS, there's an INT3 that gets slapped after the RET, which brings the whole scheme out of alignment: 15: 0f 90 c0 seto %al 18: c3 ret 19: cc int3 1a: 0f 1f 00 nopl (%rax) 1d: 0f 91 c0 setno %al 20: c3 ret 21: cc int3 22: 0f 1f 00 nopl (%rax) 25: 0f 92 c0 setb %al 28: c3 ret 29: cc int3 and this explodes like this: int3: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 2435 Comm: qemu-system-x86 Not tainted 5.17.0-rc8-sls #1 Hardware name: Dell Inc. Precision WorkStation T3400 /0TP412, BIOS A14 04/30/2012 RIP: 0010:setc+0x5/0x8 [kvm] Code: 00 00 0f 1f 00 0f b6 05 43 24 06 00 c3 cc 0f 1f 80 00 00 00 00 0f 90 c0 c3 cc 0f \ 1f 00 0f 91 c0 c3 cc 0f 1f 00 0f 92 c0 c3 cc <0f> 1f 00 0f 93 c0 c3 cc 0f 1f 00 \ 0f 94 c0 c3 cc 0f 1f 00 0f 95 c0 Call Trace: <TASK> ? x86_emulate_insn [kvm] ? x86_emulate_instruction [kvm] ? vmx_handle_exit [kvm_intel] ? kvm_arch_vcpu_ioctl_run [kvm] ? kvm_vcpu_ioctl [kvm] ? __x64_sys_ioctl ? do_syscall_64 ? entry_SYSCALL_64_after_hwframe </TASK> Raise the alignment value when SLS is enabled and use a macro for that instead of hard-coding naked numbers. Fixes: e463a09a ("x86: Add straight-line-speculation mitigation") Reported-by: Jamie Heilman <jamie@audible.transient.net> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Jamie Heilman <jamie@audible.transient.net> Link: https://lore.kernel.org/r/YjGzJwjrvxg5YZ0Z@audible.transient.net [Add a comment and a bit of safety checking, since this is going to be changed again for IBT support. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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- 19 Mar, 2022 5 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fix from Arnd Bergmann: "Here is one last regression fix for 5.17, reverting a patch that went into 5.16 as a cleanup that ended up breaking external interrupts on Layerscape chips. The revert makes it work again, but also reintroduces a build time warning about the nonstandard DT binding that will have to be dealt with in the future" * tag 'soc-fixes-5.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: Revert "arm64: dts: freescale: Fix 'interrupt-map' parent address cells"
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Two small(ish) fixes, both in drivers" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: fnic: Finish scsi_cmnd before dropping the spinlock scsi: mpt3sas: Page fault in reply q processing
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Linus Torvalds authored
Merge tag 'perf-tools-fixes-for-v5.17-2022-03-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Avoid iterating empty evlist, fixing a segfault with 'perf stat --null' - Ignore case in topdown.slots check, fixing issue with Intel Icelake JSON metrics. - Fix symbol size calculation condition for fixing up corner case symbol end address obtained from Kallsyms. * tag 'perf-tools-fixes-for-v5.17-2022-03-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf parse-events: Ignore case in topdown.slots check perf evlist: Avoid iteration for empty evlist. perf symbols: Fix symbol size calculation condition
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc driver fix from Greg KH: "Here is a single driver fix for 5.17-final that has been submitted many times but I somehow missed it in my patch queue: - fix for counter sysfs code for reported problem This has been in linux-next all week with no reported issues" * tag 'char-misc-5.17-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: counter: Stop using dev_get_drvdata() to get the counter device
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some small remaining USB fixes for 5.17-final. They include: - two USB gadget driver fixes for reported problems - usbtmc driver fix for syzbot found issues - musb patch partial revert to resolve a reported regression. All of these have been in linux-next this week with no reported problems" * tag 'usb-5.17-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: gadget: Fix use-after-free bug by not setting udc->dev.driver usb: usbtmc: Fix bug in pipe direction for control transfers partially Revert "usb: musb: Set the DT node on the child device" usb: gadget: rndis: prevent integer overflow in rndis_set_response()
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- 18 Mar, 2022 10 commits
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Helge Deller authored
Avoid flushing caches in __flush_cache_page() and __purge_cache_page() if the machine hasn't data or instruction caches - as e.g. in qemu. Signed-off-by: Helge Deller <deller@gmx.de>
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Ian Rogers authored
An issue with icelakex metrics: https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tree/tools/perf/pmu-events/arch/x86/icelakex/icx-metrics.json?h=perf/core&id=65eab2bc7dab326ee892ec5a4c749470b368b51a#n48 That causes the slots not to be first. Fixes: 94dbfd67 ("perf parse-events: Architecture specific leader override") Reported-by: Caleb Biggers <caleb.biggers@intel.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.garry@huawei.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20220317224309.543736-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Ian Rogers authored
As seen with 'perf stat --null ..' and reported in: https://lore.kernel.org/lkml/YjCLcpcX2peeQVCH@kernel.org/ v2. Avoids setting evsel in the empty list case as suggested by Jiri Olsa. Committer testing: Before: $ perf stat --null sleep 1 Segmentation fault (core dumped) $ After: $ perf stat --null sleep 1 Performance counter stats for 'sleep 1': 1.010340646 seconds time elapsed 0.001420000 seconds user 0.000000000 seconds sys $ Fixes: 472832d2 ("perf evlist: Refactor evlist__for_each_cpu()") Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220317231643.550902-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Michael Petlan authored
Before this patch, the symbol end address fixup to be called, needed two conditions being met: if (prev->end == prev->start && prev->end != curr->start) Where "prev->end == prev->start" means that prev is zero-long (and thus needs a fixup) and "prev->end != curr->start" means that fixup hasn't been applied yet However, this logic is incorrect in the following situation: *curr = {rb_node = {__rb_parent_color = 278218928, rb_right = 0x0, rb_left = 0x0}, start = 0xc000000000062354, end = 0xc000000000062354, namelen = 40, type = 2 '\002', binding = 0 '\000', idle = 0 '\000', ignore = 0 '\000', inlined = 0 '\000', arch_sym = 0 '\000', annotate2 = false, name = 0x1159739e "kprobe_optinsn_page\t[__builtin__kprobes]"} *prev = {rb_node = {__rb_parent_color = 278219041, rb_right = 0x109548b0, rb_left = 0x109547c0}, start = 0xc000000000062354, end = 0xc000000000062354, namelen = 12, type = 2 '\002', binding = 1 '\001', idle = 0 '\000', ignore = 0 '\000', inlined = 0 '\000', arch_sym = 0 '\000', annotate2 = false, name = 0x1095486e "optinsn_slot"} In this case, prev->start == prev->end == curr->start == curr->end, thus the condition above thinks that "we need a fixup due to zero length of prev symbol, but it has been probably done, since the prev->end == curr->start", which is wrong. After the patch, the execution path proceeds to arch__symbols__fixup_end function which fixes up the size of prev symbol by adding page_size to its end offset. Fixes: 3b01a413 ("perf symbols: Improve kallsyms symbol end addr calculation") Signed-off-by: Michael Petlan <mpetlan@redhat.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Link: http://lore.kernel.org/lkml/20220317135536.805-1-mpetlan@redhat.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: "Fix two compiler warnings introduced by recent commits: pointer arithmetic and double initialisation of struct field" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: errata: avoid duplicate field initializer arm64: fix clang warning about TRAMP_VALIAS
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fix from Steve French: "Small fix for regression in multiuser mounts. The additional improvements suggested by Ronnie to make the server and session status handling code easier to read can wait for the 5.18 merge window." * tag '5.17-rc8-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6: smb3: fix incorrect session setup check for multiuser mounts
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - Revert of a nvme target feature (Hannes) - Fix a memory leak with rq-qos (Ming) * tag 'block-5.17-2022-03-18' of git://git.kernel.dk/linux-block: nvmet: revert "nvmet: make discovery NQN configurable" block: release rq qos structures for queue without disk
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "A few minor changes to finish things off, one mgag200 regression, imx fix and couple of panel changes. imx: - Don't test bus flags in atomic check mgag200: - Fix PLL setup on some models panel: - Fix bpp settings on Innolux G070Y2-L01 - Fix DRM_PANEL_EDP Kconfig dependencies" * tag 'drm-fixes-2022-03-18' of git://anongit.freedesktop.org/drm/drm: drm: Don't make DRM_PANEL_BRIDGE dependent on DRM_KMS_HELPERS drm/panel: simple: Fix Innolux G070Y2-L01 BPP settings drm/imx: parallel-display: Remove bus flags check in imx_pd_bridge_atomic_check() drm/mgag200: Fix PLL setup for g200wb and g200ew
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Arnd Bergmann authored
The '.type' field is initialized both in place and in the macro as reported by this W=1 warning: arch/arm64/include/asm/cpufeature.h:281:9: error: initialized field overwritten [-Werror=override-init] 281 | (ARM64_CPUCAP_SCOPE_LOCAL_CPU | ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU) | ^ arch/arm64/kernel/cpu_errata.c:136:17: note: in expansion of macro 'ARM64_CPUCAP_LOCAL_CPU_ERRATUM' 136 | .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:145:9: note: in expansion of macro 'ERRATA_MIDR_RANGE' 145 | ERRATA_MIDR_RANGE(m, var, r_min, var, r_max) | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:613:17: note: in expansion of macro 'ERRATA_MIDR_REV_RANGE' 613 | ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A510, 0, 0, 2), | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/include/asm/cpufeature.h:281:9: note: (near initialization for 'arm64_errata[18].type') 281 | (ARM64_CPUCAP_SCOPE_LOCAL_CPU | ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU) | ^ Remove the extranous initializer. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 1dd498e5 ("KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata") Link: https://lore.kernel.org/r/20220316183800.1546731-1-arnd@kernel.orgSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Arnd Bergmann authored
The newly introduced TRAMP_VALIAS definition causes a build warning with clang-14: arch/arm64/include/asm/vectors.h:66:31: error: arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension [-Werror,-Wnull-pointer-arithmetic] return (char *)TRAMP_VALIAS + SZ_2K * slot; Change the addition to something clang does not complain about. Fixes: bd09128d ("arm64: Add percpu vectors for EL1") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20220316183833.1563139-1-arnd@kernel.orgSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>
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