kernel_arpi

Author	SHA1	Message	Date
Greg Kroah-Hartman	daa2cef415	Merge 5.4.48 into android-5.4 Changes in 5.4.48 ACPI: GED: use correct trigger type field in _Exx / _Lxx handling drm/amdgpu: fix and cleanup amdgpu_gem_object_close v4 ath10k: Fix the race condition in firmware dump work queue drm: bridge: adv7511: Extend list of audio sample rates media: staging: imgu: do not hold spinlock during freeing mmu page table media: imx: imx7-mipi-csis: Cleanup and fix subdev pad format handling crypto: ccp -- don't "select" CONFIG_DMADEVICES media: vicodec: Fix error codes in probe function media: si2157: Better check for running tuner in init objtool: Ignore empty alternatives spi: spi-mem: Fix Dual/Quad modes on Octal-capable devices drm/amdgpu: Init data to avoid oops while reading pp_num_states. arm64/kernel: Fix range on invalidating dcache for boot page tables libbpf: Fix memory leak and possible double-free in hashmap__clear spi: pxa2xx: Apply CS clk quirk to BXT x86,smap: Fix smap_{save,restore}() alternatives sched/fair: Refill bandwidth before scaling net: atlantic: make hw_get_regs optional net: ena: fix error returning in ena_com_get_hash_function() efi/libstub/x86: Work around LLVM ELF quirk build regression ath10k: remove the max_sched_scan_reqs value arm64: cacheflush: Fix KGDB trap detection media: staging: ipu3: Fix stale list entries on parameter queue failure rtw88: fix an issue about leak system resources spi: dw: Zero DMA Tx and Rx configurations on stack ACPICA: Dispatcher: add status checks block: alloc map and request for new hardware queue arm64: insn: Fix two bugs in encoding 32-bit logical immediates block: reset mapping if failed to update hardware queue count drm: rcar-du: Set primary plane zpos immutably at initializing lockdown: Allow unprivileged users to see lockdown status ixgbe: Fix XDP redirect on archs with PAGE_SIZE above 4K platform/x86: dell-laptop: don't register micmute LED if there is no token MIPS: Loongson: Build ATI Radeon GPU driver as module Bluetooth: Add SCO fallback for invalid LMP parameters error kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb kgdb: Prevent infinite recursive entries to the debugger pmu/smmuv3: Clear IRQ affinity hint on device removal ACPI/IORT: Fix PMCG node single ID mapping handling mips: Fix cpu_has_mips64r1/2 activation for MIPS32 CPUs spi: dw: Enable interrupts in accordance with DMA xfer mode clocksource: dw_apb_timer: Make CPU-affiliation being optional clocksource: dw_apb_timer_of: Fix missing clockevent timers media: dvbdev: Fix tuner->demod media controller link btrfs: account for trans_block_rsv in may_commit_transaction btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE batman-adv: Revert "disable ethtool link speed detection when auto negotiation off" ice: Fix memory leak ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS mmc: meson-mx-sdio: trigger a soft reset after a timeout or CRC error Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe() spi: dw: Fix Rx-only DMA transfers x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss() x86: fix vmap arguments in map_irq_stack staging: android: ion: use vmap instead of vm_map_ram ath10k: fix kernel null pointer dereference media: staging/intel-ipu3: Implement lock for stream on/off operations spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource brcmfmac: fix wrong location to get firmware feature regulator: qcom-rpmh: Fix typos in pm8150 and pm8150l tools api fs: Make xxx__mountpoint() more scalable e1000: Distribute switch variables for initialization dt-bindings: display: mediatek: control dpi pins mode to avoid leakage drm/mediatek: set dpi pin mode to gpio low to avoid leakage current audit: fix a net reference leak in audit_send_reply() media: dvb: return -EREMOTEIO on i2c transfer failure. media: platform: fcp: Set appropriate DMA parameters MIPS: Make sparse_init() using top-down allocation ath10k: add flush tx packets for SDIO chip Bluetooth: btbcm: Add 2 missing models to subver tables audit: fix a net reference leak in audit_list_rules_send() Drivers: hv: vmbus: Always handle the VMBus messages on CPU0 dpaa2-eth: fix return codes used in ndo_setup_tc netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported selftests/bpf: Fix memory leak in extract_build_id() net: bcmgenet: set Rx mode before starting netif net: bcmgenet: Fix WoL with password after deep sleep lib/mpi: Fix 64-bit MIPS build with Clang exit: Move preemption fixup up, move blocking operations down sched/core: Fix illegal RCU from offline CPUs drivers/perf: hisi: Fix typo in events attribute array iocost_monitor: drop string wrap around numbers when outputting json net: lpc-enet: fix error return code in lpc_mii_init() selinux: fix error return code in policydb_read() drivers: net: davinci_mdio: fix potential NULL dereference in davinci_mdio_probe() media: cec: silence shift wrapping warning in __cec_s_log_addrs() net: allwinner: Fix use correct return type for ndo_start_xmit() powerpc/spufs: fix copy_to_user while atomic libertas_tf: avoid a null dereference in pointer priv xfs: clean up the error handling in xfs_swap_extents Crypto/chcr: fix for ccm(aes) failed test MIPS: Truncate link address into 32bit for 32bit kernel mips: cm: Fix an invalid error code of INTVN__ERR kgdb: Fix spurious true from in_dbg_master() xfs: reset buffer write failure state on successful completion xfs: fix duplicate verification from xfs_qm_dqflush() platform/x86: intel-vbtn: Use acpi_evaluate_integer() platform/x86: intel-vbtn: Split keymap into buttons and switches parts platform/x86: intel-vbtn: Do not advertise switches to userspace if they are not there platform/x86: intel-vbtn: Also handle tablet-mode switch on "Detachable" and "Portable" chassis-types iwlwifi: avoid debug max amsdu config overwriting itself nvme: refine the Qemu Identify CNS quirk nvme-pci: align io queue count with allocted nvme_queue in nvme_probe nvme-tcp: use bh_lock in data_ready ath10k: Remove msdu from idr when management pkt send fails wcn36xx: Fix error handling path in 'wcn36xx_probe()' net: qed: Reduce RX and TX default ring count when running inside kdump kernel drm/mcde: dsi: Fix return value check in mcde_dsi_bind() mt76: avoid rx reorder buffer overflow md: don't flush workqueue unconditionally in md_open raid5: remove gfp flags from scribble_alloc() iocost: don't let vrate run wild while there's no saturation signal veth: Adjust hard_start offset on redirect XDP frames net/mlx5e: IPoIB, Drop multicast packets that this interface sent rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup() mwifiex: Fix memory corruption in dump_station kgdboc: Use a platform device to handle tty drivers showing up late x86/boot: Correct relocation destination on old linkers sched: Defend cfs and rt bandwidth quota against overflow mips: MAAR: Use more precise address mask mips: Add udelay lpj numbers adjustment crypto: stm32/crc32 - fix ext4 chksum BUG_ON() crypto: stm32/crc32 - fix run-time self test issue. crypto: stm32/crc32 - fix multi-instance drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode selftests/bpf: CONFIG_IPV6_SEG6_BPF required for test_seg6_loop.o x86/mm: Stop printing BRK addresses MIPS: tools: Fix resource leak in elf-entry.c m68k: mac: Don't call via_flush_cache() on Mac IIfx btrfs: improve global reserve stealing logic btrfs: qgroup: mark qgroup inconsistent if we're inherting snapshot to a new qgroup macvlan: Skip loopback packets in RX handler PCI: Don't disable decoding when mmio_always_on is set MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe() bcache: fix refcount underflow in bcache_device_free() mmc: sdhci-msm: Set SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 quirk staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core mmc: via-sdmmc: Respect the cmd->busy_timeout from the mmc core ice: fix potential double free in probe unrolling ixgbe: fix signed-integer-overflow warning iwlwifi: mvm: fix aux station leak mmc: sdhci-esdhc-imx: fix the mask for tuning start point spi: dw: Return any value retrieved from the dma_transfer callback cpuidle: Fix three reference count leaks platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32() platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015) platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type platform/x86: asus_wmi: Reserve more space for struct bias_args libbpf: Fix perf_buffer__free() API for sparse allocs bpf: Fix map permissions check bpf: Refactor sockmap redirect code so its easy to reuse bpf: Fix running sk_skb program types with ktls selftests/bpf, flow_dissector: Close TAP device FD after the test kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE string.h: fix incompatibility between FORTIFY_SOURCE and KASAN btrfs: free alien device after device add btrfs: include non-missing as a qualifier for the latest_bdev btrfs: send: emit file capabilities after chown btrfs: force chunk allocation if our global rsv is larger than metadata btrfs: fix error handling when submitting direct I/O bio btrfs: fix wrong file range cleanup after an error filling dealloc range btrfs: fix space_info bytes_may_use underflow after nocow buffered write btrfs: fix space_info bytes_may_use underflow during space cache writeout powerpc/mm: Fix conditions to perform MMU specific management by blocks on PPC32. mm: thp: make the THP mapcount atomic against __split_huge_pmd_locked() mm: initialize deferred pages with interrupts enabled mm/pagealloc.c: call touch_nmi_watchdog() on max order boundaries in deferred init mm: call cond_resched() from deferred_init_memmap() ima: Fix ima digest hash table key calculation ima: Switch to ima_hash_algo for boot aggregate ima: Evaluate error in init_ima() ima: Directly assign the ima_default_policy pointer to ima_rules ima: Call ima_calc_boot_aggregate() in ima_eventdigest_init() ima: Remove __init annotation from ima_pcrread() evm: Fix possible memory leak in evm_calc_hmac_or_hash() ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max ext4: fix error pointer dereference ext4: fix race between ext4_sync_parent() and rename() PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0 PCI: Avoid FLR for AMD Starship USB 3.0 PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints PCI: vmd: Add device id for VMD device 8086:9A0B x86/amd_nb: Add Family 19h PCI IDs PCI: Add Loongson vendor ID serial: 8250_pci: Move Pericom IDs to pci_ids.h x86/amd_nb: Add AMD family 17h model 60h PCI IDs ima: Remove redundant policy rule set in add_rules() ima: Set again build_ima_appraise variable PCI: Program MPS for RCiEP devices e1000e: Disable TSO for buffer overrun workaround e1000e: Relax condition to trigger reset for ME workaround carl9170: remove P2P_GO support media: go7007: fix a miss of snd_card_free media: cedrus: Program output format during each run serial: 8250: Avoid error message on reprobe Bluetooth: hci_bcm: fix freeing not-requested IRQ b43legacy: Fix case where channel status is corrupted b43: Fix connection problem with WPA3 b43_legacy: Fix connection problem with WPA3 media: ov5640: fix use of destroyed mutex clk: mediatek: assign the initial value to clk_init_data of mtk_mux igb: Report speed and duplex as unknown when device is runtime suspended hwmon: (k10temp) Add AMD family 17h model 60h PCI match EDAC/amd64: Add AMD family 17h model 60h PCI IDs power: vexpress: add suppress_bind_attrs to true power: supply: core: fix HWMON temperature labels power: supply: core: fix memory leak in HWMON error path pinctrl: samsung: Correct setting of eint wakeup mask on s5pv210 pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs gnss: sirf: fix error return code in sirf_probe() sparc32: fix register window handling in genregs32_[gs]et() sparc64: fix misuses of access_process_vm() in genregs32_[sg]et() dm crypt: avoid truncating the logical block size alpha: fix memory barriers so that they conform to the specification powerpc/fadump: use static allocation for reserved memory ranges powerpc/fadump: consider reserved ranges while reserving memory powerpc/fadump: Account for memory_limit while reserving memory kernel/cpu_pm: Fix uninitted local in cpu_pm ARM: tegra: Correct PL310 Auxiliary Control Register initialization soc/tegra: pmc: Select GENERIC_PINCONF ARM: dts: exynos: Fix GPIO polarity for thr GalaxyS3 CM36651 sensor's bus ARM: dts: at91: sama5d2_ptc_ek: fix vbus pin ARM: dts: s5pv210: Set keep-power-in-suspend for SDHCI1 on Aries drivers/macintosh: Fix memleak in windfarm_pm112 driver powerpc/32s: Fix another build failure with CONFIG_PPC_KUAP_DEBUG powerpc/kasan: Fix issues by lowering KASAN_SHADOW_END powerpc/kasan: Fix shadow pages allocation failure powerpc/32: Disable KASAN with pages bigger than 16k powerpc/64s: Don't let DT CPU features set FSCR_DSCR powerpc/64s: Save FSCR to init_task.thread.fscr after feature init kbuild: force to build vmlinux if CONFIG_MODVERSION=y sunrpc: svcauth_gss_register_pseudoflavor must reject duplicate registrations. sunrpc: clean up properly in gss_mech_unregister() mtd: rawnand: Fix nand_gpio_waitrdy() mtd: rawnand: onfi: Fix redundancy detection check mtd: rawnand: brcmnand: fix hamming oob layout mtd: rawnand: diskonchip: Fix the probe error path mtd: rawnand: sharpsl: Fix the probe error path mtd: rawnand: ingenic: Fix the probe error path mtd: rawnand: xway: Fix the probe error path mtd: rawnand: orion: Fix the probe error path mtd: rawnand: socrates: Fix the probe error path mtd: rawnand: oxnas: Fix the probe error path mtd: rawnand: sunxi: Fix the probe error path mtd: rawnand: plat_nand: Fix the probe error path mtd: rawnand: pasemi: Fix the probe error path mtd: rawnand: mtk: Fix the probe error path mtd: rawnand: tmio: Fix the probe error path w1: omap-hdq: cleanup to add missing newline for some dev_dbg f2fs: fix checkpoint=disable:%u%% perf probe: Do not show the skipped events perf probe: Fix to check blacklist address correctly perf probe: Check address correctness by map instead of _etext perf symbols: Fix debuginfo search for Ubuntu perf symbols: Fix kernel maps for kcore and eBPF Linux 5.4.48 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ia7aa2cbad04c824ecda9bd2aa57a835c031b3eb2	2020-06-22 10:18:51 +02:00
Peter Zijlstra	f7757368e0	sched/core: Fix illegal RCU from offline CPUs [ Upstream commit `bf2c59fce4` ] In the CPU-offline process, it calls mmdrop() after idle entry and the subsequent call to cpuhp_report_idle_dead(). Once execution passes the call to rcu_report_dead(), RCU is ignoring the CPU, which results in lockdep complaining when mmdrop() uses RCU from either memcg or debugobjects below. Fix it by cleaning up the active_mm state from BP instead. Every arch which has CONFIG_HOTPLUG_CPU should have already called idle_task_exit() from AP. The only exception is parisc because it switches them to &init_mm unconditionally (see smp_boot_one_cpu() and smp_cpu_init()), but the patch will still work there because it calls mmgrab(&init_mm) in smp_cpu_init() and then should call mmdrop(&init_mm) in finish_cpu(). WARNING: suspicious RCU usage ----------------------------- kernel/workqueue.c:710 RCU or wq_pool_mutex should be held! other info that might help us debug this: RCU used illegally from offline CPU! Call Trace: dump_stack+0xf4/0x164 (unreliable) lockdep_rcu_suspicious+0x140/0x164 get_work_pool+0x110/0x150 __queue_work+0x1bc/0xca0 queue_work_on+0x114/0x120 css_release+0x9c/0xc0 percpu_ref_put_many+0x204/0x230 free_pcp_prepare+0x264/0x570 free_unref_page+0x38/0xf0 __mmdrop+0x21c/0x2c0 idle_task_exit+0x170/0x1b0 pnv_smp_cpu_kill_self+0x38/0x2e0 cpu_die+0x48/0x64 arch_cpu_idle_dead+0x30/0x50 do_idle+0x2f4/0x470 cpu_startup_entry+0x38/0x40 start_secondary+0x7a8/0xa80 start_secondary_resume+0x10/0x14 Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Qian Cai <cai@lca.pw> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Link: https://lkml.kernel.org/r/20200401214033.8448-1-cai@lca.pw Signed-off-by: Sasha Levin <sashal@kernel.org>	2020-06-22 09:31:01 +02:00
Greg Kroah-Hartman	5c35942d94	Merge 5.4.33 into android-5.4 Changes in 5.4.33 ARM: dts: sun8i-a83t-tbs-a711: HM5065 doesn't like such a high voltage bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads ARM: dts: Fix dm814x Ethernet by changing to use rgmii-id mode bpf: Fix deadlock with rq_lock in bpf_send_signal() iwlwifi: mvm: Fix rate scale NSS configuration Input: tm2-touchkey - add support for Coreriver TC360 variant soc: fsl: dpio: register dpio irq handlers after dpio create rxrpc: Abstract out the calculation of whether there's Tx space rxrpc: Fix call interruptibility handling net: stmmac: platform: Fix misleading interrupt error msg net: vxge: fix wrong __VA_ARGS__ usage hinic: fix a bug of waitting for IO stopped hinic: fix the bug of clearing event queue hinic: fix out-of-order excution in arm cpu hinic: fix wrong para of wait_for_completion_timeout hinic: fix wrong value of MIN_SKB_LEN selftests/net: add definition for SOL_DCCP to fix compilation errors for old libc cxgb4/ptp: pass the sign of offset delta in FW CMD drm/scheduler: fix rare NULL ptr race cfg80211: Do not warn on same channel at the end of CSA qlcnic: Fix bad kzalloc null test i2c: st: fix missing struct parameter description i2c: pca-platform: Use platform_irq_get_optional media: rc: add keymap for Videostrong KII Pro cpufreq: imx6q: Fixes unwanted cpu overclocking on i.MX6ULL staging: wilc1000: avoid double unlocking of 'wilc->hif_cs' mutex media: venus: hfi_parser: Ignore HEVC encoding for V1 firmware: arm_sdei: fix double-lock on hibernate with shared events null_blk: Fix the null_add_dev() error path null_blk: Handle null_add_dev() failures properly null_blk: fix spurious IO errors after failed past-wp access media: imx: imx7_mipi_csis: Power off the source when stopping streaming media: imx: imx7-media-csi: Fix video field handling xhci: bail out early if driver can't accress host in resume ACPI: EC: Do not clear boot_ec_is_ecdt in acpi_ec_add() x86: Don't let pgprot_modify() change the page encryption bit dma-mapping: Fix dma_pgprot() for unencrypted coherent pages block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices debugfs: Check module state before warning in {full/open}_proxy_open() irqchip/versatile-fpga: Handle chained IRQs properly time/sched_clock: Expire timer in hardirq context media: allegro: fix type of gop_length in channel_create message sched: Avoid scale real weight down to zero selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault PCI/switchtec: Fix init_completion race condition with poll_wait() block, bfq: move forward the getting of an extra ref in bfq_bfqq_move media: i2c: video-i2c: fix build errors due to 'imply hwmon' libata: Remove extra scsi_host_put() in ata_scsi_add_hosts() pstore/platform: fix potential mem leak if pstore_init_fs failed gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty gfs2: Don't demote a glock until its revokes are written cpufreq: imx6q: fix error handling x86/boot: Use unsigned comparison for addresses efi/x86: Ignore the memory attributes table on i386 genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy() block: Fix use-after-free issue accessing struct io_cq media: i2c: ov5695: Fix power on and off sequences usb: dwc3: core: add support for disabling SS instances in park mode irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency md: check arrays is suspended in mddev_detach before call quiesce operations firmware: fix a double abort case with fw_load_sysfs_fallback spi: spi-fsl-dspi: Replace interruptible wait queue with a simple completion locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps() block, bfq: fix use-after-free in bfq_idle_slice_timer_body btrfs: qgroup: ensure qgroup_rescan_running is only set when the worker is at least queued btrfs: remove a BUG_ON() from merge_reloc_roots() btrfs: restart relocate_tree_blocks properly btrfs: track reloc roots based on their commit root bytenr ASoC: fix regwmask ASoC: dapm: connect virtual mux with default value ASoC: dpcm: allow start or stop during pause for backend ASoC: topology: use name_prefix for new kcontrol usb: gadget: f_fs: Fix use after free issue as part of queue failure usb: gadget: composite: Inform controller driver of self-powered ALSA: usb-audio: Add mixer workaround for TRX40 and co ALSA: hda: Add driver blacklist ALSA: hda: Fix potential access overflow in beep helper ALSA: ice1724: Fix invalid access for enumerated ctl items ALSA: pcm: oss: Fix regression by buffer overflow fix ALSA: hda/realtek: Enable mute LED on an HP system ALSA: hda/realtek - a fake key event is triggered by running shutup ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256 ALSA: hda/realtek - Set principled PC Beep configuration for ALC256 ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups ALSA: hda/realtek - Add quirk for Lenovo Carbon X1 8th gen ALSA: hda/realtek - Add quirk for MSI GL63 media: venus: firmware: Ignore secure call error on first resume media: hantro: Read be32 words starting at every fourth byte media: ti-vpe: cal: fix disable_irqs to only the intended target media: ti-vpe: cal: fix a kernel oops when unloading module seccomp: Add missing compat_ioctl for notify acpi/x86: ignore unspecified bit positions in the ACPI global lock field ACPICA: Allow acpi_any_gpe_status_set() to skip one GPE ACPI: PM: s2idle: Refine active GPEs check thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n nvmet-tcp: fix maxh2cdata icresp parameter nvme-fc: Revert "add module to ops template to allow module references" efi/x86: Add TPM related EFI tables to unencrypted mapping checks PCI: pciehp: Fix indefinite wait on sysfs requests PCI/ASPM: Clear the correct bits when enabling L1 substates PCI: Add boot interrupt quirk mechanism for Xeon chipsets PCI: qcom: Fix the fixup of PCI_VENDOR_ID_QCOM PCI: endpoint: Fix for concurrent memory allocation in OB address region sched/fair: Fix enqueue_task_fair warning tpm: Don't make log failures fatal tpm: tpm1_bios_measurements_next should increase position index tpm: tpm2_bios_measurements_next should increase position index KEYS: reaching the keys quotas correctly cpu/hotplug: Ignore pm_wakeup_pending() for disable_nonboot_cpus() genirq/debugfs: Add missing sanity checks to interrupt injection irqchip/versatile-fpga: Apply clear-mask earlier io_uring: remove bogus RLIMIT_NOFILE check in file registration pstore: pstore_ftrace_seq_next should increase position index MIPS/tlbex: Fix LDDIR usage in setup_pw() for Loongson-3 MIPS: OCTEON: irq: Fix potential NULL pointer dereference PM / Domains: Allow no domain-idle-states DT property in genpd when parsing PM: sleep: wakeup: Skip wakeup_source_sysfs_remove() if device is not there ath9k: Handle txpower changes even when TPC is disabled signal: Extend exec_id to 64bits x86/tsc_msr: Use named struct initializers x86/tsc_msr: Fix MSR_FSB_FREQ mask for Cherry Trail devices x86/tsc_msr: Make MSR derived TSC frequency more accurate x86/entry/32: Add missing ASM_CLAC to general_protection entry platform/x86: asus-wmi: Support laptops where the first battery is named BATT KVM: nVMX: Properly handle userspace interrupt window request KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks KVM: s390: vsie: Fix delivery of addressing exceptions KVM: x86: Allocate new rmap and large page tracking when moving memslot KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support KVM: x86: Gracefully handle __vmalloc() failure during VM allocation KVM: VMX: Add a trampoline to fix VMREAD error handling KVM: VMX: fix crash cleanup when KVM wasn't used smb3: fix performance regression with setting mtime CIFS: Fix bug which the return value by asynchronous read is error mtd: spinand: Stop using spinand->oobbuf for buffering bad block markers mtd: spinand: Do not erase the block before writing a bad block marker btrfs: Don't submit any btree write bio if the fs has errors Btrfs: fix crash during unmount due to race with delayed inode workers btrfs: reloc: clean dirty subvols if we fail to start a transaction btrfs: set update the uuid generation as soon as possible btrfs: drop block from cache on error in relocation btrfs: fix missing file extent item for hole after ranged fsync btrfs: unset reloc control if we fail to recover btrfs: fix missing semaphore unlock in btrfs_sync_file btrfs: use nofs allocations for running delayed items remoteproc: qcom_q6v5_mss: Don't reassign mpss region on shutdown remoteproc: qcom_q6v5_mss: Reload the mba region on coredump remoteproc: Fix NULL pointer dereference in rproc_virtio_notify crypto: rng - Fix a refcounting bug in crypto_rng_reset() crypto: mxs-dcp - fix scatterlist linearization for hash erofs: correct the remaining shrink objects io_uring: honor original task RLIMIT_FSIZE mmc: sdhci-of-esdhc: fix esdhc_reset() for different controller versions powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init() tools: gpio: Fix out-of-tree build regression net: qualcomm: rmnet: Allow configuration updates to existing devices arm64: dts: allwinner: h6: Fix PMU compatible sched/core: Remove duplicate assignment in sched_tick_remote() arm64: dts: allwinner: h5: Fix PMU compatible mm, memcg: do not high throttle allocators based on wraparound dm writecache: add cond_resched to avoid CPU hangs dm integrity: fix a crash with unusually large tag size dm verity fec: fix memory leak in verity_fec_dtr dm clone: Add overflow check for number of regions dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions() XArray: Fix xas_pause for large multi-index entries xarray: Fix early termination of xas_for_each_marked crypto: caam/qi2 - fix chacha20 data size error crypto: caam - update xts sector size for large input length crypto: ccree - protect against empty or NULL scatterlists crypto: ccree - only try to map auth tag if needed crypto: ccree - dec auth tag size from cryptlen map scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point scsi: ufs: fix Auto-Hibern8 error detection scsi: lpfc: Fix lpfc_io_buf resource leak in lpfc_get_scsi_buf_s4 error path ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board arm64: dts: ti: k3-am65: Add clocks to dwc3 nodes arm64: armv8_deprecated: Fix undef_hook mask for thumb setend selftests: vm: drop dependencies on page flags from mlock2 tests selftests/vm: fix map_hugetlb length used for testing read and write selftests/powerpc: Add tlbie_test in .gitignore vfio: platform: Switch to platform_get_irq_optional() drm/i915/gem: Flush all the reloc_gpu batch drm/etnaviv: rework perfmon query infrastructure drm: Remove PageReserved manipulation from drm_pci_alloc drm/amdgpu/powerplay: using the FCLK DPM table to set the MCLK drm/amdgpu: unify fw_write_wait for new gfx9 asics powerpc/pseries: Avoid NULL pointer dereference when drmem is unavailable nfsd: fsnotify on rmdir under nfsd/clients/ NFS: Fix use-after-free issues in nfs_pageio_add_request() NFS: Fix a page leak in nfs_destroy_unlinked_subrequests() ext4: fix a data race at inode->i_blocks fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() ocfs2: no need try to truncate file beyond i_size perf tools: Support Python 3.8+ in Makefile s390/diag: fix display of diagnose call statistics Input: i8042 - add Acer Aspire 5738z to nomux list ftrace/kprobe: Show the maxactive number on kprobe_events clk: ingenic/jz4770: Exit with error if CGU init failed clk: ingenic/TCU: Fix round_rate returning error kmod: make request_module() return an error when autoloading is disabled cpufreq: powernv: Fix use-after-free hfsplus: fix crash and filesystem corruption when deleting files libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set ipmi: fix hung processes in __get_guid() xen/blkfront: fix memory allocation flags in blkfront_setup_indirect() powerpc/64/tm: Don't let userspace set regs->trap via sigreturn powerpc/fsl_booke: Avoid creating duplicate tlb1 entry powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs powerpc/64: Setup a paca before parsing device tree etc. powerpc/xive: Fix xmon support on the PowerNV platform powerpc/kprobes: Ignore traps that happened in real mode powerpc/64: Prevent stack protection in early boot scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug powerpc: Make setjmp/longjmp signature standard arm64: Always force a branch protection mode when the compiler has one dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone() dm clone: replace spin_lock_irqsave with spin_lock_irq dm clone: Fix handling of partial region discards dm clone: Add missing casts to prevent overflows and data corruption scsi: lpfc: Add registration for CPU Offline/Online events scsi: lpfc: Fix Fabric hostname registration if system hostname changes scsi: lpfc: Fix configuration of BB credit recovery in service parameters scsi: lpfc: Fix broken Credit Recovery after driver load Revert "drm/dp_mst: Remove VCPI while disabling topology mgr" drm/dp_mst: Fix clearing payload state on topology disable drm/amdgpu: fix gfx hang during suspend with video playback (v2) drm/i915/icl+: Don't enable DDI IO power on a TypeC port in TBT mode powerpc/kasan: Fix kasan_remap_early_shadow_ro() mmc: sdhci: Convert sdhci_set_timeout_irq() to non-static mmc: sdhci: Refactor sdhci_set_timeout() bpf: Fix tnum constraints for 32-bit comparisons mfd: dln2: Fix sanity checking for endpoints efi/x86: Fix the deletion of variables in mixed mode ASoC: stm32: sai: Add missing cleanup scsi: lpfc: fix inlining of lpfc_sli4_cleanup_poll_list() Linux 5.4.33 Change-Id: I25d67a0b4f9ddbf90cb9845c476c54b8d666e9e4 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	2020-04-18 16:06:58 +02:00
Thomas Gleixner	6ecc37daf6	cpu/hotplug: Ignore pm_wakeup_pending() for disable_nonboot_cpus() commit `e98eac6ff1` upstream. A recent change to freeze_secondary_cpus() which added an early abort if a wakeup is pending missed the fact that the function is also invoked for shutdown, reboot and kexec via disable_nonboot_cpus(). In case of disable_nonboot_cpus() the wakeup event needs to be ignored as the purpose is to terminate the currently running kernel. Add a 'suspend' argument which is only set when the freeze is in context of a suspend operation. If not set then an eventually pending wakeup event is ignored. Fixes: `a66d955e91` ("cpu/hotplug: Abort disabling secondary CPUs if wakeup is pending") Reported-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Pavankumar Kondeti <pkondeti@codeaurora.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/874kuaxdiz.fsf@nanos.tec.linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2020-04-17 10:50:11 +02:00
Greg Kroah-Hartman	835bd1de9c	Merge 5.4.22 into android-5.4 Changes in 5.4.22 core: Don't skip generic XDP program execution for cloned SKBs enic: prevent waking up stopped tx queues over watchdog reset net/smc: fix leak of kernel memory to user space net: dsa: tag_qca: Make sure there is headroom for tag net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS net/sched: flower: add missing validation of TCA_FLOWER_FLAGS drm/gma500: Fixup fbdev stolen size usage evaluation ath10k: Fix qmi init error handling wil6210: fix break that is never reached because of zero'ing of a retry counter drm/qxl: Complete exception handling in qxl_device_init() rcu/nocb: Fix dump_tree hierarchy print always active rcu: Fix missed wakeup of exp_wq waiters rcu: Fix data-race due to atomic_t copy-by-value f2fs: preallocate DIO blocks when forcing buffered_io f2fs: call f2fs_balance_fs outside of locked page media: meson: add missing allocation failure check on new_buf clk: meson: pll: Fix by 0 division in __pll_params_to_rate() cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev() brcmfmac: Fix use after free in brcmf_sdio_readframes() PCI: Fix pci_add_dma_alias() bitmask size drm/amd/display: Map ODM memory correctly when doing ODM combine leds: pca963x: Fix open-drain initialization ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT ALSA: ctl: allow TLV read operation for callback type of element in locked case gianfar: Fix TX timestamping with a stacked DSA driver pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs printk: fix exclusive_console replaying drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank() drm/msm/adreno: fix zap vs no-zap handling pxa168fb: Fix the function used to release some memory in an error handling path media: ov5640: Fix check for PLL1 exceeding max allowed rate media: i2c: mt9v032: fix enum mbus codes and frame sizes media: sun4i-csi: Deal with DRAM offset media: sun4i-csi: Fix data sampling polarity handling media: sun4i-csi: Fix [HV]sync polarity handling clk: at91: sam9x60: fix programmable clock prescaler powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number clk: meson: meson8b: make the CCF use the glitch-free mali mux gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap() iommu/vt-d: Fix off-by-one in PASID allocation x86/fpu: Deactivate FPU state after failure during state load char/random: silence a lockdep splat with printk() media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run() kernel/module: Fix memleak in module_add_modinfo_attrs() IB/core: Let IB core distribute cache update events pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins efi/x86: Map the entire EFI vendor string before copying it MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init() sparc: Add .exit.data section. net: ethernet: ixp4xx: Standard module init raid6/test: fix a compilation error uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol() drm/amdgpu/sriov: workaround on rev_id for Navi12 under sriov spi: fsl-lpspi: fix only one cs-gpio working drm/nouveau/nouveau: fix incorrect sizeof on args.src an args.dst usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe() usb: dwc2: Fix IN FIFO allocation clocksource/drivers/bcm2835_timer: Fix memory leak of timer drm/amd/display: Clear state after exiting fixed active VRR state kselftest: Minimise dependency of get_size on C library interfaces jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal ext4: fix deadlock allocating bio_post_read_ctx from mempool clk: ti: dra7: fix parent for gmac_clkctrl x86/sysfb: Fix check for bad VRAM size pwm: omap-dmtimer: Simplify error handling udf: Allow writing to 'Rewritable' partitions dmaengine: fsl-qdma: fix duplicated argument to && wan/hdlc_x25: fix skb handling s390/pci: Fix possible deadlock in recover_store() powerpc/iov: Move VF pdev fixup into pcibios_fixup_iov() tracing: Fix tracing_stat return values in error handling paths tracing: Fix very unlikely race of registering two stat tracers ARM: 8952/1: Disable kmemleak on XIP kernels ext4, jbd2: ensure panic when aborting with zero errno ath10k: Correct the DMA direction for management tx buffers rtw88: fix rate mask for 1SS chip brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362 selftests: settings: tests can be in subsubdirs rtc: i2c/spi: Avoid inclusion of REGMAP support when not needed drm/amd/display: Retrain dongles when SINK_COUNT becomes non-zero tracing: Simplify assignment parsing for hist triggers nbd: add a flush_workqueue in nbd_start_device KVM: s390: ENOTSUPP -> EOPNOTSUPP fixups Btrfs: keep pages dirty when using btrfs_writepage_fixup_worker drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store block, bfq: do not plug I/O for bfq_queues with no proc refs kconfig: fix broken dependency in randconfig-generated .config clk: qcom: Don't overwrite 'cfg' in clk_rcg2_dfs_populate_freq() clk: qcom: rcg2: Don't crash if our parent can't be found; return an error drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode bpf, sockhash: Synchronize_rcu before free'ing map drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table ath10k: correct the tlv len of ath10k_wmi_tlv_op_gen_config_pno_start drm/amdgpu: Ensure ret is always initialized when using SOC15_WAIT_ON_RREG drm/panel: simple: Add Logic PD Type 28 display support arm64: dts: rockchip: Fix NanoPC-T4 cooling maps modules: lockdep: Suppress suspicious RCU usage warning ASoC: intel: sof_rt5682: Add quirk for number of HDMI DAI's ASoC: intel: sof_rt5682: Add support for tgl-max98357a-rt5682 regulator: rk808: Lower log level on optional GPIOs being not available net/wan/fsl_ucc_hdlc: reject muram offsets above 64K NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu(). arm64: dts: allwinner: H6: Add PMU mode arm64: dts: allwinner: H5: Add PMU node arm: dts: allwinner: H3: Add PMU node opp: Free static OPPs on errors while adding them selinux: ensure we cleanup the internal AVC counters on error in avc_insert() arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core padata: validate cpumask without removed CPU during offline clk: imx: Add correct failure handling for clk based helpers ARM: exynos_defconfig: Bring back explicitly wanted options ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3 ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO PCI: iproc: Apply quirk_paxc_bridge() for module as well as built-in media: cx23885: Add support for AVerMedia CE310B PCI: Add generic quirk for increasing D3hot delay PCI: Increase D3 delay for AMD Ryzen5/7 XHCI controllers Revert "nfp: abm: fix memory leak in nfp_abm_u32_knode_replace" gpu/drm: ingenic: Avoid null pointer deference in plane atomic update selftests/net: make so_txtime more robust to timer variance media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling samples/bpf: Set -fno-stack-protector when building BPF programs r8169: check that Realtek PHY driver module is loaded fore200e: Fix incorrect checks of NULL pointer dereference netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status PCI: Add nr_devfns parameter to pci_add_dma_alias() PCI: Add DMA alias quirk for PLX PEX NTB b43legacy: Fix -Wcast-function-type ipw2x00: Fix -Wcast-function-type iwlegacy: Fix -Wcast-function-type rtlwifi: rtl_pci: Fix -Wcast-function-type orinoco: avoid assertion in case of NULL pointer drm/amdgpu: fix KIQ ring test fail in TDR of SRIOV clk: qcom: smd: Add missing bimc clock ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1 nfsd: Clone should commit src file metadata too scsi: ufs: Complete pending requests in host reset and restore path scsi: aic7xxx: Adjust indentation in ahc_find_syncrate crypto: inside-secure - add unspecified HAS_IOMEM dependency drm/mediatek: handle events when enabling/disabling crtc clk: renesas: rcar-gen3: Allow changing the RPC[D2] clocks ARM: dts: r8a7779: Add device node for ARM global timer selinux: ensure we cleanup the internal AVC counters on error in avc_update() scsi: lpfc: Fix: Rework setting of fdmi symbolic node name registration arm64: dts: qcom: db845c: Enable ath10k 8bit host-cap quirk iommu/amd: Check feature support bit before accessing MSI capability registers iommu/amd: Only support x2APIC with IVHD type 11h/40h iommu/iova: Silence warnings under memory pressure clk: actually call the clock init before any other callback of the clock dmaengine: Store module owner in dma_device struct dmaengine: imx-sdma: Fix memory leak bpf: Print error message for bpftool cgroup show net: phy: realtek: add logging for the RGMII TX delay configuration crypto: chtls - Fixed memory leak x86/vdso: Provide missing include file PM / devfreq: exynos-ppmu: Fix excessive stack usage PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency drm/fbdev: Fallback to non tiled mode if all tiles not present pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs reset: uniphier: Add SCSSI reset control for each channel ASoC: soc-topology: fix endianness issues fbdev: fix numbering of fbcon options RDMA/rxe: Fix error type of mmap_offset clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock ALSA: sh: Fix unused variable warnings clk: Use parent node pointer during registration if necessary clk: uniphier: Add SCSSI clock gate for each channel ALSA: hda/realtek - Apply mic mute LED quirk for Dell E7xx laptops, too ALSA: sh: Fix compile warning wrt const net: phy: fixed_phy: fix use-after-free when checking link GPIO tools lib api fs: Fix gcc9 stringop-truncation compilation error vfio/spapr/nvlink2: Skip unpinning pages on error exit ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one. ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch iommu/vt-d: Match CPU and IOMMU paging mode iommu/vt-d: Avoid sending invalid page response drm/amdkfd: Fix permissions of hang_hws mlx5: work around high stack usage with gcc RDMA/hns: Avoid printing address of mtt page drm: remove the newline for CRC source name. usb: dwc3: use proper initializers for property entries ARM: dts: stm32: Add power-supply for DSI panel on stm32f469-disco usbip: Fix unsafe unaligned pointer usage udf: Fix free space reporting for metadata and virtual partitions drm/mediatek: Add gamma property according to hardware capability staging: rtl8188: avoid excessive stack usage IB/hfi1: Add software counter for ctxt0 seq drop IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats soc/tegra: fuse: Correct straps' address for older Tegra124 device trees efi/x86: Don't panic or BUG() on non-critical error conditions rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls Input: edt-ft5x06 - work around first register access error bnxt: Detach page from page pool before sending up the stack x86/nmi: Remove irq_work from the long duration NMI handler wan: ixp4xx_hss: fix compile-testing on 64-bit clocksource: davinci: only enable clockevents once tim34 is initialized arm64: dts: rockchip: fix dwmmc clock name for px30 arm64: dts: rockchip: add reg property to brcmf sub-nodes ARM: dts: rockchip: add reg property to brcmf sub node for rk3188-bqedison2qc ALSA: usb-audio: Add boot quirk for MOTU M Series ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m raid6/test: fix a compilation warning tty: synclinkmp: Adjust indentation in several functions tty: synclink_gt: Adjust indentation in several functions misc: xilinx_sdfec: fix xsdfec_poll()'s return type visorbus: fix uninitialized variable access driver core: platform: Prevent resouce overflow from causing infinite loops driver core: Print device when resources present in really_probe() ASoC: SOF: Intel: hda-dai: fix compilation warning in pcm_prepare bpf: Return -EBADRQC for invalid map type in __bpf_tx_xdp_map vme: bridges: reduce stack usage drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new() drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler drm/nouveau/drm/ttm: Remove set but not used variable 'mem' drm/nouveau/fault/gv100-: fix memory leak on module unload dm thin: don't allow changing data device during thin-pool reload gpiolib: Set lockdep class for hierarchical irq domains drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add perf/imx_ddr: Fix cpu hotplug state cleanup usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue kbuild: remove *.tmp file when filechk fails iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE ALSA: usb-audio: unlock on error in probe f2fs: set I_LINKABLE early to avoid wrong access by vfs f2fs: free sysfs kobject scsi: ufs: pass device information to apply_dev_quirks scsi: ufs-mediatek: add apply_dev_quirks variant operation scsi: iscsi: Don't destroy session if there are outstanding connections crypto: essiv - fix AEAD capitalization and preposition use in help text ALSA: usb-audio: add implicit fb quirk for MOTU M Series RDMA/mlx5: Don't fake udata for kernel path arm64: lse: fix LSE atomics with LLVM's integrated assembler arm64: fix alternatives with LLVM's integrated assembler drm/amd/display: fixup DML dependencies EDAC/sifive: Fix return value check in ecc_register() KVM: PPC: Remove set but not used variable 'ra', 'rs', 'rt' arm64: dts: ti: k3-j721e-main: Add missing power-domains for smmu sched/core: Fix size of rq::uclamp initialization sched/topology: Assert non-NUMA topology masks don't (partially) overlap perf/x86/amd: Constrain Large Increment per Cycle events watchdog/softlockup: Enforce that timestamp is valid on boot debugobjects: Fix various data races ASoC: SOF: Intel: hda: Fix SKL dai count regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage f2fs: fix memleak of kobject x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional cmd64x: potential buffer overflow in cmd64x_program_timings() ide: serverworks: potential overflow in svwks_set_pio_mode() pwm: Remove set but not set variable 'pwm' btrfs: fix possible NULL-pointer dereference in integrity checks btrfs: safely advance counter when looking up bio csums btrfs: device stats, log when stats are zeroed module: avoid setting info->name early in case we can fall back to info->mod->name remoteproc: Initialize rproc_class before use regulator: core: Fix exported symbols to the exported GPL version irqchip/mbigen: Set driver .suppress_bind_attrs to avoid remove problems ALSA: hda/hdmi - add retry logic to parse_intel_hdmi() spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations kbuild: use -S instead of -E for precise cc-option test in Kconfig objtool: Fix ARCH=x86_64 build error x86/decoder: Add TEST opcode to Group3-2 s390: adjust -mpacked-stack support check for clang 10 s390/ftrace: generate traced function stack frame driver core: platform: fix u32 greater or equal to zero comparison bpf, btf: Always output invariant hit in pahole DWARF to BTF transform ALSA: hda - Add docking station support for Lenovo Thinkpad T420s sunrpc: Fix potential leaks in sunrpc_cache_unhash() drm/nouveau/mmu: fix comptag memory leak powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value btrfs: separate definition of assertion failure handlers btrfs: Fix split-brain handling when changing FSID to metadata uuid bcache: cached_dev_free needs to put the sb page bcache: rework error unwinding in register_bcache bcache: fix use-after-free in register_bcache() iommu/vt-d: Remove unnecessary WARN_ON_ONCE() alarmtimer: Make alarmtimer platform device child of RTC device selftests: bpf: Reset global state between reuseport test runs jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record jbd2: make sure ESHUTDOWN to be recorded in the journal superblock powerpc/pseries/lparcfg: Fix display of Maximum Memory selftests/eeh: Bump EEH wait time to 60s ARM: 8951/1: Fix Kexec compilation issue. ALSA: usb-audio: add quirks for Line6 Helix devices fw>=2.82 hostap: Adjust indentation in prism2_hostapd_add_sta rtw88: fix potential NULL skb access in TX ISR iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop cifs: fix unitialized variable poential problem with network I/O cache lock patch cifs: Fix mount options set in automount cifs: fix NULL dereference in match_prepath bpf: map_seq_next should always increase position index powerpc/mm: Don't log user reads to 0xffffffff ceph: check availability of mds cluster on mount after wait timeout rbd: work around -Wuninitialized warning drm/amd/display: do not allocate display_mode_lib unnecessarily irqchip/gic-v3: Only provision redistributors that are enabled in ACPI drm/nouveau/disp/nv50-: prevent oops when no channel method map provided char: hpet: Fix out-of-bounds read bug ftrace: fpid_next() should increase position index trigger_next should increase position index radeon: insert 10ms sleep in dce5_crtc_load_lut powerpc: Do not consider weak unresolved symbol relocations as bad btrfs: do not do delalloc reservation under page lock ocfs2: make local header paths relative to C files ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans() lib/scatterlist.c: adjust indentation in __sg_alloc_table reiserfs: prevent NULL pointer dereference in reiserfs_insert_item() bcache: fix memory corruption in bch_cache_accounting_clear() bcache: explicity type cast in bset_bkey_last() bcache: fix incorrect data type usage in btree_flush_write() irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL nvmet: Pass lockdep expression to RCU lists nvme-pci: remove nvmeq->tags iwlwifi: mvm: Fix thermal zone registration iwlwifi: mvm: Check the sta is not NULL in iwl_mvm_cfg_he_sta() asm-generic/tlb: add missing CONFIG symbol microblaze: Prevent the overflow of the start brd: check and limit max_part par drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_latency drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage NFS: Fix memory leaks help_next should increase position index i40e: Relax i40e_xsk_wakeup's return value when PF is busy cifs: log warning message (once) if out of disk space virtio_balloon: prevent pfn array overflow fuse: don't overflow LLONG_MAX with end offset mlxsw: spectrum_dpipe: Add missing error path s390/pci: Recover handle in clp_set_pci_fn() drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2) bcache: properly initialize 'path' and 'err' in register_bcache() rtc: Kconfig: select REGMAP_I2C when necessary Linux 5.4.22 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Iaeb3945493ecc81a0ae90ef87b19ceb2caf48164	2020-02-24 09:16:10 +01:00
Peter Zijlstra	c4d0a90b50	cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order [ Upstream commit `45178ac0ce` ] Paul reported a very sporadic, rcutorture induced, workqueue failure. When the planets align, the workqueue rescuer's self-migrate fails and then triggers a WARN for running a work on the wrong CPU. Tejun then figured that set_cpus_allowed_ptr()'s stop_one_cpu() call could be ignored! When stopper->enabled is false, stop_machine will insta complete the work, without actually doing the work. Worse, it will not WARN about this (we really should fix this). It turns out there is a small window where a freshly online'ed CPU is marked 'online' but doesn't yet have the stopper task running: BP AP bringup_cpu() __cpu_up(cpu, idle) --> start_secondary() ... cpu_startup_entry() bringup_wait_for_ap() wait_for_ap_thread() <-- cpuhp_online_idle() while (1) do_idle() ... available to run kthreads ... stop_machine_unpark() stopper->enable = true; Close this by moving the stop_machine_unpark() into cpuhp_online_idle(), such that the stopper thread is ready before we start the idle loop and schedule. Reported-by: "Paul E. McKenney" <paulmck@kernel.org> Debugged-by: Tejun Heo <tj@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: "Paul E. McKenney" <paulmck@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>	2020-02-24 08:36:23 +01:00
Greg Kroah-Hartman	ea962facf5	Merge 5.4.14 into android-5.4 Changes in 5.4.14 ARM: dts: meson8: fix the size of the PMU registers clk: qcom: gcc-sdm845: Add missing flag to votable GDSCs soc: amlogic: meson-ee-pwrc: propagate PD provider registration errors soc: amlogic: meson-ee-pwrc: propagate errors from pm_genpd_init() dt-bindings: reset: meson8b: fix duplicate reset IDs ARM: dts: imx6q-dhcom: fix rtc compatible arm64: dts: ls1028a: fix endian setting for dcfg arm64: dts: imx8mm: Change SDMA1 ahb clock for imx8mm bus: ti-sysc: Fix iterating over clocks clk: Don't try to enable critical clocks if prepare failed Revert "gpio: thunderx: Switch to GPIOLIB_IRQCHIP" arm64: dts: imx8mq-librem5-devkit: use correct interrupt for the magnetometer ASoC: msm8916-wcd-digital: Reset RX interpolation path after use ASoC: stm32: sai: fix possible circular locking ASoC: stm32: dfsdm: fix 16 bits record ASoC: msm8916-wcd-analog: Fix selected events for MIC BIAS External1 ASoC: msm8916-wcd-analog: Fix MIC BIAS Internal1 ARM: OMAP2+: Fix ti_sysc_find_one_clockdomain to check for to_clk_hw_omap ARM: dts: imx7ulp: fix reg of cpu node ARM: dts: imx6q-dhcom: Fix SGTL5000 VDDIO regulator connection ASoC: Intel: bytcht_es8316: Fix Irbis NB41 netbook quirk ALSA: dice: fix fallback from protocol extension into limited functionality ALSA: seq: Fix racy access for queue timer in proc read ALSA: firewire-tascam: fix corruption due to spin lock without restoration in SoftIRQ context ALSA: usb-audio: fix sync-ep altsetting sanity check arm64: dts: allwinner: a64: olinuxino: Fix SDIO supply regulator arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator arm64: dts: agilex/stratix10: fix pmu interrupt numbers Fix built-in early-load Intel microcode alignment clk: sunxi-ng: r40: Allow setting parent rate for external clock outputs block: fix an integer overflow in logical block size fuse: fix fuse_send_readpages() in the syncronous read case io_uring: only allow submit from owning task cpuidle: teo: Fix intervals[] array indexing bug ARM: dts: am571x-idk: Fix gpios property to have the correct gpio number ARM: davinci: select CONFIG_RESET_CONTROLLER perf: Correctly handle failed perf_get_aux_event() iio: adc: ad7124: Fix DT channel configuration iio: imu: st_lsm6dsx: Fix selection of ST_LSM6DS3_ID iio: light: vcnl4000: Fix scale for vcnl4040 iio: chemical: pms7003: fix unmet triggered buffer dependency iio: buffer: align the size of scan bytes to size of the largest element USB: serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx USB: serial: option: Add support for Quectel RM500Q USB: serial: opticon: fix control-message timeouts USB: serial: option: add support for Quectel RM500Q in QDL mode USB: serial: suppress driver bind attributes USB: serial: ch341: handle unbound port at reset_resume USB: serial: io_edgeport: handle unbound ports on URB completion USB: serial: io_edgeport: add missing active-port sanity check USB: serial: keyspan: handle unbound ports USB: serial: quatech2: handle unbound ports staging: comedi: ni_routes: fix null dereference in ni_find_route_source() staging: comedi: ni_routes: allow partial routing information scsi: fnic: fix invalid stack access scsi: mptfusion: Fix double fetch bug in ioctl ptrace: reintroduce usage of subjective credentials in ptrace_has_cap() mtd: rawnand: gpmi: Fix suspend/resume problem mtd: rawnand: gpmi: Restore nfc timing setup after suspend/resume usb: core: hub: Improved device recognition on remote wakeup cpu/SMT: Fix x86 link error without CONFIG_SYSFS x86/resctrl: Fix an imbalance in domain_remove_cpu() x86/CPU/AMD: Ensure clearing of SME/SEV features is maintained locking/rwsem: Fix kernel crash when spinning on RWSEM_OWNER_UNKNOWN perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_events x86/efistub: Disable paging at mixed mode entry s390/zcrypt: Fix CCA cipher key gen with clear key value function scsi: storvsc: Correctly set number of hardware queues for IDE disk mtd: spi-nor: Fix selection of 4-byte addressing opcodes on Spansion drm/i915: Add missing include file <linux/math64.h> x86/resctrl: Fix potential memory leak efi/earlycon: Fix write-combine mapping on x86 s390/setup: Fix secure ipl message clk: samsung: exynos5420: Keep top G3D clocks enabled perf hists: Fix variable name's inconsistency in hists__for_each() macro locking/lockdep: Fix buffer overrun problem in stack_trace[] perf report: Fix incorrectly added dimensions as switch perf data file mm/shmem.c: thp, shmem: fix conflict of above-47bit hint address and PMD alignment mm/huge_memory.c: thp: fix conflict of above-47bit hint address and PMD alignment mm: memcg/slab: fix percpu slab vmstats flushing mm: memcg/slab: call flush_memcg_workqueue() only if memcg workqueue is valid mm, debug_pagealloc: don't rely on static keys too early btrfs: rework arguments of btrfs_unlink_subvol btrfs: fix invalid removal of root ref btrfs: do not delete mismatched root refs btrfs: relocation: fix reloc_root lifespan and access btrfs: fix memory leak in qgroup accounting btrfs: check rw_devices, not num_devices for balance Btrfs: always copy scrub arguments back to user space mm/memory_hotplug: don't free usage map when removing a re-added early section mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio() mm: khugepaged: add trace status description for SCAN_PAGE_HAS_PRIVATE ARM: dts: imx6qdl-sabresd: Remove incorrect power supply assignment ARM: dts: imx6sx-sdb: Remove incorrect power supply assignment ARM: dts: imx6sl-evk: Remove incorrect power supply assignment ARM: dts: imx6sll-evk: Remove incorrect power supply assignment ARM: dts: imx6q-icore-mipi: Use 1.5 version of i.Core MX6DL ARM: dts: imx7: Fix Toradex Colibri iMX7S 256MB NAND flash support net: stmmac: 16KB buffer must be 16 byte aligned net: stmmac: Enable 16KB buffer size reset: Fix {of,devm}_reset_control_array_get kerneldoc return types tipc: fix potential hanging after b/rcast changing tipc: fix retrans failure due to wrong destination net: fix kernel-doc warning in <linux/netdevice.h> block: Fix the type of 'sts' in bsg_queue_rq() drm/amd/display: Reorder detect_edp_sink_caps before link settings read. bpf: Fix incorrect verifier simulation of ARSH under ALU32 bpf: Sockmap/tls, during free we may call tcp_bpf_unhash() in loop bpf: Sockmap, ensure sock lock held during tear down bpf: Sockmap/tls, push write_space updates through ulp updates bpf: Sockmap, skmsg helper overestimates push, pull, and pop bounds bpf: Sockmap/tls, msg_push_data may leave end mark in place bpf: Sockmap/tls, tls_sw can create a plaintext buf > encrypt buf bpf: Sockmap/tls, skmsg can have wrapped skmsg that needs extra chaining bpf: Sockmap/tls, fix pop data with SK_DROP return code i2c: tegra: Fix suspending in active runtime PM state i2c: tegra: Properly disable runtime PM on driver's probe error cfg80211: fix deadlocks in autodisconnect work cfg80211: fix memory leak in nl80211_probe_mesh_link cfg80211: fix memory leak in cfg80211_cqm_rssi_update cfg80211: fix page refcount issue in A-MSDU decap bpf/sockmap: Read psock ingress_msg before sk_receive_queue i2c: iop3xx: Fix memory leak in probe error path netfilter: fix a use-after-free in mtype_destroy() netfilter: arp_tables: init netns pointer in xt_tgdtor_param struct netfilter: nat: fix ICMP header corruption on ICMP errors netfilter: nft_tunnel: fix null-attribute check netfilter: nft_tunnel: ERSPAN_VERSION must not be null netfilter: nf_tables: remove WARN and add NLA_STRING upper limits netfilter: nf_tables: store transaction list locally while requesting module netfilter: nf_tables: fix flowtable list del corruption NFC: pn533: fix bulk-message timeout net: bpf: Don't leak time wait and request sockets bpftool: Fix printing incorrect pointer in btf_dump_ptr batman-adv: Fix DAT candidate selection on little endian systems macvlan: use skb_reset_mac_header() in macvlan_queue_xmit() hv_netvsc: Fix memory leak when removing rndis device net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key() net: dsa: tag_qca: fix doubled Tx statistics net: hns3: pad the short frame before sending to the hardware net: hns: fix soft lockup when there is not enough memory net: phy: dp83867: Set FORCE_LINK_GOOD to default after reset net/sched: act_ife: initalize ife->metalist earlier net: usb: lan78xx: limit size of local TSO packets net/wan/fsl_ucc_hdlc: fix out of bounds write on array utdm_info ptp: free ptp device pin descriptors properly r8152: add missing endpoint sanity check tcp: fix marked lost packets not being retransmitted bnxt_en: Fix NTUPLE firmware command failures. bnxt_en: Fix ipv6 RFS filter matching logic. bnxt_en: Do not treat DSN (Digital Serial Number) read failure as fatal. net: ethernet: ave: Avoid lockdep warning net: systemport: Fixed queue mapping in internal ring map net: dsa: sja1105: Don't error out on disabled ports with no phy-mode net: dsa: tag_gswip: fix typo in tagger name net: sched: act_ctinfo: fix memory leak net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec i40e: prevent memory leak in i40e_setup_macvlans drm/amdgpu: allow direct upload save restore list for raven2 sh_eth: check sh_eth_cpu_data::dual_port when dumping registers mlxsw: spectrum: Do not modify cloned SKBs during xmit mlxsw: spectrum: Wipe xstats.backlog of down ports mlxsw: spectrum_qdisc: Include MC TCs in Qdisc counters net: stmmac: selftests: Make it work in Synopsys AXS101 boards net: stmmac: selftests: Mark as fail when received VLAN ID != expected selftests: mlxsw: qos_mc_aware: Fix mausezahn invocation net: stmmac: selftests: Update status when disabling RSS net: stmmac: tc: Do not setup flower filtering if RSS is enabled devlink: Wait longer before warning about unset port type xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk dt-bindings: Add missing 'properties' keyword enclosing 'snps,tso' tcp: refine rule to allow EPOLLOUT generation under mem pressure irqchip: Place CONFIG_SIFIVE_PLIC into the menu arm64: dts: qcom: msm8998: Disable coresight by default cw1200: Fix a signedness bug in cw1200_load_firmware() arm64: dts: meson: axg: fix audio fifo reg size arm64: dts: meson: g12: fix audio fifo reg size arm64: dts: meson-gxl-s905x-khadas-vim: fix gpio-keys-polled node arm64: dts: renesas: r8a77970: Fix PWM3 arm64: dts: marvell: Add AP806-dual missing CPU clocks cfg80211: check for set_wiphy_params tick/sched: Annotate lockless access to last_jiffies_update arm64: dts: marvell: Fix CP110 NAND controller node multi-line comment alignment arm64: dts: renesas: r8a774a1: Remove audio port node arm64: dts: imx8mm-evk: Assigned clocks for audio plls arm64: dts: qcom: sdm845-cheza: delete zap-shader ARM: dts: imx6ul-kontron-n6310-s: Disable the snvs-poweroff driver arm64: dts: allwinner: a64: Re-add PMU node ARM: dts: dra7: fix cpsw mdio fck clock arm64: dts: juno: Fix UART frequency ARM: dts: Fix sgx sysconfig register for omap4 Revert "arm64: dts: juno: add dma-ranges property" mtd: devices: fix mchp23k256 read and write mtd: cfi_cmdset_0002: only check errors when ready in cfi_check_err_status() mtd: cfi_cmdset_0002: fix delayed error detection on HyperFlash um: Don't trace irqflags during shutdown um: virtio_uml: Disallow modular build reiserfs: fix handling of -EOPNOTSUPP in reiserfs_for_each_xattr scsi: esas2r: unlock on error in esas2r_nvram_read_direct() scsi: hisi_sas: Don't create debugfs dump folder twice scsi: hisi_sas: Set the BIST init value before enabling BIST scsi: qla4xxx: fix double free bug scsi: bnx2i: fix potential use after free scsi: target: core: Fix a pr_debug() argument scsi: lpfc: fix: Coverity: lpfc_get_scsi_buf_s3(): Null pointer dereferences scsi: hisi_sas: Return directly if init hardware failed scsi: scsi_transport_sas: Fix memory leak when removing devices scsi: qla2xxx: Fix qla2x00_request_irqs() for MSI scsi: qla2xxx: fix rports not being mark as lost in sync fabric scan scsi: core: scsi_trace: Use get_unaligned_be*() scsi: lpfc: Fix list corruption detected in lpfc_put_sgl_per_hdwq scsi: lpfc: Fix hdwq sgl locks and irq handling scsi: lpfc: Fix a kernel warning triggered by lpfc_get_sgl_per_hdwq() rtw88: fix potential read outside array boundary perf probe: Fix wrong address verification perf script: Allow --time with --reltime clk: sprd: Use IS_ERR() to validate the return value of syscon_regmap_lookup_by_phandle() clk: imx7ulp: Correct system clock source option #7 clk: imx7ulp: Correct DDR clock mux options regulator: ab8500: Remove SYSCLKREQ from enum ab8505_regulator_id hwmon: (pmbus/ibm-cffps) Switch LEDs to blocking brightness call hwmon: (pmbus/ibm-cffps) Fix LED blink behavior perf script: Fix --reltime with --time scsi: lpfc: use hdwq assigned cpu for allocation Linux 5.4.14 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I400bdf3be682df698c2477fbf869d5ad8ce300b5	2020-01-23 08:37:43 +01:00
Arnd Bergmann	b2a0788c52	cpu/SMT: Fix x86 link error without CONFIG_SYSFS commit `dc8d37ed30` upstream. When CONFIG_SYSFS is disabled, but CONFIG_HOTPLUG_SMT is enabled, the kernel fails to link: arch/x86/power/cpu.o: In function `hibernate_resume_nonboot_cpu_disable': (.text+0x38d): undefined reference to `cpuhp_smt_enable' arch/x86/power/hibernate.o: In function `arch_resume_nosmt': hibernate.c:(.text+0x291): undefined reference to `cpuhp_smt_enable' hibernate.c:(.text+0x29c): undefined reference to `cpuhp_smt_disable' Move the exported functions out of the #ifdef section into its own with the correct conditions. The patch that caused this is marked for stable backports, so this one may need to be backported as well. Fixes: `ec527c3180` ("x86/power: Fix 'nosmt' vs hibernation triple fault during resume") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jiri Kosina <jkosina@suse.cz> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191210195614.786555-1-arnd@arndb.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2020-01-23 08:22:36 +01:00
Greg Kroah-Hartman	32815416dd	Merge branch 'upstream-master' into android-mainline This is an intermediate (mid-week) merge of Linus's tree into android-mainline to take all of the "big" security fixes that went into there into the android-mainline tree to get testing happening sooner. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ie4d7914776ac1f917de0436061e46295ad919ead	2019-11-14 10:43:19 +08:00
Tyler Hicks	731dc9df97	cpu/speculation: Uninline and export CPU mitigations helpers A kernel module may need to check the value of the "mitigations=" kernel command line parameter as part of its setup when the module needs to perform software mitigations for a CPU flaw. Uninline and export the helper functions surrounding the cpu_mitigations enum to allow for their usage from a module. Lastly, privatize the enum and cpu_mitigations variable since the value of cpu_mitigations can be checked with the exported helper functions. Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2019-11-04 12:22:02 +01:00
Greg Kroah-Hartman	2cddf747e1	Merge 5.4-rc1-prerelease into android-mainline To make the 5.4-rc1 merge easier, merge at a prerelease point in time before the final release happens. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I052c6a28528e10cdda89b6a20d320ac7562266b8	2019-10-02 18:36:47 +02:00
Vitaly Kuznetsov	e1572f1d08	cpu/SMT: create and export cpu_smt_possible() KVM needs to know if SMT is theoretically possible, this means it is supported and not forcefully disabled ('nosmt=force'). Create and export cpu_smt_possible() answering this question. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	2019-09-24 13:37:28 +02:00
Greg Kroah-Hartman	bfa0399bc8	Merge Linus's 5.4-rc1-prerelease branch into android-mainline This merges Linus's tree as of commit `b41dae061b` ("Merge tag 'xfs-5.4-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux") into android-mainline. This "early" merge makes it easier to test and handle merge conflicts instead of having to wait until the "end" of the merge window and handle all 10000+ commits at once. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I6bebf55e5e2353f814e3c87f5033607b1ae5d812	2019-09-20 16:07:54 -07:00
Thomas Gleixner	0c09ab96fc	cpu/hotplug: Cache number of online CPUs Re-evaluating the bitmap wheight of the online cpus bitmap in every invocation of num_online_cpus() over and over is a pretty useless exercise. Especially when num_online_cpus() is used in code paths like the IPI delivery of x86 or the membarrier code. Cache the number of online CPUs in the core and just return the cached variable. The accessor function provides only a snapshot when used without protection against concurrent CPU hotplug. The storage needs to use an atomic_t because the kexec and reboot code (ab)use set_cpu_online() in their 'shutdown' handlers without any form of serialization as pointed out by Mathieu. Regular CPU hotplug usage is properly serialized. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1907091622590.1634@nanos.tec.linutronix.de	2019-07-25 15:48:01 +02:00
Thomas Gleixner	e797bda3fd	smp/hotplug: Track booted once CPUs in a cpumask The booted once information which is required to deal with the MCE broadcast issue on X86 correctly is stored in the per cpu hotplug state, which is perfectly fine for the intended purpose. X86 needs that information for supporting NMI broadcasting via shortcuts, but retrieving it from per cpu data is cumbersome. Move it to a cpumask so the information can be checked against the cpu_present_mask quickly. No functional change intended. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190722105219.818822855@linutronix.de	2019-07-25 15:47:37 +02:00
Greg Kroah-Hartman	37766c2946	Merge 5.3.0-rc1 into android-mainline Linus 5.3-rc1 release Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ic171e37d4c21ffa495240c5538852bbb5a9dcce8	2019-07-23 16:21:59 -07:00
Linus Torvalds	e0e86b111b	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull SMP/hotplug updates from Thomas Gleixner: "A small set of updates for SMP and CPU hotplug: - Abort disabling secondary CPUs in the freezer when a wakeup is pending instead of evaluating it only after all CPUs have been offlined. - Remove the shared annotation for the strict per CPU cfd_data in the smp function call core code. - Remove the return values of smp_call_function() and on_each_cpu() as they are unconditionally 0. Fixup the few callers which actually bothered to check the return value" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smp: Remove smp_call_function() and on_each_cpu() return values smp: Do not mark call_function_data as shared cpu/hotplug: Abort disabling secondary CPUs if wakeup is pending cpu/hotplug: Fix notify_cpu_starting() reference in bringup_wait_for_ap()	2019-07-08 10:39:56 -07:00
Greg Kroah-Hartman	96e821be4b	Merge 5.2-rc7 into android-mainline Linux 5.2-rc7 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	2019-07-02 13:15:34 -07:00
Eiichi Tsukata	33d4a5a7a5	cpu/hotplug: Fix out-of-bounds read when setting fail state Setting invalid value to /sys/devices/system/cpu/cpuX/hotplug/fail can control `struct cpuhp_step *sp` address, results in the following global-out-of-bounds read. Reproducer: # echo -2 > /sys/devices/system/cpu/cpu0/hotplug/fail KASAN report: BUG: KASAN: global-out-of-bounds in write_cpuhp_fail+0x2cd/0x2e0 Read of size 8 at addr ffffffff89734438 by task bash/1941 CPU: 0 PID: 1941 Comm: bash Not tainted 5.2.0-rc6+ #31 Call Trace: write_cpuhp_fail+0x2cd/0x2e0 dev_attr_store+0x58/0x80 sysfs_kf_write+0x13d/0x1a0 kernfs_fop_write+0x2bc/0x460 vfs_write+0x1e1/0x560 ksys_write+0x126/0x250 do_syscall_64+0xc1/0x390 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f05e4f4c970 The buggy address belongs to the variable: cpu_hotplug_lock+0x98/0xa0 Memory state around the buggy address: ffffffff89734300: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff89734380: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffff89734400: 00 00 00 00 fa fa fa fa 00 00 00 00 fa fa fa fa ^ ffffffff89734480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff89734500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Add a sanity check for the value written from user space. Fixes: `1db49484f2` ("smp/hotplug: Hotplug state fail injection") Signed-off-by: Eiichi Tsukata <devel@etsukata.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: peterz@infradead.org Link: https://lkml.kernel.org/r/20190627024732.31672-1-devel@etsukata.com	2019-06-27 09:34:04 +02:00
Geert Uytterhoeven	1bf7272028	cpu/speculation: Warn on unsupported mitigations= parameter Currently, if the user specifies an unsupported mitigation strategy on the kernel command line, it will be ignored silently. The code will fall back to the default strategy, possibly leaving the system more vulnerable than expected. This may happen due to e.g. a simple typo, or, for a stable kernel release, because not all mitigation strategies have been backported. Inform the user by printing a message. Fixes: `98af845294` ("cpu/speculation: Add 'mitigations=' cmdline option") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190516070935.22546-1-geert@linux-m68k.org	2019-06-26 16:56:21 +02:00
Pavankumar Kondeti	a66d955e91	cpu/hotplug: Abort disabling secondary CPUs if wakeup is pending When "deep" suspend is enabled, all CPUs except the primary CPU are frozen via CPU hotplug one by one. After all secondary CPUs are unplugged the wakeup pending condition is evaluated and if pending the suspend operation is aborted and the secondary CPUs are brought up again. CPU hotplug is a slow operation, so it makes sense to check for wakeup pending in the freezer loop before bringing down the next CPU. This improves the system suspend abort latency significantly. [ tglx: Massaged changelog and improved printk message ] Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: iri Kosina <jkosina@suse.cz> Cc: Mukesh Ojha <mojha@codeaurora.org> Cc: linux-pm@vger.kernel.org Link: https://lkml.kernel.org/r/1559536263-16472-1-git-send-email-pkondeti@codeaurora.org	2019-06-12 11:03:05 +02:00
Greg Kroah-Hartman	62f5ae536f	Merge 5.2-rc4 into android-mainline Linux 5.2-rc4 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	2019-06-09 09:18:13 +02:00
Jiri Kosina	ec527c3180	x86/power: Fix 'nosmt' vs hibernation triple fault during resume As explained in `0cc3cd2165` ("cpu/hotplug: Boot HT siblings at least once") we always, no matter what, have to bring up x86 HT siblings during boot at least once in order to avoid first MCE bringing the system to its knees. That means that whenever 'nosmt' is supplied on the kernel command-line, all the HT siblings are as a result sitting in mwait or cpudile after going through the online-offline cycle at least once. This causes a serious issue though when a kernel, which saw 'nosmt' on its commandline, is going to perform resume from hibernation: if the resume from the hibernated image is successful, cr3 is flipped in order to point to the address space of the kernel that is being resumed, which in turn means that all the HT siblings are all of a sudden mwaiting on address which is no longer valid. That results in triple fault shortly after cr3 is switched, and machine reboots. Fix this by always waking up all the SMT siblings before initiating the 'restore from hibernation' process; this guarantees that all the HT siblings will be properly carried over to the resumed kernel waiting in resume_play_dead(), and acted upon accordingly afterwards, based on the target kernel configuration. Symmetricaly, the resumed kernel has to push the SMT siblings to mwait again in case it has SMT disabled; this means it has to online all the siblings when resuming (so that they come out of hlt) and offline them again to let them reach mwait. Cc: 4.19+ <stable@vger.kernel.org> # v4.19+ Debugged-by: Thomas Gleixner <tglx@linutronix.de> Fixes: `0cc3cd2165` ("cpu/hotplug: Boot HT siblings at least once") Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	2019-06-03 12:02:03 +02:00
Jiri Kosina	f560201102	cpu/hotplug: Fix notify_cpu_starting() reference in bringup_wait_for_ap() bringup_wait_for_ap() comment references cpu_notify_starting(), but the function is actually called notify_cpu_starting(). Fix that. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1905282128100.1962@cbobk.fhfr.pm	2019-05-28 12:59:03 -07:00
Greg Kroah-Hartman	1226c72a32	Merge 5.2-rc1 into android-mainline Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	2019-05-20 20:17:24 +02:00
Linus Torvalds	a0e928ed7c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Ingo Molnar: "This cycle had the following changes: - Timer tracing improvements (Anna-Maria Gleixner) - Continued tasklet reduction work: remove the hrtimer_tasklet (Thomas Gleixner) - Fix CPU hotplug remove race in the tick-broadcast mask handling code (Thomas Gleixner) - Force upper bound for setting CLOCK_REALTIME, to fix ABI inconsistencies with handling values that are close to the maximum supported and the vagueness of when uptime related wraparound might occur. Make the consistent maximum the year 2232 across all relevant ABIs and APIs. (Thomas Gleixner) - various cleanups and smaller fixes" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick: Fix typos in comments tick/broadcast: Fix warning about undefined tick_broadcast_oneshot_offline() timekeeping: Force upper bound for setting CLOCK_REALTIME timer/trace: Improve timer tracing timer/trace: Replace deprecated vsprintf pointer extension %pf by %ps timer: Move trace point to get proper index tick/sched: Update tick_sched struct documentation tick: Remove outgoing CPU from broadcast masks timekeeping: Consistently use unsigned int for seqcount snapshot softirq: Remove tasklet_hrtimer xfrm: Replace hrtimer tasklet with softirq hrtimer mac80211_hwsim: Replace hrtimer tasklet with softirq hrtimer	2019-05-06 14:50:46 -07:00
Linus Torvalds	5a2bf1abbf	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug updates from Ingo Molnar: "Two changes in this cycle: - Make the /sys/devices/system/cpu/smt/* files available on all arches, so user space has a consistent way to detect whether SMT is enabled. - Sparse annotation fix" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smpboot: Place the __percpu annotation correctly cpu/hotplug: Create SMT sysfs interface for all arches	2019-05-06 14:44:49 -07:00
Linus Torvalds	e00d413575	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: "The main changes in this cycle were: - Make nohz housekeeping processing more permissive and less intrusive to isolated CPUs - Decouple CPU-bound workqueue acconting from the scheduler and move it into the workqueue code. - Optimize topology building - Better handle quota and period overflows - Add more RCU annotations - Comment updates, misc cleanups" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits) nohz_full: Allow the boot CPU to be nohz_full sched/isolation: Require a present CPU in housekeeping mask kernel/cpu: Allow non-zero CPU to be primary for suspend / kexec freeze power/suspend: Add function to disable secondaries for suspend sched/core: Allow the remote scheduler tick to be started on CPU0 sched/nohz: Run NOHZ idle load balancer on HK_FLAG_MISC CPUs sched/debug: Fix spelling mistake "logaritmic" -> "logarithmic" sched/topology: Update init_sched_domains() comment cgroup/cpuset: Update stale generate_sched_domains() comments sched/core: Check quota and period overflow at usec to nsec conversion sched/core: Handle overflow in cpu_shares_write_u64 sched/rt: Check integer overflow at usec to nsec conversion sched/core: Fix typo in comment sched/core: Make some functions static sched/core: Unify p->on_rq updates sched/core: Remove ttwu_activate() sched/core, workqueues: Distangle worker accounting from rq lock sched/fair: Remove unneeded prototype of capacity_of() sched/topology: Skip duplicate group rewrites in build_sched_groups() sched/topology: Fix build_sched_groups() comment ...	2019-05-06 14:31:50 -07:00
Linus Torvalds	0a499fc5c3	Merge branch 'core-speculation-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull speculation mitigation update from Ingo Molnar: "This adds the "mitigations=" bootline option, which offers a cross-arch set of options that will work on x86, PowerPC and s390 that will map to the arch specific option internally" * 'core-speculation-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: s390/speculation: Support 'mitigations=' cmdline option powerpc/speculation: Support 'mitigations=' cmdline option x86/speculation: Support 'mitigations=' cmdline option cpu/speculation: Add 'mitigations=' cmdline option	2019-05-06 13:01:16 -07:00
Todd Kjos	0f2cb7cf80	Merge branch 'linux-mainline' into android-mainline-tmp Change-Id: I4380c68c3474026a42ffa9f95c525f9a563ba7a3	2019-05-03 12:22:22 -07:00
Nicholas Piggin	9ca12ac04b	kernel/cpu: Allow non-zero CPU to be primary for suspend / kexec freeze This patch provides an arch option, ARCH_SUSPEND_NONZERO_CPU, to opt-in to allowing suspend to occur on one of the housekeeping CPUs rather than hardcoded CPU0. This will allow CPU0 to be a nohz_full CPU with a later change. It may be possible for platforms with hardware/firmware restrictions on suspend/wake effectively support this by handing off the final stage to CPU0 when kernel housekeeping is no longer required. Another option is to make housekeeping / nohz_full mask dynamic at runtime, but the complexity could not be justified at this time. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linuxppc-dev@lists.ozlabs.org Link: https://lkml.kernel.org/r/20190411033448.20842-4-npiggin@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2019-05-03 19:42:58 +02:00
Thierry Strudel	e6120dd58d	ANDROID: cpu: send KOBJ_ONLINE event when enabling cpus In case some sysfs nodes needs to be labeled with a different label than sysfs then user needs to be notified when a core is brought back online. Bug: 29359497 Bug: 120444461 Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91 Signed-off-by: Thierry Strudel <tstrudel@google.com>	2019-05-03 10:40:06 -07:00
Josh Poimboeuf	98af845294	cpu/speculation: Add 'mitigations=' cmdline option Keeping track of the number of mitigations for all the CPU speculation bugs has become overwhelming for many users. It's getting more and more complicated to decide which mitigations are needed for a given architecture. Complicating matters is the fact that each arch tends to have its own custom way to mitigate the same vulnerability. Most users fall into a few basic categories: a) they want all mitigations off; b) they want all reasonable mitigations on, with SMT enabled even if it's vulnerable; or c) they want all reasonable mitigations on, with SMT disabled if vulnerable. Define a set of curated, arch-independent options, each of which is an aggregation of existing options: - mitigations=off: Disable all mitigations. - mitigations=auto: [default] Enable all the default mitigations, but leave SMT enabled, even if it's vulnerable. - mitigations=auto,nosmt: Enable all the default mitigations, disabling SMT if needed by a mitigation. Currently, these options are placeholders which don't actually do anything. They will be fleshed out in upcoming patches. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jiri Kosina <jkosina@suse.cz> (on x86) Reviewed-by: Jiri Kosina <jkosina@suse.cz> Cc: Borislav Petkov <bp@alien8.de> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Waiman Long <longman@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Jon Masters <jcm@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-s390@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Tyler Hicks <tyhicks@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Steven Price <steven.price@arm.com> Cc: Phil Auld <pauld@redhat.com> Link: https://lkml.kernel.org/r/b07a8ef9b7c5055c3a4637c87d07c296d5016fe0.1555085500.git.jpoimboe@redhat.com	2019-04-17 21:37:28 +02:00
Josh Poimboeuf	de7b77e5bb	cpu/hotplug: Create SMT sysfs interface for all arches Make the /sys/devices/system/cpu/smt/* files available on all arches, so user space has a consistent way to detect whether SMT is enabled. The 'control' file now shows 'notimplemented' for architectures which don't yet have CONFIG_HOTPLUG_SMT. [ tglx: Make notimplemented a real state ] Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Waiman Long <longman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Link: https://lkml.kernel.org/r/469c2b98055f2c41e75748e06447d592a64080c9.1553635520.git.jpoimboe@redhat.com	2019-04-02 12:36:56 +02:00
Thomas Gleixner	206b92353c	cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n Tianyu reported a crash in a CPU hotplug teardown callback when booting a kernel which has CONFIG_HOTPLUG_CPU disabled with the 'nosmt' boot parameter. It turns out that the SMP=y CONFIG_HOTPLUG_CPU=n case has been broken forever in case that a bringup callback fails. Unfortunately this issue was not recognized when the CPU hotplug code was reworked, so the shortcoming just stayed in place. When a bringup callback fails, the CPU hotplug code rolls back the operation and takes the CPU offline. The 'nosmt' command line argument uses a bringup failure to abort the bringup of SMT sibling CPUs. This partial bringup is required due to the MCE misdesign on Intel CPUs. With CONFIG_HOTPLUG_CPU=y the rollback works perfectly fine, but CONFIG_HOTPLUG_CPU=n lacks essential mechanisms to exercise the low level teardown of a CPU including the synchronizations in various facilities like RCU, NOHZ and others. As a consequence the teardown callbacks which must be executed on the outgoing CPU within stop machine with interrupts disabled are executed on the control CPU in interrupt enabled and preemptible context causing the kernel to crash and burn. The pre state machine code has a different failure mode which is more subtle and resulting in a less obvious use after free crash because the control side frees resources which are still in use by the undead CPU. But this is not a x86 only problem. Any architecture which supports the SMP=y HOTPLUG_CPU=n combination suffers from the same issue. It's just less likely to be triggered because in 99.99999% of the cases all bringup callbacks succeed. The easy solution of making HOTPLUG_CPU mandatory for SMP is not working on all architectures as the following architectures have either no hotplug support at all or not all subarchitectures support it: alpha, arc, hexagon, openrisc, riscv, sparc (32bit), mips (partial). Crashing the kernel in such a situation is not an acceptable state either. Implement a minimal rollback variant by limiting the teardown to the point where all regular teardown callbacks have been invoked and leave the CPU in the 'dead' idle state. This has the following consequences: - the CPU is brought down to the point where the stop_machine takedown would happen. - the CPU stays there forever and is idle - The CPU is cleared in the CPU active mask, but not in the CPU online mask which is a legit state. - Interrupts are not forced away from the CPU - All facilities which only look at online mask would still see it, but that is the case during normal hotplug/unplug operations as well. It's just a (way) longer time frame. This will expose issues, which haven't been exposed before or only seldom, because now the normally transient state of being non active but online is a permanent state. In testing this exposed already an issue vs. work queues where the vmstat code schedules work on the almost dead CPU which ends up in an unbound workqueue and triggers 'preemtible context' warnings. This is not a problem of this change, it merily exposes an already existing issue. Still this is better than crashing fully without a chance to debug it. This is mainly thought as workaround for those architectures which do not support HOTPLUG_CPU. All others should enforce HOTPLUG_CPU for SMP. Fixes: `2e1a3483ce` ("cpu/hotplug: Split out the state walk into functions") Reported-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Konrad Wilk <konrad.wilk@oracle.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Mukesh Ojha <mojha@codeaurora.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Rik van Riel <riel@surriel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Micheal Kelley <michael.h.kelley@microsoft.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190326163811.503390616@linutronix.de	2019-03-28 13:34:58 +01:00
Thomas Gleixner	1b72d43237	tick: Remove outgoing CPU from broadcast masks Valentin reported that unplugging a CPU occasionally results in a warning in the tick broadcast code which is triggered when an offline CPU is in the broadcast mask. This happens because the outgoing CPU is not removing itself from the broadcast masks, especially not from the broadcast_force_mask. The removal happens on the control CPU after the outgoing CPU is dead. It's a long standing issue, but the warning is harmless. Rework the hotplug mechanism so that the outgoing CPU removes itself from the broadcast masks after disabling interrupts and removing itself from the online mask. Reported-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Valentin Schneider <valentin.schneider@arm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1903211540180.1784@nanos.tec.linutronix.de	2019-03-23 18:26:43 +01:00
Ingo Molnar	31fe3cbbf2	Merge tag 'v5.0-rc5' into locking/core to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org>	2019-02-04 08:57:24 +01:00
Josh Poimboeuf	b284909aba	cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM With the following commit: `73d5e2b472` ("cpu/hotplug: detect SMT disabled by BIOS") ... the hotplug code attempted to detect when SMT was disabled by BIOS, in which case it reported SMT as permanently disabled. However, that code broke a virt hotplug scenario, where the guest is booted with only primary CPU threads, and a sibling is brought online later. The problem is that there doesn't seem to be a way to reliably distinguish between the HW "SMT disabled by BIOS" case and the virt "sibling not yet brought online" case. So the above-mentioned commit was a bit misguided, as it permanently disabled SMT for both cases, preventing future virt sibling hotplugs. Going back and reviewing the original problems which were attempted to be solved by that commit, when SMT was disabled in BIOS: 1) /sys/devices/system/cpu/smt/control showed "on" instead of "notsupported"; and 2) vmx_vm_init() was incorrectly showing the L1TF_MSG_SMT warning. I'd propose that we instead consider #1 above to not actually be a problem. Because, at least in the virt case, it's possible that SMT wasn't disabled by BIOS and a sibling thread could be brought online later. So it makes sense to just always default the smt control to "on" to allow for that possibility (assuming cpuid indicates that the CPU supports SMT). The real problem is #2, which has a simple fix: change vmx_vm_init() to query the actual current SMT state -- i.e., whether any siblings are currently online -- instead of looking at the SMT "control" sysfs value. So fix it by: a) reverting the original "fix" and its followup fix: `73d5e2b472` ("cpu/hotplug: detect SMT disabled by BIOS") `bc2d8d262c` ("cpu/hotplug: Fix SMT supported evaluation") and b) changing vmx_vm_init() to query the actual current SMT state -- instead of the sysfs control value -- to determine whether the L1TF warning is needed. This also requires the 'sched_smt_present' variable to exported, instead of 'cpu_smt_control'. Fixes: `73d5e2b472` ("cpu/hotplug: detect SMT disabled by BIOS") Reported-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joe Mario <jmario@redhat.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kvm@vger.kernel.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/e3a85d585da28cc333ecbc1e78ee9216e6da9396.1548794349.git.jpoimboe@redhat.com	2019-01-30 19:27:00 +01:00
Zhenzhong Duan	34d66caf25	x86/speculation: Remove redundant arch_smt_update() invocation With commit `a74cfffb03` ("x86/speculation: Rework SMT state change"), arch_smt_update() is invoked from each individual CPU hotplug function. Therefore the extra arch_smt_update() call in the sysfs SMT control is redundant. Fixes: `a74cfffb03` ("x86/speculation: Rework SMT state change") Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <konrad.wilk@oracle.com> Cc: <dwmw@amazon.co.uk> Cc: <bp@suse.de> Cc: <srinivas.eeda@oracle.com> Cc: <peterz@infradead.org> Cc: <hpa@zytor.com> Link: https://lkml.kernel.org/r/e2e064f2-e8ef-42ca-bf4f-76b612964752@default	2019-01-29 22:20:24 +01:00
Valentin Schneider	ce48c457b9	cpu/hotplug: Mute hotplug lockdep during init Since we've had: commit `cb538267ea` ("jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked() operations") we've been getting some lockdep warnings during init, such as on HiKey960: [ 0.820495] WARNING: CPU: 4 PID: 0 at kernel/cpu.c:316 lockdep_assert_cpus_held+0x3c/0x48 [ 0.820498] Modules linked in: [ 0.820509] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G S 4.20.0-rc5-00051-g4cae42a #34 [ 0.820511] Hardware name: HiKey960 (DT) [ 0.820516] pstate: 600001c5 (nZCv dAIF -PAN -UAO) [ 0.820520] pc : lockdep_assert_cpus_held+0x3c/0x48 [ 0.820523] lr : lockdep_assert_cpus_held+0x38/0x48 [ 0.820526] sp : ffff00000a9cbe50 [ 0.820528] x29: ffff00000a9cbe50 x28: 0000000000000000 [ 0.820533] x27: 00008000b69e5000 x26: ffff8000bff4cfe0 [ 0.820537] x25: ffff000008ba69e0 x24: 0000000000000001 [ 0.820541] x23: ffff000008fce000 x22: ffff000008ba70c8 [ 0.820545] x21: 0000000000000001 x20: 0000000000000003 [ 0.820548] x19: ffff00000a35d628 x18: ffffffffffffffff [ 0.820552] x17: 0000000000000000 x16: 0000000000000000 [ 0.820556] x15: ffff00000958f848 x14: 455f3052464d4d34 [ 0.820559] x13: 00000000769dde98 x12: ffff8000bf3f65a8 [ 0.820564] x11: 0000000000000000 x10: ffff00000958f848 [ 0.820567] x9 : ffff000009592000 x8 : ffff00000958f848 [ 0.820571] x7 : ffff00000818ffa0 x6 : 0000000000000000 [ 0.820574] x5 : 0000000000000000 x4 : 0000000000000001 [ 0.820578] x3 : 0000000000000000 x2 : 0000000000000001 [ 0.820582] x1 : 00000000ffffffff x0 : 0000000000000000 [ 0.820587] Call trace: [ 0.820591] lockdep_assert_cpus_held+0x3c/0x48 [ 0.820598] static_key_enable_cpuslocked+0x28/0xd0 [ 0.820606] arch_timer_check_ool_workaround+0xe8/0x228 [ 0.820610] arch_timer_starting_cpu+0xe4/0x2d8 [ 0.820615] cpuhp_invoke_callback+0xe8/0xd08 [ 0.820619] notify_cpu_starting+0x80/0xb8 [ 0.820625] secondary_start_kernel+0x118/0x1d0 We've also had a similar warning in sched_init_smp() for every asymmetric system that would enable the sched_asym_cpucapacity static key, although that was singled out in: commit `40fa3780ba` ("sched/core: Take the hotplug lock in sched_init_smp()") Those warnings are actually harmless, since we cannot have hotplug operations at the time they appear. Instead of starting to sprinkle useless hotplug lock operations in the init codepaths, mute the warnings until they start warning about real problems. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: cai@gmx.us Cc: daniel.lezcano@linaro.org Cc: dietmar.eggemann@arm.com Cc: linux-arm-kernel@lists.infradead.org Cc: longman@redhat.com Cc: marc.zyngier@arm.com Cc: mark.rutland@arm.com Link: https://lkml.kernel.org/r/1545243796-23224-2-git-send-email-valentin.schneider@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2019-01-21 11:18:53 +01:00
Thomas Gleixner	a74cfffb03	x86/speculation: Rework SMT state change arch_smt_update() is only called when the sysfs SMT control knob is changed. This means that when SMT is enabled in the sysfs control knob the system is considered to have SMT active even if all siblings are offline. To allow finegrained control of the speculation mitigations, the actual SMT state is more interesting than the fact that siblings could be enabled. Rework the code, so arch_smt_update() is invoked from each individual CPU hotplug function, and simplify the update function while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Casey Schaufler <casey.schaufler@intel.com> Cc: Asit Mallick <asit.k.mallick@intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Jon Masters <jcm@redhat.com> Cc: Waiman Long <longman9394@gmail.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Dave Stewart <david.c.stewart@intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20181125185004.521974984@linutronix.de	2018-11-28 11:57:07 +01:00
Linus Torvalds	d82924c3b8	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 pti updates from Ingo Molnar: "The main changes: - Make the IBPB barrier more strict and add STIBP support (Jiri Kosina) - Micro-optimize and clean up the entry code (Andy Lutomirski) - ... plus misc other fixes" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Propagate information about RSB filling mitigation to sysfs x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation x86/speculation: Apply IBPB more strictly to avoid cross-process data leak x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant x86/CPU: Fix unused variable warning when !CONFIG_IA32_EMULATION x86/pti/64: Remove the SYSCALL64 entry trampoline x86/entry/64: Use the TSS sp2 slot for SYSCALL/SYSRET scratch space x86/entry/64: Document idtentry	2018-10-23 18:43:04 +01:00
Linus Torvalds	42f52e1c59	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: "The main changes are: - Migrate CPU-intense 'misfit' tasks on asymmetric capacity systems, to better utilize (much) faster 'big core' CPUs. (Morten Rasmussen, Valentin Schneider) - Topology handling improvements, in particular when CPU capacity changes and related load-balancing fixes/improvements (Morten Rasmussen) - ... plus misc other improvements, fixes and updates" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits) sched/completions/Documentation: Add recommendation for dynamic and ONSTACK completions sched/completions/Documentation: Clean up the document some more sched/completions/Documentation: Fix a couple of punctuation nits cpu/SMT: State SMT is disabled even with nosmt and without "=force" sched/core: Fix comment regarding nr_iowait_cpu() and get_iowait_load() sched/fair: Remove setting task's se->runnable_weight during PELT update sched/fair: Disable LB_BIAS by default sched/pelt: Fix warning and clean up IRQ PELT config sched/topology: Make local variables static sched/debug: Use symbolic names for task state constants sched/numa: Remove unused numa_stats::nr_running field sched/numa: Remove unused code from update_numa_stats() sched/debug: Explicitly cast sched_feat() to bool sched/core: Disable SD_PREFER_SIBLING on asymmetric CPU capacity domains sched/fair: Don't move tasks to lower capacity CPUs unless necessary sched/fair: Set rq->rd->overload when misfit sched/fair: Wrap rq->rd->overload accesses with READ/WRITE_ONCE() sched/core: Change root_domain->overload type to int sched/fair: Change 'prefer_sibling' type to bool sched/fair: Kick nohz balance if rq->misfit_task_load ...	2018-10-23 15:00:03 +01:00
Borislav Petkov	d0e7d14455	cpu/SMT: State SMT is disabled even with nosmt and without "=force" When booting with "nosmt=force" a message is issued into dmesg to confirm that SMT has been force-disabled but such a message is not issued when only "nosmt" is on the kernel command line. Fix that. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20181004172227.10094-1-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2018-10-05 10:20:31 +02:00
Jiri Kosina	53c613fe63	x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation STIBP is a feature provided by certain Intel ucodes / CPUs. This feature (once enabled) prevents cross-hyperthread control of decisions made by indirect branch predictors. Enable this feature if - the CPU is vulnerable to spectre v2 - the CPU supports SMT and has SMT siblings online - spectre_v2 mitigation autoselection is enabled (default) After some previous discussion, this leaves STIBP on all the time, as wrmsr on crossing kernel boundary is a no-no. This could perhaps later be a bit more optimized (like disabling it in NOHZ, experiment with disabling it in idle, etc) if needed. Note that the synchronization of the mask manipulation via newly added spec_ctrl_mutex is currently not strictly needed, as the only updater is already being serialized by cpu_add_remove_lock, but let's make this a little bit more future-proof. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: "WoodhouseDavid" <dwmw@amazon.co.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: "SchauflerCasey" <casey.schaufler@intel.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1809251438240.15880@cbobk.fhfr.pm	2018-09-26 14:26:52 +02:00
Peter Zijlstra	cb92173d1f	locking/lockdep, cpu/hotplug: Annotate AP thread Anybody trying to assert the cpu_hotplug_lock is held (lockdep_assert_cpus_held()) from AP callbacks will fail, because the lock is held by the BP. Stick in an explicit annotation in cpuhp_thread_fun() to make this work. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.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 Fixes: `cb538267ea` ("jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked() operations") Link: http://lkml.kernel.org/r/20180911095127.GT24082@hirez.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>	2018-09-11 20:01:03 +02:00
Thomas Gleixner	69fa6eb7d6	cpu/hotplug: Prevent state corruption on error rollback When a teardown callback fails, the CPU hotplug code brings the CPU back to the previous state. The previous state becomes the new target state. The rollback happens in undo_cpu_down() which increments the state unconditionally even if the state is already the same as the target. As a consequence the next CPU hotplug operation will start at the wrong state. This is easily to observe when __cpu_disable() fails. Prevent the unconditional undo by checking the state vs. target before incrementing state and fix up the consequently wrong conditional in the unplug code which handles the failure of the final CPU take down on the control CPU side. Fixes: `4dddfb5faa` ("smp/hotplug: Rewrite AP state machine core") Reported-by: Neeraj Upadhyay <neeraju@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Neeraj Upadhyay <neeraju@codeaurora.org> Cc: josh@joshtriplett.org Cc: peterz@infradead.org Cc: jiangshanlai@gmail.com Cc: dzickus@redhat.com Cc: brendan.jackman@arm.com Cc: malat@debian.org Cc: sramana@codeaurora.org Cc: linux-arm-msm@vger.kernel.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1809051419580.1416@nanos.tec.linutronix.de ----	2018-09-06 15:21:38 +02:00
Neeraj Upadhyay	f8b7530aa0	cpu/hotplug: Adjust misplaced smb() in cpuhp_thread_fun() The smp_mb() in cpuhp_thread_fun() is misplaced. It needs to be after the load of st->should_run to prevent reordering of the later load/stores w.r.t. the load of st->should_run. Fixes: `4dddfb5faa` ("smp/hotplug: Rewrite AP state machine core") Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infraded.org> Cc: josh@joshtriplett.org Cc: peterz@infradead.org Cc: jiangshanlai@gmail.com Cc: dzickus@redhat.com Cc: brendan.jackman@arm.com Cc: malat@debian.org Cc: mojha@codeaurora.org Cc: sramana@codeaurora.org Cc: linux-arm-msm@vger.kernel.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1536126727-11629-1-git-send-email-neeraju@codeaurora.org	2018-09-06 15:21:37 +02:00
Mukesh Ojha	6fb86d9720	cpu/hotplug: Remove skip_onerr field from cpuhp_step structure When notifiers were there, `skip_onerr` was used to avoid calling particular step startup/teardown callbacks in the CPU up/down rollback path, which made the hotplug asymmetric. As notifiers are gone now after the full state machine conversion, the `skip_onerr` field is no longer required. Remove it from the structure and its usage. Signed-off-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/1535439294-31426-1-git-send-email-mojha@codeaurora.org	2018-08-31 14:13:03 +02:00
Abel Vesa	269777aa53	cpu/hotplug: Non-SMP machines do not make use of booted_once Commit `0cc3cd2165` ("cpu/hotplug: Boot HT siblings at least once") breaks non-SMP builds. [ I suspect the 'bool' fields should just be made to be bitfields and be exposed regardless of configuration, but that's a separate cleanup that I'll leave to the owners of this file for later. - Linus ] Fixes: `0cc3cd2165` ("cpu/hotplug: Boot HT siblings at least once") Cc: Dave Hansen <dave.hansen@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Abel Vesa <abelvesa@linux.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2018-08-14 15:00:00 -07:00

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341 Commits