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[PATCH 4.1 000/202] 4.1.11-stable review

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  [PATCH 4.1 000/202] 4.1.11-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 011/202] target/iscsi: Fix np_ip bracket issue by removing np_ip Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 012/202] scsi: fix scsi_error_handler vs. scsi_host_dev_release race Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 005/202] kvm: factor out core eventfd assign/deassign logic Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 009/202] KVM: PPC: Book3S HV: Pass the correct trap argument to kvmhv_commence_exit Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 003/202] kvm: dont try to register to KVM_FAST_MMIO_BUS for non mmio eventfd Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 001/202] arm: KVM: Fix incorrect device to IPA mapping Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 031/202] ARM: 8425/1: kgdb: Dont try to stop the machine when setting breakpoints Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 007/202] arm: KVM: Disable virtual timer even if the guest is not using it Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 013/202] target: Attach EXTENDED_COPY local I/O descriptors to xcopy_pt_sess Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 028/202] ARM: fix Thumb2 signal handling when ARMv6 is enabled Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 030/202] windfarm: decrement client count when unregistering Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 027/202] hwmon: (nct6775) Swap STEP_UP_TIME and STEP_DOWN_TIME registers for most chips Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:30 +0200
    [PATCH 4.1 080/202] dm btree: add ref counting ops for the leaves of top level btrees Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 108/202] USB: whiteheat: fix potential null-deref at probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 065/202] ALSA: hda - Disable power_save_node for IDT 92HD73xx chips Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 082/202] USB: option: add ZTE PIDs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 138/202] irqchip/gic-v3-its: Add missing cache flushes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 134/202] dts: imx25: fix sd card gpio polarity specified in device tree Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 078/202] ath10k: fix dma_mapping_error() handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 125/202] batman-adv: fix kernel crash due to missing NULL checks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 111/202] usb: xhci: Clear XHCI_STATE_DYING on start Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 110/202] usb: xhci: lock mutex on xhci_stop Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 137/202] irqchip/atmel-aic5: Use per chip mask caches in mask/unmask() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 135/202] usb: chipidea: imx: fix a typo for imx6sx Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 109/202] xhci: give command abortion one more chance before killing xhci Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 079/202] svcrdma: Fix send_reply() scatter/gather set-up Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 095/202] Bluetooth: Delay check for conn->smp in smp_conn_security() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 128/202] mmc: dw_mmc: handle data blocks > than 4kB if IDMAC is used Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 122/202] ipvs: fix crash with sync protocol v0 and FTP Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 114/202] xhci: init command timeout timer earlier to avoid deleting it uninitialized Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 081/202] staging: ion: fix corruption of ion_import_dma_buf Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 130/202] mmc: sdhci-esdhc-imx: Do not break platform data boards Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 074/202] PCI: Fix devfn for VPD access through function 0 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 113/202] xhci: change xhci 1.0 only restrictions to support xhci 1.1 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 022/202] perf tools: Add empty Build files for architectures lacking them Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 107/202] drm/dp/mst: drop cancel work sync in the mstb destroy path (v2) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 126/202] batman-adv: protect tt_local_entry from concurrent delete events Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 136/202] cifs: use server timestamp for ntlmv2 authentication Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 123/202] ipvs: call skb_sender_cpu_clear Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 083/202] md/raid0: update queue parameter in a safer location. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 124/202] fbdev: select versatile helpers for the integrator Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 132/202] dts: imx51: fix sd card gpio polarity specified in device tree Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 133/202] dts: imx53: fix sd card gpio polarity specified in device tree Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 105/202] drm: Reject DRI1 hw lock ioctl functions for kms drivers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 049/202] leds/led-class: Add missing put_device() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 131/202] mmc: sdhci-esdhc-imx: fix cd regression for dt platform Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 062/202] ALSA: synth: Fix conflicting OSS device registration on AWE32 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 129/202] mmc: sdhci-esdhc-imx: Move mmc_of_parse() to the dt probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:40 +0200
    [PATCH 4.1 142/202] mtd: nand: sunxi: fix OOB handling in ->write_xxx() functions Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 189/202] nfs/filelayout: Fix NULL reference caused by double freeing of fh_array Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 077/202] dm crypt: constrain crypt devices max_segment_size to PAGE_SIZE Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 196/202] drivers/tty: require read access for controlling terminal Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 112/202] usb: xhci: exit early in xhci_setup_device() if were halted or dying Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 141/202] mtd: nand: sunxi: fix sunxi_nand_chips_cleanup() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 188/202] fix a braino in ovl_d_select_inode() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 184/202] genirq: Fix race in register_irq_proc() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 190/202] clk: ti: fix dual-registration of uart4_ick Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 104/202] drm/i915/bios: handle MIPI Sequence Block v3+ gracefully Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 191/202] namei: results of d_is_negative() should be checked after dentry revalidation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 04:50 +0200
    [PATCH 4.1 193/202] dm cache: fix NULL pointer when switching from cleaner policy Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:00 +0200
    [PATCH 4.1 192/202] dm: fix AB-BA deadlock in __dm_destroy() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:00 +0200
    [PATCH 4.1 186/202] overlay: Call ovl_drop_write() earlier in ovl_dentry_open() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:00 +0200
    [PATCH 4.1 117/202] sched/fair: Prevent throttling in early pick_next_task_fair() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 139/202] docs: update HOWTO for 3.x -> 4.x versioning Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 020/202] perf hists: Update the column width for the "srcline" sort key Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 116/202] Initialize msg/shm IPC objects before doing ipc_addid() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 021/202] perf stat: Get correct cpu id for print_aggr Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 115/202] usb: xhci: Add support for URB_ZERO_PACKET to bulk/sg transfers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:30 +0200
    [PATCH 4.1 018/202] perf/x86/intel: Fix constraint access Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:40 +0200
    [PATCH 4.1 019/202] perf tools: Fix copying of /proc/kcore Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:40 +0200
    [PATCH 4.1 200/202] mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 152/202] usb: chipidea: udc: using the correct stall implementation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 044/202] x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 187/202] overlayfs: Make f_path always point to the overlay and f_inode to the underlay Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 201/202] MIPS: Fix console output for Fulong2e system Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 183/202] igb: do not re-init SR-IOV during probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 045/202] x86/kexec: Fix kexec crash in syscall kexec_file_load() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 055/202] spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 05:50 +0200
    [PATCH 4.1 194/202] staging: speakup: fix speakup-r regression Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 168/202] powerpc/MSI: Fix race condition in tearing down MSI interrupts Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 197/202] serial: 8250: add uart_config entry for PORT_RT2880 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 153/202] usb: Use the USB_SS_MULT() macro to get the burst multiplier. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 154/202] usb: phy: phy-generic: Fix reset behaviour on legacy boot Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 146/202] pcmcia: sa11x0: fix missing clk_put() in sa11x0 socket drivers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 171/202] UBIFS: Kill unneeded locking in ubifs_init_security Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 155/202] usb: musb: cppi41: allow it to work again Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 144/202] device property: fix potential NULL pointer dereference Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 169/202] rsi: Fix possible leak when loading firmware Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 173/202] UBI: return ENOSPC if no enough space available Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 178/202] arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME regions Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 172/202] UBI: Validate data_size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 150/202] security: fix typo in security_task_prctl Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 199/202] intel_pstate: Fix overflow in busy_scaled due to long delay Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 167/202] tools lib traceevent: Fix string handling in heterogeneous arch environments Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 185/202] md/bitmap: dont pass -1 to bitmap_storage_alloc. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 181/202] m68k: Define asmlinkage_protect Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 151/202] usb: musb: dsps: fix polling in device-only mode Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 195/202] tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 149/202] regmap: debugfs: Dont bother actually printing when calculating max length Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 177/202] vfs: Test for and handle paths that are unreachable from their mnt_root Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 175/202] mmc: core: Dont return an error for CD/WP GPIOs when GPIOLIB is unset Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 148/202] regmap: debugfs: Ensure we dont underflow when printing access masks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 180/202] arm64: readahead: fault retry breaks mmap file read random detection Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 176/202] dcache: Handle escaped paths in prepend_path Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 174/202] mmc: sdhci: fix dma memory leak in sdhci_pre_req() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 182/202] net/xen-netfront: only napi_synchronize() if running Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 179/202] arm64: ftrace: fix function_graph tracer panic Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:00 +0200
    [PATCH 4.1 092/202] netfilter: nf_log: wait for rcu grace after logger unregistration Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 096/202] NFS: Do cleanup before resetting pageio read/write to mds Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 100/202] disabling oplocks/leases via module parm enable_oplocks broken for SMB3 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 087/202] netfilter: nf_tables: Use 32 bit addressing register from nft_type_to_reg() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 076/202] PCI: Clear IORESOURCE_UNSET when clipping a bridge window Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 147/202] ipr: Enable SIS pipe commands for SIS-32 devices. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 097/202] nfs: fix pg_test page count calculation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 091/202] netfilter: nftables: Do not run chains in the wrong network namespace Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 094/202] netfilter: nf_log: dont zap all loggers on unregister Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 118/202] [PATCH REPOST] serial/amba-pl011: Disable interrupts around TX softirq Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 140/202] mtd: pxa3xx_nand: add a default chunk size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 157/202] usb: Add device quirk for Logitech PTZ cameras Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 143/202] PM / AVS: rockchip-io: depend on CONFIG_POWER_AVS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 101/202] [SMB3] Do not fall back to SMBWriteX in set_file_size error cases Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 098/202] NFS: Fix a write performance regression Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 064/202] ALSA: hda - Apply SPDIF pin ctl to MacBookPro 12,1 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 120/202] ipvs: fix crash if scheduler is changed Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 158/202] USB: Add reset-resume quirk for two Plantronics usb headphones. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 088/202] netfilter: nf_conntrack: Support expectations in different zones Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 161/202] MIPS: dma-default: Fix 32-bit fall back to GFP_DMA Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 102/202] drm/qxl: only report first monitor as connected if we have no state Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 145/202] ath10k: reject 11b tx fragmentation configuration Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 093/202] netfilter: nft_compat: skip family comparison in case of NFPROTO_UNSPEC Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 156/202] USB: chaoskey read offset bug Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 160/202] cpufreq: dt: Tolerance applies on both sides of target voltage Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 119/202] ipvs: do not use random local source address for tunnels Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 121/202] ipvs: skb_orphan in case of forwarding Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 090/202] netfilter: nf_qeueue: Drop queue entries on nf_unregister_hook Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 099/202] [SMB3] Fix sec=krb5 on smb3 mounts Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:10 +0200
    [PATCH 4.1 051/202] s390/compat: correct uc_sigmask of the compat signal frame Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 059/202] ocfs2/dlm: fix deadlock when dispatch assert master Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 063/202] ALSA: hda: Add dock support for ThinkPad T550 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 048/202] x86/xen: Support kexec/kdump in HVM guests by doing a soft reset Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 060/202] mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 070/202] ASoC: sgtl5000: fix wrong register MIC_BIAS_VOLTAGE setup on probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 038/202] x86/apic: Serialize LVTT and TSC_DEADLINE writes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 073/202] Btrfs: update fix for read corruption of compressed and shared extents Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 040/202] x86/platform: Fix Geode LX timekeeping in the generic x86 build Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 057/202] mm: migrate: hugetlb: putback destination hugepage to active list Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 036/202] blockdev: dont set S_DAX for misaligned partitions Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 056/202] spi: spidev: fix possible NULL dereference Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 041/202] x86/paravirt: Replace the paravirt nop with a bona fide empty function Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 086/202] netfilter: nfnetlink: work around wrong endianess in res_id field Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 085/202] dm raid: fix round up of default region size Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 071/202] btrfs: skip waiting on ordered range for special files Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 058/202] lib/iommu-common.c: do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 069/202] ASoC: db1200: Fix DAI link format for db1300 and db1550 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 072/202] Btrfs: fix read corruption of compressed and shared extents Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 089/202] netfilter: ctnetlink: put back references to master ct and expect objects Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 067/202] ASoC: fix broken pxa SoC support Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 061/202] ALSA: hda - Disable power_save_node for Thinkpads Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 075/202] PCI: Use function 0 VPD for identical functions, regular VPD for others Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 050/202] sched/core: Fix TASK_DEAD race in finish_task_switch() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 068/202] ASoC: dwc: correct irq clear method Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 084/202] md/raid0: apply base queue limits *before* disk_stack_limits Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 043/202] Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 066/202] ASoC: pxa: pxa2xx-ac97: fix dma requestor lines Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 039/202] x86/alternatives: Make optimize_nops() interrupt safe and synced Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 042/202] x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:20 +0200
    [PATCH 4.1 037/202] dmaengine: dw: properly read DWC_PARAMS register Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 047/202] x86/mm: Set NX on gap between __ex_table and rodata Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 053/202] spi: Fix documentation of spi_alloc_master() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 016/202] target: Fix v4.1 UNIT_ATTENTION se_node_acl->device_list[] NULL pointer Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 024/202] perf: Fix AUX buffer refcounting Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 023/202] perf header: Fixup reading of HEADER_NRCPUS feature Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 052/202] s390/boot/decompression: disable floating point in decompressor Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 025/202] watchdog: sunxi: fix activation of system reset Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 046/202] x86/process: Add proper bound checks in 64bit get_wchan() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    [PATCH 4.1 054/202] spi: xtensa-xtfpga: fix register endianness Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-18 06:30 +0200
    Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review Guenter Roeck <linux@roeck-us.net> - 2015-10-19 06:20 +0200
      Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-19 17:20 +0200
        Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review Willy Tarreau <w@1wt.eu> - 2015-10-19 17:30 +0200
          Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review Guenter Roeck <linux@roeck-us.net> - 2015-10-20 03:30 +0200
    Re: [PATCH 4.1 000/202] 4.1.11-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2015-10-19 17:30 +0200

Page 9 of 10 — ← Prev page 1 … 7 8 [9] 10  Next page →

#1249944 — [PATCH 4.1 050/202] sched/core: Fix TASK_DEAD race in finish_task_switch()

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Zijlstra <peterz@infradead.org>

commit 95913d97914f44db2b81271c2e2ebd4d2ac2df83 upstream.

So the problem this patch is trying to address is as follows:

        CPU0                            CPU1

        context_switch(A, B)
                                        ttwu(A)
                                          LOCK A->pi_lock
                                          A->on_cpu == 0
        finish_task_switch(A)
          prev_state = A->state  <-.
          WMB                      |
          A->on_cpu = 0;           |
          UNLOCK rq0->lock         |
                                   |    context_switch(C, A)
                                   `--  A->state = TASK_DEAD
          prev_state == TASK_DEAD
            put_task_struct(A)
                                        context_switch(A, C)
                                        finish_task_switch(A)
                                          A->state == TASK_DEAD
                                            put_task_struct(A)

The argument being that the WMB will allow the load of A->state on CPU0
to cross over and observe CPU1's store of A->state, which will then
result in a double-drop and use-after-free.

Now the comment states (and this was true once upon a long time ago)
that we need to observe A->state while holding rq->lock because that
will order us against the wakeup; however the wakeup will not in fact
acquire (that) rq->lock; it takes A->pi_lock these days.

We can obviously fix this by upgrading the WMB to an MB, but that is
expensive, so we'd rather avoid that.

The alternative this patch takes is: smp_store_release(&A->on_cpu, 0),
which avoids the MB on some archs, but not important ones like ARM.

Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: manfred@colorfullife.com
Cc: will.deacon@arm.com
Fixes: e4a52bcb9a18 ("sched: Remove rq->lock from the first half of ttwu()")
Link: http://lkml.kernel.org/r/20150929124509.GG3816@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/sched/core.c  |   10 +++++-----
 kernel/sched/sched.h |    5 +++--
 2 files changed, 8 insertions(+), 7 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2217,11 +2217,11 @@ static struct rq *finish_task_switch(str
 	 * If a task dies, then it sets TASK_DEAD in tsk->state and calls
 	 * schedule one last time. The schedule call will never return, and
 	 * the scheduled task must drop that reference.
-	 * The test for TASK_DEAD must occur while the runqueue locks are
-	 * still held, otherwise prev could be scheduled on another cpu, die
-	 * there before we look at prev->state, and then the reference would
-	 * be dropped twice.
-	 *		Manfred Spraul <manfred@colorfullife.com>
+	 *
+	 * We must observe prev->state before clearing prev->on_cpu (in
+	 * finish_lock_switch), otherwise a concurrent wakeup can get prev
+	 * running on another CPU and we could rave with its RUNNING -> DEAD
+	 * transition, resulting in a double drop.
 	 */
 	prev_state = prev->state;
 	vtime_task_switch(prev);
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1068,9 +1068,10 @@ static inline void finish_lock_switch(st
 	 * After ->on_cpu is cleared, the task can be moved to a different CPU.
 	 * We must ensure this doesn't happen until the switch is completely
 	 * finished.
+	 *
+	 * Pairs with the control dependency and rmb in try_to_wake_up().
 	 */
-	smp_wmb();
-	prev->on_cpu = 0;
+	smp_store_release(&prev->on_cpu, 0);
 #endif
 #ifdef CONFIG_DEBUG_SPINLOCK
 	/* this is a valid case when another task releases the spinlock */


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#1249945 — [PATCH 4.1 068/202] ASoC: dwc: correct irq clear method

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yitian Bu <buyitian@gmail.com>

commit 4873867e5f2bd90faad861dd94865099fc3140f3 upstream.

from Designware I2S datasheet, tx/rx XRUN irq is cleared by
reading register TOR/ROR, rather than by writing into them.

Signed-off-by: Yitian Bu <yitian.bu@tangramtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/soc/dwc/designware_i2s.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -131,10 +131,10 @@ static inline void i2s_clear_irqs(struct
 
 	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		for (i = 0; i < 4; i++)
-			i2s_write_reg(dev->i2s_base, TOR(i), 0);
+			i2s_read_reg(dev->i2s_base, TOR(i));
 	} else {
 		for (i = 0; i < 4; i++)
-			i2s_write_reg(dev->i2s_base, ROR(i), 0);
+			i2s_read_reg(dev->i2s_base, ROR(i));
 	}
 }
 


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#1249946 — [PATCH 4.1 084/202] md/raid0: apply base queue limits *before* disk_stack_limits

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: NeilBrown <neilb@suse.com>

commit 66eefe5de11db1e0d8f2edc3880d50e7c36a9d43 upstream.

Calling e.g. blk_queue_max_hw_sectors() after calls to
disk_stack_limits() discards the settings determined by
disk_stack_limits().
So we need to make those calls first.

Fixes: 199dc6ed5179 ("md/raid0: update queue parameter in a safer location.")
Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/md/raid0.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -431,12 +431,6 @@ static int raid0_run(struct mddev *mddev
 		struct md_rdev *rdev;
 		bool discard_supported = false;
 
-		rdev_for_each(rdev, mddev) {
-			disk_stack_limits(mddev->gendisk, rdev->bdev,
-					  rdev->data_offset << 9);
-			if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
-				discard_supported = true;
-		}
 		blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
 		blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
 		blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
@@ -445,6 +439,12 @@ static int raid0_run(struct mddev *mddev
 		blk_queue_io_opt(mddev->queue,
 				 (mddev->chunk_sectors << 9) * mddev->raid_disks);
 
+		rdev_for_each(rdev, mddev) {
+			disk_stack_limits(mddev->gendisk, rdev->bdev,
+					  rdev->data_offset << 9);
+			if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
+				discard_supported = true;
+		}
 		if (!discard_supported)
 			queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
 		else


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#1249947 — [PATCH 4.1 043/202] Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: =?UTF-8?q?Dirk=20M=C3=BCller?= <dmueller@suse.com>

commit d2922422c48df93f3edff7d872ee4f3191fefb08 upstream.

The cpu feature flags are not ever going to change, so warning
everytime can cause a lot of kernel log spam
(in our case more than 10GB/hour).

The warning seems to only occur when nested virtualization is
enabled, so it's probably triggered by a KVM bug.  This is a
sensible and safe change anyway, and the KVM bug fix might not
be suitable for stable releases anyway.

Signed-off-by: Dirk Mueller <dmueller@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kvm/svm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -512,7 +512,7 @@ static void skip_emulated_instruction(st
 	struct vcpu_svm *svm = to_svm(vcpu);
 
 	if (svm->vmcb->control.next_rip != 0) {
-		WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
+		WARN_ON_ONCE(!static_cpu_has(X86_FEATURE_NRIPS));
 		svm->next_rip = svm->vmcb->control.next_rip;
 	}
 


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#1249948 — [PATCH 4.1 066/202] ASoC: pxa: pxa2xx-ac97: fix dma requestor lines

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Robert Jarzmik <robert.jarzmik@free.fr>

commit 8811191fdf7ed02ee07cb8469428158572d355a2 upstream.

PCM receive and transmit DMA requestor lines were reverted, breaking the
PCM playback interface for PXA platforms using the sound/soc/ variant
instead of the sound/arm variant.

The commit below shows the inversion in the requestor lines.

Fixes: d65a14587a9b ("ASoC: pxa: use snd_dmaengine_dai_dma_data")
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/soc/pxa/pxa2xx-ac97.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -49,7 +49,7 @@ static struct snd_ac97_bus_ops pxa2xx_ac
 	.reset	= pxa2xx_ac97_cold_reset,
 };
 
-static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 12;
+static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 11;
 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
 	.addr		= __PREG(PCDR),
 	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,
@@ -57,7 +57,7 @@ static struct snd_dmaengine_dai_dma_data
 	.filter_data	= &pxa2xx_ac97_pcm_stereo_in_req,
 };
 
-static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 11;
+static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 12;
 static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
 	.addr		= __PREG(PCDR),
 	.addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES,


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#1249949 — [PATCH 4.1 039/202] x86/alternatives: Make optimize_nops() interrupt safe and synced

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Gleixner <tglx@linutronix.de>

commit 66c117d7fa2ae429911e60d84bf31a90b2b96189 upstream.

Richard reported the following crash:

[    0.036000] BUG: unable to handle kernel paging request at 55501e06
[    0.036000] IP: [<c0aae48b>] common_interrupt+0xb/0x38
[    0.036000] Call Trace:
[    0.036000]  [<c0409c80>] ? add_nops+0x90/0xa0
[    0.036000]  [<c040a054>] apply_alternatives+0x274/0x630

Chuck decoded:

 "  0:   8d 90 90 83 04 24       lea    0x24048390(%eax),%edx
    6:   80 fc 0f                cmp    $0xf,%ah
    9:   a8 0f                   test   $0xf,%al
 >> b:   a0 06 1e 50 55          mov    0x55501e06,%al
   10:   57                      push   %edi
   11:   56                      push   %esi

 Interrupt 0x30 occurred while the alternatives code was replacing the
 initial 0x90,0x90,0x90 NOPs (from the ASM_CLAC macro) with the
 optimized version, 0x8d,0x76,0x00. Only the first byte has been
 replaced so far, and it makes a mess out of the insn decoding."

optimize_nops() is buggy in two aspects:

- It's not disabling interrupts across the modification
- It's lacking a sync_core() call

Add both.

Fixes: 4fd4b6e5537c 'x86/alternatives: Use optimized NOPs for padding'
Reported-and-tested-by: "Richard W.M. Jones" <rjones@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard W.M. Jones <rjones@redhat.com>
Cc: Chuck Ebbert <cebbert.lkml@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1509031232340.15006@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/alternative.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -325,10 +325,15 @@ done:
 
 static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
 {
+	unsigned long flags;
+
 	if (instr[0] != 0x90)
 		return;
 
+	local_irq_save(flags);
 	add_nops(instr + (a->instrlen - a->padlen), a->padlen);
+	sync_core();
+	local_irq_restore(flags);
 
 	DUMP_BYTES(instr, a->instrlen, "%p: [%d:%d) optimized NOPs: ",
 		   instr, a->instrlen - a->padlen, a->padlen);


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#1249950 — [PATCH 4.1 042/202] x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Lutomirski <luto@kernel.org>

commit 83c133cf11fb0e68a51681447e372489f052d40e upstream.

The NMI entry code that switches to the normal kernel stack needs to
be very careful not to clobber any extra stack slots on the NMI
stack.  The code is fine under the assumption that SWAPGS is just a
normal instruction, but that assumption isn't really true.  Use
SWAPGS_UNSAFE_STACK instead.

This is part of a fix for some random crashes that Sasha saw.

Fixes: 9b6e6a8334d5 ("x86/nmi/64: Switch stacks on userspace NMI entry")
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Link: http://lkml.kernel.org/r/974bc40edffdb5c2950a5c4977f821a446b76178.1442791737.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/entry_64.S |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1456,9 +1456,12 @@ ENTRY(nmi)
 	 * we don't want to enable interrupts, because then we'll end
 	 * up in an awkward situation in which IRQs are on but NMIs
 	 * are off.
+	 *
+	 * We also must not push anything to the stack before switching
+	 * stacks lest we corrupt the "NMI executing" variable.
 	 */
 
-	SWAPGS
+	SWAPGS_UNSAFE_STACK
 	cld
 	movq	%rsp, %rdx
 	movq	PER_CPU_VAR(kernel_stack), %rsp


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#1249955 — [PATCH 4.1 037/202] dmaengine: dw: properly read DWC_PARAMS register

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 6bea0f6d1c47b07be88dfd93f013ae05fcb3d8bf upstream.

In case we have less than maximum allowed channels (8) and autoconfiguration is
enabled the DWC_PARAMS read is wrong because it uses different arithmetic to
what is needed for channel priority setup.

Re-do the caclulations properly. This now works on AVR32 board well.

Fixes: fed2574b3c9f (dw_dmac: introduce software emulation of LLP transfers)
Cc: yitian.bu@tangramtek.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/dma/dw/core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -1591,7 +1591,6 @@ int dw_dma_probe(struct dw_dma_chip *chi
 	INIT_LIST_HEAD(&dw->dma.channels);
 	for (i = 0; i < nr_channels; i++) {
 		struct dw_dma_chan	*dwc = &dw->chan[i];
-		int			r = nr_channels - i - 1;
 
 		dwc->chan.device = &dw->dma;
 		dma_cookie_init(&dwc->chan);
@@ -1603,7 +1602,7 @@ int dw_dma_probe(struct dw_dma_chip *chi
 
 		/* 7 is highest priority & 0 is lowest. */
 		if (pdata->chan_priority == CHAN_PRIORITY_ASCENDING)
-			dwc->priority = r;
+			dwc->priority = nr_channels - i - 1;
 		else
 			dwc->priority = i;
 
@@ -1622,6 +1621,7 @@ int dw_dma_probe(struct dw_dma_chip *chi
 		/* Hardware configuration */
 		if (autocfg) {
 			unsigned int dwc_params;
+			unsigned int r = DW_DMA_MAX_NR_CHANNELS - i - 1;
 			void __iomem *addr = chip->regs + r * sizeof(u32);
 
 			dwc_params = dma_read_byaddr(addr, DWC_PARAMS);


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#1249956 — [PATCH 4.1 047/202] x86/mm: Set NX on gap between __ex_table and rodata

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stephen Smalley <sds@tycho.nsa.gov>

commit ab76f7b4ab2397ffdd2f1eb07c55697d19991d10 upstream.

Unused space between the end of __ex_table and the start of
rodata can be left W+x in the kernel page tables.  Extend the
setting of the NX bit to cover this gap by starting from
text_end rather than rodata_start.

  Before:
  ---[ High Kernel Mapping ]---
  0xffffffff80000000-0xffffffff81000000          16M                               pmd
  0xffffffff81000000-0xffffffff81600000           6M     ro         PSE     GLB x  pmd
  0xffffffff81600000-0xffffffff81754000        1360K     ro                 GLB x  pte
  0xffffffff81754000-0xffffffff81800000         688K     RW                 GLB x  pte
  0xffffffff81800000-0xffffffff81a00000           2M     ro         PSE     GLB NX pmd
  0xffffffff81a00000-0xffffffff81b3b000        1260K     ro                 GLB NX pte
  0xffffffff81b3b000-0xffffffff82000000        4884K     RW                 GLB NX pte
  0xffffffff82000000-0xffffffff82200000           2M     RW         PSE     GLB NX pmd
  0xffffffff82200000-0xffffffffa0000000         478M                               pmd

  After:
  ---[ High Kernel Mapping ]---
  0xffffffff80000000-0xffffffff81000000          16M                               pmd
  0xffffffff81000000-0xffffffff81600000           6M     ro         PSE     GLB x  pmd
  0xffffffff81600000-0xffffffff81754000        1360K     ro                 GLB x  pte
  0xffffffff81754000-0xffffffff81800000         688K     RW                 GLB NX pte
  0xffffffff81800000-0xffffffff81a00000           2M     ro         PSE     GLB NX pmd
  0xffffffff81a00000-0xffffffff81b3b000        1260K     ro                 GLB NX pte
  0xffffffff81b3b000-0xffffffff82000000        4884K     RW                 GLB NX pte
  0xffffffff82000000-0xffffffff82200000           2M     RW         PSE     GLB NX pmd
  0xffffffff82200000-0xffffffffa0000000         478M                               pmd

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443704662-3138-1-git-send-email-sds@tycho.nsa.gov
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/mm/init_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1132,7 +1132,7 @@ void mark_rodata_ro(void)
 	 * has been zapped already via cleanup_highmem().
 	 */
 	all_end = roundup((unsigned long)_brk_end, PMD_SIZE);
-	set_memory_nx(rodata_start, (all_end - rodata_start) >> PAGE_SHIFT);
+	set_memory_nx(text_end, (all_end - text_end) >> PAGE_SHIFT);
 
 	rodata_test();
 


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#1249961 — [PATCH 4.1 053/202] spi: Fix documentation of spi_alloc_master()

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

commit a394d635193b641f2c86ead5ada5b115d57c51f8 upstream.

Actually, spi_master_put() after spi_alloc_master() must _not_ be followed
by kfree(). The memory is already freed with the call to spi_master_put()
through spi_master_class, which registers a release function. Calling both
spi_master_put() and kfree() results in often nasty (and delayed) crashes
elsewhere in the kernel, often in the networking stack.

This reverts commit eb4af0f5349235df2e4a5057a72fc8962d00308a.

Link to patch and concerns: https://lkml.org/lkml/2012/9/3/269
or
http://lkml.iu.edu/hypermail/linux/kernel/1209.0/00790.html

Alexey Klimov: This revert becomes valid after
94c69f765f1b4a658d96905ec59928e3e3e07e6a when spi-imx.c
has been fixed and there is no need to call kfree() so comment
for spi_alloc_master() should be fixed.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spi/spi.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1427,8 +1427,7 @@ static struct class spi_master_class = {
  *
  * The caller is responsible for assigning the bus number and initializing
  * the master's methods before calling spi_register_master(); and (after errors
- * adding the device) calling spi_master_put() and kfree() to prevent a memory
- * leak.
+ * adding the device) calling spi_master_put() to prevent a memory leak.
  */
 struct spi_master *spi_alloc_master(struct device *dev, unsigned size)
 {


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#1249963 — [PATCH 4.1 016/202] target: Fix v4.1 UNIT_ATTENTION se_node_acl->device_list[] NULL pointer

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch fixes a v4.1 only regression bug as reported by Martin
where UNIT_ATTENTION checking for pre v4.2-rc1 RCU conversion code
legacy se_node_acl->device_list[] was hitting a NULL pointer
dereference in:

[ 1858.639654] CPU: 2 PID: 1293 Comm: kworker/2:1 Tainted: G          I 4.1.6-fixxcopy+ #1
[ 1858.639699] Hardware name: Dell Inc. PowerEdge R410/0N83VF, BIOS 1.11.0 07/20/2012
[ 1858.639747] Workqueue: xcopy_wq target_xcopy_do_work [target_core_mod]
[ 1858.639782] task: ffff880036f0cbe0 ti: ffff880317940000 task.ti: ffff880317940000
[ 1858.639822] RIP: 0010:[<ffffffffa01d3774>]  [<ffffffffa01d3774>] target_scsi3_ua_check+0x24/0x60 [target_core_mod]
[ 1858.639884] RSP: 0018:ffff880317943ce0  EFLAGS: 00010282
[ 1858.639913] RAX: 0000000000000000 RBX: ffff880317943dc0 RCX: 0000000000000000
[ 1858.639950] RDX: 0000000000000000 RSI: ffff880317943dd0 RDI: ffff88030eaee408
[ 1858.639987] RBP: ffff88030eaee408 R08: 0000000000000001 R09: 0000000000000001
[ 1858.640025] R10: 0000000000000000 R11: 00000000000706e0 R12: ffff880315e0a000
[ 1858.640062] R13: ffff88030eaee408 R14: 0000000000000001 R15: ffff88030eaee408
[ 1858.640100] FS:  0000000000000000(0000) GS:ffff880322e80000(0000) knlGS:0000000000000000
[ 1858.640143] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1858.640173] CR2: 0000000000000000 CR3: 000000000180d000 CR4: 00000000000006e0
[ 1858.640210] Stack:
[ 1858.640223]  ffffffffa01cadfa ffff88030eaee400 ffff880318e7c340 ffff880315e0a000
[ 1858.640267]  ffffffffa01d8c25 ffff8800cae809e0 0000000000000400 0000000000000400
[ 1858.640310]  ffff880318e7c3d0 0000000006b75800 0000000000080000 ffff88030eaee400
[ 1858.640354] Call Trace:
[ 1858.640379]  [<ffffffffa01cadfa>] ? target_setup_cmd_from_cdb+0x13a/0x2c0 [target_core_mod]
[ 1858.640429]  [<ffffffffa01d8c25>] ? target_xcopy_setup_pt_cmd+0x85/0x320 [target_core_mod]
[ 1858.640479]  [<ffffffffa01d9424>] ? target_xcopy_do_work+0x264/0x700 [target_core_mod]
[ 1858.640526]  [<ffffffff810ac3a0>] ? pick_next_task_fair+0x720/0x8f0
[ 1858.640562]  [<ffffffff8108b3fb>] ? process_one_work+0x14b/0x430
[ 1858.640595]  [<ffffffff8108bf5b>] ? worker_thread+0x6b/0x560
[ 1858.640627]  [<ffffffff8108bef0>] ? rescuer_thread+0x390/0x390
[ 1858.640661]  [<ffffffff810913b3>] ? kthread+0xd3/0xf0
[ 1858.640689]  [<ffffffff810912e0>] ? kthread_create_on_node+0x180/0x180

Also, check for the same se_node_acl->device_list[] during EXTENDED_COPY
operation as a non-holding persistent reservation port.

Reported-by: Martin Svec <martin,svec@zoner.cz>
Tested-by: Martin Svec <martin,svec@zoner.cz>
Cc: Martin Svec <martin,svec@zoner.cz>
Cc: Alex Gorbachev <ag@iss-integration.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/target/target_core_pr.c |    3 +++
 drivers/target/target_core_ua.c |    8 ++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -328,6 +328,9 @@ static int core_scsi3_pr_seq_non_holder(
 	int legacy = 0; /* Act like a legacy device and return
 			 * RESERVATION CONFLICT on some CDBs */
 
+	if (!se_sess->se_node_acl->device_list)
+		return;
+
 	se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
 	/*
 	 * Determine if the registration should be ignored due to
--- a/drivers/target/target_core_ua.c
+++ b/drivers/target/target_core_ua.c
@@ -48,7 +48,7 @@ target_scsi3_ua_check(struct se_cmd *cmd
 		return 0;
 
 	nacl = sess->se_node_acl;
-	if (!nacl)
+	if (!nacl || !nacl->device_list)
 		return 0;
 
 	deve = nacl->device_list[cmd->orig_fe_lun];
@@ -90,7 +90,7 @@ int core_scsi3_ua_allocate(
 	/*
 	 * PASSTHROUGH OPS
 	 */
-	if (!nacl)
+	if (!nacl || !nacl->device_list)
 		return -EINVAL;
 
 	ua = kmem_cache_zalloc(se_ua_cache, GFP_ATOMIC);
@@ -208,7 +208,7 @@ void core_scsi3_ua_for_check_condition(
 		return;
 
 	nacl = sess->se_node_acl;
-	if (!nacl)
+	if (!nacl || !nacl->device_list)
 		return;
 
 	spin_lock_irq(&nacl->device_list_lock);
@@ -276,7 +276,7 @@ int core_scsi3_ua_clear_for_request_sens
 		return -EINVAL;
 
 	nacl = sess->se_node_acl;
-	if (!nacl)
+	if (!nacl || !nacl->device_list)
 		return -EINVAL;
 
 	spin_lock_irq(&nacl->device_list_lock);


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#1249970 — [PATCH 4.1 024/202] perf: Fix AUX buffer refcounting

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Zijlstra <peterz@infradead.org>

commit 57ffc5ca679f499f4704fd9b6a372916f59930ee upstream.

Its currently possible to drop the last refcount to the aux buffer
from NMI context, which results in the expected fireworks.

The refcounting needs a bigger overhaul, but to cure the immediate
problem, delay the freeing by using an irq_work.

Reviewed-and-tested-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150618103249.GK19282@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/events/core.c        |    8 --------
 kernel/events/internal.h    |   10 ++++++++++
 kernel/events/ring_buffer.c |   27 +++++++++++++++++++++++++--
 3 files changed, 35 insertions(+), 10 deletions(-)

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4411,14 +4411,6 @@ static void ring_buffer_wakeup(struct pe
 	rcu_read_unlock();
 }
 
-static void rb_free_rcu(struct rcu_head *rcu_head)
-{
-	struct ring_buffer *rb;
-
-	rb = container_of(rcu_head, struct ring_buffer, rcu_head);
-	rb_free(rb);
-}
-
 struct ring_buffer *ring_buffer_get(struct perf_event *event)
 {
 	struct ring_buffer *rb;
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -11,6 +11,7 @@
 struct ring_buffer {
 	atomic_t			refcount;
 	struct rcu_head			rcu_head;
+	struct irq_work			irq_work;
 #ifdef CONFIG_PERF_USE_VMALLOC
 	struct work_struct		work;
 	int				page_order;	/* allocation order  */
@@ -55,6 +56,15 @@ struct ring_buffer {
 };
 
 extern void rb_free(struct ring_buffer *rb);
+
+static inline void rb_free_rcu(struct rcu_head *rcu_head)
+{
+	struct ring_buffer *rb;
+
+	rb = container_of(rcu_head, struct ring_buffer, rcu_head);
+	rb_free(rb);
+}
+
 extern struct ring_buffer *
 rb_alloc(int nr_pages, long watermark, int cpu, int flags);
 extern void perf_event_wakeup(struct perf_event *event);
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -221,6 +221,8 @@ void perf_output_end(struct perf_output_
 	rcu_read_unlock();
 }
 
+static void rb_irq_work(struct irq_work *work);
+
 static void
 ring_buffer_init(struct ring_buffer *rb, long watermark, int flags)
 {
@@ -241,6 +243,16 @@ ring_buffer_init(struct ring_buffer *rb,
 
 	INIT_LIST_HEAD(&rb->event_list);
 	spin_lock_init(&rb->event_lock);
+	init_irq_work(&rb->irq_work, rb_irq_work);
+}
+
+static void ring_buffer_put_async(struct ring_buffer *rb)
+{
+	if (!atomic_dec_and_test(&rb->refcount))
+		return;
+
+	rb->rcu_head.next = (void *)rb;
+	irq_work_queue(&rb->irq_work);
 }
 
 /*
@@ -319,7 +331,7 @@ err_put:
 	rb_free_aux(rb);
 
 err:
-	ring_buffer_put(rb);
+	ring_buffer_put_async(rb);
 	handle->event = NULL;
 
 	return NULL;
@@ -370,7 +382,7 @@ void perf_aux_output_end(struct perf_out
 
 	local_set(&rb->aux_nest, 0);
 	rb_free_aux(rb);
-	ring_buffer_put(rb);
+	ring_buffer_put_async(rb);
 }
 
 /*
@@ -559,7 +571,18 @@ static void __rb_free_aux(struct ring_bu
 void rb_free_aux(struct ring_buffer *rb)
 {
 	if (atomic_dec_and_test(&rb->aux_refcount))
+		irq_work_queue(&rb->irq_work);
+}
+
+static void rb_irq_work(struct irq_work *work)
+{
+	struct ring_buffer *rb = container_of(work, struct ring_buffer, irq_work);
+
+	if (!atomic_read(&rb->aux_refcount))
 		__rb_free_aux(rb);
+
+	if (rb->rcu_head.next == (void *)rb)
+		call_rcu(&rb->rcu_head, rb_free_rcu);
 }
 
 #ifndef CONFIG_PERF_USE_VMALLOC


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#1249971 — [PATCH 4.1 023/202] perf header: Fixup reading of HEADER_NRCPUS feature

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnaldo Carvalho de Melo <acme@redhat.com>

commit caa470475d9b59eeff093ae650800d34612c4379 upstream.

The original patch introducing this header wrote the number of CPUs available
and online in one order and then swapped those values when reading, fix it.

Before:

  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 4
  # echo 0 > /sys/devices/system/cpu/cpu2/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 3
  # echo 0 > /sys/devices/system/cpu/cpu1/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 2

After the fix, bringing back the CPUs online:

  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 2
  # nrcpus avail : 4
  # echo 1 > /sys/devices/system/cpu/cpu2/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 3
  # nrcpus avail : 4
  # echo 1 > /sys/devices/system/cpu/cpu1/online
  # perf record usleep 1
  # perf report --header-only | grep 'nrcpus \(online\|avail\)'
  # nrcpus online : 4
  # nrcpus avail : 4

Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: fbe96f29ce4b ("perf tools: Make perf.data more self-descriptive (v8)")
Link: http://lkml.kernel.org/r/20150911153323.GP23511@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/perf/util/header.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1426,7 +1426,7 @@ static int process_nrcpus(struct perf_fi
 	if (ph->needs_swap)
 		nr = bswap_32(nr);
 
-	ph->env.nr_cpus_online = nr;
+	ph->env.nr_cpus_avail = nr;
 
 	ret = readn(fd, &nr, sizeof(nr));
 	if (ret != sizeof(nr))
@@ -1435,7 +1435,7 @@ static int process_nrcpus(struct perf_fi
 	if (ph->needs_swap)
 		nr = bswap_32(nr);
 
-	ph->env.nr_cpus_avail = nr;
+	ph->env.nr_cpus_online = nr;
 	return 0;
 }
 


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#1249974 — [PATCH 4.1 052/202] s390/boot/decompression: disable floating point in decompressor

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Borntraeger <borntraeger@de.ibm.com>

commit adc0b7fbf6fe9967505c0254d9535ec7288186ae upstream.

my gcc 5.1 used an ldgr instruction with a register != 0,2,4,6 for
spilling/filling into a floating point register in our decompressor.

This will cause an AFP-register data exception as the decompressor
did not setup the additional floating point registers via cr0.
That causes a program check loop that looked like a hang with
one "Uncompressing Linux... " message (directly booted via kvm)
or a loop of "Uncompressing Linux... " messages (when booted via
zipl boot loader).

The offending code in my build was

   48e400:       e3 c0 af ff ff 71       lay     %r12,-1(%r10)
-->48e406:       b3 c1 00 1c             ldgr    %f1,%r12
   48e40a:       ec 6c 01 22 02 7f       clij    %r6,2,12,0x48e64e

but gcc could do spilling into an fpr at any function. We can
simply disable floating point support at that early stage.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/s390/boot/compressed/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/s390/boot/compressed/Makefile
+++ b/arch/s390/boot/compressed/Makefile
@@ -10,7 +10,7 @@ targets += misc.o piggy.o sizes.h head.o
 
 KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
-KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
+KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float
 KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
 


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#1249975 — [PATCH 4.1 025/202] watchdog: sunxi: fix activation of system reset

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Francesco Lavra <francescolavra.fl@gmail.com>

commit 0919e4445190da18496d31aac08b90828a47d45f upstream.

Commit f2147de33470 ("watchdog: sunxi: support parameterized compatible
strings") introduced a regression in sunxi_wdt_start(), by which
the system reset function of the watchdog is not enabled upon
starting the watchdog. As a result, the system is not reset when the
watchdog expires. Fix it.

Fixes: f2147de33470 ("watchdog: sunxi: support parameterized compatible strings")
Signed-off-by: Francesco Lavra <francescolavra.fl@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/watchdog/sunxi_wdt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -184,7 +184,7 @@ static int sunxi_wdt_start(struct watchd
 	/* Set system reset function */
 	reg = readl(wdt_base + regs->wdt_cfg);
 	reg &= ~(regs->wdt_reset_mask);
-	reg |= ~(regs->wdt_reset_val);
+	reg |= regs->wdt_reset_val;
 	writel(reg, wdt_base + regs->wdt_cfg);
 
 	/* Enable watchdog */


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#1249976 — [PATCH 4.1 046/202] x86/process: Add proper bound checks in 64bit get_wchan()

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Gleixner <tglx@linutronix.de>

commit eddd3826a1a0190e5235703d1e666affa4d13b96 upstream.

Dmitry Vyukov reported the following using trinity and the memory
error detector AddressSanitizer
(https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel).

[ 124.575597] ERROR: AddressSanitizer: heap-buffer-overflow on
address ffff88002e280000
[ 124.576801] ffff88002e280000 is located 131938492886538 bytes to
the left of 28857600-byte region [ffffffff81282e0a, ffffffff82e0830a)
[ 124.578633] Accessed by thread T10915:
[ 124.579295] inlined in describe_heap_address
./arch/x86/mm/asan/report.c:164
[ 124.579295] #0 ffffffff810dd277 in asan_report_error
./arch/x86/mm/asan/report.c:278
[ 124.580137] #1 ffffffff810dc6a0 in asan_check_region
./arch/x86/mm/asan/asan.c:37
[ 124.581050] #2 ffffffff810dd423 in __tsan_read8 ??:0
[ 124.581893] #3 ffffffff8107c093 in get_wchan
./arch/x86/kernel/process_64.c:444

The address checks in the 64bit implementation of get_wchan() are
wrong in several ways:

 - The lower bound of the stack is not the start of the stack
   page. It's the start of the stack page plus sizeof (struct
   thread_info)

 - The upper bound must be:

       top_of_stack - TOP_OF_KERNEL_STACK_PADDING - 2 * sizeof(unsigned long).

   The 2 * sizeof(unsigned long) is required because the stack pointer
   points at the frame pointer. The layout on the stack is: ... IP FP
   ... IP FP. So we need to make sure that both IP and FP are in the
   bounds.

Fix the bound checks and get rid of the mix of numeric constants, u64
and unsigned long. Making all unsigned long allows us to use the same
function for 32bit as well.

Use READ_ONCE() when accessing the stack. This does not prevent a
concurrent wakeup of the task and the stack changing, but at least it
avoids TOCTOU.

Also check task state at the end of the loop. Again that does not
prevent concurrent changes, but it avoids walking for nothing.

Add proper comments while at it.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Based-on-patch-from: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: kasan-dev <kasan-dev@googlegroups.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
Link: http://lkml.kernel.org/r/20150930083302.694788319@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/process_64.c |   52 ++++++++++++++++++++++++++++++++++---------
 1 file changed, 42 insertions(+), 10 deletions(-)

--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -499,27 +499,59 @@ void set_personality_ia32(bool x32)
 }
 EXPORT_SYMBOL_GPL(set_personality_ia32);
 
+/*
+ * Called from fs/proc with a reference on @p to find the function
+ * which called into schedule(). This needs to be done carefully
+ * because the task might wake up and we might look at a stack
+ * changing under us.
+ */
 unsigned long get_wchan(struct task_struct *p)
 {
-	unsigned long stack;
-	u64 fp, ip;
+	unsigned long start, bottom, top, sp, fp, ip;
 	int count = 0;
 
 	if (!p || p == current || p->state == TASK_RUNNING)
 		return 0;
-	stack = (unsigned long)task_stack_page(p);
-	if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
+
+	start = (unsigned long)task_stack_page(p);
+	if (!start)
 		return 0;
-	fp = *(u64 *)(p->thread.sp);
+
+	/*
+	 * Layout of the stack page:
+	 *
+	 * ----------- topmax = start + THREAD_SIZE - sizeof(unsigned long)
+	 * PADDING
+	 * ----------- top = topmax - TOP_OF_KERNEL_STACK_PADDING
+	 * stack
+	 * ----------- bottom = start + sizeof(thread_info)
+	 * thread_info
+	 * ----------- start
+	 *
+	 * The tasks stack pointer points at the location where the
+	 * framepointer is stored. The data on the stack is:
+	 * ... IP FP ... IP FP
+	 *
+	 * We need to read FP and IP, so we need to adjust the upper
+	 * bound by another unsigned long.
+	 */
+	top = start + THREAD_SIZE - TOP_OF_KERNEL_STACK_PADDING;
+	top -= 2 * sizeof(unsigned long);
+	bottom = start + sizeof(struct thread_info);
+
+	sp = READ_ONCE(p->thread.sp);
+	if (sp < bottom || sp > top)
+		return 0;
+
+	fp = READ_ONCE(*(unsigned long *)sp);
 	do {
-		if (fp < (unsigned long)stack ||
-		    fp >= (unsigned long)stack+THREAD_SIZE)
+		if (fp < bottom || fp > top)
 			return 0;
-		ip = *(u64 *)(fp+8);
+		ip = READ_ONCE(*(unsigned long *)(fp + sizeof(unsigned long)));
 		if (!in_sched_functions(ip))
 			return ip;
-		fp = *(u64 *)fp;
-	} while (count++ < 16);
+		fp = READ_ONCE(*(unsigned long *)fp);
+	} while (count++ < 16 && p->state != TASK_RUNNING);
 	return 0;
 }
 


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#1249979 — [PATCH 4.1 054/202] spi: xtensa-xtfpga: fix register endianness

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Max Filippov <jcmvbkbc@gmail.com>

commit b0b4855099e301c8603ea37da9a0103a96c2e0b1 upstream.

XTFPGA SPI controller has native endian registers.
Fix register acessors so that they work in big-endian configurations.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spi/spi-xtensa-xtfpga.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/spi/spi-xtensa-xtfpga.c
+++ b/drivers/spi/spi-xtensa-xtfpga.c
@@ -34,13 +34,13 @@ struct xtfpga_spi {
 static inline void xtfpga_spi_write32(const struct xtfpga_spi *spi,
 				      unsigned addr, u32 val)
 {
-	iowrite32(val, spi->regs + addr);
+	__raw_writel(val, spi->regs + addr);
 }
 
 static inline unsigned int xtfpga_spi_read32(const struct xtfpga_spi *spi,
 					     unsigned addr)
 {
-	return ioread32(spi->regs + addr);
+	return __raw_readl(spi->regs + addr);
 }
 
 static inline void xtfpga_spi_wait_busy(struct xtfpga_spi *xspi)


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#1250318 — Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review

On 10/17/2015 06:56 PM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.1.11 release.
> There are 202 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Tue Oct 20 01:48:10 UTC 2015.
> Anything received after that time might be too late.
>

Build results:
	total: 137 pass: 137 fail: 0
Qemu test results:
	total: 93 pass: 93 fail: 0

Details are available at http://server.roeck-us.net:8010/builders.

Guenter

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#1250815 — Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review

Who added the "***SPAM***" prefix?

On Sun, Oct 18, 2015 at 09:12:13PM -0700, Guenter Roeck wrote:
> On 10/17/2015 06:56 PM, Greg Kroah-Hartman wrote:
> >This is the start of the stable review cycle for the 4.1.11 release.
> >There are 202 patches in this series, all will be posted as a response
> >to this one.  If anyone has any issues with these being applied, please
> >let me know.
> >
> >Responses should be made by Tue Oct 20 01:48:10 UTC 2015.
> >Anything received after that time might be too late.
> >
> 
> Build results:
> 	total: 137 pass: 137 fail: 0
> Qemu test results:
> 	total: 93 pass: 93 fail: 0
> 
> Details are available at http://server.roeck-us.net:8010/builders.

Thanks for testing and letting me know.

greg k-h
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#1250836 — Re: ***SPAM*** [PATCH 4.1 000/202] 4.1.11-stable review

On Mon, Oct 19, 2015 at 08:14:12AM -0700, Greg Kroah-Hartman wrote:
> Who added the "***SPAM***" prefix?

Since it was present in Guenter's response without corresponding spam
headers, I suspect it was added between vger and Gunter's mail server
on your announce and that he responded with it.

Willy

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