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[3.19.y-ckt stable] Linux 3.19.8-ckt13 stable review

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  [3.19.y-ckt stable] Linux 3.19.8-ckt13 stable review Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:10 +0100
    [PATCH 3.19.y-ckt 030/160] USB: cdc_acm: Ignore Infineon Flash Loader utility Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:10 +0100
    [PATCH 3.19.y-ckt 026/160] fuse: break infinite loop in fuse_fill_write_pages() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:10 +0100
    [PATCH 3.19.y-ckt 156/160] net: filter: make JITs zero A for SKF_AD_ALU_XOR_X Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 059/160] ALSA: hda - Fixing speaker noise on the two latest thinkpad models Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 024/160] tools: Add a "make all" rule Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 040/160] irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 131/160] mm/memory_hotplug.c: check for missing sections in test_pages_in_a_zone() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 085/160] mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 052/160] net: mvpp2: fix refilling BM pools in RX path Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 063/160] radeon: Fix VCE IB test on Big-Endian systems Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 018/160] pptp: verify sockaddr_len in pptp_bind() and pptp_connect() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 028/160] iio: fix some warning messages Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 037/160] sata_sil: disable trim Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 143/160] pinctrl: bcm2835: Fix initial value for direction_output Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 086/160] mm: hugetlb: call huge_pte_alloc() only if ptep is null Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 048/160] usb: xhci: fix config fail of FS hub behind a HS hub with MTT Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 134/160] tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 088/160] ocfs2: fix SGID not inherited issue Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 148/160] qlcnic: fix a timeout loop Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 072/160] rfkill: copy the name into the rfkill struct Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 139/160] vmstat: allocate vmstat_wq before it is used Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 005/160] ip6mr: call del_timer_sync() in ip6mr_free_table() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 159/160] kvm: x86: only channel 0 of the i8254 is linked to the HPET Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 060/160] 9p: ->evict_inode() should kick out ->i_data, not ->i_mapping Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 097/160] ALSA: hda - Add a fixup for Thinkpad X1 Carbon 2nd Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 108/160] xen: Add RING_COPY_REQUEST() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 019/160] bluetooth: Validate socket address length in sco_sock_bind(). Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 074/160] ses: Fix problems with simple enclosures Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 122/160] USB: fix invalid memory access in hub_activate() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 133/160] tracing: Fix setting of start_index in find_next() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 033/160] jbd2: Fix unreclaimed pages after truncate in data=journal mode Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 120/160] [media] airspy: increase USB control message buffer size Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 073/160] dm btree: fix bufio buffer leaks in dm_btree_del() error path Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 035/160] i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 101/160] ftrace/scripts: Have recordmcount copy the object file Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 057/160] IB/srp: Fix a memory leak Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 004/160] ARC: Fix silly typo in MAINTAINERS file Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 098/160] spi: fix parent-device reference leak Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 069/160] ipmi: move timer init to before irq is setup Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 127/160] MIPS: uaccess: Fix strlen_user with EVA Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 099/160] scripts: recordmcount: break hardlinks Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 102/160] ARC: dw2 unwind: Reinstante unwinding out of modules Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 119/160] xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set. Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 003/160] sched/wait: Fix the signal handling fix Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 042/160] USB: whci-hcd: add check for dma mapping error Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 017/160] skbuff: Fix offset error in skb_reorder_vlan_header Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 125/160] parisc: Fix syscall restarts Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 152/160] net/mlx4_en: Fix HW timestamp init issue upon system startup Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 050/160] net: mvpp2: fix missing DMA region unmap in egress processing Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 062/160] radeon: Fix VCE ring test for Big-Endian systems Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 113/160] xen-scsiback: safely copy requests Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 112/160] xen-blkback: read from indirect descriptors only once Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 084/160] vmstat: Reduce time interval to stat update on idle cpu Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 066/160] ALSA: hda - Fix noise problems on Thinkpad T440s Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:20 +0100
    [PATCH 3.19.y-ckt 068/160] dm space map metadata: fix ref counting bug when bootstrapping a new space map Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 124/160] i2c: rcar: disable runtime PM correctly in slave mode Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 034/160] drm/ttm: Fixed a read/write lock imbalance Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 020/160] fou: clean up socket with kfree_rcu Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 039/160] staging: lustre: echo_copy.._lsm() dereferences userland pointers directly Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 016/160] vlan: Fix untag operations of stacked vlans with REORDER_HEADER off Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 014/160] sh_eth: fix kernel oops in skb_put() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 111/160] xen-blkback: only read request operation from shared ring once Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 155/160] ASoC: Use nested lock for snd_soc_dapm_mutex_lock Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 138/160] ftrace/module: Call clean up function when module init fails early Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 144/160] net: phy: mdio-mux: Check return value of mdiobus_alloc() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 121/160] USB: ipaq.c: fix a timeout loop Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 095/160] ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 137/160] dts: vt8500: Add SDHC node to DTS file for WM8650 Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 130/160] ocfs2: fix BUG when calculate new backup super Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 031/160] USB: serial: Another Infineon flash loader USB ID Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 045/160] dm btree: fix leak of bufio-backed block in btree_split_sibling error path Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 071/160] KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 082/160] parisc iommu: fix panic due to trying to allocate too large region Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 044/160] xen/events/fifo: Consume unprocessed events when a CPU dies Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 115/160] xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 087/160] drivers/base/memory.c: prohibit offlining of memory blocks with missing sections Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 091/160] n_tty: Fix poll() after buffer-limited eof push read Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 015/160] net: fix IP early demux races Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 038/160] usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter JMicron Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 154/160] ipv6/addrlabel: fix ip6addrlbl_get() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 114/160] xen/pciback: Save xen_pci_op commands before processing it Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 011/160] net: qca_spi: fix transmit queue timeout handling Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 058/160] IB/srp: Fix possible send queue overflow Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 077/160] ARM: dts: vf610: use reset values for L2 cache latencies Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 006/160] gre6: allow to update all parameters via rtnl Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 001/160] [3.19-stable only] Revert "perf symbols: Fix dso lookup by long name and missing buildids" Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 029/160] USB: cp210x: Remove CP2110 ID from compatibility list Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:30 +0100
    [PATCH 3.19.y-ckt 032/160] ext4: Fix handling of extended tv_sec Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 129/160] [PATCH] arm: fix handling of F_OFD_... in oabi_fcntl64() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 149/160] ser_gigaset: fix deallocation of platform device structure Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 065/160] crypto: skcipher - Copy iv from desc even for 0-len walks Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 117/160] xen/pciback: Do not install an IRQ handler for MSI interrupts. Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 153/160] include/linux/mmdebug.h: should include linux/bug.h Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 126/160] ALSA: hda/realtek - Fix silent headphone output on MacPro 4,1 (v2) Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 041/160] usb: core : hub: Fix BOS 'NULL pointer' kernel panic Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 022/160] KEYS: Fix race between read and revoke Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 151/160] net/mlx4_en: Remove dependency between timestamping capability and service_task Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 118/160] xen/pciback: For XEN_PCI_OP_disable_msi[|x] only disable if device has MSI(X) enabled. Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 008/160] sctp: use the same clock as if sock source timestamps were on Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 136/160] async_tx: use GFP_NOWAIT rather than GFP_IO Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 100/160] dma-debug: Fix dma_debug_entry offset calculation Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 090/160] ASoC: wm8974: set cache type for regmap Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 047/160] perf: Fix PERF_EVENT_IOC_PERIOD deadlock Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 027/160] usb: gadget: pxa27x: fix suspend callback Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 150/160] net: fix warnings in 'make htmldocs' by moving macro definition out of field declaration Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 092/160] tty: Fix GPF in flush_to_ldisc() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 064/160] video: fbdev: fsl: Fix kernel crash when diu_ops is not implemented Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 053/160] dmaengine: at_xdmac: fix macro typo Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 076/160] ASoC: davinci-mcasp: Fix XDATA check in mcasp_start_tx Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 142/160] sctp: start t5 timer only when peer rwnd is 0 and local state is SHUTDOWN_PENDING Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 036/160] AHCI: Fix softreset failed issue of Port Multiplier Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 147/160] amd-xgbe: fix a couple timeout loops Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 141/160] sctp: convert sack_needed and sack_generation to bits Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 093/160] genirq: Prevent chip buslock deadlock Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 104/160] powerpc/powernv: Fix the overflow of OPAL message notifiers head array Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 107/160] s390/dis: Fix handling of format specifiers Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 106/160] ALSA: hda - Set SKL+ hda controller power at freeze() and thaw() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 128/160] ASoC: arizona: Fix bclk for sample rates that are multiple of 4kHz Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:40 +0100
    [PATCH 3.19.y-ckt 009/160] sctp: update the netstamp_needed counter when copying sockets Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 116/160] xen/pciback: Return error on XEN_PCI_OP_enable_msix when device has MSI or MSI-X enabled Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 110/160] xen-netback: use RING_COPY_REQUEST() throughout Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 158/160] net: possible use after free in dst_release Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 051/160] net: mvpp2: fix buffers' DMA handling on RX path Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 055/160] vhost: relax log address alignment Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 067/160] dm thin metadata: fix bug when taking a metadata snapshot Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 160/160] firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6 Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 046/160] ARM: 8465/1: mm: keep reserved ASIDs in sync with mm after multiple rollovers Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 010/160] sctp: also copy sk_tsflags when copying the socket Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 103/160] ARC: dw2 unwind: Ignore CIE version !=1 gracefully instead of bailing Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 002/160] sched/wait: Fix signal handling in bit wait helpers Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 109/160] xen-netback: don't use last request to determine minimum Tx credit Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 105/160] powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 081/160] powercap / RAPL: fix BIOS lock check Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 023/160] KVM: x86: Reload pit counters for all channels when restoring state Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 080/160] USB: add quirk for devices with broken LPM Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 021/160] af_unix: Revert 'lock_interruptible' in stream receive code Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 049/160] ALSA: rme96: Fix unexpected volume reset after rate changes Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 079/160] xhci: fix usb2 resume timing and races. Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 132/160] ftrace/scripts: Fix incorrect use of sprintf in recordmcount Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 056/160] virtio: fix memory leak of virtio ida cache layers Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 007/160] atl1c: Improve driver not to do order 4 GFP_ATOMIC allocation Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 140/160] usb: musb: USB_TI_CPPI41_DMA requires dmaengine support Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 083/160] mm: hugetlb: fix hugepage memory leak caused by wrong reserve count Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 094/160] ALSA: usb-audio: Add a more accurate volume quirk for AudioQuest DragonFly Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 157/160] net: sched: fix missing free per cpu on qstats Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 135/160] ARM: versatile: fix MMC/SD interrupt assignment Kamal Mostafa <kamal@canonical.com> - 2016-01-20 02:50 +0100
    [PATCH 3.19.y-ckt 070/160] ASoC: es8328: Fix deemphasis values Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 096/160] ARM: 8471/1: need to save/restore arm register(r11) when it is corrupted Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 061/160] radeon/cik: Fix GFX IB test on Big-Endian Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 043/160] usb: Use the USB_SS_MULT() macro to decode burst multiplier for log message Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 146/160] mISDN: fix a loop count Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 145/160] sh_eth: fix TX buffer byte-swapping Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 123/160] x86/mce: Ensure offline CPUs don't participate in rendezvous process Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 013/160] net: add validation for the socket syscall protocol argument Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 078/160] ses: fix additional element traversal bug Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 075/160] vgaarb: fix signal handling in vga_get() Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100
    [PATCH 3.19.y-ckt 089/160] sh64: fix __NR_fgetxattr Kamal Mostafa <kamal@canonical.com> - 2016-01-20 03:00 +0100

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#1312702 — [PATCH 3.19.y-ckt 016/160] vlan: Fix untag operations of stacked vlans with REORDER_HEADER off

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Vlad Yasevich <vyasevich@gmail.com>

[ Upstream commit a6e18ff111701b4ff6947605bfbe9594ec42a6e8 ]

When we have multiple stacked vlan devices all of which have
turned off REORDER_HEADER flag, the untag operation does not
locate the ethernet addresses correctly for nested vlans.
The reason is that in case of REORDER_HEADER flag being off,
the outer vlan headers are put back and the mac_len is adjusted
to account for the presense of the header.  Then, the subsequent
untag operation, for the next level vlan, always use VLAN_ETH_HLEN
to locate the begining of the ethernet header and that ends up
being a multiple of 4 bytes short of the actuall beginning
of the mac header (the multiple depending on the how many vlan
encapsulations ethere are).

As a reslult, if there are multiple levles of vlan devices
with REODER_HEADER being off, the recevied packets end up
being dropped.

To solve this, we use skb->mac_len as the offset.  The value
is always set on receive path and starts out as a ETH_HLEN.
The value is also updated when the vlan header manupations occur
so we know it will be correct.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 net/core/skbuff.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index ce3b085..060b5f7 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4216,7 +4216,8 @@ static struct sk_buff *skb_reorder_vlan_header(struct sk_buff *skb)
 		return NULL;
 	}
 
-	memmove(skb->data - ETH_HLEN, skb->data - VLAN_ETH_HLEN, 2 * ETH_ALEN);
+	memmove(skb->data - ETH_HLEN, skb->data - skb->mac_len,
+		2 * ETH_ALEN);
 	skb->mac_header += VLAN_HLEN;
 	return skb;
 }
-- 
1.9.1

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#1312703 — [PATCH 3.19.y-ckt 014/160] sh_eth: fix kernel oops in skb_put()

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

[ Upstream commit 248be83dcb3feb3f6332eb3d010a016402138484 ]

In a low memory situation the following kernel oops occurs:

Unable to handle kernel NULL pointer dereference at virtual address 00000050
pgd = 8490c000
[00000050] *pgd=4651e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in:
CPU: 0    Not tainted  (3.4-at16 #9)
PC is at skb_put+0x10/0x98
LR is at sh_eth_poll+0x2c8/0xa10
pc : [<8035f780>]    lr : [<8028bf50>]    psr: 60000113
sp : 84eb1a90  ip : 84eb1ac8  fp : 84eb1ac4
r10: 0000003f  r9 : 000005ea  r8 : 00000000
r7 : 00000000  r6 : 940453b0  r5 : 00030000  r4 : 9381b180
r3 : 00000000  r2 : 00000000  r1 : 000005ea  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4248c059  DAC: 00000015
Process klogd (pid: 2046, stack limit = 0x84eb02e8)
[...]

This is  because netdev_alloc_skb() fails and 'mdp->rx_skbuff[entry]' is left
NULL but sh_eth_rx() later  uses it without checking.  Add such check...

Reported-by: Yasushi SHOJI <yashi@atmark-techno.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/net/ethernet/renesas/sh_eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 20f54d5..ff8b04e 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1465,6 +1465,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 		if (mdp->cd->shift_rd0)
 			desc_status >>= 16;
 
+		skb = mdp->rx_skbuff[entry];
 		if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
 				   RD_RFS5 | RD_RFS6 | RD_RFS10)) {
 			ndev->stats.rx_errors++;
@@ -1480,12 +1481,11 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 				ndev->stats.rx_missed_errors++;
 			if (desc_status & RD_RFS10)
 				ndev->stats.rx_over_errors++;
-		} else {
+		} else	if (skb) {
 			if (!mdp->cd->hw_swap)
 				sh_eth_soft_swap(
 					phys_to_virt(ALIGN(rxdesc->addr, 4)),
 					pkt_len + 2);
-			skb = mdp->rx_skbuff[entry];
 			mdp->rx_skbuff[entry] = NULL;
 			if (mdp->cd->rpadir)
 				skb_reserve(skb, NET_IP_ALIGN);
-- 
1.9.1

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#1312704 — [PATCH 3.19.y-ckt 111/160] xen-blkback: only read request operation from shared ring once

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>

commit 1f13d75ccb806260079e0679d55d9253e370ec8a upstream.

A compiler may load a switch statement value multiple times, which could
be bad when the value is in memory shared with the frontend.

When converting a non-native request to a native one, ensure that
src->operation is only loaded once by using READ_ONCE().

This is part of XSA155.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/block/xen-blkback/common.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index f65b807..d179195 100644
--- a/drivers/block/xen-blkback/common.h
+++ b/drivers/block/xen-blkback/common.h
@@ -391,8 +391,8 @@ static inline void blkif_get_x86_32_req(struct blkif_request *dst,
 					struct blkif_x86_32_request *src)
 {
 	int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST, j;
-	dst->operation = src->operation;
-	switch (src->operation) {
+	dst->operation = READ_ONCE(src->operation);
+	switch (dst->operation) {
 	case BLKIF_OP_READ:
 	case BLKIF_OP_WRITE:
 	case BLKIF_OP_WRITE_BARRIER:
@@ -439,8 +439,8 @@ static inline void blkif_get_x86_64_req(struct blkif_request *dst,
 					struct blkif_x86_64_request *src)
 {
 	int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST, j;
-	dst->operation = src->operation;
-	switch (src->operation) {
+	dst->operation = READ_ONCE(src->operation);
+	switch (dst->operation) {
 	case BLKIF_OP_READ:
 	case BLKIF_OP_WRITE:
 	case BLKIF_OP_WRITE_BARRIER:
-- 
1.9.1

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#1312705 — [PATCH 3.19.y-ckt 155/160] ASoC: Use nested lock for snd_soc_dapm_mutex_lock

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>

commit 783513eec3209542fcd6ac0cbcb030b3c17a4827 upstream.

snd_soc_dapm_mutex_lock currently uses the un-nested call which can
cause lockdep warnings when called from control handlers (a relatively
common usage) and using modules. As creating the control causes a
potential mutex inversion with the handler, creating the control will
take the controls_rwsem under the dapm_mutex and accessing the control
will take the dapm_mutex under controls_rwsem.

All the users look like they want to be using the runtime class of the
lock anyway, so this patch just changes snd_soc_dapm_mutex_lock to use
the nested call, with the SND_SOC_DAPM_CLASS_RUNTIME class.

Fixes: f6d5e586b416 ("ASoC: dapm: Add helpers to lock/unlock DAPM mutex")
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 include/sound/soc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index c62fcf8..5847d59 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1514,7 +1514,7 @@ extern const struct dev_pm_ops snd_soc_pm_ops;
 /* Helper functions */
 static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
 {
-	mutex_lock(&dapm->card->dapm_mutex);
+	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
 }
 
 static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
-- 
1.9.1

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#1312706 — [PATCH 3.19.y-ckt 138/160] ftrace/module: Call clean up function when module init fails early

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>

commit 049fb9bd416077b3622d317a45796be4f2431df3 upstream.

If the module init code fails after calling ftrace_module_init() and before
calling do_init_module(), we can suffer from a memory leak. This is because
ftrace_module_init() allocates pages to store the locations that ftrace
hooks are placed in the module text. If do_init_module() fails, it still
calls the MODULE_GOING notifiers which will tell ftrace to do a clean up of
the pages it allocated for the module. But if load_module() fails before
then, the pages allocated by ftrace_module_init() will never be freed.

Call ftrace_release_mod() on the module if load_module() fails before
getting to do_init_module().

Link: http://lkml.kernel.org/r/567CEA31.1070507@intel.com

Reported-by: "Qiu, PeiyangX" <peiyangx.qiu@intel.com>
Fixes: a949ae560a511 "ftrace/module: Hardcode ftrace_module_init() call into load_module()"
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 include/linux/ftrace.h | 1 +
 kernel/module.c        | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 6cd8c0e..47420d4 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -575,6 +575,7 @@ extern int ftrace_arch_read_dyn_info(char *buf, int size);
 
 extern int skip_trace(unsigned long ip);
 extern void ftrace_module_init(struct module *mod);
+extern void ftrace_release_mod(struct module *mod);
 
 extern void ftrace_disable_daemon(void);
 extern void ftrace_enable_daemon(void);
diff --git a/kernel/module.c b/kernel/module.c
index 8942456..bd784c4 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3386,6 +3386,12 @@ static int load_module(struct load_info *info, const char __user *uargs,
 	synchronize_rcu();
 	mutex_unlock(&module_mutex);
  free_module:
+	/*
+	 * Ftrace needs to clean up what it initialized.
+	 * This does nothing if ftrace_module_init() wasn't called,
+	 * but it must be called outside of module_mutex.
+	 */
+	ftrace_release_mod(mod);
 	module_deallocate(mod, info);
  free_copy:
 	free_copy(info);
-- 
1.9.1

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#1312707 — [PATCH 3.19.y-ckt 144/160] net: phy: mdio-mux: Check return value of mdiobus_alloc()

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Tobias Klauser <tklauser@distanz.ch>

commit 20b08e1a793d898f0f13040d5418ee0955f678cf upstream.

mdiobus_alloc() might return NULL, but its return value is not
checked in mdio_mux_init(). This could potentially lead to a NULL
pointer dereference. Fix it by checking the return value

Fixes: 0ca2997d1452 ("netdev/of/phy: Add MDIO bus multiplexer support.")
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/net/phy/mdio-mux.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio-mux.c b/drivers/net/phy/mdio-mux.c
index 4d4d25e..ac8a823 100644
--- a/drivers/net/phy/mdio-mux.c
+++ b/drivers/net/phy/mdio-mux.c
@@ -148,9 +148,14 @@ int mdio_mux_init(struct device *dev,
 		}
 		cb->bus_number = v;
 		cb->parent = pb;
+
 		cb->mii_bus = mdiobus_alloc();
+		if (!cb->mii_bus) {
+			ret_val = -ENOMEM;
+			of_node_put(child_bus_node);
+			break;
+		}
 		cb->mii_bus->priv = cb;
-
 		cb->mii_bus->irq = cb->phy_irq;
 		cb->mii_bus->name = "mdio_mux";
 		snprintf(cb->mii_bus->id, MII_BUS_ID_SIZE, "%x.%x",
-- 
1.9.1

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#1312708 — [PATCH 3.19.y-ckt 121/160] USB: ipaq.c: fix a timeout loop

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Dan Carpenter <dan.carpenter@oracle.com>

commit abdc9a3b4bac97add99e1d77dc6d28623afe682b upstream.

The code expects the loop to end with "retries" set to zero but, because
it is a post-op, it will end set to -1.  I have fixed this by moving the
decrement inside the loop.

Fixes: 014aa2a3c32e ('USB: ipaq: minor ipaq_open() cleanup.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/usb/serial/ipaq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index f51a5d5..ec1b8f2 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -531,7 +531,8 @@ static int ipaq_open(struct tty_struct *tty,
 	 * through. Since this has a reasonably high failure rate, we retry
 	 * several times.
 	 */
-	while (retries--) {
+	while (retries) {
+		retries--;
 		result = usb_control_msg(serial->dev,
 				usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21,
 				0x1, 0, NULL, 0, 100);
-- 
1.9.1

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#1312709 — [PATCH 3.19.y-ckt 095/160] ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: =?UTF-8?q?Krzysztof=20Ha=C5=82asa?= <khalasa@piap.pl>

commit 3a35e470bc6bc4ce34c19c410ebbe4e3bbf0bafe upstream.

Gateworks Ventana boards seem to need "RGMII-ID" (internal delay)
PHY mode, instead of simple "RGMII", for their Marvell 88E1510
transceiver. Otherwise, the Ethernet MAC doesn't work with Marvell PHY
driver (TX doesn't seem to work correctly).

Tested on GW5400 rev. C.

This bug affects ARM Fedora 23.

Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Acked-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 arch/arm/boot/dts/imx6q-gw5400-a.dts  | 2 +-
 arch/arm/boot/dts/imx6qdl-gw51xx.dtsi | 2 +-
 arch/arm/boot/dts/imx6qdl-gw52xx.dtsi | 2 +-
 arch/arm/boot/dts/imx6qdl-gw53xx.dtsi | 2 +-
 arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/imx6q-gw5400-a.dts b/arch/arm/boot/dts/imx6q-gw5400-a.dts
index 822ffb2..6c168dc 100644
--- a/arch/arm/boot/dts/imx6q-gw5400-a.dts
+++ b/arch/arm/boot/dts/imx6q-gw5400-a.dts
@@ -154,7 +154,7 @@
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 30 GPIO_ACTIVE_HIGH>;
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
index f2867c4..90496aa 100644
--- a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
@@ -94,7 +94,7 @@
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
index b5756c2..383caedd 100644
--- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
@@ -154,7 +154,7 @@
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
index 86f03c1..74800ff 100644
--- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
@@ -155,7 +155,7 @@
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
index 4a8d97f..64cd12a 100644
--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
@@ -145,7 +145,7 @@
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
-- 
1.9.1

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#1312710 — [PATCH 3.19.y-ckt 137/160] dts: vt8500: Add SDHC node to DTS file for WM8650

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Roman Volkov <rvolkov@v1ros.org>

commit 0f090bf14e51e7eefb71d9d1c545807f8b627986 upstream.

Since WM8650 has the same 'WMT' SDHC controller as WM8505, and the driver
is already in the kernel, this node enables the controller support for
WM8650

Signed-off-by: Roman Volkov <rvolkov@v1ros.org>
Reviewed-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 arch/arm/boot/dts/wm8650.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/wm8650.dtsi b/arch/arm/boot/dts/wm8650.dtsi
index b1c59a7..e12213d 100644
--- a/arch/arm/boot/dts/wm8650.dtsi
+++ b/arch/arm/boot/dts/wm8650.dtsi
@@ -187,6 +187,15 @@
 			interrupts = <43>;
 		};
 
+		sdhc@d800a000 {
+			compatible = "wm,wm8505-sdhc";
+			reg = <0xd800a000 0x400>;
+			interrupts = <20>, <21>;
+			clocks = <&clksdhc>;
+			bus-width = <4>;
+			sdon-inverted;
+		};
+
 		fb: fb@d8050800 {
 			compatible = "wm,wm8505-fb";
 			reg = <0xd8050800 0x200>;
-- 
1.9.1

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#1312711 — [PATCH 3.19.y-ckt 130/160] ocfs2: fix BUG when calculate new backup super

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Joseph Qi <joseph.qi@huawei.com>

commit 5c9ee4cbf2a945271f25b89b137f2c03bbc3be33 upstream.

When resizing, it firstly extends the last gd.  Once it should backup
super in the gd, it calculates new backup super and update the
corresponding value.

But it currently doesn't consider the situation that the backup super is
already done.  And in this case, it still sets the bit in gd bitmap and
then decrease from bg_free_bits_count, which leads to a corrupted gd and
trigger the BUG in ocfs2_block_group_set_bits:

    BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits);

So check whether the backup super is done and then do the updates.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Jiufei Xue <xuejiufei@huawei.com>
Reviewed-by: Yiwen Jiang <jiangyiwen@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 fs/ocfs2/resize.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/fs/ocfs2/resize.c b/fs/ocfs2/resize.c
index d5da6f6..79b8021 100644
--- a/fs/ocfs2/resize.c
+++ b/fs/ocfs2/resize.c
@@ -54,11 +54,12 @@
 static u16 ocfs2_calc_new_backup_super(struct inode *inode,
 				       struct ocfs2_group_desc *gd,
 				       u16 cl_cpg,
+				       u16 old_bg_clusters,
 				       int set)
 {
 	int i;
 	u16 backups = 0;
-	u32 cluster;
+	u32 cluster, lgd_cluster;
 	u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno);
 
 	for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
@@ -71,6 +72,12 @@ static u16 ocfs2_calc_new_backup_super(struct inode *inode,
 		else if (gd_blkno > lgd_blkno)
 			break;
 
+		/* check if already done backup super */
+		lgd_cluster = ocfs2_blocks_to_clusters(inode->i_sb, lgd_blkno);
+		lgd_cluster += old_bg_clusters;
+		if (lgd_cluster >= cluster)
+			continue;
+
 		if (set)
 			ocfs2_set_bit(cluster % cl_cpg,
 				      (unsigned long *)gd->bg_bitmap);
@@ -99,6 +106,7 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
 	u16 chain, num_bits, backups = 0;
 	u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
 	u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
+	u16 old_bg_clusters;
 
 	trace_ocfs2_update_last_group_and_inode(new_clusters,
 						first_new_cluster);
@@ -112,6 +120,7 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
 
 	group = (struct ocfs2_group_desc *)group_bh->b_data;
 
+	old_bg_clusters = le16_to_cpu(group->bg_bits) / cl_bpc;
 	/* update the group first. */
 	num_bits = new_clusters * cl_bpc;
 	le16_add_cpu(&group->bg_bits, num_bits);
@@ -125,7 +134,7 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
 				     OCFS2_FEATURE_COMPAT_BACKUP_SB)) {
 		backups = ocfs2_calc_new_backup_super(bm_inode,
 						     group,
-						     cl_cpg, 1);
+						     cl_cpg, old_bg_clusters, 1);
 		le16_add_cpu(&group->bg_free_bits_count, -1 * backups);
 	}
 
@@ -163,7 +172,7 @@ out_rollback:
 	if (ret < 0) {
 		ocfs2_calc_new_backup_super(bm_inode,
 					    group,
-					    cl_cpg, 0);
+					    cl_cpg, old_bg_clusters, 0);
 		le16_add_cpu(&group->bg_free_bits_count, backups);
 		le16_add_cpu(&group->bg_bits, -1 * num_bits);
 		le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
-- 
1.9.1

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#1312712 — [PATCH 3.19.y-ckt 031/160] USB: serial: Another Infineon flash loader USB ID

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Jonas Jonsson <jonas@ludd.ltu.se>

commit a0e80fbd56b4573de997c9a088a33abbc1121400 upstream.

The flash loader has been seen on a Telit UE910 modem. The flash loader
is a bit special, it presents both an ACM and CDC Data interface but
only the latter is useful. Unless a magic string is sent to the device
it will disappear and the regular modem device appears instead.

Signed-off-by: Jonas Jonsson <jonas@ludd.ltu.se>
Tested-by: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/usb/serial/usb-serial-simple.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
index 3658662..a204782 100644
--- a/drivers/usb/serial/usb-serial-simple.c
+++ b/drivers/usb/serial/usb-serial-simple.c
@@ -53,6 +53,7 @@ DEVICE(funsoft, FUNSOFT_IDS);
 
 /* Infineon Flashloader driver */
 #define FLASHLOADER_IDS()		\
+	{ USB_DEVICE_INTERFACE_CLASS(0x058b, 0x0041, USB_CLASS_CDC_DATA) }, \
 	{ USB_DEVICE(0x8087, 0x0716) }
 DEVICE(flashloader, FLASHLOADER_IDS);
 
-- 
1.9.1

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#1312713 — [PATCH 3.19.y-ckt 045/160] dm btree: fix leak of bufio-backed block in btree_split_sibling error path

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Mike Snitzer <snitzer@redhat.com>

commit 30ce6e1cc5a0f781d60227e9096c86e188d2c2bd upstream.

The block allocated at the start of btree_split_sibling() is never
released if later insert_at() fails.

Fix this by releasing the previously allocated bufio block using
unlock_block().

Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/md/persistent-data/dm-btree.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
index d6e4703..7ba85e2 100644
--- a/drivers/md/persistent-data/dm-btree.c
+++ b/drivers/md/persistent-data/dm-btree.c
@@ -471,8 +471,10 @@ static int btree_split_sibling(struct shadow_spine *s, dm_block_t root,
 
 	r = insert_at(sizeof(__le64), pn, parent_index + 1,
 		      le64_to_cpu(rn->keys[0]), &location);
-	if (r)
+	if (r) {
+		unlock_block(s->info, right);
 		return r;
+	}
 
 	if (key < le64_to_cpu(rn->keys[0])) {
 		unlock_block(s->info, right);
-- 
1.9.1

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#1312714 — [PATCH 3.19.y-ckt 071/160] KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Paul Mackerras <paulus@ozlabs.org>

commit c20875a3e638e4a03e099b343ec798edd1af5cc6 upstream.

Currently it is possible for userspace (e.g. QEMU) to set a value
for the MSR for a guest VCPU which has both of the TS bits set,
which is an illegal combination.  The result of this is that when
we execute a hrfid (hypervisor return from interrupt doubleword)
instruction to enter the guest, the CPU will take a TM Bad Thing
type of program interrupt (vector 0x700).

Now, if PR KVM is configured in the kernel along with HV KVM, we
actually handle this without crashing the host or giving hypervisor
privilege to the guest; instead what happens is that we deliver a
program interrupt to the guest, with SRR0 reflecting the address
of the hrfid instruction and SRR1 containing the MSR value at that
point.  If PR KVM is not configured in the kernel, then we try to
run the host's program interrupt handler with the MMU set to the
guest context, which almost certainly causes a host crash.

This closes the hole by making kvmppc_set_msr_hv() check for the
illegal combination and force the TS field to a safe value (00,
meaning non-transactional).

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 arch/powerpc/kvm/book3s_hv.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index de4018a..a0f6fce 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -190,6 +190,12 @@ static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu)
 
 static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr)
 {
+	/*
+	 * Check for illegal transactional state bit combination
+	 * and if we find it, force the TS field to a safe state.
+	 */
+	if ((msr & MSR_TS_MASK) == MSR_TS_MASK)
+		msr &= ~MSR_TS_MASK;
 	vcpu->arch.shregs.msr = msr;
 	kvmppc_end_cede(vcpu);
 }
-- 
1.9.1

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#1312715 — [PATCH 3.19.y-ckt 082/160] parisc iommu: fix panic due to trying to allocate too large region

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Mikulas Patocka <mpatocka@redhat.com>

commit e46e31a3696ae2d66f32c207df3969613726e636 upstream.

When using the Promise TX2+ SATA controller on PA-RISC, the system often
crashes with kernel panic, for example just writing data with the dd
utility will make it crash.

Kernel panic - not syncing: drivers/parisc/sba_iommu.c: I/O MMU @ 000000000000a000 is out of mapping resources

CPU: 0 PID: 18442 Comm: mkspadfs Not tainted 4.4.0-rc2 #2
Backtrace:
 [<000000004021497c>] show_stack+0x14/0x20
 [<0000000040410bf0>] dump_stack+0x88/0x100
 [<000000004023978c>] panic+0x124/0x360
 [<0000000040452c18>] sba_alloc_range+0x698/0x6a0
 [<0000000040453150>] sba_map_sg+0x260/0x5b8
 [<000000000c18dbb4>] ata_qc_issue+0x264/0x4a8 [libata]
 [<000000000c19535c>] ata_scsi_translate+0xe4/0x220 [libata]
 [<000000000c19a93c>] ata_scsi_queuecmd+0xbc/0x320 [libata]
 [<0000000040499bbc>] scsi_dispatch_cmd+0xfc/0x130
 [<000000004049da34>] scsi_request_fn+0x6e4/0x970
 [<00000000403e95a8>] __blk_run_queue+0x40/0x60
 [<00000000403e9d8c>] blk_run_queue+0x3c/0x68
 [<000000004049a534>] scsi_run_queue+0x2a4/0x360
 [<000000004049be68>] scsi_end_request+0x1a8/0x238
 [<000000004049de84>] scsi_io_completion+0xfc/0x688
 [<0000000040493c74>] scsi_finish_command+0x17c/0x1d0

The cause of the crash is not exhaustion of the IOMMU space, there is
plenty of free pages. The function sba_alloc_range is called with size
0x11000, thus the pages_needed variable is 0x11. The function
sba_search_bitmap is called with bits_wanted 0x11 and boundary size is
0x10 (because dma_get_seg_boundary(dev) returns 0xffff).

The function sba_search_bitmap attempts to allocate 17 pages that must not
cross 16-page boundary - it can't satisfy this requirement
(iommu_is_span_boundary always returns true) and fails even if there are
many free entries in the IOMMU space.

How did it happen that we try to allocate 17 pages that don't cross
16-page boundary? The cause is in the function iommu_coalesce_chunks. This
function tries to coalesce adjacent entries in the scatterlist. The
function does several checks if it may coalesce one entry with the next,
one of those checks is this:

	if (startsg->length + dma_len > max_seg_size)
		break;

When it finishes coalescing adjacent entries, it allocates the mapping:

sg_dma_len(contig_sg) = dma_len;
dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
sg_dma_address(contig_sg) =
	PIDE_FLAG
	| (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
	| dma_offset;

It is possible that (startsg->length + dma_len > max_seg_size) is false
(we are just near the 0x10000 max_seg_size boundary), so the funcion
decides to coalesce this entry with the next entry. When the coalescing
succeeds, the function performs
	dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
And now, because of non-zero dma_offset, dma_len is greater than 0x10000.
iommu_alloc_range (a pointer to sba_alloc_range) is called and it attempts
to allocate 17 pages for a device that must not cross 16-page boundary.

To fix the bug, we must make sure that dma_len after addition of
dma_offset and alignment doesn't cross the segment boundary. I.e. change
	if (startsg->length + dma_len > max_seg_size)
		break;
to
	if (ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) > max_seg_size)
		break;

This patch makes this change (it precalculates max_seg_boundary at the
beginning of the function iommu_coalesce_chunks). I also added a check
that the mapping length doesn't exceed dma_get_seg_boundary(dev) (it is
not needed for Promise TX2+ SATA, but it may be needed for other devices
that have dma_get_seg_boundary lower than dma_get_max_seg_size).

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/parisc/iommu-helpers.h | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
index 8c33491..c6aa388 100644
--- a/drivers/parisc/iommu-helpers.h
+++ b/drivers/parisc/iommu-helpers.h
@@ -104,7 +104,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
 	struct scatterlist *contig_sg;	   /* contig chunk head */
 	unsigned long dma_offset, dma_len; /* start/len of DMA stream */
 	unsigned int n_mappings = 0;
-	unsigned int max_seg_size = dma_get_max_seg_size(dev);
+	unsigned int max_seg_size = min(dma_get_max_seg_size(dev),
+					(unsigned)DMA_CHUNK_SIZE);
+	unsigned int max_seg_boundary = dma_get_seg_boundary(dev) + 1;
+	if (max_seg_boundary)	/* check if the addition above didn't overflow */
+		max_seg_size = min(max_seg_size, max_seg_boundary);
 
 	while (nents > 0) {
 
@@ -139,14 +143,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
 
 			/*
 			** First make sure current dma stream won't
-			** exceed DMA_CHUNK_SIZE if we coalesce the
+			** exceed max_seg_size if we coalesce the
 			** next entry.
 			*/   
-			if(unlikely(ALIGN(dma_len + dma_offset + startsg->length,
-					    IOVP_SIZE) > DMA_CHUNK_SIZE))
-				break;
-
-			if (startsg->length + dma_len > max_seg_size)
+			if (unlikely(ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) >
+				     max_seg_size))
 				break;
 
 			/*
-- 
1.9.1

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#1312716 — [PATCH 3.19.y-ckt 044/160] xen/events/fifo: Consume unprocessed events when a CPU dies

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Ross Lagerwall <ross.lagerwall@citrix.com>

commit 3de88d622fd68bd4dbee0f80168218b23f798fd0 upstream.

When a CPU is offlined, there may be unprocessed events on a port for
that CPU.  If the port is subsequently reused on a different CPU, it
could be in an unexpected state with the link bit set, resulting in
interrupts being missed. Fix this by consuming any unprocessed events
for a particular CPU when that CPU dies.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/xen/events/events_fifo.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c
index 417415d..1dd0ba12 100644
--- a/drivers/xen/events/events_fifo.c
+++ b/drivers/xen/events/events_fifo.c
@@ -281,7 +281,8 @@ static void handle_irq_for_port(unsigned port)
 
 static void consume_one_event(unsigned cpu,
 			      struct evtchn_fifo_control_block *control_block,
-			      unsigned priority, unsigned long *ready)
+			      unsigned priority, unsigned long *ready,
+			      bool drop)
 {
 	struct evtchn_fifo_queue *q = &per_cpu(cpu_queue, cpu);
 	uint32_t head;
@@ -313,13 +314,17 @@ static void consume_one_event(unsigned cpu,
 	if (head == 0)
 		clear_bit(priority, ready);
 
-	if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port))
-		handle_irq_for_port(port);
+	if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port)) {
+		if (unlikely(drop))
+			pr_warn("Dropping pending event for port %u\n", port);
+		else
+			handle_irq_for_port(port);
+	}
 
 	q->head[priority] = head;
 }
 
-static void evtchn_fifo_handle_events(unsigned cpu)
+static void __evtchn_fifo_handle_events(unsigned cpu, bool drop)
 {
 	struct evtchn_fifo_control_block *control_block;
 	unsigned long ready;
@@ -331,11 +336,16 @@ static void evtchn_fifo_handle_events(unsigned cpu)
 
 	while (ready) {
 		q = find_first_bit(&ready, EVTCHN_FIFO_MAX_QUEUES);
-		consume_one_event(cpu, control_block, q, &ready);
+		consume_one_event(cpu, control_block, q, &ready, drop);
 		ready |= xchg(&control_block->ready, 0);
 	}
 }
 
+static void evtchn_fifo_handle_events(unsigned cpu)
+{
+	__evtchn_fifo_handle_events(cpu, false);
+}
+
 static void evtchn_fifo_resume(void)
 {
 	unsigned cpu;
@@ -420,6 +430,9 @@ static int evtchn_fifo_cpu_notification(struct notifier_block *self,
 		if (!per_cpu(cpu_control_block, cpu))
 			ret = evtchn_fifo_alloc_control_block(cpu);
 		break;
+	case CPU_DEAD:
+		__evtchn_fifo_handle_events(cpu, true);
+		break;
 	default:
 		break;
 	}
-- 
1.9.1

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#1312717 — [PATCH 3.19.y-ckt 115/160] xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

commit 56441f3c8e5bd45aab10dd9f8c505dd4bec03b0d upstream.

The guest sequence of:

 a) XEN_PCI_OP_enable_msi
 b) XEN_PCI_OP_enable_msi
 c) XEN_PCI_OP_disable_msi

results in hitting an BUG_ON condition in the msi.c code.

The MSI code uses an dev->msi_list to which it adds MSI entries.
Under the above conditions an BUG_ON() can be hit. The device
passed in the guest MUST have MSI capability.

The a) adds the entry to the dev->msi_list and sets msi_enabled.
The b) adds a second entry but adding in to SysFS fails (duplicate entry)
and deletes all of the entries from msi_list and returns (with msi_enabled
is still set).  c) pci_disable_msi passes the msi_enabled checks and hits:

BUG_ON(list_empty(dev_to_msi_list(&dev->dev)));

and blows up.

The patch adds a simple check in the XEN_PCI_OP_enable_msi to guard
against that. The check for msix_enabled is not stricly neccessary.

This is part of XSA-157.

Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/xen/xen-pciback/pciback_ops.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index a0e0e3e..8bfb87c 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -144,7 +144,12 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev,
 	if (unlikely(verbose_request))
 		printk(KERN_DEBUG DRV_NAME ": %s: enable MSI\n", pci_name(dev));
 
-	status = pci_enable_msi(dev);
+	if (dev->msi_enabled)
+		status = -EALREADY;
+	else if (dev->msix_enabled)
+		status = -ENXIO;
+	else
+		status = pci_enable_msi(dev);
 
 	if (status) {
 		pr_warn_ratelimited("%s: error enabling MSI for guest %u: err %d\n",
-- 
1.9.1

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#1312718 — [PATCH 3.19.y-ckt 087/160] drivers/base/memory.c: prohibit offlining of memory blocks with missing sections

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Seth Jennings <sjennings@variantweb.net>

commit 26bbe7ef6d5cdc7ec08cba6d433fca4060f258f3 upstream.

Commit bdee237c0343 ("x86: mm: Use 2GB memory block size on large-memory
x86-64 systems") and 982792c782ef ("x86, mm: probe memory block size for
generic x86 64bit") introduced large block sizes for x86.  This made it
possible to have multiple sections per memory block where previously,
there was a only every one section per block.

Since blocks consist of contiguous ranges of section, there can be holes
in the blocks where sections are not present.  If one attempts to
offline such a block, a crash occurs since the code is not designed to
deal with this.

This patch is a quick fix to gaurd against the crash by not allowing
blocks with non-present sections to be offlined.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=107781

Signed-off-by: Seth Jennings <sjennings@variantweb.net>
Reported-by: Andrew Banman <abanman@sgi.com>
Cc: Daniel J Blueman <daniel@numascale.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Russ Anderson <rja@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/base/memory.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 85be040..6017b00 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -301,6 +301,10 @@ static int memory_subsys_offline(struct device *dev)
 	if (mem->state == MEM_OFFLINE)
 		return 0;
 
+	/* Can't offline block with non-present sections */
+	if (mem->section_count != sections_per_block)
+		return -EINVAL;
+
 	return memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE);
 }
 
-- 
1.9.1

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#1312719 — [PATCH 3.19.y-ckt 091/160] n_tty: Fix poll() after buffer-limited eof push read

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Peter Hurley <peter@hurleysoftware.com>

commit ac8f3bf8832a405cc6e4dccb1d26d5cb2994d234 upstream.

commit 40d5e0905a03 ("n_tty: Fix EOF push handling") fixed EOF push
for reads. However, that approach still allows a condition mismatch
between poll() and read(), where poll() returns POLLIN but read()
blocks. This state can happen when a previous read() returned because
the user buffer was full and the next character was an EOF not at the
beginning of the line. While the next read() will properly identify
the condition and advance the read buffer tail without improperly
indicating an EOF file condition (ie., read() will not mistakenly
return 0), poll() will mistakenly indicate POLLIN.

Although a possible solution would be to peek at the input buffer
in n_tty_poll(), the better solution in this patch is to eat the
EOF during the previous read() (ie., fix the problem by eliminating
the condition).

The current canon line buffer copy limits the scan for next end-of-line
to the smaller of either,
   a. the remaining user buffer size
   b. completed lines in the input buffer
When the remaining user buffer size is exactly one less than the
end-of-line marked by EOF push, the EOF is not scanned nor skipped
but left for subsequent reads. In the example below, the scan
index 'eol' has stopped at the EOF because it is past the scan
limit of 5 (not because it has found the next set bit in read_flags)

   user buffer [*nr = 5]    _ _ _ _ _

   read_flags               0 0 0 0 0   1
   input buffer             h e l l o [EOF]
                            ^           ^
                           /           /
                         tail        eol

   result: found = 0, tail += 5, *nr += 5

Instead, allow the scan to peek ahead 1 byte (while still limiting the
scan to completed lines in the input buffer). For the example above,

   result: found = 1, tail += 6, *nr += 5

Because the scan limit is now bumped +1 byte, when the scan is
completed, the tail advance and the user buffer copy limit is
re-clamped to *nr when EOF is _not_ found.

Fixes: 40d5e0905a03 ("n_tty: Fix EOF push handling")
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/tty/n_tty.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index ba88b43..bcbd73d 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2060,13 +2060,13 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
 	size_t eol;
 	size_t tail;
 	int ret, found = 0;
-	bool eof_push = 0;
 
 	/* N.B. avoid overrun if nr == 0 */
-	n = min(*nr, read_cnt(ldata));
-	if (!n)
+	if (!*nr)
 		return 0;
 
+	n = min(*nr + 1, read_cnt(ldata));
+
 	tail = ldata->read_tail & (N_TTY_BUF_SIZE - 1);
 	size = min_t(size_t, tail + n, N_TTY_BUF_SIZE);
 
@@ -2087,12 +2087,11 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
 	n = eol - tail;
 	if (n > 4096)
 		n += 4096;
-	n += found;
-	c = n;
+	c = n + found;
 
-	if (found && !ldata->push && read_buf(ldata, eol) == __DISABLED_CHAR) {
-		n--;
-		eof_push = !n && ldata->read_tail != ldata->line_start;
+	if (!found || read_buf(ldata, eol) != __DISABLED_CHAR) {
+		c = min(*nr, c);
+		n = c;
 	}
 
 	n_tty_trace("%s: eol:%zu found:%d n:%zu c:%zu size:%zu more:%zu\n",
@@ -2123,7 +2122,7 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
 			ldata->push = 0;
 		tty_audit_push(tty);
 	}
-	return eof_push ? -EAGAIN : 0;
+	return 0;
 }
 
 extern ssize_t redirected_tty_write(struct file *, const char __user *,
@@ -2292,10 +2291,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 
 		if (ldata->icanon && !L_EXTPROC(tty)) {
 			retval = canon_copy_from_read_buf(tty, &b, &nr);
-			if (retval == -EAGAIN) {
-				retval = 0;
-				continue;
-			} else if (retval)
+			if (retval)
 				break;
 		} else {
 			int uncopied;
-- 
1.9.1

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#1312721 — [PATCH 3.19.y-ckt 015/160] net: fix IP early demux races

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 5037e9ef9454917b047f9f3a19b4dd179fbf7cd4 ]

David Wilder reported crashes caused by dst reuse.

<quote David>
  I am seeing a crash on a distro V4.2.3 kernel caused by a double
  release of a dst_entry.  In ipv4_dst_destroy() the call to
  list_empty() finds a poisoned next pointer, indicating the dst_entry
  has already been removed from the list and freed. The crash occurs
  18 to 24 hours into a run of a network stress exerciser.
</quote>

Thanks to his detailed report and analysis, we were able to understand
the core issue.

IP early demux can associate a dst to skb, after a lookup in TCP/UDP
sockets.

When socket cache is not properly set, we want to store into
sk->sk_dst_cache the dst for future IP early demux lookups,
by acquiring a stable refcount on the dst.

Problem is this acquisition is simply using an atomic_inc(),
which works well, unless the dst was queued for destruction from
dst_release() noticing dst refcount went to zero, if DST_NOCACHE
was set on dst.

We need to make sure current refcount is not zero before incrementing
it, or risk double free as David reported.

This patch, being a stable candidate, adds two new helpers, and use
them only from IP early demux problematic paths.

It might be possible to merge in net-next skb_dst_force() and
skb_dst_force_safe(), but I prefer having the smallest patch for stable
kernels : Maybe some skb_dst_force() callers do not expect skb->dst
can suddenly be cleared.

Can probably be backported back to linux-3.6 kernels

Reported-by: David J. Wilder <dwilder@us.ibm.com>
Tested-by: David J. Wilder <dwilder@us.ibm.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 include/net/dst.h   | 33 +++++++++++++++++++++++++++++++++
 include/net/sock.h  |  2 +-
 net/ipv4/tcp_ipv4.c |  5 ++---
 net/ipv6/tcp_ipv6.c |  3 +--
 4 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/include/net/dst.h b/include/net/dst.h
index a8ae4e7..bdac82d 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -312,6 +312,39 @@ static inline void skb_dst_force(struct sk_buff *skb)
 	}
 }
 
+/**
+ * dst_hold_safe - Take a reference on a dst if possible
+ * @dst: pointer to dst entry
+ *
+ * This helper returns false if it could not safely
+ * take a reference on a dst.
+ */
+static inline bool dst_hold_safe(struct dst_entry *dst)
+{
+	if (dst->flags & DST_NOCACHE)
+		return atomic_inc_not_zero(&dst->__refcnt);
+	dst_hold(dst);
+	return true;
+}
+
+/**
+ * skb_dst_force_safe - makes sure skb dst is refcounted
+ * @skb: buffer
+ *
+ * If dst is not yet refcounted and not destroyed, grab a ref on it.
+ */
+static inline void skb_dst_force_safe(struct sk_buff *skb)
+{
+	if (skb_dst_is_noref(skb)) {
+		struct dst_entry *dst = skb_dst(skb);
+
+		if (!dst_hold_safe(dst))
+			dst = NULL;
+
+		skb->_skb_refdst = (unsigned long)dst;
+	}
+}
+
 
 /**
  *	__skb_tunnel_rx - prepare skb for rx reinsert
diff --git a/include/net/sock.h b/include/net/sock.h
index 1333abe..ecdae11 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -798,7 +798,7 @@ void sk_stream_write_space(struct sock *sk);
 static inline void __sk_add_backlog(struct sock *sk, struct sk_buff *skb)
 {
 	/* dont let skb dst not refcounted, we are going to leave rcu lock */
-	skb_dst_force(skb);
+	skb_dst_force_safe(skb);
 
 	if (!sk->sk_backlog.tail)
 		sk->sk_backlog.head = skb;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1f3943f..7a8a674 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1555,7 +1555,7 @@ bool tcp_prequeue(struct sock *sk, struct sk_buff *skb)
 	if (likely(sk->sk_rx_dst))
 		skb_dst_drop(skb);
 	else
-		skb_dst_force(skb);
+		skb_dst_force_safe(skb);
 
 	__skb_queue_tail(&tp->ucopy.prequeue, skb);
 	tp->ucopy.memory += skb->truesize;
@@ -1760,8 +1760,7 @@ void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb_dst(skb);
 
-	if (dst) {
-		dst_hold(dst);
+	if (dst && dst_hold_safe(dst)) {
 		sk->sk_rx_dst = dst;
 		inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
 	}
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 5cf4d0a..53e22dd 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -93,10 +93,9 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb_dst(skb);
 
-	if (dst) {
+	if (dst && dst_hold_safe(dst)) {
 		const struct rt6_info *rt = (const struct rt6_info *)dst;
 
-		dst_hold(dst);
 		sk->sk_rx_dst = dst;
 		inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
 		if (rt->rt6i_node)
-- 
1.9.1

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#1312722 — [PATCH 3.19.y-ckt 038/160] usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter JMicron

3.19.8-ckt13 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Dmitry Katsubo <dmitry.katsubo@gmail.com>

commit 9fa62b1a31c96715aef34f25000e882ed4ac4876 upstream.

The patch extends the family of SATA-to-USB JMicron adapters that need
FUA to be disabled and applies the same policy for uas driver.
See details in http://unix.stackexchange.com/questions/237204/

Signed-off-by: Dmitry Katsubo <dmitry.katsubo@gmail.com>
Tested-by: Dmitry Katsubo <dmitry.katsubo@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/usb/storage/uas.c          | 4 ++++
 drivers/usb/storage/unusual_devs.h | 2 +-
 drivers/usb/storage/unusual_uas.h  | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 6d3122a..75e4979 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -796,6 +796,10 @@ static int uas_slave_configure(struct scsi_device *sdev)
 	if (devinfo->flags & US_FL_NO_REPORT_OPCODES)
 		sdev->no_report_opcodes = 1;
 
+	/* A few buggy USB-ATA bridges don't understand FUA */
+	if (devinfo->flags & US_FL_BROKEN_FUA)
+		sdev->broken_fua = 1;
+
 	scsi_change_queue_depth(sdev, devinfo->qdepth - 2);
 	return 0;
 }
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 87898ca..4095824 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1987,7 +1987,7 @@ UNUSUAL_DEV(  0x14cd, 0x6600, 0x0201, 0x0201,
 		US_FL_IGNORE_RESIDUE ),
 
 /* Reported by Michael Büsch <m@bues.ch> */
-UNUSUAL_DEV(  0x152d, 0x0567, 0x0114, 0x0114,
+UNUSUAL_DEV(  0x152d, 0x0567, 0x0114, 0x0116,
 		"JMicron",
 		"USB to ATA/ATAPI Bridge",
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
index c85ea53..ccc113e 100644
--- a/drivers/usb/storage/unusual_uas.h
+++ b/drivers/usb/storage/unusual_uas.h
@@ -132,7 +132,7 @@ UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999,
 		"JMicron",
 		"JMS567",
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
-		US_FL_NO_REPORT_OPCODES),
+		US_FL_BROKEN_FUA | US_FL_NO_REPORT_OPCODES),
 
 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
 UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999,
-- 
1.9.1

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