1. 28 Apr, 2017 10 commits
  2. 11 Apr, 2017 7 commits
  3. 04 Apr, 2017 10 commits
  4. 03 Apr, 2017 2 commits
    • Arnd Bergmann's avatar
      PCI: dwc: Select PCI_HOST_COMMON for hisi · 6665f8a3
      Arnd Bergmann authored
      Without PCI_HOST_COMMON support enabled, we get a link error:
      
        drivers/pci/dwc/built-in.o: In function `hisi_pcie_map_bus':
        pcie-hisi.c:(.text+0x8860): undefined reference to `pci_ecam_map_bus'
        drivers/pci/dwc/built-in.o: In function `hisi_pcie_almost_ecam_probe':
        pcie-hisi.c:(.text+0x88b4): undefined reference to `pci_host_common_probe'
      
      Add an explicit 'select', as the other users have.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Acked-by: default avatarJingoo Han <jingoohan1@gmail.com>
      6665f8a3
    • Tomasz Nowicki's avatar
      PCI: thunder-pem: Fix legacy firmware PEM-specific resources · feb199eb
      Tomasz Nowicki authored
      SZ_16M PEM resource size includes PEM-specific register and its children
      resources. Reservation of the whole SZ_16M range leads to child device
      driver failure when pcieport driver is requesting resources:
      
        pcieport 0004:1f:00.0: can't enable device: BAR 0 [mem 0x87e0c0f00000-0x87e0c0ffffff 64bit] not claimed
      
      So we cannot reserve full 16M here and instead we want to reserve
      PEM-specific register only which is SZ_64K.
      
      At the end increase PEM resource to SZ_16M since this is what
      thunder_pem_init() call expects for proper initialization.
      
      Fixes: 9abb27c7 ("PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller")
      Signed-off-by: default avatarTomasz Nowicki <tn@semihalf.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      CC: stable@vger.kernel.org	# v4.10+
      feb199eb
  5. 23 Mar, 2017 2 commits
  6. 09 Mar, 2017 1 commit
    • Bjorn Helgaas's avatar
      PCI: iproc: Save host bridge window resource in struct iproc_pcie · 6e347b5e
      Bjorn Helgaas authored
      The host bridge memory window resource is inserted into the iomem_resource
      tree and cannot be deallocated until the host bridge itself is removed.
      
      Previously, the window was on the stack, which meant the iomem_resource
      entry pointed into the stack and was corrupted as soon as the probe
      function returned, which caused memory corruption and errors like this:
      
        pcie_iproc_bcma bcma0:8: resource collision: [mem 0x40000000-0x47ffffff] conflicts with PCIe MEM space [mem 0x40000000-0x47ffffff]
      
      Move the memory window resource from the stack into struct iproc_pcie so
      its lifetime matches that of the host bridge.
      
      Fixes: c3245a56 ("PCI: iproc: Request host bridge window resources")
      Reported-and-tested-by: default avatarRafał Miłecki <zajec5@gmail.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      CC: stable@vger.kernel.org	# v4.8+
      6e347b5e
  7. 07 Mar, 2017 3 commits
    • Yinghai Lu's avatar
      PCI/ASPM: Always set link->downstream to avoid NULL dereference on remove · 3bd7db63
      Yinghai Lu authored
      We call pcie_aspm_exit_link_state() when we remove a device.  If the device
      is the last PCIe function to be removed below a bridge and the bridge has
      an ASPM link_state struct, we disable ASPM on the link.  Disabling ASPM
      requires link->downstream (used in pcie_config_aspm_link()).
      
      We previously set link->downstream in pcie_aspm_cap_init(), but only if the
      device was not blacklisted.  Removing the blacklisted device caused a NULL
      pointer dereference in the pcie_aspm_exit_link_state() ->
      pcie_config_aspm_link() path:
      
        # echo 1 > /sys/bus/pci/devices/0000\:0b\:00.0/remove
        ...
         BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
         IP: pcie_config_aspm_link+0x5d/0x2b0
         Call Trace:
          pcie_aspm_exit_link_state+0x75/0x130
          pci_stop_bus_device+0xa4/0xb0
          pci_stop_and_remove_bus_device_locked+0x1a/0x30
          remove_store+0x50/0x70
          dev_attr_store+0x18/0x30
          sysfs_kf_write+0x44/0x60
          kernfs_fop_write+0x10e/0x190
          __vfs_write+0x28/0x110
          ? rcu_read_lock_sched_held+0x5d/0x80
          ? rcu_sync_lockdep_assert+0x2c/0x60
          ? __sb_start_write+0x173/0x1a0
          ? vfs_write+0xb3/0x180
          vfs_write+0xc4/0x180
          SyS_write+0x49/0xa0
          do_syscall_64+0xa6/0x1c0
          entry_SYSCALL64_slow_path+0x25/0x25
         ---[ end trace bd187ee0267df5d9 ]---
      
      To avoid this, set link->downstream in alloc_pcie_link_state(), so every
      pcie_link_state structure has a valid link->downstream pointer.
      
      [bhelgaas: changelog]
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Acked-by: default avatarRajat Jain <rajatja@google.com>
      CC: stable@vger.kernel.org
      3bd7db63
    • Ethan Zhao's avatar
      PCI: Prevent VPD access for QLogic ISP2722 · 0d5370d1
      Ethan Zhao authored
      QLogic ISP2722-based 16/32Gb Fibre Channel to PCIe Adapter has the VPD
      access issue too, while read the common pci-sysfs access interface shown as
      
       /sys/devices/pci0000:00/0000:00:03.2/0000:0b:00.0/vpd
      
      with simple 'cat' could cause system hang and panic:
      
        Kernel panic - not syncing: An NMI occurred. Depending on your system the reason for the NMI is logged in any one of the following resources:
        1. Integrated Management Log (IML)
        2. OA Syslog
        3. OA Forward Progress Log
        4. iLO Event Log
        CPU: 0 PID: 15070 Comm: udevadm Not tainted 4.1.12
        Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 12/27/2015
         0000000000000086 000000007f0cdf51 ffff880c4fa05d58 ffffffff817193de
         ffffffffa00b42d8 0000000000000075 ffff880c4fa05dd8 ffffffff81714072
         0000000000000008 ffff880c4fa05de8 ffff880c4fa05d88 000000007f0cdf51
        Call Trace:
         <NMI>  [<ffffffff817193de>] dump_stack+0x63/0x81
         [<ffffffff81714072>] panic+0xd0/0x20e
         [<ffffffffa00b390d>] hpwdt_pretimeout+0xdd/0xe0 [hpwdt]
         [<ffffffff81021fc9>] ? sched_clock+0x9/0x10
         [<ffffffff8101c101>] nmi_handle+0x91/0x170
         [<ffffffff8101c10c>] ? nmi_handle+0x9c/0x170
         [<ffffffff8101c5fe>] io_check_error+0x1e/0xa0
         [<ffffffff8101c719>] default_do_nmi+0x99/0x140
         [<ffffffff8101c8b4>] do_nmi+0xf4/0x170
         [<ffffffff817232c5>] end_repeat_nmi+0x1a/0x1e
         [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
         [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
         [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
         <<EOE>>  [<ffffffff815db4b3>] raw_pci_read+0x23/0x40
         [<ffffffff815db4fc>] pci_read+0x2c/0x30
         [<ffffffff8136f612>] pci_user_read_config_word+0x72/0x110
         [<ffffffff8136f746>] pci_vpd_pci22_wait+0x96/0x130
         [<ffffffff8136ff9b>] pci_vpd_pci22_read+0xdb/0x1a0
         [<ffffffff8136ea30>] pci_read_vpd+0x20/0x30
         [<ffffffff8137d590>] read_vpd_attr+0x30/0x40
         [<ffffffff8128e037>] sysfs_kf_bin_read+0x47/0x70
         [<ffffffff8128d24e>] kernfs_fop_read+0xae/0x180
         [<ffffffff8120dd97>] __vfs_read+0x37/0x100
         [<ffffffff812ba7e4>] ? security_file_permission+0x84/0xa0
         [<ffffffff8120e366>] ? rw_verify_area+0x56/0xe0
         [<ffffffff8120e476>] vfs_read+0x86/0x140
         [<ffffffff8120f3f5>] SyS_read+0x55/0xd0
         [<ffffffff81720f2e>] system_call_fastpath+0x12/0x71
        Shutting down cpus with NMI
        Kernel Offset: disabled
        drm_kms_helper: panic occurred, switching back to text console
      
      So blacklist the access to its VPD.
      Signed-off-by: default avatarEthan Zhao <ethan.zhao@oracle.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      CC: stable@vger.kernel.org	# v4.6+
      0d5370d1
    • Jaehoon Chung's avatar
      PCI: exynos: Initialize elbi_base even when using PHY framework · 544714d8
      Jaehoon Chung authored
      Even when using the PHY framework, we need the elbi_base.  Before this
      patch, we didn't initialize elbi_base, which caused NULL pointer
      dereferences later.
      
      Fixes: e7cd7ef5 ("PCI: exynos: Support the PHY generic framework")
      Signed-off-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      544714d8
  8. 05 Mar, 2017 2 commits
    • Linus Torvalds's avatar
      Linux 4.11-rc1 · c1ae3cfa
      Linus Torvalds authored
      c1ae3cfa
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 8d70eeb8
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix double-free in batman-adv, from Sven Eckelmann.
      
       2) Fix packet stats for fast-RX path, from Joannes Berg.
      
       3) Netfilter's ip_route_me_harder() doesn't handle request sockets
          properly, fix from Florian Westphal.
      
       4) Fix sendmsg deadlock in rxrpc, from David Howells.
      
       5) Add missing RCU locking to transport hashtable scan, from Xin Long.
      
       6) Fix potential packet loss in mlxsw driver, from Ido Schimmel.
      
       7) Fix race in NAPI handling between poll handlers and busy polling,
          from Eric Dumazet.
      
       8) TX path in vxlan and geneve need proper RCU locking, from Jakub
          Kicinski.
      
       9) SYN processing in DCCP and TCP need to disable BH, from Eric
          Dumazet.
      
      10) Properly handle net_enable_timestamp() being invoked from IRQ
          context, also from Eric Dumazet.
      
      11) Fix crash on device-tree systems in xgene driver, from Alban Bedel.
      
      12) Do not call sk_free() on a locked socket, from Arnaldo Carvalho de
          Melo.
      
      13) Fix use-after-free in netvsc driver, from Dexuan Cui.
      
      14) Fix max MTU setting in bonding driver, from WANG Cong.
      
      15) xen-netback hash table can be allocated from softirq context, so use
          GFP_ATOMIC. From Anoob Soman.
      
      16) Fix MAC address change bug in bgmac driver, from Hari Vyas.
      
      17) strparser needs to destroy strp_wq on module exit, from WANG Cong.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (69 commits)
        strparser: destroy workqueue on module exit
        sfc: fix IPID endianness in TSOv2
        sfc: avoid max() in array size
        rds: remove unnecessary returned value check
        rxrpc: Fix potential NULL-pointer exception
        nfp: correct DMA direction in XDP DMA sync
        nfp: don't tell FW about the reserved buffer space
        net: ethernet: bgmac: mac address change bug
        net: ethernet: bgmac: init sequence bug
        xen-netback: don't vfree() queues under spinlock
        xen-netback: keep a local pointer for vif in backend_disconnect()
        netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails
        netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups
        netfilter: nf_conntrack_sip: fix wrong memory initialisation
        can: flexcan: fix typo in comment
        can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
        can: gs_usb: fix coding style
        can: gs_usb: Don't use stack memory for USB transfers
        ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines
        ixgbe: update the rss key on h/w, when ethtool ask for it
        ...
      8d70eeb8
  9. 04 Mar, 2017 3 commits
    • Linus Torvalds's avatar
      Merge tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 2d62e076
      Linus Torvalds authored
      Pull more KVM updates from Radim Krčmář:
       "Second batch of KVM changes for the 4.11 merge window:
      
        PPC:
         - correct assumption about ASDR on POWER9
         - fix MMIO emulation on POWER9
      
        x86:
         - add a simple test for ioperm
         - cleanup TSS (going through KVM tree as the whole undertaking was
           caused by VMX's use of TSS)
         - fix nVMX interrupt delivery
         - fix some performance counters in the guest
      
        ... and two cleanup patches"
      
      * tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: nVMX: Fix pending events injection
        x86/kvm/vmx: remove unused variable in segment_base()
        selftests/x86: Add a basic selftest for ioperm
        x86/asm: Tidy up TSS limit code
        kvm: convert kvm.users_count from atomic_t to refcount_t
        KVM: x86: never specify a sample period for virtualized in_tx_cp counters
        KVM: PPC: Book3S HV: Don't use ASDR for real-mode HPT faults on POWER9
        KVM: PPC: Book3S HV: Fix software walk of guest process page tables
      2d62e076
    • Linus Torvalds's avatar
      Merge tag 'docs-4.11-fixes' of git://git.lwn.net/linux · be834aaf
      Linus Torvalds authored
      Pull documentation fixes from Jonathan Corbet:
       "A few fixes for the docs tree, including one for a 4.11 build
        regression"
      
      * tag 'docs-4.11-fixes' of git://git.lwn.net/linux:
        Documentation/sphinx: fix primary_domain configuration
        docs: Fix htmldocs build failure
        doc/ko_KR/memory-barriers: Update control-dependencies section
        pcieaer doc: update the link
        Documentation: Update path to sysrq.txt
      be834aaf
    • Linus Torvalds's avatar
      Merge tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 91aff98b
      Linus Torvalds authored
      Pull staging/IIO driver fixes from Greg KH:
       "Here are a few small staging and IIO driver fixes for issues that
        showed up after the big set if changes you merged last week.
      
        Nothing major, just small bugs resolved in some IIO drivers, a lustre
        allocation fix, and some RaspberryPi driver fixes for reported
        problems, as well as a MAINTAINERS entry update.
      
        All of these have been in linux-next for a week with no reported
        issues"
      
      * tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: fsl-mc: fix warning in DT ranges parser
        MAINTAINERS: Remove Noralf Trønnes as fbtft maintainer
        staging: vchiq_2835_arm: Make cache-line-size a required DT property
        staging: bcm2835/mmal-vchiq: unlock on error in buffer_from_host()
        staging/lustre/lnet: Fix allocation size for sv_cpt_data
        iio: adc: xilinx: Fix error handling
        iio: 104-quad-8: Fix off-by-one error when addressing flag register
        iio: adc: handle unknow of_device_id data
      91aff98b