1. 16 Sep, 2019 1 commit
  2. 15 Sep, 2019 1 commit
  3. 14 Sep, 2019 13 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 1609d760
      Linus Torvalds authored
      Pull kvm fixes from Paolo Bonzini:
       "The main change here is a revert of reverts. We recently simplified
        some code that was thought unnecessary; however, since then KVM has
        grown quite a few cond_resched()s and for that reason the simplified
        code is prone to livelocks---one CPUs tries to empty a list of guest
        page tables while the others keep adding to them. This adds back the
        generation-based zapping of guest page tables, which was not
        unnecessary after all.
      
        On top of this, there is a fix for a kernel memory leak and a couple
        of s390 fixlets as well"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86/mmu: Reintroduce fast invalidate/zap for flushing memslot
        KVM: x86: work around leak of uninitialized stack contents
        KVM: nVMX: handle page fault in vmread
        KVM: s390: Do not leak kernel stack data in the KVM_S390_INTERRUPT ioctl
        KVM: s390: kvm_s390_vm_start_migration: check dirty_bitmap before using it as target for memset()
      1609d760
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · 1f9c632c
      Linus Torvalds authored
      Pull virtio fix from Michael Tsirkin:
       "A last minute revert
      
        The 32-bit build got broken by the latest defence in depth patch.
        Revert and we'll try again in the next cycle"
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
        Revert "vhost: block speculation of translated descriptors"
      1f9c632c
    • Linus Torvalds's avatar
      Merge tag 'riscv/for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · b03c036e
      Linus Torvalds authored
      Pull RISC-V fix from Paul Walmsley:
       "Last week, Palmer and I learned that there was an error in the RISC-V
        kernel image header format that could make it less compatible with the
        ARM64 kernel image header format. I had missed this error during my
        original reviews of the patch.
      
        The kernel image header format is an interface that impacts
        bootloaders, QEMU, and other user tools. Those packages must be
        updated to align with whatever is merged in the kernel. We would like
        to avoid proliferating these image formats by keeping the RISC-V
        header as close as possible to the existing ARM64 header. Since the
        arch/riscv patch that adds support for the image header was merged
        with our v5.3-rc1 pull request as commit 0f327f2a ("RISC-V: Add
        an Image header that boot loader can parse."), we think it wise to try
        to fix this error before v5.3 is released.
      
        The fix itself should be backwards-compatible with any project that
        has already merged support for premature versions of this interface.
        It primarily involves ensuring that the RISC-V image header has
        something useful in the same field as the ARM64 image header"
      
      * tag 'riscv/for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        riscv: modify the Image header to improve compatibility with the ARM64 header
      b03c036e
    • Michael S. Tsirkin's avatar
      Revert "vhost: block speculation of translated descriptors" · 0d4a3f2a
      Michael S. Tsirkin authored
      This reverts commit a89db445.
      
      I was hasty to include this patch, and it breaks the build on 32 bit.
      Defence in depth is good but let's do it properly.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
      0d4a3f2a
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 36024fcf
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Don't corrupt xfrm_interface parms before validation, from Nicolas
          Dichtel.
      
       2) Revert use of usb-wakeup in btusb, from Mario Limonciello.
      
       3) Block ipv6 packets in bridge netfilter if ipv6 is disabled, from
          Leonardo Bras.
      
       4) IPS_OFFLOAD not honored in ctnetlink, from Pablo Neira Ayuso.
      
       5) Missing ULP check in sock_map, from John Fastabend.
      
       6) Fix receive statistic handling in forcedeth, from Zhu Yanjun.
      
       7) Fix length of SKB allocated in 6pack driver, from Christophe
          JAILLET.
      
       8) ip6_route_info_create() returns an error pointer, not NULL. From
          Maciej Żenczykowski.
      
       9) Only add RDS sock to the hashes after rs_transport is set, from
          Ka-Cheong Poon.
      
      10) Don't double clean TX descriptors in ixgbe, from Ilya Maximets.
      
      11) Presence of transmit IPSEC offload in an SKB is not tested for
          correctly in ixgbe and ixgbevf. From Steffen Klassert and Jeff
          Kirsher.
      
      12) Need rcu_barrier() when register_netdevice() takes one of the
          notifier based failure paths, from Subash Abhinov Kasiviswanathan.
      
      13) Fix leak in sctp_do_bind(), from Mao Wenan.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits)
        cdc_ether: fix rndis support for Mediatek based smartphones
        sctp: destroy bucket if failed to bind addr
        sctp: remove redundant assignment when call sctp_get_port_local
        sctp: change return type of sctp_get_port_local
        ixgbevf: Fix secpath usage for IPsec Tx offload
        sctp: Fix the link time qualifier of 'sctp_ctrlsock_exit()'
        ixgbe: Fix secpath usage for IPsec TX offload.
        net: qrtr: fix memort leak in qrtr_tun_write_iter
        net: Fix null de-reference of device refcount
        ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'
        tun: fix use-after-free when register netdev failed
        tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR
        ixgbe: fix double clean of Tx descriptors with xdp
        ixgbe: Prevent u8 wrapping of ITR value to something less than 10us
        mlx4: fix spelling mistake "veify" -> "verify"
        net: hns3: fix spelling mistake "undeflow" -> "underflow"
        net: lmc: fix spelling mistake "runnin" -> "running"
        NFC: st95hf: fix spelling mistake "receieve" -> "receive"
        net/rds: An rds_sock is added too early to the hash table
        mac80211: Do not send Layer 2 Update frame before authorization
        ...
      36024fcf
    • Linus Torvalds's avatar
      Merge tag 'mmc-v5.3-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · 1c4c5e25
      Linus Torvalds authored
      Pull MMC fixes from Ulf Hansson:
      
       - tmio: Fixup runtime PM management during probe and remove
      
       - sdhci-pci-o2micro: Fix eMMC initialization for an AMD SoC
      
       - bcm2835: Prevent lockups when terminating work
      
      * tag 'mmc-v5.3-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
        mmc: tmio: Fixup runtime PM management during remove
        mmc: tmio: Fixup runtime PM management during probe
        Revert "mmc: tmio: move runtime PM enablement to the driver implementations"
        Revert "mmc: sdhci: Remove unneeded quirk2 flag of O2 SD host controller"
        Revert "mmc: bcm2835: Terminate timeout work synchronously"
      1c4c5e25
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2019-09-13' of git://anongit.freedesktop.org/drm/drm · 592b8d87
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "From the maintainer summit, just some last minute fixes for final:
      
        lima:
         - fix gem_wait ioctl
      
        core:
         - constify modes list
      
        i915:
         - DP MST high color depth regression
         - GPU hangs on vulkan compute workloads"
      
      * tag 'drm-fixes-2019-09-13' of git://anongit.freedesktop.org/drm/drm:
        drm/lima: fix lima_gem_wait() return value
        drm/i915: Restore relaxed padding (OCL_OOB_SUPPRES_ENABLE) for skl+
        drm/i915: Limit MST to <= 8bpc once again
        drm/modes: Make the whitelist more const
      592b8d87
    • David S. Miller's avatar
      Merge tag 'wireless-drivers-next-for-davem-2019-09-14' of... · a3d3c74d
      David S. Miller authored
      Merge tag 'wireless-drivers-next-for-davem-2019-09-14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
      
      Kalle Valo says:
      
      ====================
      wireless-drivers-next patches for 5.4
      
      Last set of patches for 5.4. wil6210 and rtw88 being most active this
      time, but ath9k also having a new module to load devices without
      EEPROM.
      
      Major changes:
      
      wil6210
      
      * add support for Enhanced Directional Multi-Gigabit (EDMG) channels 9-11
      
      * add debugfs file to show PCM ring content
      
      * report boottime_ns in scan results
      
      ath9k
      
      * add a separate loader for AR92XX (and older) pci(e) without eeprom
      
      brcmfmac
      
      * use the same wiphy after PCIe reset to not confuse the user space
      
      rtw88
      
      * enable interrupt migration
      
      * enable AMSDU in AMPDU aggregation
      
      * report RX power for each antenna
      
      * enable to DPK and IQK calibration methods to improve performance
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a3d3c74d
    • Paolo Bonzini's avatar
      Merge tag 'kvm-s390-master-5.3-1' of... · a9c20bb0
      Paolo Bonzini authored
      Merge tag 'kvm-s390-master-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master
      
      KVM: s390: Fixes for 5.3
      
      - prevent a user triggerable oops in the migration code
      - do not leak kernel stack content
      a9c20bb0
    • Sean Christopherson's avatar
      KVM: x86/mmu: Reintroduce fast invalidate/zap for flushing memslot · 002c5f73
      Sean Christopherson authored
      James Harvey reported a livelock that was introduced by commit
      d012a06a ("Revert "KVM: x86/mmu: Zap only the relevant pages when
      removing a memslot"").
      
      The livelock occurs because kvm_mmu_zap_all() as it exists today will
      voluntarily reschedule and drop KVM's mmu_lock, which allows other vCPUs
      to add shadow pages.  With enough vCPUs, kvm_mmu_zap_all() can get stuck
      in an infinite loop as it can never zap all pages before observing lock
      contention or the need to reschedule.  The equivalent of kvm_mmu_zap_all()
      that was in use at the time of the reverted commit (4e103134, "KVM:
      x86/mmu: Zap only the relevant pages when removing a memslot") employed
      a fast invalidate mechanism and was not susceptible to the above livelock.
      
      There are three ways to fix the livelock:
      
      - Reverting the revert (commit d012a06a) is not a viable option as
        the revert is needed to fix a regression that occurs when the guest has
        one or more assigned devices.  It's unlikely we'll root cause the device
        assignment regression soon enough to fix the regression timely.
      
      - Remove the conditional reschedule from kvm_mmu_zap_all().  However, although
        removing the reschedule would be a smaller code change, it's less safe
        in the sense that the resulting kvm_mmu_zap_all() hasn't been used in
        the wild for flushing memslots since the fast invalidate mechanism was
        introduced by commit 6ca18b69 ("KVM: x86: use the fast way to
        invalidate all pages"), back in 2013.
      
      - Reintroduce the fast invalidate mechanism and use it when zapping shadow
        pages in response to a memslot being deleted/moved, which is what this
        patch does.
      
      For all intents and purposes, this is a revert of commit ea145aac
      ("Revert "KVM: MMU: fast invalidate all pages"") and a partial revert of
      commit 7390de1e ("Revert "KVM: x86: use the fast way to invalidate
      all pages""), i.e. restores the behavior of commit 5304b8d3 ("KVM:
      MMU: fast invalidate all pages") and commit 6ca18b69 ("KVM: x86:
      use the fast way to invalidate all pages") respectively.
      
      Fixes: d012a06a ("Revert "KVM: x86/mmu: Zap only the relevant pages when removing a memslot"")
      Reported-by: default avatarJames Harvey <jamespharvey20@gmail.com>
      Cc: Alex Willamson <alex.williamson@redhat.com>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      002c5f73
    • Fuqian Huang's avatar
      KVM: x86: work around leak of uninitialized stack contents · 541ab2ae
      Fuqian Huang authored
      Emulation of VMPTRST can incorrectly inject a page fault
      when passed an operand that points to an MMIO address.
      The page fault will use uninitialized kernel stack memory
      as the CR2 and error code.
      
      The right behavior would be to abort the VM with a KVM_EXIT_INTERNAL_ERROR
      exit to userspace; however, it is not an easy fix, so for now just ensure
      that the error code and CR2 are zero.
      Signed-off-by: default avatarFuqian Huang <huangfq.daxian@gmail.com>
      Cc: stable@vger.kernel.org
      [add comment]
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      541ab2ae
    • Paolo Bonzini's avatar
      KVM: nVMX: handle page fault in vmread · f7eea636
      Paolo Bonzini authored
      The implementation of vmread to memory is still incomplete, as it
      lacks the ability to do vmread to I/O memory just like vmptrst.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      f7eea636
    • Paul Walmsley's avatar
      riscv: modify the Image header to improve compatibility with the ARM64 header · 474efecb
      Paul Walmsley authored
      Part of the intention during the definition of the RISC-V kernel image
      header was to lay the groundwork for a future merge with the ARM64
      image header.  One error during my original review was not noticing
      that the RISC-V header's "magic" field was at a different size and
      position than the ARM64's "magic" field.  If the existing ARM64 Image
      header parsing code were to attempt to parse an existing RISC-V kernel
      image header format, it would see a magic number 0.  This is
      undesirable, since it's our intention to align as closely as possible
      with the ARM64 header format.  Another problem was that the original
      "res3" field was not being initialized correctly to zero.
      
      Address these issues by creating a 32-bit "magic2" field in the RISC-V
      header which matches the ARM64 "magic" field.  RISC-V binaries will
      store "RSC\x05" in this field.  The intention is that the use of the
      existing 64-bit "magic" field in the RISC-V header will be deprecated
      over time.  Increment the minor version number of the file format to
      indicate this change, and update the documentation accordingly.  Fix
      the assembler directives in head.S to ensure that reserved fields are
      properly zero-initialized.
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      Reported-by: default avatarPalmer Dabbelt <palmer@sifive.com>
      Reviewed-by: default avatarPalmer Dabbelt <palmer@sifive.com>
      Cc: Atish Patra <atish.patra@wdc.com>
      Cc: Karsten Merker <merker@debian.org>
      Link: https://lore.kernel.org/linux-riscv/194c2f10c9806720623430dbf0cc59a965e50448.camel@wdc.com/T/#u
      Link: https://lore.kernel.org/linux-riscv/mhng-755b14c4-8f35-4079-a7ff-e421fd1b02bc@palmer-si-x1e/T/#t
      474efecb
  4. 13 Sep, 2019 25 commits