1. 16 Sep, 2019 32 commits
  2. 15 Sep, 2019 2 commits
    • Linus Torvalds's avatar
      Linux 5.3 · 4d856f72
      Linus Torvalds authored
      4d856f72
    • Linus Torvalds's avatar
      Revert "ext4: make __ext4_get_inode_loc plug" · 72dbcf72
      Linus Torvalds authored
      This reverts commit b03755ad.
      
      This is sad, and done for all the wrong reasons.  Because that commit is
      good, and does exactly what it says: avoids a lot of small disk requests
      for the inode table read-ahead.
      
      However, it turns out that it causes an entirely unrelated problem: the
      getrandom() system call was introduced back in 2014 by commit
      c6e9d6f3
      
       ("random: introduce getrandom(2) system call"), and people
      use it as a convenient source of good random numbers.
      
      But part of the current semantics for getrandom() is that it waits for
      the entropy pool to fill at least partially (unlike /dev/urandom).  And
      at least ArchLinux apparently has a systemd that uses getrandom() at
      boot time, and the improvements in IO patterns means that existing
      installations suddenly start hanging, waiting for entropy that will
      never happen.
      
      It seems to be an unlucky combination of not _quite_ enough entropy,
      together with a particular systemd version and configuration.  Lennart
      says that the systemd-random-seed process (which is what does this early
      access) is supposed to not block any other boot activity, but sadly that
      doesn't actually seem to be the case (possibly due bogus dependencies on
      cryptsetup for encrypted swapspace).
      
      The correct fix is to fix getrandom() to not block when it's not
      appropriate, but that fix is going to take a lot more discussion.  Do we
      just make it act like /dev/urandom by default, and add a new flag for
      "wait for entropy"? Do we add a boot-time option? Or do we just limit
      the amount of time it will wait for entropy?
      
      So in the meantime, we do the revert to give us time to discuss the
      eventual fix for the fundamental problem, at which point we can re-apply
      the ext4 inode table access optimization.
      
      Reported-by: default avatarAhmed S. Darwish <darwish.07@gmail.com>
      Cc: Ted Ts'o <tytso@mit.edu>
      Cc: Willy Tarreau <w@1wt.eu>
      Cc: Alexander E. Patrakov <patrakov@gmail.com>
      Cc: Lennart Poettering <mzxreary@0pointer.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      72dbcf72
  3. 14 Sep, 2019 6 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