Disco update: 5.0.21 upstream stable release

[Khaled El Mously]

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

       5.0.21 upstream stable release
       from git://git.kernel.org/

The following patches were applied:
* bonding/802.3ad: fix slave link initialization transition states
* cxgb4: offload VLAN flows regardless of VLAN ethtype
* inet: switch IP ID generator to siphash
* ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
* ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
* ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
* ipv6: Fix redirect with VRF
* llc: fix skb leak in llc_build_and_send_ui_pkt()
* mlxsw: spectrum_acl: Avoid warning after identical rules insertion
* net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
* net: fec: fix the clk mismatch in failed_reset path
* net-gro: fix use-after-free read in napi_gro_frags()
* net: mvneta: Fix err code path of probe
* net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
* net: phy: marvell10g: report if the PHY fails to boot firmware
* net: sched: don't use tc_action->order during action dump
* net: stmmac: fix reset gpio free missing
* r8169: fix MAC address being lost in PCI D3
* usbnet: fix kernel crash after disconnect
* net/mlx5: Avoid double free in fs init error unwinding path
* tipc: Avoid copying bytes beyond the supplied data
* net/mlx5: Allocate root ns memory using kzalloc to match kfree
* net/mlx5e: Disable rxhash when CQE compress is enabled
* net: stmmac: fix ethtool flow control not able to get/set
* net: stmmac: dma channel control register need to be init first
* bnxt_en: Fix aggregation buffer leak under OOM condition.
* bnxt_en: Fix possible BUG() condition when calling pci_disable_msix().
* bnxt_en: Reduce memory usage when running in kdump kernel.
* net/tls: fix state removal with feature flags off
* net/tls: don't ignore netdev notifications if no TLS features
* cxgb4: Revert "cxgb4: Remove SGE_HOST_PAGE_SIZE dependency on page size"
* net: correct zerocopy refcnt with udp MSG_MORE
* crypto: vmx - ghash: do nosimd fallback manually
* xen/pciback: Don't disable PCI_COMMAND on PCI device reset.
* Revert "tipc: fix modprobe tipc failed after switch order of device registration"
* tipc: fix modprobe tipc failed after switch order of device registration
* Linux 5.0.21

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.0.0-27.28

---------------
linux (5.0.0-27.28) disco; urgency=medium

  * disco/linux: 5.0.0-27.28 -proposed tracker (LP: #1840816)

  * [Potential Regression] System crashes when running ftrace test in
    ubuntu_kernel_selftests (LP: #1840750)
    - x86/kprobes: Set instruction page as executable

linux (5.0.0-26.27) disco; urgency=medium

  * disco/linux: 5.0.0-26.27 -proposed tracker (LP: #1839972)

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

  * alsa/hdmi: add icelake hdmi audio support for a Dell machine (LP: #1836916)
    - ALSA: hda: hdmi - add Icelake support
    - ALSA: hda/hdmi - Remove duplicated define
    - ALSA: hda/hdmi - Fix i915 reverse port/pin mapping

  * input/mouse: alps trackpoint-only device doesn't work (LP: #1836752)
    - Input: alps - don't handle ALPS cs19 trackpoint-only device
    - Input: alps - fix a mismatch between a condition check and its comment

  * [18.04 FEAT] Enhanced hardware support (LP: #1836857)
    - s390: report new CPU capabilities
    - s390: add alignment hints to vector load and store

  * System does not auto detect disconnection of external monitor (LP: #1835001)
    - drm/i915: Add support for retrying hotplug
    - drm/i915: Enable hotplug retry

  * [18.04 FEAT] Enhanced CPU-MF hardware counters - kernel part (LP: #1836860)
    - s390/cpum_cf: Add support for CPU-MF SVN 6
    - s390/cpumf: Add extended counter set definitions for model 8561 and 8562

  * EeePC 1005px laptop backlight is off after system boot up (LP: #1837117)
    - platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys from
      asus_nb_wmi

  * br_netfilter: namespace sysctl operations (LP: #1836910)
    - netfilter: bridge: port sysctls to use brnf_net
    - netfilter: bridge: namespace bridge netfilter sysctls
    - netfilter: bridge: prevent UAF in brnf_exit_net()

  * ideapad_laptop disables WiFi/BT radios on Lenovo Y540 (LP: #1837136)
    - platform/x86: ideapad-laptop: Remove no_hw_rfkill_list

  * shiftfs: allow overlayfs (LP: #1838677)
    - SAUCE: shiftfs: enable overlayfs on shiftfs

  * bcache: bch_allocator_thread(): hung task timeout (LP: #1784665)
    - bcache: never writeback a discard operation
    - bcache: improve bcache_reboot()
    - SAUCE: bcache: fix deadlock in bcache_allocator

  * Regressions in CMA allocation rework (LP: #1839395)
    - dma-contiguous: do not overwrite align in dma_alloc_contiguous()
    - dma-contiguous: page-align the size in dma_free_contiguous()

  * CVE-2019-3900
    - vhost: introduce vhost_exceeds_weight()
    - vhost_net: fix possible infinite loop
    - vhost: vsock: add weight support
    - vhost: scsi: add weight support

  * Disco update: 5.0.21 upstream stable release (LP: #1837518)
    - bonding/802.3ad: fix slave link initialization transition states
    - cxgb4: offload VLAN flows regardless of VLAN ethtype
    - inet: switch IP ID generator to siphash
    - ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
    - ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
    - ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
    - ipv6: Fix redi...