Disable CONFIG_MODVERSIONS

[Juerg Haefliger]

[Impact]

Having CONFIG_MODVERSIONS enabled means that modules compiled for a different kernel can potentially be loaded. We don't really want that. In addition, all the master kernels since Zesty have it turned off, plus all their derivatives as well, expect for the few that are listed as affected in this bug report.

[Test Case]

$ grep CONFIG_MODVERSIONS /boot/config-$(uname -r):
CONFIG_MODVERSIONS=y

[Regression Potential]

Low. This only prevents loading of modules compiled for a different kernel.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-raspi2 - 5.4.0-1004.4

---------------
linux-raspi2 (5.4.0-1004.4) focal; urgency=medium

  * focal/linux-raspi2: 5.4.0-1004.4 -proposed tracker (LP: #1865017)

  * focal:linux-raspi2: Upstream raspberrypi patchset 2020-02-27 (LP: #1865039)
    - SAUCE: ARM: dts: Fix vchiq audio node name

  [ Ubuntu: 5.4.0-17.20 ]

  * focal/linux: 5.4.0-17.20 -proposed tracker (LP: #1865025)
  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts
  * Miscellaneous Ubuntu changes
    - SAUCE: drm/i915/execlists: fix off by one in execlists_update_context()

  [ Ubuntu: 5.4.0-16.19 ]

  * focal/linux: 5.4.0-16.19 -proposed tracker (LP: #1864889)
  * system hang: i915 Resetting rcs0 for hang on rcs0 (LP: #1861395)
    - drm/i915/execlists: Always force a context reload when rewinding RING_TAIL
  * nsleep-lat / set-timer-lat / inconsistency-check / raw_skew from timer in
    ubuntu_kernel_selftests timeout on 5.3 / 5.4 (LP: #1864626)
    - selftests/timers: Turn off timeout setting
  * [sfc-0121]enable the HiSilicon v3xx SFC driver (LP: #1860401)
    - spi: Add HiSilicon v3xx SPI NOR flash controller driver
    - MAINTAINERS: Add a maintainer for the HiSilicon v3xx SFC driver
    - [Config] CONFIG_SPI_HISI_SFC_V3XX=m
  * [hns3-0217]sync mainline kernel 5.6rc1 hns3 patchset into ubuntu HWE kernel
    branch (LP: #1863575)
    - net: hns3: add management table after IMP reset
    - net: hns3: fix VF bandwidth does not take effect in some case
    - net: hns3: fix a copying IPv6 address error in hclge_fd_get_flow_tuples()
  * [hns3-0111]sync mainline kernel 5.5rc6 hns3 patchset into ubuntu HWE kernel
    branch Edit (LP: #1859261)
    - net: hns3: schedule hclgevf_service by using delayed workqueue
    - net: hns3: remove mailbox and reset work in hclge_main
    - net: hns3: remove unnecessary work in hclgevf_main
    - net: hns3: allocate WQ with WQ_MEM_RECLAIM flag
    - net: hns3: do not schedule the periodic task when reset fail
    - net: hns3: check FE bit before calling hns3_add_frag()
    - net: hns3: remove useless mutex vport_cfg_mutex in the struct hclge_dev
    - net: hns3: optimization for CMDQ uninitialization
    - net: hns3: get FD rules location before dump in debugfs
    - net: hns3: implement ndo_features_check ops for hns3 driver
    - net: hns3: add some VF VLAN information for command "ip link show"
    - net: hns3: add a log for getting chain failure in
      hns3_nic_uninit_vector_data()
    - net: hns3: only print misc interrupt status when handling fails
    - net: hns3: add trace event support for HNS3 driver
    - net: hns3: re-organize vector handle
    - net: hns3: modify the IRQ name of TQP vector
    - net: hns3: modify an unsuitable log in hclge_map_ring_to_vector()
    - net: hns3: modify the IRQ name of misc vectors
    - net: hns3: add protection when get SFP speed as 0
    - net: hns3: replace an unsuitable variable type in
      hclge_inform_reset_assert_to_vf()
    - net: hns3: modify an unsuitable reset level for hardware error
    - net: hns3: split hclge_reset() into preparing and rebuilding part
    - net: hns3: split hclgevf_reset() into preparing and rebuilding...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-raspi2 - 5.3.0-1022.24

---------------
linux-raspi2 (5.3.0-1022.24) eoan; urgency=medium

  * Disable CONFIG_MODVERSIONS (LP: #1863245)
    - UBUNTU [Config] raspi2: Unset CONFIG_MODVERSIONS

  [ Ubuntu: 5.3.0-46.38 ]

  * eoan/linux: 5.3.0-43.36 -proposed tracker (LP: #1867301)
  * Fix AMD Stoney Ridge screen flickering under 4K resolution (LP: #1864005)
    - iommu/amd: Disable IOMMU on Stoney Ridge systems
  * Allow BPF tracing under lockdown (LP: #1868626)
    - Revert "UBUNTU: SAUCE: (efi-lockdown) Lock down kprobes"
    - Revert "bpf: Restrict bpf when kernel lockdown is in confidentiality mode"
  * Missing wireless network interface after kernel 5.3.0-43 upgrade with eoan
    (LP: #1868442)
    - iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices
  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
  * iSCSI-target: Deleting a LUN hangs in the kernel (LP: #1862682)
    - scsi: Revert "target/core: Inline transport_lun_remove_cmd()"
  * Stop using get_scalar_status command in Dell AIO uart backlight driver
    (LP: #1865402)
    - SAUCE: platform/x86: dell-uart-backlight: add get_display_mode command
  * Eoan update: upstream stable patchset 2020-03-11 (LP: #1867051)
    - Revert "drm/sun4i: dsi: Change the start delay calculation"
    - ovl: fix lseek overflow on 32bit
    - kernel/module: Fix memleak in module_add_modinfo_attrs()
    - media: iguanair: fix endpoint sanity check
    - ocfs2: fix oops when writing cloned file
    - x86/cpu: Update cached HLE state on write to TSX_CTRL_CPUID_CLEAR
    - udf: Allow writing to 'Rewritable' partitions
    - printk: fix exclusive_console replaying
    - iwlwifi: mvm: fix NVM check for 3168 devices
    - sparc32: fix struct ipc64_perm type definition
    - cls_rsvp: fix rsvp_policy
    - gtp: use __GFP_NOWARN to avoid memalloc warning
    - l2tp: Allow duplicate session creation with UDP
    - net: hsr: fix possible NULL deref in hsr_handle_frame()
    - net_sched: fix an OOB access in cls_tcindex
    - net: stmmac: Delete txtimer in suspend()
    - bnxt_en: Fix TC queue mapping.
    - tcp: clear tp->total_retrans in tcp_disconnect()
    - tcp: clear tp->delivered in tcp_disconnect()
    - tcp: clear tp->data_segs{in|out} in tcp_disconnect()
    - tcp: clear tp->segs_{in|out} in tcp_disconnect()
    - rxrpc: Fix use-after-free in rxrpc_put_local()
    - rxrpc: Fix insufficient receive notification generation
    - rxrpc: Fix missing active use pinning of rxrpc_local object
    - rxrpc: Fix NULL pointer deref due to call->conn being cleared on disconnect
    - media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
    - mfd: dln2: More sanity checking for endpoints
    - ipc/msg.c: consolidate all xxxctl_down() functions
    - tracing: Fix sched switch start/stop refcount racy updates
    - rcu: Avoid data-race in rcu_gp_fqs_check_wake()
    - brcmfmac: Fix memory leak in brcmf_usbdev_qinit
    - usb: typec: tcpci: mask event interrupts when remove driver
    - usb: gadget: legacy: set max_speed to super-speed
    - usb: gadget: f_ncm: Use atomic_t to track in-f...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-raspi2-5.3 - 5.3.0-1022.24~18.04.1

---------------
linux-raspi2-5.3 (5.3.0-1022.24~18.04.1) bionic; urgency=medium

  [ Ubuntu: 5.3.0-1022.24 ]

  * Disable CONFIG_MODVERSIONS (LP: #1863245)
    - UBUNTU [Config] raspi2: Unset CONFIG_MODVERSIONS
  * eoan/linux: 5.3.0-43.36 -proposed tracker (LP: #1867301)
  * Fix AMD Stoney Ridge screen flickering under 4K resolution (LP: #1864005)
    - iommu/amd: Disable IOMMU on Stoney Ridge systems
  * Allow BPF tracing under lockdown (LP: #1868626)
    - Revert "UBUNTU: SAUCE: (efi-lockdown) Lock down kprobes"
    - Revert "bpf: Restrict bpf when kernel lockdown is in confidentiality mode"
  * Missing wireless network interface after kernel 5.3.0-43 upgrade with eoan
    (LP: #1868442)
    - iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices
  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
  * iSCSI-target: Deleting a LUN hangs in the kernel (LP: #1862682)
    - scsi: Revert "target/core: Inline transport_lun_remove_cmd()"
  * Stop using get_scalar_status command in Dell AIO uart backlight driver
    (LP: #1865402)
    - SAUCE: platform/x86: dell-uart-backlight: add get_display_mode command
  * Eoan update: upstream stable patchset 2020-03-11 (LP: #1867051)
    - Revert "drm/sun4i: dsi: Change the start delay calculation"
    - ovl: fix lseek overflow on 32bit
    - kernel/module: Fix memleak in module_add_modinfo_attrs()
    - media: iguanair: fix endpoint sanity check
    - ocfs2: fix oops when writing cloned file
    - x86/cpu: Update cached HLE state on write to TSX_CTRL_CPUID_CLEAR
    - udf: Allow writing to 'Rewritable' partitions
    - printk: fix exclusive_console replaying
    - iwlwifi: mvm: fix NVM check for 3168 devices
    - sparc32: fix struct ipc64_perm type definition
    - cls_rsvp: fix rsvp_policy
    - gtp: use __GFP_NOWARN to avoid memalloc warning
    - l2tp: Allow duplicate session creation with UDP
    - net: hsr: fix possible NULL deref in hsr_handle_frame()
    - net_sched: fix an OOB access in cls_tcindex
    - net: stmmac: Delete txtimer in suspend()
    - bnxt_en: Fix TC queue mapping.
    - tcp: clear tp->total_retrans in tcp_disconnect()
    - tcp: clear tp->delivered in tcp_disconnect()
    - tcp: clear tp->data_segs{in|out} in tcp_disconnect()
    - tcp: clear tp->segs_{in|out} in tcp_disconnect()
    - rxrpc: Fix use-after-free in rxrpc_put_local()
    - rxrpc: Fix insufficient receive notification generation
    - rxrpc: Fix missing active use pinning of rxrpc_local object
    - rxrpc: Fix NULL pointer deref due to call->conn being cleared on disconnect
    - media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
    - mfd: dln2: More sanity checking for endpoints
    - ipc/msg.c: consolidate all xxxctl_down() functions
    - tracing: Fix sched switch start/stop refcount racy updates
    - rcu: Avoid data-race in rcu_gp_fqs_check_wake()
    - brcmfmac: Fix memory leak in brcmf_usbdev_qinit
    - usb: typec: tcpci: mask event interrupts when remove driver
    - usb: gadget: legacy: set max_speed to super-speed
    - usb: gadget: f_ncm:...