linux-kvm: please support kexec

Bug #1799791 reported by Steve Langasek
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-kvm (Ubuntu)
Fix Released
Medium
Connor Kuehl
Xenial
Fix Released
Undecided
Connor Kuehl
Bionic
Fix Released
Undecided
Connor Kuehl
Cosmic
Fix Released
Medium
Connor Kuehl
Disco
Fix Released
Undecided
Connor Kuehl

Bug Description

linux-kvm doesn't support kexec.

Adding support for kexec would enable other interesting uses of linux-kvm, such as for a linuxboot embedded kernel in kvm.

Please enable CONFIG_KEXEC=y, CONFIG_KEXEC_FILE=y in linux-kvm.

Changed in linux-kvm (Ubuntu):
importance: Undecided → Medium
status: New → Triaged
Changed in linux-kvm (Ubuntu Bionic):
status: New → Triaged
importance: Undecided → Medium
Changed in linux-kvm (Ubuntu Cosmic):
assignee: nobody → Joseph Salisbury (jsalisbury)
Changed in linux-kvm (Ubuntu Bionic):
assignee: nobody → Joseph Salisbury (jsalisbury)
Changed in linux-kvm (Ubuntu Cosmic):
status: Triaged → In Progress
Changed in linux-kvm (Ubuntu Bionic):
status: Triaged → In Progress
no longer affects: linux-kvm (Ubuntu Bionic)
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

I built a test kernel from the linux-kvm repo. This repo already has those two options enabled:

https://paste.ubuntu.com/p/b89KnWhdqq/

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1799791

Revision history for this message
Ryan Harper (raharper) wrote :

The virtio configuration in this new kernel build changed, can it get reverted to what the -kvm kernel currently has?

% grep VIRTIO /boot/config-*kvm
CONFIG_BLK_MQ_VIRTIO=y
CONFIG_HW_RANDOM_VIRTIO=y
CONFIG_NET_9P_VIRTIO=y
# CONFIG_RPMSG_VIRTIO is not set
CONFIG_SCSI_VIRTIO=y
CONFIG_VIRTIO=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_BLK=y
# CONFIG_VIRTIO_BLK_SCSI is not set
CONFIG_VIRTIO_CONSOLE=y
# CONFIG_VIRTIO_INPUT is not set
CONFIG_VIRTIO_MMIO=y
CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
CONFIG_VIRTIO_NET=y
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_PCI_LEGACY=y

Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Sure, I'll take a look and build a new kernel.

Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

I posted another test kernel built using the linux-kvm tree, with no changes made.

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1799791

This is the output from the default config files in this repo:

https://paste.ubuntu.com/p/79TsTgpXWt/

Revision history for this message
Ryan Harper (raharper) wrote :

Could you re-apply the KEXEC config changes to the linux-kvm tree build?

Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

The CONFIG_KEXEC and CONFIG_KEXEC_FILE config options are already enabled for the linux-kvm repo. Here is a grep of the config directory:

https://paste.ubuntu.com/p/w84BrTZKVc/

This tree was cloned from:
lp:~canonical-kernel/ubuntu/+source/linux-kvm/+git/cosmic

Do you see these options enabled on your test environment after installing that kernel?

Changed in linux-kvm (Ubuntu Cosmic):
status: In Progress → Confirmed
Changed in linux-kvm (Ubuntu):
status: In Progress → Confirmed
assignee: Joseph Salisbury (jsalisbury) → nobody
Changed in linux-kvm (Ubuntu Cosmic):
assignee: Joseph Salisbury (jsalisbury) → nobody
Connor Kuehl (connork)
Changed in linux-kvm (Ubuntu):
assignee: nobody → Connor Kuehl (connork)
Changed in linux-kvm (Ubuntu Cosmic):
assignee: nobody → Connor Kuehl (connork)
Revision history for this message
Connor Kuehl (connork) wrote :

At first glance it looked like these options were enabled for linux-kvm because they showed up as being set to "yes" under the "debian.master/config/config.common.ubuntu" file. However, my grepping was too narrow because grepping for "CONFIG_KEXEC=" didn't show the following lines:

debian.kvm/config/config.common.ubuntu:# CONFIG_KEXEC is not set
debian.kvm/config/config.common.ubuntu:# CONFIG_KEXEC_FILE is not set

For derivative kernels like linux-kvm, if it's set in the debian.master but unset in debian.kvm, then it's unset for the package.

Sent a patch to the ML to enable it for linux-kvm: https://lists.ubuntu.com/archives/kernel-team/2019-April/100350.html

Changed in linux-kvm (Ubuntu Xenial):
status: New → In Progress
Changed in linux-kvm (Ubuntu Bionic):
status: New → In Progress
Changed in linux-kvm (Ubuntu Cosmic):
status: Confirmed → In Progress
Changed in linux-kvm (Ubuntu Disco):
status: New → In Progress
Connor Kuehl (connork)
Changed in linux-kvm (Ubuntu Xenial):
assignee: nobody → Connor Kuehl (connork)
Changed in linux-kvm (Ubuntu Bionic):
assignee: nobody → Connor Kuehl (connork)
Changed in linux-kvm (Ubuntu Disco):
assignee: nobody → Connor Kuehl (connork)
Revision history for this message
Kleber Sacilotto de Souza (kleber-souza) wrote :

We are applying these changes on linux-kvm only for Cosmic and Disco for now. If they don't cause any problems (e.g. boot speed increase) we will apply later also for the older series.

Changed in linux-kvm (Ubuntu Cosmic):
status: In Progress → Fix Committed
Changed in linux-kvm (Ubuntu Disco):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (24.3 KiB)

This bug was fixed in the package linux-kvm - 5.0.0-1007.7

---------------
linux-kvm (5.0.0-1007.7) disco; urgency=medium

  * linux-kvm: 5.0.0-1007.7 -proposed tracker (LP: #1829169)

  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - [Config]: remove CONFIG_R3964
    - [Config]: add CONFIG_LDISC_AUTOLOAD=y

  * linux-kvm: please support kexec (LP: #1799791)
    - [Config]: enable KEXEC and KEXEC_FILE

  [ Ubuntu: 5.0.0-16.17 ]

  * linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)
  * shiftfs: lock security sensitive superblock flags (LP: #1827122)
    - SAUCE: shiftfs: lock down certain superblock flags
  * Please package libbpf (which is done out of the kernel src) in Debian [for
    19.10] (LP: #1826410)
    - SAUCE: tools -- fix add ability to disable libbfd
  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - drm/i915/gvt: do not let pin count of shadow mm go negative
    - kbuild: pkg: use -f $(srctree)/Makefile to recurse to top Makefile
    - netfilter: nft_compat: use .release_ops and remove list of extension
    - netfilter: nf_tables: use-after-free in dynamic operations
    - netfilter: nf_tables: add missing ->release_ops() in error path of newrule()
    - hv_netvsc: Fix unwanted wakeup after tx_disable
    - ibmvnic: Fix completion structure initialization
    - ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
    - ipv6: Fix dangling pointer when ipv6 fragment
    - ipv6: sit: reset ip header pointer in ipip6_rcv
    - kcm: switch order of device registration to fix a crash
    - net: ethtool: not call vzalloc for zero sized memory request
    - net-gro: Fix GRO flush when receiving a GSO packet.
    - net/mlx5: Decrease default mr cache size
    - netns: provide pure entropy for net_hash_mix()
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().
    - net/sched: act_sample: fix divide by zero in the traffic path
    - net/sched: fix ->get helper of the matchall cls
    - qmi_wwan: add Olicard 600
    - r8169: disable ASPM again
    - sctp: initialize _pad of sockaddr_in before copying to user memory
    - tcp: Ensure DCTCP reacts to losses
    - tcp: fix a potential NULL pointer dereference in tcp_sk_exit
    - vrf: check accept_source_route on the original netdevice
    - net/mlx5e: Fix error handling when refreshing TIRs
    - net/mlx5e: Add a lock on tir list
    - nfp: validate the return code from dev_queue_xmit()
    - nfp: disable netpoll on representors
    - bnxt_en: Improve RX consumer index validity check.
    - bnxt_en: Reset device on RX buffer errors.
    - net: ip_gre: fix possible use-after-free in erspan_rcv
    - net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
    - net: bridge: always clear mcast matching struct on reports and leaves
    - net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
    - net: vrf: Fix ping failed when vrf mtu is set to 0
    - net: core: netif_receive_skb_list: unlist skb before passing to pt->func
    - r8169: disable default rx interrupt coalescing on RTL8168
    - net: mlx5: Add a missing check on idr_find, free buf
    - net/mlx5e: Update xoff formula
    - net/mlx5e: Update...

Changed in linux-kvm (Ubuntu Disco):
status: Fix Committed → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-kvm - 4.18.0-1013.13

---------------
linux-kvm (4.18.0-1013.13) cosmic; urgency=medium

  * linux-kvm: 4.18.0-1013.13 -proposed tracker (LP: #1829184)

  * linux-kvm: please support kexec (LP: #1799791)
    - [Config]: enable KEXEC and KEXEC_FILE

  [ Ubuntu: 4.18.0-21.22 ]

  * linux: 4.18.0-21.22 -proposed tracker (LP: #1829186)
  * disable a.out support (LP: #1818552)
    - [Config] Turn off a.out support
  * ftrace in ubuntu_kernel_selftests hang with Cosmic kernel (LP: #1826385)
    - kprobes/x86: Fix instruction patching corruption when copying more than one
      RIP-relative instruction
  * touchpad not working on lenovo yoga 530 (LP: #1787775)
    - Revert "UBUNTU: SAUCE: i2c:amd Depends on ACPI"
    - Revert "UBUNTU: SAUCE: i2c:amd move out pointer in union i2c_event_base"
    - Revert "UBUNTU: SAUCE: i2c:amd I2C Driver based on PCI Interface for
      upcoming platform"
    - i2c: add extra check to safe DMA buffer helper
    - i2c: Add drivers for the AMD PCIe MP2 I2C controller
    - [Config] Update config for AMD MP2 I2C driver
    - [Config] Update I2C_AMD_MP2 annotations
  * Geneve tunnels don't work when ipv6 is disabled (LP: #1794232)
    - geneve: correctly handle ipv6.disable module parameter
  * There are 4 HDMI/Displayport audio output listed in sound setting without
    attach any HDMI/DP monitor (LP: #1827967)
    - ALSA: hda/hdmi - Read the pin sense from register when repolling
    - ALSA: hda/hdmi - Consider eld_valid when reporting jack event
  * Headphone jack switch sense is inverted: plugging in headphones disables
    headphone output (LP: #1824259)
    - ASoC: rt5645: Headphone Jack sense inverts on the LattePanda board
  * CTAUTO:DevOps:860.50:devops4fp1:Error occurred during LINUX Dmesg error
    Checking for all LINUX clients for devops4p10 (LP: #1766201)
    - SAUCE: integrity: downgrade error to warning
  * potential memory corruption on arm64 on dev release (LP: #1827437)
    - driver core: Postpone DMA tear-down until after devres release
  * powerpc/pmu/ebb test in ubuntu_kernel_selftest failed with "error while
    loading shared libraries" on Bionic/Cosmic PowerPC (LP: #1812805)
    - selftests/powerpc/pmu: Link ebb tests with -no-pie
  * unnecessary request_queue freeze (LP: #1815733)
    - block: avoid setting nr_requests to current value
    - block: avoid setting none scheduler if it's already none
  * Kprobe event string type argument failed in ftrace from
    ubuntu_kernel_selftests on B/C i386 (LP: #1825780)
    - selftests/ftrace: Fix kprobe string testcase to not probe notrace function
  * False positive test result in run_netsocktests from net in
    ubuntu_kernel_selftest (LP: #1825777)
    - selftests/net: correct the return value for run_netsocktests

 -- Andrea Righi <email address hidden> Wed, 15 May 2019 17:10:11 +0200

Changed in linux-kvm (Ubuntu Cosmic):
status: Fix Committed → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (24.3 KiB)

This bug was fixed in the package linux-kvm - 5.0.0-1007.7

---------------
linux-kvm (5.0.0-1007.7) disco; urgency=medium

  * linux-kvm: 5.0.0-1007.7 -proposed tracker (LP: #1829169)

  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - [Config]: remove CONFIG_R3964
    - [Config]: add CONFIG_LDISC_AUTOLOAD=y

  * linux-kvm: please support kexec (LP: #1799791)
    - [Config]: enable KEXEC and KEXEC_FILE

  [ Ubuntu: 5.0.0-16.17 ]

  * linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)
  * shiftfs: lock security sensitive superblock flags (LP: #1827122)
    - SAUCE: shiftfs: lock down certain superblock flags
  * Please package libbpf (which is done out of the kernel src) in Debian [for
    19.10] (LP: #1826410)
    - SAUCE: tools -- fix add ability to disable libbfd
  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - drm/i915/gvt: do not let pin count of shadow mm go negative
    - kbuild: pkg: use -f $(srctree)/Makefile to recurse to top Makefile
    - netfilter: nft_compat: use .release_ops and remove list of extension
    - netfilter: nf_tables: use-after-free in dynamic operations
    - netfilter: nf_tables: add missing ->release_ops() in error path of newrule()
    - hv_netvsc: Fix unwanted wakeup after tx_disable
    - ibmvnic: Fix completion structure initialization
    - ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
    - ipv6: Fix dangling pointer when ipv6 fragment
    - ipv6: sit: reset ip header pointer in ipip6_rcv
    - kcm: switch order of device registration to fix a crash
    - net: ethtool: not call vzalloc for zero sized memory request
    - net-gro: Fix GRO flush when receiving a GSO packet.
    - net/mlx5: Decrease default mr cache size
    - netns: provide pure entropy for net_hash_mix()
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().
    - net/sched: act_sample: fix divide by zero in the traffic path
    - net/sched: fix ->get helper of the matchall cls
    - qmi_wwan: add Olicard 600
    - r8169: disable ASPM again
    - sctp: initialize _pad of sockaddr_in before copying to user memory
    - tcp: Ensure DCTCP reacts to losses
    - tcp: fix a potential NULL pointer dereference in tcp_sk_exit
    - vrf: check accept_source_route on the original netdevice
    - net/mlx5e: Fix error handling when refreshing TIRs
    - net/mlx5e: Add a lock on tir list
    - nfp: validate the return code from dev_queue_xmit()
    - nfp: disable netpoll on representors
    - bnxt_en: Improve RX consumer index validity check.
    - bnxt_en: Reset device on RX buffer errors.
    - net: ip_gre: fix possible use-after-free in erspan_rcv
    - net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
    - net: bridge: always clear mcast matching struct on reports and leaves
    - net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
    - net: vrf: Fix ping failed when vrf mtu is set to 0
    - net: core: netif_receive_skb_list: unlist skb before passing to pt->func
    - r8169: disable default rx interrupt coalescing on RTL8168
    - net: mlx5: Add a missing check on idr_find, free buf
    - net/mlx5e: Update xoff formula
    - net/mlx5e: Update...

Changed in linux-kvm (Ubuntu):
status: Confirmed → Fix Released
Stefan Bader (smb)
Changed in linux-kvm (Ubuntu Bionic):
status: In Progress → Fix Committed
Changed in linux-kvm (Ubuntu Xenial):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (172.0 KiB)

This bug was fixed in the package linux-kvm - 4.15.0-1042.42

---------------
linux-kvm (4.15.0-1042.42) bionic; urgency=medium

  * bionic/linux-kvm: 4.15.0-1042.42 -proposed tracker (LP: #1839276)

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

  [ Ubuntu: 4.15.0-58.64 ]

  * unable to handle kernel NULL pointer dereference at 000000000000002c (IP:
    iget5_locked+0x9e/0x1f0) (LP: #1838982)
    - Revert "ovl: set I_CREATING on inode being created"
    - Revert "new primitive: discard_new_inode()"

linux-kvm (4.15.0-1041.41) bionic; urgency=medium

  [ Ubuntu: 4.15.0-57.63 ]

  * CVE-2019-1125
    - x86/cpufeatures: Carve out CQM features retrieval
    - x86/cpufeatures: Combine word 11 and 12 into a new scattered features word
    - x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations
    - x86/speculation: Enable Spectre v1 swapgs mitigations
    - x86/entry/64: Use JMP instead of JMPQ
    - x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS
  * Packaging resync (LP: #1786013)
    - update dkms package versions

linux-kvm (4.15.0-1040.40) bionic; urgency=medium

  * bionic/linux-kvm: 4.15.0-1040.40 -proposed tracker (LP: #1837613)

  * Build Nvidia drivers in conjunction with kernel (LP: #1764792)
    - [Packaging] nvidia -- build and sign nvidia packages and ship signatures

  * zfs/spl build in conjunction with the kernel from DKMS source (LP: #1807378)
    - [Packaging] dkms -- add missing build dependencies

  * linux-kvm: please support kexec (LP: #1799791)
    - [Config]: enable KEXEC and KEXEC_FILE

  [ Ubuntu: 4.15.0-56.62 ]

  * bionic/linux: 4.15.0-56.62 -proposed tracker (LP: #1837626)
  * Packaging resync (LP: #1786013)
    - [Packaging] resync git-ubuntu-log
    - [Packaging] update helper scripts
  * CVE-2019-2101
    - media: uvcvideo: Fix 'type' check leading to overflow
  * hibmc-drm Causes Unreadable Display for Huawei amd64 Servers (LP: #1762940)
    - [Config] Set CONFIG_DRM_HISI_HIBMC to arm64 only
    - SAUCE: Make CONFIG_DRM_HISI_HIBMC depend on ARM64
  * Bionic: support for Solarflare X2542 network adapter (sfc driver)
    (LP: #1836635)
    - sfc: make mem_bar a function rather than a constant
    - sfc: support VI strides other than 8k
    - sfc: add Medford2 (SFC9250) PCI Device IDs
    - sfc: improve PTP error reporting
    - sfc: update EF10 register definitions
    - sfc: populate the timer reload field
    - sfc: update MCDI protocol headers
    - sfc: support variable number of MAC stats
    - sfc: expose FEC stats on Medford2
    - sfc: expose CTPIO stats on NICs that support them
    - sfc: basic MCDI mapping of 25/50/100G link speeds
    - sfc: support the ethtool ksettings API properly so that 25/50/100G works
    - sfc: add bits for 25/50/100G supported/advertised speeds
    - sfc: remove tx and MCDI handling from NAPI budget consideration
    - sfc: handle TX timestamps in the normal data path
    - sfc: add function to determine which TX timestamping method to use
    - sfc: use main datapath for HW timestamps if available
    - sfc: only enable TX timestamping if the adapter is licensed for it
    - sfc: MAC TX timestamp handling on t...

Changed in linux-kvm (Ubuntu Bionic):
status: Fix Committed → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (12.9 KiB)

This bug was fixed in the package linux-kvm - 4.4.0-1054.61

---------------
linux-kvm (4.4.0-1054.61) xenial; urgency=medium

  [ Ubuntu: 4.4.0-159.187 ]

  * CVE-2019-1125
    - x86/cpufeatures: Carve out CQM features retrieval
    - x86/cpufeatures: Combine word 11 and 12 into a new scattered features word
    - x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations
    - x86/speculation: Enable Spectre v1 swapgs mitigations
    - x86/entry/64: Use JMP instead of JMPQ
    - x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS

linux-kvm (4.4.0-1053.60) xenial; urgency=medium

  * xenial/linux-kvm: 4.4.0-1053.60 -proposed tracker (LP: #1837591)

  * CVE-2018-5383
    - kvm: [Config]: CRYPTO_ECDH=m

  * linux-kvm: please support kexec (LP: #1799791)
    - [Config]: enable KEXEC and KEXEC_FILE

  [ Ubuntu: 4.4.0-158.186 ]

  * xenial/linux: 4.4.0-158.186 -proposed tracker (LP: #1837609)
  * Packaging resync (LP: #1786013)
    - [Packaging] resync git-ubuntu-log
    - [Packaging] update helper scripts
  * ixgbe{vf} - Physical Function gets IRQ when VF checks link state
    (LP: #1836760)
    - ixgbevf: Use cached link state instead of re-reading the value for ethtool
  * CVE-2018-5383
    - crypto: kpp - Key-agreement Protocol Primitives API (KPP)
    - crypto: dh - Add DH software implementation
    - crypto: ecdh - Add ECDH software support
    - crypto: ecdh - make ecdh_shared_secret unique
    - crypto: doc - add KPP documentation
    - crypto: kpp, (ec)dh - fix typos
    - crypto: ecc - remove unused function arguments
    - crypto: ecc - remove unnecessary casts
    - crypto: ecc - rename ecdh_make_pub_key()
    - crypto: ecdh - add privkey generation support
    - crypto: ecc - Fix NULL pointer deref. on no default_rng
    - [Config] CRYPTO_ECDH=m
    - Bluetooth: convert smp and selftest to crypto kpp API
    - crypto: ecdh - add public key verification test
  * Xenial update: 4.4.185 upstream stable release (LP: #1836668)
    - fs/binfmt_flat.c: make load_flat_shared_library() work
    - scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
    - tracing: Silence GCC 9 array bounds warning
    - gcc-9: silence 'address-of-packed-member' warning
    - usb: chipidea: udc: workaround for endpoint conflict issue
    - Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
    - apparmor: enforce nullbyte at end of tag string
    - parport: Fix mem leak in parport_register_dev_model
    - parisc: Fix compiler warnings in float emulation code
    - IB/hfi1: Insure freeze_work work_struct is canceled on shutdown
    - MIPS: uprobes: remove set but not used variable 'epc'
    - net: hns: Fix loopback test failed at copper ports
    - sparc: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
    - scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
    - scsi: ufs: Check that space was properly alloced in copy_query_response
    - s390/qeth: fix VLAN attribute in bridge_hostnotify udev event
    - hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
    - Btrfs: fix race between readahead and device replace/removal
    - btrfs: start readahead also in...

Changed in linux-kvm (Ubuntu Xenial):
status: Fix Committed → Fix Released
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