This bug was fixed in the package linux - 4.13.0-39.44
---------------
linux (4.13.0-39.44) artful; urgency=medium
* linux: 4.13.0-39.44 -proposed tracker (LP: #1761456)
* intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2
Intel) // CVE-2017-5754
- x86/mm: Reinitialize TLB state on hotplug and resume
* intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2 Intel)
- Revert "x86/mm: Only set IBPB when the new thread cannot ptrace current
thread"
- x86/speculation: Use Indirect Branch Prediction Barrier in context switch
* DKMS driver builds fail with: Cannot use CONFIG_STACK_VALIDATION=y, please
install libelf-dev, libelf-devel or elfutils-libelf-devel (LP: #1760876)
- [Packaging] include the retpoline extractor in the headers
* retpoline hints: primary infrastructure and initial hints (LP: #1758856)
- [Packaging] retpoline-extract: flag *0xNNN(%reg) branches
- x86/speculation, objtool: Annotate indirect calls/jumps for objtool
- x86/speculation, objtool: Annotate indirect calls/jumps for objtool on
32bit
- x86/paravirt, objtool: Annotate indirect calls
- [Packaging] retpoline -- add safe usage hint support
- [Packaging] retpoline-check -- only report additions
- [Packaging] retpoline -- widen indirect call/jmp detection
- [Packaging] retpoline -- elide %rip relative indirections
- [Packaging] retpoline -- clear hint information from packages
- KVM: x86: Make indirect calls in emulator speculation safe
- KVM: VMX: Make indirect call speculation safe
- x86/boot, objtool: Annotate indirect jump in secondary_startup_64()
- SAUCE: early/late -- annotate indirect calls in early/late initialisation
code
- SAUCE: vga_set_mode -- avoid jump tables
- [Config] retpoline -- switch to new format
- [Packaging] retpoline hints -- handle missing files when RETPOLINE not
enabled
- [Packaging] final-checks -- remove check for empty retpoline files
* retpoline: ignore %cs:0xNNN constant indirections (LP: #1752655)
- [Packaging] retpoline -- elide %cs:0xNNNN constants on i386
* zfs system process hung on container stop/delete (LP: #1754584)
- SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)
* zfs-linux 0.6.5.11-1ubuntu5 ADT test failure with linux 4.15.0-1.2
(LP: #1737761)
- SAUCE: (noup) Update zfs to 0.6.5.11-1ubuntu3.2
* AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
(LP: #1759312)
- powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features
* btrfs and tar sparse truncate archives (LP: #1757565)
- Btrfs: move definition of the function btrfs_find_new_delalloc_bytes
- Btrfs: fix reported number of inode blocks after buffered append writes
* efifb broken on ThunderX-based Gigabyte nodes (LP: #1758375)
- drivers/fbdev/efifb: Allow BAR to be moved instead of claiming it
* Intel i40e PF reset due to incorrect MDD detection (continues...)
(LP: #1723127)
- i40e/i40evf: Account for frags split over multiple descriptors in check
linearize
* Fix an issue that when system in S3, USB keyboard can't wake up the system.
(LP: #1759511)
- ACPI / PM: Allow deeper wakeup power states with no _SxD nor _SxW
* [8086:3e92] display becomes blank after S3 (LP: #1759188)
- drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
* add audio kernel patches for Raven (LP: #1758364)
- ALSA: hda: Add Raven PCI ID
- ALSA: hda/realtek - Fix ALC700 family no sound issue
* Cpu utilization showing system time for kvm guests (performance) (sysstat)
(LP: #1755979)
- KVM: PPC: Book3S HV: Fix guest time accounting with
VIRT_CPU_ACCOUNTING_GEN
* Kernel panic on a nfsroot system (LP: #1734327)
- Revert "UBUNTU: SAUCE: LSM stacking: add stacking support to apparmor
network hooks"
- Revert "UBUNTU: SAUCE: LSM stacking: LSM: Infrastructure management of the
remaining blobs"
* can't record sound via front headset port on the Dell Precision 3630
(LP: #1759088)
- ALSA: hda/realtek - Fix Dell headset Mic can't record
* speaker can't output sound anymore after system resumes from S3 on a lenovo
machine with alc257 (LP: #1758829)
- ALSA: hda/realtek - Fix speaker no sound after system resume
* hda driver initialization takes too much time on the machine with coffeelake
audio controller [8086:a348] (LP: #1758800)
- ALSA: hda - Force polling mode on CFL for fixing codec communication
* Let headset-mode initialization be called on Dell Precision 3930
(LP: #1757584)
- ALSA: hda/realtek - Add headset mode support for Dell laptop
* ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64
(LP: #1755073)
- SAUCE: crypto: thunderx_zip: Fix fallout from CONFIG_VMAP_STACK
* [Hyper-V] include kvp fix for Avoid reading past allocated blocks from KVP
file (LP: #1750349)
- hv: kvp: Avoid reading past allocated blocks from KVP file
* IMA policy parsing is broken in 4.13 (LP: #1755804)
- ima/policy: fix parsing of fsuuid
* external mic not work on Dell OptiPlex 7460 AIO (LP: #1755954)
- ALSA: hda/realtek - Add headset mode support for Dell laptop
* sbsa watchdog crashes thunderx2 system (LP: #1755595)
- watchdog: sbsa: use 32-bit read for WCV
* CVE-2018-8043
- net: phy: mdio-bcm-unimac: fix potential NULL dereference in
unimac_mdio_probe()
-- Stefan Bader <stefan.ba...@canonical.com> Thu, 05 Apr 2018 14:47:00
+0200
** Changed in: linux (Ubuntu Artful)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5754
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8043
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https://bugs.launchpad.net/bugs/1759312
Title:
AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu
17.10
Status in The Ubuntu-power-systems project:
Fix Committed
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
Fix Released
Status in linux source package in Bionic:
Fix Released
Bug description:
== SRU Justification ==
AT_BASE_PLATFORM in AIXV is not exported to userspace on P9 baremetal
machines
causing trouble to userspace tools and software that rely on that
information,
notably operf and opreport (from oprofile 1.2.0+) will refuse to run without
that information.
This bug is fixed by commit e4b79900222b, which is in linux-next and just
landed in mainline, but is not contained in any release as of yet.
== Fix ==
e4b79900222b ("powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU
features")
== Regression Potential ==
Low. Limited to powerpc.
== Test Case ==
A test kernel was built with this patch and tested by the original bug
reporter.
The bug reporter states the test kernel resolved the bug.
---Problem Description---
AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
---Additional Hardware Info---
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 176
On-line CPU(s) list: 0-175
Thread(s) per core: 4
Core(s) per socket: 22
Socket(s): 2
NUMA node(s): 8
Model: 2.2 (pvr 004e 1202)
Model name: POWER9, altivec supported
CPU max MHz: 2800.0000
CPU min MHz: 2300.0000
L1d cache: 32K
L1i cache: 32K
L2 cache: 512K
L3 cache: 10240K
NUMA node0 CPU(s): 0-87
NUMA node8 CPU(s): 88-175
NUMA node250 CPU(s):
NUMA node251 CPU(s):
NUMA node252 CPU(s):
NUMA node253 CPU(s):
NUMA node254 CPU(s):
NUMA node255 CPU(s):
Machine Type = P9, DD2.2, Witherspoon, baremetal
---Steps to Reproduce---
AT_BASE_PLATFORM in AIXV is not exported to userspace on P9 baremetal
machines causing trouble to userspace tools and software that relie on that
information, notably operf and opreport (from oprofile 1.2.0+) will refuse to
run without that information show a error message like:
gromero@ltc-wspoon3:/boot$ operf
NULL returned for one or both of AT_PLATFORM/AT_BASE_PLATFORM
AT_PLATFORM: power9; AT_BASE_PLATFORM: (null)
Unable to obtain cpu_type
Verify that a pre-1.0 version of OProfile is not in use.
If the /dev/oprofile/cpu_type file exists, locate the pre-1.0 OProfile
installation, and use its 'opcontrol' command, passing the --deinit option.
Unable to ascertain cpu type. Exiting.
---uname output---
linux-image-4.13.0-36-generic 4.13.0-36.40
Userspace tool common name: operf, opreport
Dear maintainer. please consider applying the following fix that's
already available upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=e4b79900222b8cccd4da4a7a89581f
Thank you.
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