Ubuntu
linux package

TRACE_syscall.ptrace_syscall_dropped in seccomp from ubuntu_kernel_selftests failed on B/C PowerPC

Bug #1812796 reported by Po-Hsu Lin on 2019-01-22

This bug affects 1 person

	Status	Importance	Assigned to
ubuntu-kernel-tests	Fix Released	Undecided	Po-Hsu Lin
linux (Ubuntu)	Fix Released	Undecided	Unassigned
Bionic	Fix Released	Undecided	Po-Hsu Lin
Cosmic	Won't Fix	Undecided	Po-Hsu Lin

Bug Description

== SRU Justification ==
The TRACE_syscall.ptrace_syscall_dropped test in seccomp from ubuntu_kernel_selftests will fail on a Power8 node with B/C kernel.

[ RUN ] TRACE_syscall.ptrace_syscall_dropped
seccomp_bpf.c:1808:TRACE_syscall.ptrace_syscall_dropped:Expected 1 (1) == syscall(286) (18446744073709551615)
TRACE_syscall.ptrace_syscall_dropped: Test failed at step #13
[ FAIL ] TRACE_syscall.ptrace_syscall_dropped

== Fix ==
* ed5f1326 (selftests/seccomp: Enhance per-arch ptrace syscall skip tests)

This patch can be cherry-picked into B/C, and it's already in Disco.
The ptrace_syscall_dropped will be changed into ptrace_syscall_faked, and a new ptrace_syscall_errno test will be added.

== Test ==
Patch tested with different arch (amd64 / power8 / arm64 / i386), the new test will pass on them except for PowerPC.

Although the faked (bug 1829363) and errno (bug 1829359) test will fail on PowerPC, it's actually helping us to nail down a real issue in our kernel.

== Regression Potential ==
Low, changes limited to the testing tool in the kernel.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-43-generic 4.15.0-43.46
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic ppc64le
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jan 22 04:30 seq
crw-rw---- 1 root audio 116, 33 Jan 22 04:30 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: ppc64el
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Tue Jan 22 06:09:34 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
PciMultimedia:

ProcFB:

ProcKernelCmdLine: root=/dev/mapper/mpath0-part2 ro console=hvc0
ProcLoadAvg: 0.13 0.34 0.23 1/1487 35882
ProcSwaps:
Filename Type Size Used Priority
/swap.img file 8388544 0 -2
ProcVersion: Linux version 4.15.0-43-generic (buildd@bos02-ppc64el-020) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #46-Ubuntu SMP Thu Dec 6 14:43:28 UTC 2018
RelatedPackageVersions:
linux-restricted-modules-4.15.0-43-generic N/A
linux-backports-modules-4.15.0-43-generic N/A
linux-firmware 1.173.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDump_list: total 0
cpu_cores: Number of cores present = 20
cpu_coreson: Number of cores online = 20
cpu_dscr: DSCR is 0
cpu_freq:
min: 3.694 GHz (cpu 152)
max: 3.694 GHz (cpu 1)
avg: 3.694 GHz
cpu_runmode:
Could not retrieve current diagnostics mode,
No kernel interface to firmware
cpu_smt: SMT=8

See original description

Tags:

CVE References

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2019-01-22:

log Edit (5.5 KiB, text/plain)
.sys.firmware.opal.msglog.txt Edit (160.3 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (454 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (3.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.8 KiB, text/plain; charset="utf-8")
DeviceTree.tar.gz Edit (122.7 KiB, application/x-gzip)
Lspci.txt Edit (88.0 KiB, text/plain; charset="utf-8")
OpalElog.tar.gz Edit (30.2 KiB, application/x-gzip)
ProcCpuinfo.txt Edit (17.5 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (225 bytes, text/plain; charset="utf-8")
ProcEnviron.txt Edit (248 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (165.0 KiB, text/plain; charset="utf-8")
ProcLocks.txt Edit (286 bytes, text/plain; charset="utf-8")
ProcMisc.txt Edit (283 bytes, text/plain; charset="utf-8")
ProcModules.txt Edit (3.3 KiB, text/plain; charset="utf-8")
ProcPpc64.tar.gz Edit (499 bytes, application/x-gzip)
UdevDb.txt Edit (325.5 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (262.9 KiB, text/plain; charset="utf-8")
nvram.gz Edit (4.8 KiB, application/x-gzip)

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2019-01-22: Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Po-Hsu Lin (cypressyew) on 2019-01-23

tags:

added: cosmic

Revision history for this message

Dan Streetman (ddstreet) wrote on 2019-02-01: Re: TRACE_syscall.ptrace_syscall_dropped in seccomp from ubuntu_kernel_selftests failed on B Power8

I see this failure in cosmic as well:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-cosmic/cosmic/ppc64el/l/linux/20190201_014942_1b783@/log.gz

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2019-04-25:

https://github.com/torvalds/linux/commit/ed5f13261cb65b02c611ae9971677f33581d4286

Po-Hsu Lin (cypressyew) on 2019-04-25

Changed in linux (Ubuntu):
status:	Confirmed → Fix Released

Po-Hsu Lin (cypressyew) on 2019-05-15

Changed in ubuntu-kernel-tests:
status:	New → In Progress
assignee:	nobody → Po-Hsu Lin (cypressyew)
Changed in linux (Ubuntu Bionic):
assignee:	nobody → Po-Hsu Lin (cypressyew)
Changed in linux (Ubuntu Cosmic):
assignee:	nobody → Po-Hsu Lin (cypressyew)
Changed in linux (Ubuntu Bionic):
status:	New → In Progress
Changed in linux (Ubuntu Cosmic):
status:	New → In Progress

Po-Hsu Lin (cypressyew) on 2019-05-16

summary:

TRACE_syscall.ptrace_syscall_dropped in seccomp from
- ubuntu_kernel_selftests failed on B Power8
+ ubuntu_kernel_selftests failed on B/C Power8

Po-Hsu Lin (cypressyew) on 2019-05-16

description:

updated

Po-Hsu Lin (cypressyew) on 2019-05-16

summary:	TRACE_syscall.ptrace_syscall_dropped in seccomp from - ubuntu_kernel_selftests failed on B/C Power8 + ubuntu_kernel_selftests failed on B/C PowerPC
description:	updated

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2019-05-16:

https://lists.ubuntu.com/archives/kernel-team/2019-May/100758.html

Kleber Sacilotto de Souza (kleber-souza) on 2019-06-04

Changed in linux (Ubuntu Cosmic):
status:	In Progress → Fix Committed
Changed in linux (Ubuntu Bionic):
status:	In Progress → Fix Committed

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2019-06-18:

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag 'verification-needed-cosmic' to 'verification-failed-cosmic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: verification-needed-cosmic

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2019-06-18:

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: verification-needed-bionic

Po-Hsu Lin (cypressyew) on 2019-07-11

tags:

added: verification-done-bionic
removed: verification-needed-bionic

Po-Hsu Lin (cypressyew) on 2019-07-12

tags:

added: verification-done-cosmic
removed: verification-needed-cosmic

Po-Hsu Lin (cypressyew) on 2019-07-12

Changed in ubuntu-kernel-tests:
status:	In Progress → Fix Released

Revision history for this message

Launchpad Janitor (janitor) wrote on 2019-07-22:

Download full text (11.2 KiB)

This bug was fixed in the package linux - 4.15.0-55.60

---------------
linux (4.15.0-55.60) bionic; urgency=medium

* linux: 4.15.0-55.60 -proposed tracker (LP: #1834954)

  * Request backport of ceph commits into bionic (LP: #1834235)
    - ceph: use atomic_t for ceph_inode_info::i_shared_gen
    - ceph: define argument structure for handle_cap_grant
    - ceph: flush pending works before shutdown super
    - ceph: send cap releases more aggressively
    - ceph: single workqueue for inode related works
    - ceph: avoid dereferencing invalid pointer during cached readdir
    - ceph: quota: add initial infrastructure to support cephfs quotas
    - ceph: quota: support for ceph.quota.max_files
    - ceph: quota: don't allow cross-quota renames
    - ceph: fix root quota realm check
    - ceph: quota: support for ceph.quota.max_bytes
    - ceph: quota: update MDS when max_bytes is approaching
    - ceph: quota: add counter for snaprealms with quota
    - ceph: avoid iput_final() while holding mutex or in dispatch thread

* QCA9377 isn't being recognized sometimes (LP: #1757218)
- SAUCE: USB: Disable USB2 LPM at shutdown

  * hns: fix ICMP6 neighbor solicitation messages discard problem (LP: #1833140)
    - net: hns: fix ICMP6 neighbor solicitation messages discard problem
    - net: hns: fix unsigned comparison to less than zero

* Fix occasional boot time crash in hns driver (LP: #1833138)
- net: hns: Fix probabilistic memory overwrite when HNS driver initialized

* use-after-free in hns_nic_net_xmit_hw (LP: #1833136)
- net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw()

  * hns: attempt to restart autoneg when disabled should report error
    (LP: #1833147)
    - net: hns: Restart autoneg need return failed when autoneg off

  * systemd 237-3ubuntu10.14 ADT test failure on Bionic ppc64el (test-seccomp)
    (LP: #1821625)
    - powerpc: sys_pkey_alloc() and sys_pkey_free() system calls
    - powerpc: sys_pkey_mprotect() system call

  * [UBUNTU] pkey: Indicate old mkvp only if old and curr. mkvp are different
    (LP: #1832625)
    - pkey: Indicate old mkvp only if old and current mkvp are different

  * [UBUNTU] kernel: Fix gcm-aes-s390 wrong scatter-gather list processing
    (LP: #1832623)
    - s390/crypto: fix gcm-aes-s390 selftest failures

  * System crashes on hot adding a core with drmgr command (4.15.0-48-generic)
    (LP: #1833716)
    - powerpc/numa: improve control of topology updates
    - powerpc/numa: document topology_updates_enabled, disable by default

  * Kernel modules generated incorrectly when system is localized to a non-
    English language (LP: #1828084)
    - scripts: override locale from environment when running recordmcount.pl

  * [UBUNTU] kernel: Fix wrong dispatching for control domain CPRBs
    (LP: #1832624)
    - s390/zcrypt: Fix wrong dispatching for control domain CPRBs

  * CVE-2019-11815
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().

  * Sound device not detected after resume from hibernate (LP: #1826868)
    - drm/i915: Force 2*96 MHz cdclk on glk/cnl when audio power is enabled
    - drm/i915: Save the old CDCLK atomic state
...

This bug was fixed in the package linux - 4.15.0-55.60

---------------
linux (4.15.0-55.60) bionic; urgency=medium

* linux: 4.15.0-55.60 -proposed tracker (LP: #1834954)

* QCA9377 isn't being recognized sometimes (LP: #1757218)
    - SAUCE: USB: Disable USB2 LPM at shutdown

* Fix occasional boot time crash in hns driver (LP: #1833138)
    - net: hns: Fix probabilistic memory overwrite when HNS driver initialized

*  use-after-free in hns_nic_net_xmit_hw (LP: #1833136)
    - net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw()

* hns: attempt to restart autoneg when disabled should report error
    (LP: #1833147)
    - net: hns: Restart autoneg need return failed when autoneg off

* [UBUNTU] pkey: Indicate old mkvp only if old and curr. mkvp are different
    (LP: #1832625)
    - pkey: Indicate old mkvp only if old and current mkvp are different

* [UBUNTU] kernel: Fix gcm-aes-s390 wrong scatter-gather list processing
    (LP: #1832623)
    - s390/crypto: fix gcm-aes-s390 selftest failures

* Kernel modules generated incorrectly when system is localized to a non-
    English language (LP: #1828084)
    - scripts: override locale from environment when running recordmcount.pl

* [UBUNTU] kernel: Fix wrong dispatching for control domain CPRBs
    (LP: #1832624)
    - s390/zcrypt: Fix wrong dispatching for control domain CPRBs

* CVE-2019-11815
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().

* Sound device not detected after resume from hibernate (LP: #1826868)
    - drm/i915: Force 2*96 MHz cdclk on glk/cnl when audio power is enabled
    - drm/i915: Save the old CDCLK atomic state
    - drm/i915: Remove redundant store of logical CDCLK state
    - drm/i915: Skip modeset for cdclk changes if possible

* Handle overflow in proc_get_long of sysctl (LP: #1833935)
    - sysctl: handle overflow in proc_get_long

* Dell XPS 13 (9370) defaults to s2idle sleep/suspend instead of deep, NVMe
    drains lots of power under s2idle (LP: #1808957)
    - Revert "UBUNTU: SAUCE: pci/nvme: prevent WDC PC SN720 NVMe from entering D3
      and being disabled"
    - Revert "UBUNTU: SAUCE: nvme: add quirk to not call disable function when
      suspending"
    - Revert "UBUNTU: SAUCE: pci: prevent Intel NVMe SSDPEKKF from entering D3"
    - Revert "SAUCE: nvme: add quirk to not call disable function when suspending"
    - Revert "SAUCE: pci: prevent sk hynix nvme from entering D3"
    - PCI: PM: Avoid possible suspend-to-idle issue
    - PCI: PM: Skip devices in D0 for suspend-to-idle
    - nvme-pci: Sync queues on reset
    - nvme: Export get and set features
    - nvme-pci: Use host managed power state for suspend

* linux v4.15 ftbfs on a newer host kernel (e.g. hwe) (LP: #1823429)
    - selinux: use kernel linux/socket.h for genheaders and mdp

* 32-bit x86 kernel 4.15.0-50 crash in vmalloc_sync_all (LP: #1830433)
    - x86/mm/pat: Disable preemption around __flush_tlb_all()
    - x86/mm: Drop usage of __flush_tlb_all() in kernel_physical_mapping_init()
    - x86/mm: Disable ioremap free page handling on x86-PAE
    - ioremap: Update pgtable free interfaces with addr
    - x86/mm: Add TLB purge to free pmd/pte page interfaces
    - x86/init: fix build with CONFIG_SWAP=n
    - x86/mm: provide pmdp_establish() helper
    - x86/mm: Use WRITE_ONCE() when setting PTEs

* hinic: fix oops due to race in set_rx_mode (LP: #1832048)
    - hinic: fix a bug in set rx mode

* ubuntu 18.04 flickering screen with Radeon X1600 (LP: #1791312)
    - drm/radeon: prefer lower reference dividers

* Login screen never appears on vmwgfx using bionic kernel 4.15 (LP: #1832138)
    - drm/vmwgfx: use monotonic event timestamps

* [linux-azure] Block Layer Commits Requested in Azure Kernels (LP: #1834499)
    - block: Clear kernel memory before copying to user
    - block/bio: Do not zero user pages

* CONFIG_LOG_BUF_SHIFT set to 14 is too low on arm64 (LP: #1824864)
    - [Config] CONFIG_LOG_BUF_SHIFT=18 on all 64bit arches

* Handle overflow for file-max (LP: #1834310)
    - sysctl: handle overflow for file-max
    - kernel/sysctl.c: fix out-of-bounds access when setting file-max

* [ALSA] [PATCH] Headset fixup for System76 Gazelle (gaze14) (LP: #1827555)
    - ALSA: hda/realtek - Headset fixup for System76 Gazelle (gaze14)
    - ALSA: hda/realtek - Corrected fixup for System76 Gazelle (gaze14)

* crashdump fails on HiSilicon D06 (LP: #1828868)
    - iommu/arm-smmu-v3: Abort all transactions if SMMU is enabled in kdump kernel
    - iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel

* CVE-2019-11833
    - ext4: zero out the unused memory region in the extent tree block

* zfs 0.7.9 fixes a bug (https://github.com/zfsonlinux/zfs/pull/7343) that
    hangs the system completely (LP: #1772412)
    - SAUCE: (noup) Update zfs to 0.7.5-1ubuntu16.6

* does not detect headphone when there is no other output devices
    (LP: #1831065)
    - ALSA: hda/realtek - Fixed hp_pin no value
    - ALSA: hda/realtek - Use a common helper for hp pin reference

* kernel crash : net_sched  race condition in tcindex_destroy() (LP: #1825942)
    - net_sched: fix NULL pointer dereference when delete tcindex filter
    - RCU, workqueue: Implement rcu_work
    - net_sched: switch to rcu_work
    - net_sched: fix a race condition in tcindex_destroy()
    - net_sched: fix a memory leak in cls_tcindex
    - net_sched: initialize net pointer inside tcf_exts_init()
    - net_sched: fix two more memory leaks in cls_tcindex

* Support new ums-realtek device (LP: #1831840)
    - USB: usb-storage: Add new ID to ums-realtek

* amd_iommu possible data corruption (LP: #1823037)
    - iommu/amd: Reserve exclusion range in iova-domain
    - iommu/amd: Set exclusion range correctly

* Add new sound card PCIID into the alsa driver (LP: #1832299)
    - ALSA: hda: Add Icelake PCI ID
    - ALSA: hda/intel: add CometLake PCI IDs

* sky2 ethernet card doesn't work after returning from suspend
    (LP: #1807259) // sky2 ethernet card link not up after suspend
    (LP: #1809843)
    - sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79

* idle-page oopses when accessing page frames that are out of range
    (LP: #1833410)
    - mm/page_idle.c: fix oops because end_pfn is larger than max_pfn

* Add pointstick support on HP ZBook 17 G5 (LP: #1833387)
    - Revert "HID: multitouch: Support ALPS PTP stick with pid 0x120A"
    - SAUCE: HID: multitouch: Add pointstick support for ALPS Touchpad

* [SRU][B/B-OEM/B-OEM-OSP-1/C/D/E] Add trackpoint middle button support of 2
    new thinpads (LP: #1833637)
    - Input: elantech - enable middle button support on 2 ThinkPads

* CVE-2019-11085
    - drm/i915/gvt: Fix mmap range check
    - drm/i915: make mappable struct resource centric
    - drm/i915/gvt: Fix aperture read/write emulation when enable x-no-mmap=on

* CVE-2019-11884
    - Bluetooth: hidp: fix buffer overflow

* af_alg06 test from crypto test suite in LTP failed with kernel oops on B/C
    (LP: #1829725)
    - crypto: authenc - fix parsing key with misaligned rta_len

* CVE-2018-12126 // CVE-2018-12127 // CVE-2018-12130 // CVE-2019-11091
    - SAUCE: Synchronize MDS mitigations with upstream
    - Documentation: Correct the possible MDS sysfs values
    - x86/speculation/mds: Fix documentation typo

* CVE-2019-11091
    - x86/mds: Add MDSUM variant to the MDS documentation

* alignment test in powerpc from ubuntu_kernel_selftests failed on B/C Power9
    (LP: #1813118)
    - selftests/powerpc: Remove Power9 copy_unaligned test

* TRACE_syscall.ptrace_syscall_dropped in seccomp from ubuntu_kernel_selftests
    failed on B/C PowerPC (LP: #1812796)
    - selftests/seccomp: Enhance per-arch ptrace syscall skip tests

* Add powerpc/alignment_handler test for selftests (LP: #1828935)
    - selftests/powerpc: Add alignment handler selftest
    - selftests/powerpc: Fix to use ucontext_t instead of struct ucontext

* Cannot build kernel 4.15.0-48.51 due to an in-source-tree ZFS module.
    (LP: #1828763)
    - SAUCE: (noup) Update zfs to 0.7.5-1ubuntu16.5

* Eletrical noise occurred when external headset enter powersaving mode on a
    DEll machine (LP: #1828798)
    - ALSA: hda/realtek - Reduce click noise on Dell Precision 5820 headphone
    - ALSA: hda/realtek - Fixup headphone noise via runtime suspend

* [18.04/18.10] File libperf-jvmti.so is missing in linux-tools-common deb on
    Ubuntu (LP: #1761379)
    - [Packaging] Support building libperf-jvmti.so

* TCP : race condition on socket ownership in tcp_close() (LP: #1830813)
    - tcp: do not release socket ownership in tcp_close()

* bionic: netlink: potential shift overflow in netlink_bind() (LP: #1831103)
    - netlink: Don't shift on 64 for ngroups

* Add support to Comet Lake LPSS (LP: #1830175)
    - mfd: intel-lpss: Add Intel Comet Lake PCI IDs

* Reduce NAPI weight in hns driver from 256 to 64 (LP: #1830587)
    - net: hns: Use NAPI_POLL_WEIGHT for hns driver

* x86: add support for AMD Rome (LP: #1819485)
    - x86: irq_remapping: Move irq remapping mode enum
    - iommu/amd: Add support for higher 64-bit IOMMU Control Register
    - iommu/amd: Add support for IOMMU XT mode
    - hwmon/k10temp, x86/amd_nb: Consolidate shared device IDs
    - hwmon/k10temp: Add support for AMD family 17h, model 30h CPUs
    - x86/amd_nb: Add PCI device IDs for family 17h, model 30h
    - x86/MCE/AMD: Fix the thresholding machinery initialization order
    - x86/amd_nb: Add support for newer PCI topologies

* nx842 - CRB request time out (-110) when uninstall NX modules and initiate
    NX request (LP: #1827755)
    - crypto/nx: Initialize 842 high and normal RxFIFO control registers

* Require improved hypervisor detection patch in Ubuntu 18.04 (LP: #1829972)
    - s390/early: improve machine detection

-- Kleber Sacilotto de Souza <kleber.souza@canonical.com>  Tue, 02 Jul 2019 18:41:49 +0200

Changed in linux (Ubuntu Bionic):
status:	Fix Committed → Fix Released

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2019-08-22:

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: verification-needed-xenial

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2019-08-23:

#10

Hmm, how come this was marked as verification-needed-xenia?

Po-Hsu Lin (cypressyew) on 2021-03-12

Changed in linux (Ubuntu Cosmic):
status:	Fix Committed → Won't Fix

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TRACE_syscall.ptrace_syscall_dropped in seccomp from ubuntu_kernel_selftests failed on B/C PowerPC

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