[SOLVED] Kernel 4.15.0.38

Questions about other topics - please check if your question fits better in another category before posting here
Forum rules
Before you post please read how to get help
Post Reply
nakednorman
Level 1
Level 1
Posts: 31
Joined: Mon Jan 02, 2017 9:05 am

[SOLVED] Kernel 4.15.0.38

Post by nakednorman » Fri Oct 26, 2018 8:13 am

I have been running on -38 for 3 days without problems but In another post, Pjotr said:
"Note that the -39 came very rapidly after the -38: oops, major bug fix! "
Update Manager hasn't offered me -39 yet, so -
How bad is -38?
Do I need to revert to -36?
Thanks for any advice,
NN
Last edited by nakednorman on Fri Oct 26, 2018 9:34 am, edited 1 time in total.

User avatar
Moem
Level 17
Level 17
Posts: 7229
Joined: Tue Nov 17, 2015 9:14 am
Location: The Netherlands
Contact:

Re: Kernel 4.15.0.38

Post by Moem » Fri Oct 26, 2018 8:19 am

How well a kernel works for you is highly dependent on hardware. If it's working fine for you, there is no need to borrow trouble.
Image

If your issue is solved, kindly indicate that by editing the first post in the topic, and adding [SOLVED] to the title. Thanks!

nakednorman
Level 1
Level 1
Posts: 31
Joined: Mon Jan 02, 2017 9:05 am

Re: Kernel 4.15.0.38

Post by nakednorman » Fri Oct 26, 2018 8:25 am

I was concerned it may be a security problem?
NN

User avatar
Moem
Level 17
Level 17
Posts: 7229
Joined: Tue Nov 17, 2015 9:14 am
Location: The Netherlands
Contact:

Re: Kernel 4.15.0.38

Post by Moem » Fri Oct 26, 2018 8:34 am

If it were, I'm pretty sure we would all have been offered .39 right quick. And I haven't, either. I've also not heard of any current kernel-related threats.
Image

If your issue is solved, kindly indicate that by editing the first post in the topic, and adding [SOLVED] to the title. Thanks!

gm10
Level 13
Level 13
Posts: 4659
Joined: Thu Jun 21, 2018 5:11 pm

Re: Kernel 4.15.0.38

Post by gm10 » Fri Oct 26, 2018 9:03 am

nakednorman wrote:
Fri Oct 26, 2018 8:13 am
I have been running on -38 for 3 days without problems but In another post, Pjotr said:
"Note that the -39 came very rapidly after the -38: oops, major bug fix! "
Update Manager hasn't offered me -39 yet, so -
How bad is -38?
Do I need to revert to -36?
Thanks for any advice,
NN
I'm not sure why he made that comment, I think he tried to be funny. There's nothing particularly critical in -38, it's fine to install it.

There will always be new kernel versions coming out with something to fix. The kernel is over 6 million lines of source code, you bet there are bugs in there, things that need improving, etc., and kernel.org is updating their maintained kernels every week. Kernel updates are normal and necessary.

Here's the changelog for Ubuntu's current development version -39:

Code: Select all

linux (4.15.0-39.42) bionic; urgency=medium

  * linux: 4.15.0-39.42 -proposed tracker (LP: #1799411)

  * Linux: insufficient shootdown for paging-structure caches (LP: #1798897)
    - mm: move tlb_table_flush to tlb_flush_mmu_free
    - mm/tlb: Remove tlb_remove_table() non-concurrent condition
    - mm/tlb, x86/mm: Support invalidating TLB caches for RCU_TABLE_FREE
    - [Config] CONFIG_HAVE_RCU_TABLE_INVALIDATE=y

  * Ubuntu18.04: GPU total memory is reduced (LP: #1792102)
    - Revert "powerpc/powernv: Increase memory block size to 1GB on radix"

  * arm64: snapdragon: reduce boot noise (LP: #1797154)
    - [Config] arm64: snapdragon: DRM_MSM=m
    - [Config] arm64: snapdragon: SND*=m
    - [Config] arm64: snapdragon: disable ARM_SDE_INTERFACE
    - [Config] arm64: snapdragon: disable DRM_I2C_ADV7511_CEC
    - [Config] arm64: snapdragon: disable VIDEO_ADV7511, VIDEO_COBALT

  * [Bionic] CPPC bug fixes (LP: #1796949)
    - ACPI / CPPC: Update all pr_(debug/err) messages to log the susbspace id
    - cpufreq: CPPC: Don't set transition_latency
    - ACPI / CPPC: Fix invalid PCC channel status errors

  * regression in 'ip --family bridge neigh' since linux v4.12 (LP: #1796748)
    - rtnetlink: fix rtnl_fdb_dump() for ndmsg header

  * screen displays abnormally on the lenovo M715 with the AMD GPU (Radeon Vega
    8 Mobile, rev ca, 1002:15dd) (LP: #1796786)
    - drm/amd/display: Fix takover from VGA mode
    - drm/amd/display: early return if not in vga mode in disable_vga
    - drm/amd/display: Refine disable VGA

  * arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/kernel/setup.c:271
    reserve_memblock_reserved_regions (LP: #1797139)
    - SAUCE: arm64: Fix /proc/iomem for reserved but not memory regions

  * The front MIC can't work on the Lenovo M715 (LP: #1797292)
    - ALSA: hda/realtek - Fix the problem of the front MIC on the Lenovo M715

  * Keyboard backlight sysfs sometimes is missing on Dell laptops (LP: #1797304)
    - platform/x86: dell-smbios: Correct some style warnings
    - platform/x86: dell-smbios: Rename dell-smbios source to dell-smbios-base
    - platform/x86: dell-smbios: Link all dell-smbios-* modules together
    - [Config] CONFIG_DELL_SMBIOS_SMM=y, CONFIG_DELL_SMBIOS_WMI=y

  * rpi3b+: ethernet not working (LP: #1797406)
    - lan78xx: Don't reset the interface on open

  * 87cdf3148b11 was never backported to 4.15  (LP: #1795653)
    - xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto

  * [Ubuntu18.04][Power9][DD2.2]package installation segfaults inside debian
    chroot env in P9 KVM guest with HTM enabled (kvm) (LP: #1792501)
    - KVM: PPC: Book3S HV: Fix guest r11 corruption with POWER9 TM workarounds

  * Provide mode where all vCPUs on a core must be the same VM (LP: #1792957)
    - KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same
      VM

  * fscache: bad refcounting in fscache_op_complete leads to OOPS (LP: #1797314)
    - SAUCE: fscache: Fix race in decrementing refcount of op->npages

  * CVE-2018-9363
    - Bluetooth: hidp: buffer overflow in hidp_process_report

  * CVE-2017-13168
    - scsi: sg: mitigate read/write abuse

  * [Bionic] ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID
    is set (LP: #1797200)
    - ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID is set

  * [Bionic] arm64: topology: Avoid checking numa mask for scheduler MC
    selection (LP: #1797202)
    - arm64: topology: Avoid checking numa mask for scheduler MC selection

  * crypto/vmx - Backport of Fix sleep-in-atomic bugs patch for 18.04
    (LP: #1790832)
    - crypto: vmx - Fix sleep-in-atomic bugs

  * hns3: autoneg settings get lost on down/up (LP: #1797654)
    - net: hns3: Fix for information of phydev lost problem when down/up

  * not able to unwind the stack from within __kernel_clock_gettime in the Linux
    vDSO (LP: #1797963)
    - powerpc/vdso: Correct call frame information

  * Signal 7 error when running GPFS tracing in cluster (LP: #1792195)
    - powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.
    - powerpc/mm/radix: Only need the Nest MMU workaround for R -> RW transition

  * Support Edge Gateway's WIFI LED (LP: #1798330)
    - SAUCE: mwifiex: Switch WiFi LED state according to the device status

  * Support Edge Gateway's Bluetooth LED (LP: #1798332)
    - SAUCE: Bluetooth: Support for LED on Edge Gateways

  * USB cardreader (0bda:0328) make the system can't enter s3 or hang
    (LP: #1798328)
    - usb: Don't disable Latency tolerance Messaging (LTM) before port reset

  * CVE-2018-15471
    - xen-netback: fix input validation in xenvif_set_hash_mapping()

  * CVE-2018-16658
    - cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status

  * [Bionic] Update ThunderX2 implementation defined pmu core events
    (LP: #1796904)
    - perf vendor events arm64: Update ThunderX2 implementation defined pmu core
      events

  * the machine of lenovo M715 with the AMD GPU (Radeon Vega 8 Mobile, rev ca,
    1002:15dd) often hangs randomly (LP: #1796789)
    - drm/amd: Add missing fields in atom_integrated_system_info_v1_11

  * [18.04] GLK hang after a while (LP: #1760545)
    - drm/i915/glk: Add MODULE_FIRMWARE for Geminilake

  * Fix usbcore.quirks when used at boot (LP: #1795784)
    - usb: core: safely deal with the dynamic quirk lists

 -- Kleber Sacilotto de Souza <email address hidden>  Tue, 23 Oct 2018 14:44:55 +0000
This is not a kernel cleared for general release, that's why you're not seeing it offered in Update Manager for now. And should critical bugs be discovered during testing, you never will see this one, they'll fix the bugs in a new version before releasing it to you.

nakednorman
Level 1
Level 1
Posts: 31
Joined: Mon Jan 02, 2017 9:05 am

[SOLVED] Re: Kernel 4.15.0.38

Post by nakednorman » Fri Oct 26, 2018 9:18 am

Thank you Moem & gm10.
I had asked here because nothing came up when I "asked the Duck" :) .
I didn't know where else to check.
NN
Last edited by nakednorman on Fri Oct 26, 2018 9:34 am, edited 1 time in total.

User avatar
Moem
Level 17
Level 17
Posts: 7229
Joined: Tue Nov 17, 2015 9:14 am
Location: The Netherlands
Contact:

Re: Kernel 4.15.0.38

Post by Moem » Fri Oct 26, 2018 9:32 am

It was a fine thing to ask. Others may be wondering about the same thing and now they may find your question :D
Especially if you mark it as SOLVED.
Image

If your issue is solved, kindly indicate that by editing the first post in the topic, and adding [SOLVED] to the title. Thanks!

Post Reply

Return to “Other topics”