Bug #1758206 “Ubuntu 18.04 [ WSP DD2.2 with stop4 and stop5 enab...” : Bugs : linux package : Ubuntu

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-23: console log

#1

console log Edit (13.6 KiB, text/plain)

Default Comment by Bridge

tags:

added: architecture-ppc64le bugnameltc-165948 severity-high targetmilestone-inin1804

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-23:

#2

console log Edit (7.0 KiB, text/plain)

Default Comment by Bridge

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-23: sosreport

#3

sosreport Edit (6.3 MiB, application/x-xz)

Default Comment by Bridge

Changed in ubuntu:
assignee:	nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
affects:	ubuntu → linux (Ubuntu)

Frank Heimes (fheimes) on 2018-03-23

Changed in ubuntu-power-systems:
importance:	Undecided → High
assignee:	nobody → Canonical Kernel Team (canonical-kernel-team)
tags:	added: triage-g
Changed in ubuntu-power-systems:
status:	New → Triaged

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-26: Comment bridged from LTC Bugzilla

#4

------- Comment From <email address hidden> 2018-03-25 21:18 EDT-------
Can we get patched kernel for test to try this out.

Joseph Salisbury (jsalisbury) on 2018-03-27

Changed in linux (Ubuntu):
status:	New → In Progress
assignee:	Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Joseph Salisbury (jsalisbury)
importance:	Undecided → High

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2018-03-27:

#5

I built a Bionic test kernel with the three commits mentioned in the bug description. The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1758206

Can you test this kernel and see if it resolves this bug?

Note, to test this kernel, you need to install both the linux-image and linux-image-extra .deb packages.

Thanks in advance!

Frank Heimes (fheimes) on 2018-03-27

Changed in ubuntu-power-systems:
status:	Triaged → In Progress

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-29:

#6

Download full text (6.6 KiB)

------- Comment From <email address hidden> 2018-03-29 11:31 EDT-------
(In reply to comment #10)
> I built a Bionic test kernel with the three commits mentioned in the bug
> description. The test kernel can be downloaded from:
> http://kernel.ubuntu.com/~jsalisbury/lp1758206
>
> Can you test this kernel and see if it resolves this bug?
>
> Note, to test this kernel, you need to install both the linux-image and
> linux-image-extra .deb packages.
>
> Thanks in advance!

Tried with given kernel, kexec still failed. Please find logs below.

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT is off
root@ltc-wspoon4:~# kdump-config show
DUMP_MODE: kdump
USE_KDUMP: 1
KDUMP_SYSCTL: kernel.panic_on_oops=1
KDUMP_COREDIR: /var/crash
crashkernel addr:
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinux-4.15.0-12-generic
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to /var/lib/kdump/initrd.img-4.15.0-12-generic
current state: ready to kdump

kexec command:
/sbin/kexec -p --command-line="root=UUID=0266024d-8ea3-4132-ad62-b49befd6f8d9 ro quiet splash nr_cpus=1 systemd.unit=kdump-tools.service irqpoll noirqdistrib nousb" --initrd=/var/lib/kdump/initrd.img /var/lib/kdump/vmlinuz
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[ 951.567597] sysrq: SysRq : This sysrq operation is disabled.
root@ltc-wspoon4:~# echo 1 > /proc/sys/kernel/sysrq
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[ 968.396522] sysrq: SysRq : Trigger a crash
[ 968.396558] Unable to handle kernel paging request for data at address 0x00000000
[ 968.396602] Faulting instruction address: 0xc0000000007ec768
[ 968.396640] Oops: Kernel access of bad area, sig: 11 [#1]
[ 968.396670] LE SMP NR_CPUS=2048 NUMA PowerNV
[ 968.396703] Modules linked in: idt_89hpesx(E) at24 uio_pdrv_genirq ofpart cmdlinepart powernv_flash mtd uio ibmpowernv ipmi_powernv vmx_crypto ipmi_devintf ipmi_msghandler opal_prd crct10dif_vpmsum sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci
[ 968.396893] CPU: 28 PID: 3086 Comm: bash Tainted: G E 4.15.0-12-generic #13~lp1758206
[ 968.396944] NIP: c0000000007ec768 LR: c0000000007ed6a8 CTR: c0000000007ec740
[ 968.396989] REGS: c0000000054fb9f0 TRAP: 0300 Tainted: G E (4.15.0-12-generic)
[ 968.397040] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28222222 XER: 20040000
[ 968.397090] CFAR: c0000000007ed6a4 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1
[ 968.397090] GPR00: c0000000007ed6a8 c0000000054fbc70 c0000000016eaf00 0000000000000063
[ 968.397090] GPR04: c000001ff76bce18 c000001ff76d4368 9000000000009033 000000000000000a
[ 968.397090] GPR08: 0000000000000007 0000000000000001 0000000000000000 9000000000001003
[ 968.397090] GPR12: c0000000007ec740 c000000007a33400 00000a463c88ae48 0000000000000000
[ 968.397090] GPR16: 00000a462439e9f0 00000a4624431998 00000a46244319d0 00000a4624468204
[ 968.397090] GPR20: 0000000000000000 0000000000000001 0000000000000000 00007ffff9ecd164
[ 968.397090] GPR24: 00007ffff9ecd160 00000a462446afc4 c0000000015e9968 0000000000000002
[ 968.397090] GPR28: 0...

------- Comment From pavrampu@in.ibm.com 2018-03-29 11:31 EDT-------
(In reply to comment #10)
> I built a Bionic test kernel with the three commits mentioned in the bug
> description.  The test kernel can be downloaded from:
> http://kernel.ubuntu.com/~jsalisbury/lp1758206
>
> Can you test this kernel and see if it resolves this bug?
>
> Note, to test this kernel, you need to install both the linux-image and
> linux-image-extra .deb packages.
>
> Thanks in advance!

Tried with given kernel, kexec still failed. Please find logs below.

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT is off
root@ltc-wspoon4:~# kdump-config show
DUMP_MODE:        kdump
USE_KDUMP:        1
KDUMP_SYSCTL:     kernel.panic_on_oops=1
KDUMP_COREDIR:    /var/crash
crashkernel addr:
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinux-4.15.0-12-generic
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to /var/lib/kdump/initrd.img-4.15.0-12-generic
current state:    ready to kdump

kexec command:
/sbin/kexec -p --command-line="root=UUID=0266024d-8ea3-4132-ad62-b49befd6f8d9 ro quiet splash nr_cpus=1 systemd.unit=kdump-tools.service irqpoll noirqdistrib nousb" --initrd=/var/lib/kdump/initrd.img /var/lib/kdump/vmlinuz
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[  951.567597] sysrq: SysRq : This sysrq operation is disabled.
root@ltc-wspoon4:~# echo 1 > /proc/sys/kernel/sysrq
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[  968.396522] sysrq: SysRq : Trigger a crash
[  968.396558] Unable to handle kernel paging request for data at address 0x00000000
[  968.396602] Faulting instruction address: 0xc0000000007ec768
[  968.396640] Oops: Kernel access of bad area, sig: 11 [#1]
[  968.396670] LE SMP NR_CPUS=2048 NUMA PowerNV
[  968.396703] Modules linked in: idt_89hpesx(E) at24 uio_pdrv_genirq ofpart cmdlinepart powernv_flash mtd uio ibmpowernv ipmi_powernv vmx_crypto ipmi_devintf ipmi_msghandler opal_prd crct10dif_vpmsum sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci
[  968.396893] CPU: 28 PID: 3086 Comm: bash Tainted: G            E    4.15.0-12-generic #13~lp1758206
[  968.396944] NIP:  c0000000007ec768 LR: c0000000007ed6a8 CTR: c0000000007ec740
[  968.396989] REGS: c0000000054fb9f0 TRAP: 0300   Tainted: G            E     (4.15.0-12-generic)
[  968.397040] MSR:  9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 28222222  XER: 20040000
[  968.397090] CFAR: c0000000007ed6a4 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1
[  968.397090] GPR00: c0000000007ed6a8 c0000000054fbc70 c0000000016eaf00 0000000000000063
[  968.397090] GPR04: c000001ff76bce18 c000001ff76d4368 9000000000009033 000000000000000a
[  968.397090] GPR08: 0000000000000007 0000000000000001 0000000000000000 9000000000001003
[  968.397090] GPR12: c0000000007ec740 c000000007a33400 00000a463c88ae48 0000000000000000
[  968.397090] GPR16: 00000a462439e9f0 00000a4624431998 00000a46244319d0 00000a4624468204
[  968.397090] GPR20: 0000000000000000 0000000000000001 0000000000000000 00007ffff9ecd164
[  968.397090] GPR24: 00007ffff9ecd160 00000a462446afc4 c0000000015e9968 0000000000000002
[  968.397090] GPR28: 0000000000000063 0000000000000007 c000000001572a9c c0000000015e9d08
[  968.397486] NIP [c0000000007ec768] sysrq_handle_crash+0x28/0x30
[  968.397524] LR [c0000000007ed6a8] __handle_sysrq+0xf8/0x2c0
[  968.397554] Call Trace:
[  968.397571] [c0000000054fbc70] [c0000000007ed688] __handle_sysrq+0xd8/0x2c0 (unreliable)
[  968.397618] [c0000000054fbd10] [c0000000007edeb4] write_sysrq_trigger+0x64/0x90
[  968.397664] [c0000000054fbd40] [c00000000047dfe8] proc_reg_write+0x88/0xd0
[  968.397703] [c0000000054fbd70] [c0000000003d131c] __vfs_write+0x3c/0x70
[  968.397742] [c0000000054fbd90] [c0000000003d1578] vfs_write+0xd8/0x220
[  968.397781] [c0000000054fbde0] [c0000000003d1898] SyS_write+0x68/0x110
[  968.397821] [c0000000054fbe30] [c00000000000b184] system_call+0x58/0x6c
[  968.397857] Instruction dump:
[  968.397881] 4bfff9f1 4bfffe50 3c4c00f0 3842e7c0 7c0802a6 60000000 39200001 3d42001c
[  968.397929] 394a6db0 912a0000 7c0004ac 39400000 <992a0000> 4e800020 3c4c00f0 3842e790
[  968.397979] ---[ end trace 42b5936ebd77f0df ]---
[  969.403420]
[  969.403499] Sending IPI to other CPUs
[  970.[ 9304.282854548,5] OPAL: Switch to big-endian OS
699527] IPI c[ 9308.106771743,5] OPAL: Switch to little-endian OS
[ 9309.438684420,3] PHB#0000[0:0]: CRESET: Unexpected slot state 00000102, resetting...
[ 9310.039758053,3] PHB#0000[0:0]: Timeout waiting for DLP PG reset !
[ 9310.039836165,3] PHB#0000[0:0]: Initialization failed
[ 9312.102310864,3] PHB#0001[0:1]: Timeout waiting for DLP PG reset !
[ 9312.102386083,3] PHB#0001[0:1]: Initialization failed
[ 9314.164868252,3] PHB#0002[0:2]: Timeout waiting for DLP PG reset !
[ 9314.165418307,3] PHB#0002[0:2]: Initialization failed
[ 9316.116455526,3] PHB#0003[0:3]: CRESET: Unexpected slot state 00000102, resetting...
[ 9316.229566014,3] PHB#0003[0:3]: Timeout waiting for DLP PG reset !
[ 9316.229647769,3] PHB#0003[0:3]: Initialization failed
[ 9318.292115865,3] PHB#0004[0:4]: Timeout waiting for DLP PG reset !
[ 9318.294132075,3] PHB#0004[0:4]: Initialization failed
[ 9320.356607557,3] PHB#0005[0:5]: Timeout waiting for DLP PG reset !
[ 9320.357808219,3] PHB#0005[0:5]: Initialization failed
[ 9322.308528728,3] PHB#0030[8:0]: CRESET: Unexpected slot state 00000102, resetting...
[ 9322.421406022,3] PHB#0030[8:0]: Timeout waiting for DLP PG reset !
[ 9322.422552792,3] PHB#0030[8:0]: Initialization failed
[ 9324.372530715,3] PHB#0033[8:3]: CRESET: Unexpected slot state 00000102, resetting...
[ 9324.485399371,3] PHB#0033[8:3]: Timeout waiting for DLP PG reset !
[ 9324.485730350,3] PHB#0033[8:3]: Initialization failed
[ 9326.436229911,3] PHB#0034[8:4]: CRESET: Unexpected slot state 00000102, resetting...
[ 9328.510462286,3] PHB#0035[8:5]: Timeout waiting for DLP PG reset !
[ 9328.511713428,3] PHB#0035[8:5]: Initialization failed
omplete
[  972.402103] kexec: Starting switchover sequence.
[    0.753802] integrity: Unable to open file: /etc/keys/x509_ima.der (-2)
[    0.753808] integrity: Unable to open file: /etc/keys/x509_evm.der (-2)
[    0.830129] vio vio: uevent: failed to send synthetic uevent

Gave up waiting for root file system device.  Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT!  UUID=0266024d-8ea3-4132-ad62-b49befd6f8d9 does not exist.  Dropping to a shell!

BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)
(initramfs)
(initramfs)
(initramfs)
(initramfs)

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2018-03-29:

#7

Can you confirm the appropriate test kernel was booted with 'uname -a'? You should see the text 'lp1758206' in the kernel name.

Also, could there be more the the three patches required that were posted to the description:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b9c96eae72d862726f2f4bfcec2078240c33c5
("powerpc/crash: Remove the test for cpu_online in the IPI callback")

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4145f358644b970fcff293c09fdcc7939e8527d2
("powernv/kdump: Fix cases where the kdump kernel can get HMI's")

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=910961754572a2f4c83ad7e610d180
("powerpc/kdump: Fix powernv build break when KEXEC_CORE=n")

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-30:

#8

Download full text (14.6 KiB)

------- Comment From <email address hidden> 2018-03-30 01:14 EDT-------
Tested again with given kernel, dump capture is successful with smt=2 and smt=off.

Sorry fr the wrong update in previous comment, not sure what i had missed yesterday.

root@ltc-wspoon4:~# uname -a
Linux ltc-wspoon4 4.15.0-12-generic #13~lp1758206 SMP Tue Mar 27 15:20:59 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
root@ltc-wspoon4:~# ppc64_cpu --smt=off
root@ltc-wspoon4:~#
root@ltc-wspoon4:~# echo 1 > /proc/sys/kernel/sysrq
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[ 1424.806117] sysrq: SysRq : Trigger a crash
[ 1424.806163] Unable to handle kernel paging request for data at address 0x00000000
[ 1424.806267] Faulting instruction address: 0xc0000000007ec768
[ 1424.806352] Oops: Kernel access of bad area, sig: 11 [#1]
[ 1424.806424] LE SMP NR_CPUS=2048 NUMA PowerNV
[ 1424.806483] Modules linked in: idt_89hpesx(E) at24 ofpart uio_pdrv_genirq cmdlinepart powernv_flash uio mtd opal_prd ipmi_powernv ipmi_devintf ibmpowernv vmx_crypto ipmi_msghandler crct10dif_vpmsum sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci
[ 1424.806828] CPU: 0 PID: 3110 Comm: bash Tainted: G E 4.15.0-12-generic #13~lp1758206
[ 1424.806963] NIP: c0000000007ec768 LR: c0000000007ed6a8 CTR: c0000000007ec740
[ 1424.807075] REGS: c000001fce3d39f0 TRAP: 0300 Tainted: G E (4.15.0-12-generic)
[ 1424.807211] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28222222 XER: 20040000
[ 1424.807325] CFAR: c0000000007ed6a4 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1
[ 1424.807325] GPR00: c0000000007ed6a8 c000001fce3d3c70 c0000000016eaf00 0000000000000063
[ 1424.807325] GPR04: c000001ff6fbce18 c000001ff6fd4368 9000000000009033 000000000000000a
[ 1424.807325] GPR08: 0000000000000007 0000000000000001 0000000000000000 9000000000001003
[ 1424.807325] GPR12: c0000000007ec740 c000000007a20000 000006127f00ae48 0000000000000000
[ 1424.807325] GPR16: 000006124f78e9f0 000006124f821998 000006124f8219d0 000006124f858204
[ 1424.807325] GPR20: 0000000000000000 0000000000000001 0000000000000000 00007fffd6e57524
[ 1424.807325] GPR24: 00007fffd6e57520 000006124f85afc4 c0000000015e9968 0000000000000002
[ 1424.807325] GPR28: 0000000000000063 0000000000000004 c000000001572a9c c0000000015e9d08
[ 1424.808272] NIP [c0000000007ec768] sysrq_handle_crash+0x28/0x30
[ 1424.808364] LR [c0000000007ed6a8] __handle_sysrq+0xf8/0x2c0
[ 1424.808417] Call Trace:
[ 1424.808468] [c000001fce3d3c70] [c0000000007ed688] __handle_sysrq+0xd8/0x2c0 (unreliable)
[ 1424.808582] [c000001fce3d3d10] [c0000000007edeb4] write_sysrq_trigger+0x64/0x90
[ 1424.808690] [c000001fce3d3d40] [c00000000047dfe8] proc_reg_write+0x88/0xd0
[ 1424.808782] [c000001fce3d3d70] [c0000000003d131c] __vfs_write+0x3c/0x70
[ 1424.808875] [c000001fce3d3d90] [c0000000003d1578] vfs_write+0xd8/0x220
[ 1424.808957] [c000001fce3d3de0] [c0000000003d1898] SyS_write+0x68/0x110
[ 1424.809038] [c000001fce3d3e30] [c00000000000b184] system_call+0x58/0x6c
[ 1424.809139] Instruction dump:
[ 1424.809191] 4bfff9f1 4bfffe50 3c4c00f0 3842e7c0 7c0802a6 60000000 ...

------- Comment From pavrampu@in.ibm.com 2018-03-30 01:14 EDT-------
Tested again with given kernel, dump capture is successful with smt=2 and smt=off.

Sorry fr the wrong update in previous comment, not sure what i had missed yesterday.

root@ltc-wspoon4:~# uname -a
Linux ltc-wspoon4 4.15.0-12-generic #13~lp1758206 SMP Tue Mar 27 15:20:59 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
root@ltc-wspoon4:~# ppc64_cpu --smt=off
root@ltc-wspoon4:~#
root@ltc-wspoon4:~# echo 1 > /proc/sys/kernel/sysrq
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[ 1424.806117] sysrq: SysRq : Trigger a crash
[ 1424.806163] Unable to handle kernel paging request for data at address 0x00000000
[ 1424.806267] Faulting instruction address: 0xc0000000007ec768
[ 1424.806352] Oops: Kernel access of bad area, sig: 11 [#1]
[ 1424.806424] LE SMP NR_CPUS=2048 NUMA PowerNV
[ 1424.806483] Modules linked in: idt_89hpesx(E) at24 ofpart uio_pdrv_genirq cmdlinepart powernv_flash uio mtd opal_prd ipmi_powernv ipmi_devintf ibmpowernv vmx_crypto ipmi_msghandler crct10dif_vpmsum sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci
[ 1424.806828] CPU: 0 PID: 3110 Comm: bash Tainted: G            E    4.15.0-12-generic #13~lp1758206
[ 1424.806963] NIP:  c0000000007ec768 LR: c0000000007ed6a8 CTR: c0000000007ec740
[ 1424.807075] REGS: c000001fce3d39f0 TRAP: 0300   Tainted: G            E     (4.15.0-12-generic)
[ 1424.807211] MSR:  9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 28222222  XER: 20040000
[ 1424.807325] CFAR: c0000000007ed6a4 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1
[ 1424.807325] GPR00: c0000000007ed6a8 c000001fce3d3c70 c0000000016eaf00 0000000000000063
[ 1424.807325] GPR04: c000001ff6fbce18 c000001ff6fd4368 9000000000009033 000000000000000a
[ 1424.807325] GPR08: 0000000000000007 0000000000000001 0000000000000000 9000000000001003
[ 1424.807325] GPR12: c0000000007ec740 c000000007a20000 000006127f00ae48 0000000000000000
[ 1424.807325] GPR16: 000006124f78e9f0 000006124f821998 000006124f8219d0 000006124f858204
[ 1424.807325] GPR20: 0000000000000000 0000000000000001 0000000000000000 00007fffd6e57524
[ 1424.807325] GPR24: 00007fffd6e57520 000006124f85afc4 c0000000015e9968 0000000000000002
[ 1424.807325] GPR28: 0000000000000063 0000000000000004 c000000001572a9c c0000000015e9d08
[ 1424.808272] NIP [c0000000007ec768] sysrq_handle_crash+0x28/0x30
[ 1424.808364] LR [c0000000007ed6a8] __handle_sysrq+0xf8/0x2c0
[ 1424.808417] Call Trace:
[ 1424.808468] [c000001fce3d3c70] [c0000000007ed688] __handle_sysrq+0xd8/0x2c0 (unreliable)
[ 1424.808582] [c000001fce3d3d10] [c0000000007edeb4] write_sysrq_trigger+0x64/0x90
[ 1424.808690] [c000001fce3d3d40] [c00000000047dfe8] proc_reg_write+0x88/0xd0
[ 1424.808782] [c000001fce3d3d70] [c0000000003d131c] __vfs_write+0x3c/0x70
[ 1424.808875] [c000001fce3d3d90] [c0000000003d1578] vfs_write+0xd8/0x220
[ 1424.808957] [c000001fce3d3de0] [c0000000003d1898] SyS_write+0x68/0x110
[ 1424.809038] [c000001fce3d3e30] [c00000000000b184] system_call+0x58/0x6c
[ 1424.809139] Instruction dump:
[ 1424.809191] 4bfff9f1 4bfffe50 3c4c00f0 3842e7c0 7c0802a6 60000000 39200001 3d42001c
[ 1424.809294] 394a6db0 912a0000 7c0004ac 39400000 <992a0000> 4e800020 3c4c00f0 3842e790
[ 1424.809399] ---[ end trace a6b92894072107e0 ]---
[ 1425.814557]
[ 1425.814659] Sending IPI to other CPUs
[ 1427[ 1827.188061287,5] OPAL: Switch to big-endian OS
.111853] IPI complete
[ 1428[ 1830.496187306,5] OPAL: Switch to little-endian OS
[ 1832.313865861,3] PHB#0000[0:0]: CRESET: Unexpected slot state 00000102, resetting...
[ 1840.498727171,3] PHB#0003[0:3]: CRESET: Unexpected slot state 00000102, resetting...
[ 1849.245109062,3] PHB#0030[8:0]: CRESET: Unexpected slot state 00000102, resetting...
[ 1851.209060452,3] PHB#0033[8:3]: CRESET: Unexpected slot state 00000102, resetting...
[ 1853.170614858,3] PHB#0034[8:4]: CRESET: Unexpected slot state 00000102, resetting...
.808156] kexec: Starting switchover sequence.
[    1.199857] integrity: Unable to open file: /etc/keys/x509_ima.der (-2)
[    1.199861] integrity: Unable to open file: /etc/keys/x509_evm.der (-2)
[    1.286500] vio vio: uevent: failed to send synthetic uevent
/dev/sdb2: recovering journal
/dev/sdb2: clean, 163655/61054976 files, 17123931/244188416 blocks
[    6.018312] vio vio: uevent: failed to send synthetic uevent
[  OK  ] Started Show Plymouth Boot Screen.
plymouth-start.service
[  OK  ] Started Forward Password Requests to Plymouth Directory Watch.
[  OK  ] Reached target Local Encrypted Volumes.
[  OK  ] Started Network Service.
systemd-networkd.service
Starting Wait for Network to be Configured...
[  OK  ] Reached target Network.
[    7.934300] PKCS#7 signature not signed with a trusted key
[    7.934373] PKCS#7 signature not signed with a trusted key
[    7.935026] PKCS#7 signature not signed with a trusted key
[    7.935470] PKCS#7 signature not signed with a trusted key
[    7.936307] PKCS#7 signature not signed with a trusted key
[    7.937347] PKCS#7 signature not signed with a trusted key
[    7.938346] PKCS#7 signature not signed with a trusted key
[    7.939391] PKCS#7 signature not signed with a trusted key
[    7.939831] PKCS#7 signature not signed with a trusted key
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[  OK  ] Created slice system-lvm2\x2dpvscan.slice.
Starting LVM2 PV scan on device 8:3...
[  OK  ] Started AppArmor initialization.
apparmor.service
[  OK  ] Started LVM2 PV scan on device 8:3.
lvm2-pvscan@8:3.service
[  OK  ] Started Flush Journal to Persistent Storage.
systemd-journal-flush.service
Starting Create Volatile Files and Directories...
[  OK  ] Started Create Volatile Files and Directories.
systemd-tmpfiles-setup.service
Starting Update UTMP about System Boot/Shutdown...
Starting Network Time Synchronization...
[  OK  ] Started Update UTMP about System Boot/Shutdown.
systemd-update-utmp.service
[  OK  ] Started Network Time Synchronization.
systemd-timesyncd.service
[  OK  ] Reached target System Time Synchronized.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Wait for Network to be Configured.
systemd-networkd-wait-online.service
[  OK  ] Reached target Network is Online.
Starting Kernel crash dump capture service...
[   12.548307] kdump-tools[961]: Starting kdump-tools:  * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201803300002/dump-incomplete
Copying data                                      : [100.0 %] |           eta: 0s
[   25.779768] kdump-tools[961]: The kernel version is not supported.
[   25.779891] kdump-tools[961]: The makedumpfile operation may be incomplete.
[   25.779997] kdump-tools[961]: The dumpfile is saved to /var/crash/201803300002/dump-incomplete.
[   25.780101] kdump-tools[961]: makedumpfile Completed.
[   25.786228] kdump-tools[961]:  * kdump-tools: saved vmcore in /var/crash/201803300002
[   29.025567] kdump-tools[961]:  * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201803300002/dmesg.201803300002
[   29.067040] kdump-tools[961]: The kernel version is not supported.
[   29.067179] kdump-tools[961]: The makedumpfile operation may be incomplete.
[   29.067281] kdump-tools[961]: The dmesg log is saved to /var/crash/201803300002/dmesg.201803300002.
[   29.067401] kdump-tools[961]: makedumpfile Completed.
[   29.067524] kdump-tools[961]:  * kdump-tools: saved dmesg content in /var/crash/201803300002
[   29.179499] kdump-tools[961]: Fri, 30 Mar 2018 00:02:37 -0500
[   29.268561] kdump-tools[961]: Rebooting.
[   29.360898] reboot: Restarting system
[ 1891.310447037,5] OPAL: Reboot request...

root@ltc-wspoon4:~# ppc64_cpu --smt=2
root@ltc-wspoon4:~# ppc64_cpu --smt
SMT=2
root@ltc-wspoon4:~# echo 1 > /proc/sys/kernel/sysrq
root@ltc-wspoon4:~# echo "c" > /proc/sysrq-trigger
[  304.763364] sysrq: SysRq : Trigger a crash
[  304.763397] Unable to handle kernel paging request for data at address 0x00000000
[  304.763441] Faulting instruction address: 0xc0000000007ec768
[  304.763480] Oops: Kernel access of bad area, sig: 11 [#1]
[  304.763510] LE SMP NR_CPUS=2048 NUMA PowerNV
[  304.763543] Modules linked in: idt_89hpesx(E) ipmi_powernv ipmi_devintf vmx_crypto ipmi_msghandler crct10dif_vpmsum opal_prd at24 ofpart uio_pdrv_genirq uio cmdlinepart powernv_flash ibmpowernv mtd sch_fq_codel ip_tables x_tables autofs4 ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci crc32c_vpmsum drm tg3 libahci
[  304.763732] CPU: 40 PID: 2980 Comm: bash Tainted: G            E    4.15.0-12-generic #13~lp1758206
[  304.763784] NIP:  c0000000007ec768 LR: c0000000007ed6a8 CTR: c0000000007ec740
[  304.763828] REGS: c000000005d539f0 TRAP: 0300   Tainted: G            E     (4.15.0-12-generic)
[  304.763879] MSR:  9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 28222222  XER: 20040000
[  304.763929] CFAR: c0000000007ed6a4 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1
[  304.763929] GPR00: c0000000007ed6a8 c000000005d53c70 c0000000016eaf00 0000000000000063
[  304.763929] GPR04: c000001ff79bce18 c000001ff79d4368 9000000000009033 000000000000000a
[  304.763929] GPR08: 0000000000000007 0000000000000001 0000000000000000 9000000000001003
[  304.763929] GPR12: c0000000007ec740 c000000007a3b800 00000d7bc5ccb048 0000000000000000
[  304.763929] GPR16: 00000d7b8865e9f0 00000d7b886f1998 00000d7b886f19d0 00000d7b88728204
[  304.763929] GPR20: 0000000000000000 0000000000000001 0000000000000000 00007ffff2a55254
[  304.763929] GPR24: 00007ffff2a55250 00000d7b8872afc4 c0000000015e9968 0000000000000002
[  304.763929] GPR28: 0000000000000063 0000000000000004 c000000001572a9c c0000000015e9d08
[  304.764328] NIP [c0000000007ec768] sysrq_handle_crash+0x28/0x30
[  304.764367] LR [c0000000007ed6a8] __handle_sysrq+0xf8/0x2c0
[  304.764396] Call Trace:
[  304.764414] [c000000005d53c70] [c0000000007ed688] __handle_sysrq+0xd8/0x2c0 (unreliable)
[  304.764460] [c000000005d53d10] [c0000000007edeb4] write_sysrq_trigger+0x64/0x90
[  304.764507] [c000000005d53d40] [c00000000047dfe8] proc_reg_write+0x88/0xd0
[  304.764547] [c000000005d53d70] [c0000000003d131c] __vfs_write+0x3c/0x70
[  304.764586] [c000000005d53d90] [c0000000003d1578] vfs_write+0xd8/0x220
[  304.764626] [c000000005d53de0] [c0000000003d1898] SyS_write+0x68/0x110
[  304.764675] [c000000005d53e30] [c00000000000b184] system_call+0x58/0x6c
[  304.764749] Instruction dump:
[  304.764801] 4bfff9f1 4bfffe50 3c4c00f0 3842e7c0 7c0802a6 60000000 39200001 3d42001c
[  304.764914] 394a6db0 912a0000 7c0004ac 39400000 <992a0000> 4e800020 3c4c00f0 3842e790
[  304.764973] ---[ end trace f398ca9c3def6fee ]---
[  305.769801]
[  305.769885] Sending IPI to other CPUs
[  307.066750][  426.346633670,5] OPAL: Switch to big-endian OS
IPI complete
[  308.752258][  430.106080901,5] OPAL: Switch to little-endian OS
[  431.432751400,3] PHB#0000[0:0]: CRESET: Unexpected slot state 00000102, resetting...
[  440.104674740,3] PHB#0003[0:3]: CRESET: Unexpected slot state 00000102, resetting...
[  448.361087598,3] PHB#0030[8:0]: CRESET: Unexpected slot state 00000102, resetting...
[  450.323714101,3] PHB#0033[8:3]: CRESET: Unexpected slot state 00000102, resetting...
[  452.285139375,3] PHB#0034[8:4]: CRESET: Unexpected slot state 00000102, resetting...
kexec: Starting switchover sequence.
[    1.209519] integrity: Unable to open file: /etc/keys/x509_ima.der (-2)
[    1.209524] integrity: Unable to open file: /etc/keys/x509_evm.der (-2)
[    1.294768] vio vio: uevent: failed to send synthetic uevent
/dev/sdb2: recovering journal
/dev/sdb2: clean, 163660/61054976 files, 17174134/244188416 blocks
[    5.874570] vio vio: uevent: failed to send synthetic uevent
[  OK  ] Started Show Plymouth Boot Screen.
plymouth-start.service
[  OK  ] Reached target Local Encrypted Volumes.
[  OK  ] Started Forward Password Requests to Plymouth Directory Watch.
[    7.502179] PKCS#7 signature not signed with a trusted key
[    7.502369] PKCS#7 signature not signed with a trusted key
[    7.502389] PKCS#7 signature not signed with a trusted key
[    7.503448] PKCS#7 signature not signed with a trusted key
[    7.503482] PKCS#7 signature not signed with a trusted key
[    7.504590] PKCS#7 signature not signed with a trusted key
[    7.504731] PKCS#7 signature not signed with a trusted key
[    7.505761] PKCS#7 signature not signed with a trusted key
[    7.506811] PKCS#7 signature not signed with a trusted key
[  OK  ] Started Network Service.
systemd-networkd.service
[  OK  ] Reached target Network.
Starting Wait for Network to be Configured...
[  OK  ] Created slice system-lvm2\x2dpvscan.slice.
Starting LVM2 PV scan on device 8:3...
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[  OK  ] Started LVM2 PV scan on device 8:3.
lvm2-pvscan@8:3.service
[  OK  ] Started AppArmor initialization.
apparmor.service
[  OK  ] Started Flush Journal to Persistent Storage.
systemd-journal-flush.service
Starting Create Volatile Files and Directories...
[  OK  ] Started Create Volatile Files and Directories.
systemd-tmpfiles-setup.service
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
[  OK  ] Started Update UTMP about System Boot/Shutdown.
systemd-update-utmp.service
[  OK  ] Started Network Time Synchronization.
systemd-timesyncd.service
[  OK  ] Reached target System Time Synchronized.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Wait for Network to be Configured.
systemd-networkd-wait-online.service
[  OK  ] Reached target Network is Online.
Starting Kernel crash dump capture service...
[   10.834005] kdump-tools[957]: Starting kdump-tools:  * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201803300011/dump-incomplete
Copying data                                      : [100.0 %] |           eta: 0s
[   25.067109] kdump-tools[957]: The kernel version is not supported.
[   25.067229] kdump-tools[957]: The makedumpfile operation may be incomplete.
[   25.067327] kdump-tools[957]: The dumpfile is saved to /var/crash/201803300011/dump-incomplete.
[   25.067417] kdump-tools[957]: makedumpfile Completed.
[   25.076476] kdump-tools[957]:  * kdump-tools: saved vmcore in /var/crash/201803300011
[   27.513300] kdump-tools[957]:  * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201803300011/dmesg.201803300011
[   27.557637] kdump-tools[957]: The kernel version is not supported.
[   27.557774] kdump-tools[957]: The makedumpfile operation may be incomplete.
[   27.557866] kdump-tools[957]: The dmesg log is saved to /var/crash/201803300011/dmesg.201803300011.
[   27.557975] kdump-tools[957]: makedumpfile Completed.
[   27.558090] kdump-tools[957]:  * kdump-tools: saved dmesg content in /var/crash/201803300011
[   27.655814] kdump-tools[957]: Fri, 30 Mar 2018 00:11:18 -0500
[   27.753246] kdump-tools[957]: Rebooting.
[   27.847115] reboot: Restarting system
[  489.155244249,5] OPAL: Reboot request...

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2018-03-30:

#9

Bionic request submitted:
https://lists.ubuntu.com/archives/kernel-team/2018-March/091269.html

Seth Forshee (sforshee) on 2018-03-30

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

Frank Heimes (fheimes) on 2018-04-01

Changed in ubuntu-power-systems:
status:	In Progress → Fix Committed

Revision history for this message

bugproxy (bugproxy) wrote on 2018-04-05:

#10

------- Comment From <email address hidden> 2018-04-05 07:34 EDT-------
Issue is resolved in 4.15.0-15-generic kernel.

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT is off

Starting Kernel crash dump capture service...
[ 11.747657] kdump-tools[952]: Starting kdump-tools: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201804050626/dump-incomplete
Copying data : [100.0 %] \ eta: 0s
[ 27.390223] kdump-tools[952]: The kernel version is not supported.
[ 27.390438] kdump-tools[952]: The makedumpfile operation may be incomplete.
[ 27.390563] kdump-tools[952]: The dumpfile is saved to /var/crash/201804050626/dump-incomplete.
[ 27.390726] kdump-tools[952]: makedumpfile Completed.
[ 27.405543] kdump-tools[952]: * kdump-tools: saved vmcore in /var/crash/201804050626
[ 30.762418] kdump-tools[952]: * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201804050626/dmesg.201804050626
[ 30.802776] kdump-tools[952]: The kernel version is not supported.
[ 30.802923] kdump-tools[952]: The makedumpfile operation may be incomplete.
[ 30.803025] kdump-tools[952]: The dmesg log is saved to /var/crash/201804050626/dmesg.201804050626.
[ 30.803145] kdump-tools[952]: makedumpfile Completed.
[ 30.803263] kdump-tools[952]: * kdump-tools: saved dmesg content in /var/crash/201804050626
[ 30.888353] kdump-tools[952]: Thu, 05 Apr 2018 06:26:24 -0500
[ 31.035631] kdump-tools[952]: Rebooting.
[ 31.126613] reboot: Restarting system
[ 1577.265030518,5] OPAL: Reboot request...

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT=2

Starting Kernel crash dump capture service...
[ 13.378626] kdump-tools[952]: Starting kdump-tools: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201804050631/dump-incomplete
Copying data : [100.0 %] | eta: 0s
[ 27.102530] kdump-tools[952]: The kernel version is not supported.
[ 27.102659] kdump-tools[952]: The makedumpfile operation may be incomplete.
[ 27.102787] kdump-tools[952]: The dumpfile is saved to /var/crash/201804050631/dump-incomplete.
[ 27.102910] kdump-tools[952]: makedumpfile Completed.
[ 27.112064] kdump-tools[952]: * kdump-tools: saved vmcore in /var/crash/201804050631
[ 29.632162] kdump-tools[952]: * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201804050631/dmesg.201804050631
[ 29.672730] kdump-tools[952]: The kernel version is not supported.
[ 29.672890] kdump-tools[952]: The makedumpfile operation may be incomplete.
[ 29.672997] kdump-tools[952]: The dmesg log is saved to /var/crash/201804050631/dmesg.201804050631.
[ 29.673111] kdump-tools[952]: makedumpfile Completed.
[ 29.673249] kdump-tools[952]: * kdump-tools: saved dmesg content in /var/crash/201804050631
[ 29.774672] kdump-tools[952]: Thu, 05 Apr 2018 06:31:40 -0500
[ 29.913780] kdump-tools[952]: Rebooting.

------- Comment From pavrampu@in.ibm.com 2018-04-05 07:34 EDT-------
Issue is resolved in 4.15.0-15-generic kernel.

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT is off

Starting Kernel crash dump capture service...
[   11.747657] kdump-tools[952]: Starting kdump-tools:  * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201804050626/dump-incomplete
Copying data                                      : [100.0 %] \           eta: 0s
[   27.390223] kdump-tools[952]: The kernel version is not supported.
[   27.390438] kdump-tools[952]: The makedumpfile operation may be incomplete.
[   27.390563] kdump-tools[952]: The dumpfile is saved to /var/crash/201804050626/dump-incomplete.
[   27.390726] kdump-tools[952]: makedumpfile Completed.
[   27.405543] kdump-tools[952]:  * kdump-tools: saved vmcore in /var/crash/201804050626
[   30.762418] kdump-tools[952]:  * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201804050626/dmesg.201804050626
[   30.802776] kdump-tools[952]: The kernel version is not supported.
[   30.802923] kdump-tools[952]: The makedumpfile operation may be incomplete.
[   30.803025] kdump-tools[952]: The dmesg log is saved to /var/crash/201804050626/dmesg.201804050626.
[   30.803145] kdump-tools[952]: makedumpfile Completed.
[   30.803263] kdump-tools[952]:  * kdump-tools: saved dmesg content in /var/crash/201804050626
[   30.888353] kdump-tools[952]: Thu, 05 Apr 2018 06:26:24 -0500
[   31.035631] kdump-tools[952]: Rebooting.
[   31.126613] reboot: Restarting system
[ 1577.265030518,5] OPAL: Reboot request...

root@ltc-wspoon4:~# ppc64_cpu --smt
SMT=2

Starting Kernel crash dump capture service...
[   13.378626] kdump-tools[952]: Starting kdump-tools:  * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201804050631/dump-incomplete
Copying data                                      : [100.0 %] |           eta: 0s
[   27.102530] kdump-tools[952]: The kernel version is not supported.
[   27.102659] kdump-tools[952]: The makedumpfile operation may be incomplete.
[   27.102787] kdump-tools[952]: The dumpfile is saved to /var/crash/201804050631/dump-incomplete.
[   27.102910] kdump-tools[952]: makedumpfile Completed.
[   27.112064] kdump-tools[952]:  * kdump-tools: saved vmcore in /var/crash/201804050631
[   29.632162] kdump-tools[952]:  * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201804050631/dmesg.201804050631
[   29.672730] kdump-tools[952]: The kernel version is not supported.
[   29.672890] kdump-tools[952]: The makedumpfile operation may be incomplete.
[   29.672997] kdump-tools[952]: The dmesg log is saved to /var/crash/201804050631/dmesg.201804050631.
[   29.673111] kdump-tools[952]: makedumpfile Completed.
[   29.673249] kdump-tools[952]:  * kdump-tools: saved dmesg content in /var/crash/201804050631
[   29.774672] kdump-tools[952]: Thu, 05 Apr 2018 06:31:40 -0500
[   29.913780] kdump-tools[952]: Rebooting.

Revision history for this message

Launchpad Janitor (janitor) wrote on 2018-04-13:

#11

Download full text (40.4 KiB)

This bug was fixed in the package linux - 4.15.0-15.16

---------------
linux (4.15.0-15.16) bionic; urgency=medium

* linux: 4.15.0-15.16 -proposed tracker (LP: #1761177)

* FFe: Enable configuring resume offset via sysfs (LP: #1760106)
- PM / hibernate: Make passing hibernate offsets more friendly

* /dev/bcache/by-uuid links not created after reboot (LP: #1729145)
- SAUCE: (no-up) bcache: decouple emitting a cached_dev CHANGE uevent

  * Ubuntu18.04:POWER9:DD2.2 - Unable to start a KVM guest with default machine
    type(pseries-bionic) complaining "KVM implementation does not support
    Transactional Memory, try cap-htm=off" (kvm) (LP: #1752026)
    - powerpc: Use feature bit for RTC presence rather than timebase presence
    - powerpc: Book E: Remove unused CPU_FTR_L2CSR bit
    - powerpc: Free up CPU feature bits on 64-bit machines
    - powerpc: Add CPU feature bits for TM bug workarounds on POWER9 v2.2
    - powerpc/powernv: Provide a way to force a core into SMT4 mode
    - KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9
    - KVM: PPC: Book3S HV: Work around XER[SO] bug in fake suspend mode
    - KVM: PPC: Book3S HV: Work around TEXASR bug in fake suspend state

* Important Kernel fixes to be backported for Power9 (kvm) (LP: #1758910)
- powerpc/mm: Fixup tlbie vs store ordering issue on POWER9

  * Ubuntu 18.04 - IO Hang on some namespaces when running HTX with 16
    namespaces (Bolt / NVMe) (LP: #1757497)
    - powerpc/64s: Fix lost pending interrupt due to race causing lost update to
      irq_happened

  * fwts-efi-runtime-dkms 18.03.00-0ubuntu1: fwts-efi-runtime-dkms kernel module
    failed to build (LP: #1760876)
    - [Packaging] include the retpoline extractor in the headers

linux (4.15.0-14.15) bionic; urgency=medium

* linux: 4.15.0-14.15 -proposed tracker (LP: #1760678)

  * [Bionic] mlx4 ETH - mlnx_qos failed when set some TC to vendor
    (LP: #1758662)
    - net/mlx4_en: Change default QoS settings

  * 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

  * Bionic update to 4.15.15 stable release (LP: #1760585)
    - net: dsa: Fix dsa_is_user_port() test inversion
    - openvswitch: meter: fix the incorrect calculation of max delta_t
    - qed: Fix MPA unalign flow in case header is split across two packets.
    - tcp: purge write queue upon aborting the connection
    - qed: Fix non TCP packets should be dropped on iWARP ll2 connection
    - sysfs: symlink: export sysfs_create_link_nowarn()
    - net: phy: relax error checking when creating sysfs link netdev->phydev
    - devlink: Remove redundant free on error path
    - macvlan: filter out unsupported feature flags
    - net: ipv6: keep sk status consistent after datagram connect failure
    - ipv6: old_dport should be a __be16 in __ip6_datagram_connect()
    - ipv6: sr: fix NULL pointer dereference when setting encap source address
    - ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
    - mlxsw: spectrum_buffers: Set a minimum quota for CPU port traffic
    - net: phy: Tell caller result ...

This bug was fixed in the package linux - 4.15.0-15.16

---------------
linux (4.15.0-15.16) bionic; urgency=medium

* linux: 4.15.0-15.16 -proposed tracker (LP: #1761177)

* FFe: Enable configuring resume offset via sysfs (LP: #1760106)
    - PM / hibernate: Make passing hibernate offsets more friendly

* /dev/bcache/by-uuid links not created after reboot (LP: #1729145)
    - SAUCE: (no-up) bcache: decouple emitting a cached_dev CHANGE uevent

* Ubuntu18.04:POWER9:DD2.2 - Unable to start a KVM guest with default machine
    type(pseries-bionic) complaining "KVM implementation does not support
    Transactional Memory, try cap-htm=off" (kvm) (LP: #1752026)
    - powerpc: Use feature bit for RTC presence rather than timebase presence
    - powerpc: Book E: Remove unused CPU_FTR_L2CSR bit
    - powerpc: Free up CPU feature bits on 64-bit machines
    - powerpc: Add CPU feature bits for TM bug workarounds on POWER9 v2.2
    - powerpc/powernv: Provide a way to force a core into SMT4 mode
    - KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9
    - KVM: PPC: Book3S HV: Work around XER[SO] bug in fake suspend mode
    - KVM: PPC: Book3S HV: Work around TEXASR bug in fake suspend state

* Important Kernel fixes to be backported for Power9 (kvm) (LP: #1758910)
    - powerpc/mm: Fixup tlbie vs store ordering issue on POWER9

* Ubuntu 18.04 - IO Hang on some namespaces when running HTX with 16
    namespaces  (Bolt / NVMe) (LP: #1757497)
    - powerpc/64s: Fix lost pending interrupt due to race causing lost update to
      irq_happened

* fwts-efi-runtime-dkms 18.03.00-0ubuntu1: fwts-efi-runtime-dkms kernel module
    failed to build (LP: #1760876)
    - [Packaging] include the retpoline extractor in the headers

linux (4.15.0-14.15) bionic; urgency=medium

* linux: 4.15.0-14.15 -proposed tracker (LP: #1760678)

* [Bionic] mlx4 ETH - mlnx_qos failed when set some TC to vendor
    (LP: #1758662)
    - net/mlx4_en: Change default QoS settings

* 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

* Bionic update to 4.15.15 stable release (LP: #1760585)
    - net: dsa: Fix dsa_is_user_port() test inversion
    - openvswitch: meter: fix the incorrect calculation of max delta_t
    - qed: Fix MPA unalign flow in case header is split across two packets.
    - tcp: purge write queue upon aborting the connection
    - qed: Fix non TCP packets should be dropped on iWARP ll2 connection
    - sysfs: symlink: export sysfs_create_link_nowarn()
    - net: phy: relax error checking when creating sysfs link netdev->phydev
    - devlink: Remove redundant free on error path
    - macvlan: filter out unsupported feature flags
    - net: ipv6: keep sk status consistent after datagram connect failure
    - ipv6: old_dport should be a __be16 in __ip6_datagram_connect()
    - ipv6: sr: fix NULL pointer dereference when setting encap source address
    - ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
    - mlxsw: spectrum_buffers: Set a minimum quota for CPU port traffic
    - net: phy: Tell caller result of phy_change()
    - ipv6: Reflect MTU changes on PMTU of exceptions for MTU-less routes
    - net sched actions: return explicit error when tunnel_key mode is not
      specified
    - ppp: avoid loop in xmit recursion detection code
    - rhashtable: Fix rhlist duplicates insertion
    - test_rhashtable: add test case for rhltable with duplicate objects
    - kcm: lock lower socket in kcm_attach
    - sch_netem: fix skb leak in netem_enqueue()
    - ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event()
    - net: use skb_to_full_sk() in skb_update_prio()
    - net: Fix hlist corruptions in inet_evict_bucket()
    - s390/qeth: free netdevice when removing a card
    - s390/qeth: when thread completes, wake up all waiters
    - s390/qeth: lock read device while queueing next buffer
    - s390/qeth: on channel error, reject further cmd requests
    - soc/fsl/qbman: fix issue in qman_delete_cgr_safe()
    - dpaa_eth: fix error in dpaa_remove()
    - dpaa_eth: remove duplicate initialization
    - dpaa_eth: increment the RX dropped counter when needed
    - dpaa_eth: remove duplicate increment of the tx_errors counter
    - dccp: check sk for closed state in dccp_sendmsg()
    - ipv6: fix access to non-linear packet in ndisc_fill_redirect_hdr_option()
    - l2tp: do not accept arbitrary sockets
    - net: ethernet: arc: Fix a potential memory leak if an optional regulator is
      deferred
    - net: ethernet: ti: cpsw: add check for in-band mode setting with RGMII PHY
      interface
    - net: fec: Fix unbalanced PM runtime calls
    - net/iucv: Free memory obtained by kzalloc
    - netlink: avoid a double skb free in genlmsg_mcast()
    - net: Only honor ifindex in IP_PKTINFO if non-0
    - net: systemport: Rewrite __bcm_sysport_tx_reclaim()
    - qede: Fix qedr link update
    - skbuff: Fix not waking applications when errors are enqueued
    - team: Fix double free in error path
    - Linux 4.15.15

* Ubuntu 18.04 [ WSP DD2.2 with stop4 and stop5 enabled ]: kdump fails to
    capture dump when smt=2 or off. (LP: #1758206)
    - powerpc/crash: Remove the test for cpu_online in the IPI callback
    - powernv/kdump: Fix cases where the kdump kernel can get HMI's
    - powerpc/kdump: Fix powernv build break when KEXEC_CORE=n

* [Intel Ubuntu 18.04 Bug] Null pointer dereference, when disconnecting RAID
    rebuild target (LP: #1759279)
    - md: document lifetime of internal rdev pointer.

* [Feature]Crystal Ridge:add support for the platform capabilities NFIT sub-
    table in ACPI 6.2A (LP: #1730829)
    - ACPICA: ACPI 6.0A: Changes to the NFIT ACPI table
    - acpi: nfit: Add support for detect platform CPU cache flush on power loss
    - acpi: nfit: add persistent memory control flag for nd_region
    - libnvdimm: expose platform persistence attribute for nd_region
    - libnvdimm: re-enable deep flush for pmem devices via fsync()
    - libnvdimm, nfit: fix persistence domain reporting

* Allow multiple mounts of zfs datasets (LP: #1759848)
    - SAUCE: Allow mounting datasets more than once (LP: #1759848)

* Update Aquantia driver to fix various issues (LP: #1759303)
    - net: aquantia: Eliminate AQ_DIMOF, replace with ARRAY_SIZE
    - net: aquantia: Cleanup status flags accesses
    - net: aquantia: Cleanup hardware access modules
    - net: aquantia: Remove duplicate hardware descriptors declarations
    - net: aquantia: Add const qualifiers for hardware ops tables
    - net: aquantia: Simplify dependencies between pci modules
    - net: aquantia: Eliminate aq_nic structure abstraction
    - net: aquantia: Fix register definitions to linux style
    - net: aquantia: Prepend hw access functions declarations with prefix
    - net: aquantia: Fix internal stats calculation on rx
    - net: aquantia: Introduce new device ids and constants
    - net: aquantia: Introduce new AQC devices and capabilities
    - net: aquantia: Convert hw and caps structures to const static pointers
    - net: aquantia: Cleanup pci functions module
    - net: aquantia: Remove create/destroy from hw ops
    - net: aquantia: Change confusing no_ff_addr to more meaningful name
    - net: aquantia: Introduce firmware ops callbacks
    - net: aquantia: Introduce support for new firmware on AQC cards
    - net: aquantia: Introduce global AQC hardware reset sequence
    - net: aquantia: Report correct mediatype via ethtool
    - net: aquantia: bump driver version to match aquantia internal numbering
    - net: aquantia: Fix hardware reset when SPI may rarely hangup
    - net: aquantia: Fix a regression with reset on old firmware
    - net: aquantia: Change inefficient wait loop on fw data reads
    - net: aquantia: Add tx clean budget and valid budget handling logic
    - net: aquantia: Allow live mac address changes
    - net: aquantia: Implement pci shutdown callback
    - net: aquantia: driver version bump

* ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: cpu hotplug on boslcp3g4 guest
    dumping call traces continuously. (LP: #1759722)
    - blk-mq: turn WARN_ON in __blk_mq_run_hw_queue into printk

* ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle hangs
    after hotplug CPU add operation. (LP: #1759723)
    - genirq/affinity: assign vectors to all possible CPUs
    - blk-mq: simplify queue mapping & schedule with each possisble CPU

* test_bpf fails (LP: #1756150)
    - test_bpf: Fix testing with CONFIG_BPF_JIT_ALWAYS_ON=y on other arches

* Bionic update to v4.15.14 stable release (LP: #1759655)
    - MIPS: ralink: Remove ralink_halt()
    - MIPS: ralink: Fix booting on MT7621
    - MIPS: lantiq: Fix Danube USB clock
    - MIPS: lantiq: Enable AHB Bus for USB
    - MIPS: lantiq: ase: Enable MFD_SYSCON
    - iio: chemical: ccs811: Corrected firmware boot/application mode transition
    - iio: st_pressure: st_accel: pass correct platform data to init
    - iio: adc: meson-saradc: unlock on error in meson_sar_adc_lock()
    - ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
    - ALSA: aloop: Sync stale timer before release
    - ALSA: aloop: Fix access to not-yet-ready substream via cable
    - ALSA: hda - Force polling mode on CFL for fixing codec communication
    - ALSA: hda/realtek - Fix speaker no sound after system resume
    - ALSA: hda/realtek - Fix Dell headset Mic can't record
    - ALSA: hda/realtek - Always immediately update mute LED with pin VREF
    - mmc: core: Fix tracepoint print of blk_addr and blksz
    - mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards
    - mmc: block: fix updating ext_csd caches on ioctl call
    - mmc: dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit systems
    - mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433
    - mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
    - PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
    - ahci: Add PCI-id for the Highpoint Rocketraid 644L card
    - lockdep: fix fs_reclaim warning
    - clk: bcm2835: Fix ana->maskX definitions
    - clk: bcm2835: Protect sections updating shared registers
    - clk: sunxi-ng: a31: Fix CLK_OUT_* clock ops
    - RDMA/mlx5: Fix crash while accessing garbage pointer and freed memory
    - Drivers: hv: vmbus: Fix ring buffer signaling
    - pinctrl: samsung: Validate alias coming from DT
    - Bluetooth: btusb: Remove Yoga 920 from the btusb_needs_reset_resume_table
    - Bluetooth: btusb: Add Dell OptiPlex 3060 to btusb_needs_reset_resume_table
    - Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174
    - libata: fix length validation of ATAPI-relayed SCSI commands
    - libata: remove WARN() for DMA or PIO command without data
    - libata: don't try to pass through NCQ commands to non-NCQ devices
    - libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
    - libata: Enable queued TRIM for Samsung SSD 860
    - libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
    - libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
    - libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
    - sched, cgroup: Don't reject lower cpu.max on ancestors
    - cgroup: fix rule checking for threaded mode switching
    - nfsd: remove blocked locks on client teardown
    - media: tegra-cec: reset rx_buf_cnt when start bit detected
    - hugetlbfs: check for pgoff value overflow
    - h8300: remove extraneous __BIG_ENDIAN definition
    - mm/vmalloc: add interfaces to free unmapped page table
    - x86/mm: implement free pmd/pte page interfaces
    - mm/khugepaged.c: convert VM_BUG_ON() to collapse fail
    - mm/thp: do not wait for lock_page() in deferred_split_scan()
    - mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
    - Revert "mm: page_alloc: skip over regions of invalid pfns where possible"
    - drm/vmwgfx: Fix black screen and device errors when running without fbdev
    - drm/vmwgfx: Fix a destoy-while-held mutex problem.
    - drm/radeon: Don't turn off DP sink when disconnected
    - drm/amd/display: We shouldn't set format_default on plane as atomic driver
    - drm/amd/display: Add one to EDID's audio channel count when passing to DC
    - drm: Reject getfb for multi-plane framebuffers
    - drm: udl: Properly check framebuffer mmap offsets
    - mm/vmscan: wake up flushers for legacy cgroups too
    - module: propagate error in modules_open()
    - acpi, numa: fix pxm to online numa node associations
    - ACPI / watchdog: Fix off-by-one error at resource assignment
    - libnvdimm, {btt, blk}: do integrity setup before add_disk()
    - brcmfmac: fix P2P_DEVICE ethernet address generation
    - rtlwifi: rtl8723be: Fix loss of signal
    - tracing: probeevent: Fix to support minus offset from symbol
    - mtdchar: fix usage of mtd_ooblayout_ecc()
    - mtd: nand: fsl_ifc: Fix nand waitfunc return value
    - mtd: nand: fsl_ifc: Fix eccstat array overflow for IFC ver >= 2.0.0
    - mtd: nand: fsl_ifc: Read ECCSTAT0 and ECCSTAT1 registers for IFC 2.0
    - staging: ncpfs: memory corruption in ncp_read_kernel()
    - can: peak/pcie_fd: fix echo_skb is occupied! bug
    - can: peak/pcie_fd: remove useless code when interface starts
    - can: ifi: Repair the error handling
    - can: ifi: Check core revision upon probe
    - can: cc770: Fix stalls on rt-linux, remove redundant IRQ ack
    - can: cc770: Fix queue stall & dropped RTR reply
    - can: cc770: Fix use after free in cc770_tx_interrupt()
    - tty: vt: fix up tabstops properly
    - x86/entry/64: Don't use IST entry for #BP stack
    - selftests/x86/ptrace_syscall: Fix for yet more glibc interference
    - x86/vsyscall/64: Use proper accessor to update P4D entry
    - x86/efi: Free efi_pgd with free_pages()
    - posix-timers: Protect posix clock array access against speculation
    - kvm/x86: fix icebp instruction handling
    - x86/build/64: Force the linker to use 2MB page size
    - x86/boot/64: Verify alignment of the LOAD segment
    - hwmon: (k10temp) Only apply temperature offset if result is positive
    - hwmon: (k10temp) Add temperature offset for Ryzen 1900X
    - perf/x86/intel/uncore: Fix Skylake UPI event format
    - perf stat: Fix CVS output format for non-supported counters
    - perf/core: Fix ctx_event_type in ctx_resched()
    - trace/bpf: remove helper bpf_perf_prog_read_value from tracepoint type
      programs
    - perf/x86/intel: Don't accidentally clear high bits in bdw_limit_period()
    - perf/x86/intel/uncore: Fix multi-domain PCI CHA enumeration bug on Skylake
      servers
    - iio: ABI: Fix name of timestamp sysfs file
    - iio: imu: st_lsm6dsx: fix endianness in st_lsm6dsx_read_oneshot()
    - iio: imu: st_lsm6dsx: introduce conf_lock mutex
    - staging: android: ion: Zero CMA allocated memory
    - kbuild: disable clang's default use of -fmerge-all-constants
    - bpf: skip unnecessary capability check
    - bpf, x64: increase number of passes
    - Linux 4.15.14

* System fails to start (boot) on battery due to read-only root file-system
    (LP: #1726930) // Bionic update to v4.15.14 stable release (LP: #1759655)
    - libata: disable LPM for Crucial BX100 SSD 500GB drive

* [Feature][CFL][ICL] [CNL]Thunderbolt support (Titan Ridge) (LP: #1730775)
    - thunderbolt: Resume control channel after hibernation image is created
    - thunderbolt: Serialize PCIe tunnel creation with PCI rescan
    - thunderbolt: Handle connecting device in place of host properly
    - thunderbolt: Do not overwrite error code when domain adding fails
    - thunderbolt: Wait a bit longer for root switch config space
    - thunderbolt: Wait a bit longer for ICM to authenticate the active NVM
    - thunderbolt: Handle rejected Thunderbolt devices
    - thunderbolt: Factor common ICM add and update operations out
    - thunderbolt: Correct function name in kernel-doc comment
    - thunderbolt: Add tb_switch_get()
    - thunderbolt: Add tb_switch_find_by_route()
    - thunderbolt: Add tb_xdomain_find_by_route()
    - thunderbolt: Add constant for approval timeout
    - thunderbolt: Move driver ready handling to struct icm
    - thunderbolt: Add 'boot' attribute for devices
    - thunderbolt: Add support for preboot ACL
    - Documentation/admin-guide: fixes for thunderbolt.rst
    - thunderbolt: Introduce USB only (SL4) security level
    - thunderbolt: Add support for Intel Titan Ridge

* QCA9377 requires more IRAM banks for its new firmware (LP: #1748345)
    - ath10k: update the IRAM bank number for QCA9377

* nfp: fix disabling on hw-tc-offload in flower (LP: #1752828)
    - nfp: bpf: require ETH table
    - nfp: don't advertise hw-tc-offload on non-port netdevs
    - nfp: forbid disabling hw-tc-offload on representors while offload active

* 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

* retpoline hints: primary infrastructure and initial hints (LP: #1758856)
    - [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
    - SAUCE: apm -- annotate indirect calls within
      firmware_restrict_branch_speculation_{start,end}
    - SAUCE: EFI -- annotate indirect calls within
      firmware_restrict_branch_speculation_{start,end}
    - SAUCE: early/late -- annotate indirect calls in early/late initialisation
      code
    - SAUCE: vga_set_mode -- avoid jump tables
    - [Config] retpoine -- switch to new format

* zfs system process hung on container stop/delete (LP: #1754584)
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)
    - Revert "UBUNTU: SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)"
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)

* Important KVM fixes for ppc64el (LP: #1759045)
    - KVM: PPC: Book3S HV: Do SLB load/unload with guest LPCR value loaded
    - KVM: PPC: Book3S HV: Fix handling of secondary HPTEG in HPT resizing code
    - KVM: PPC: Book3S HV: Make HPT resizing work on POWER9
    - KVM: PPC: Book3S: Add MMIO emulation for VMX instructions
    - KVM: PPC: Book3S: Fix compile error that occurs with some gcc versions
    - KVM: PPC: Book3S HV: Fix trap number return from __kvmppc_vcore_entry
    - KVM: PPC: Book3S HV: Fix duplication of host SLB entries

* ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64
    (LP: #1755073)
    - SAUCE: crypto: thunderx_zip: Fix fallout from CONFIG_VMAP_STACK

* Update to ocxl driver (LP: #1755161)
    - ocxl: fix signed comparison with less than zero
    - ocxl: Fix potential bad errno on irq allocation
    - ocxl: Add get_metadata IOCTL to share OCXL information to userspace

* CAPI Flash (cxlflash) update (LP: #1752672)
    - scsi: cxlflash: Update cxl-specific arguments to generic cookie
    - scsi: cxlflash: Explicitly cache number of interrupts per context
    - scsi: cxlflash: Remove embedded CXL work structures
    - scsi: cxlflash: Adapter context init can return error
    - scsi: cxlflash: Staging to support future accelerators
    - SAUCE: cxlflash: Preserve number of interrupts for master contexts
    - SAUCE: cxlflash: Avoid clobbering context control register value
    - SAUCE: cxlflash: Add argument identifier names
    - SAUCE: cxlflash: Introduce OCXL backend
    - SAUCE: cxlflash: Hardware AFU for OCXL
    - SAUCE: cxlflash: Read host function configuration
    - SAUCE: cxlflash: Setup function acTag range
    - SAUCE: cxlflash: Read host AFU configuration
    - SAUCE: cxlflash: Setup AFU acTag range
    - SAUCE: cxlflash: Setup AFU PASID
    - SAUCE: cxlflash: Adapter context support for OCXL
    - SAUCE: cxlflash: Use IDR to manage adapter contexts
    - SAUCE: cxlflash: Support adapter file descriptors for OCXL
    - SAUCE: cxlflash: Support adapter context discovery
    - SAUCE: cxlflash: Support image reload policy modification
    - SAUCE: cxlflash: MMIO map the AFU
    - SAUCE: cxlflash: Support starting an adapter context
    - SAUCE: cxlflash: Support process specific mappings
    - SAUCE: cxlflash: Support AFU state toggling
    - SAUCE: cxlflash: Support reading adapter VPD data
    - SAUCE: cxlflash: Setup function OCXL link
    - SAUCE: cxlflash: Setup OCXL transaction layer
    - SAUCE: cxlflash: Support process element lifecycle
    - SAUCE: cxlflash: Support AFU interrupt management
    - SAUCE: cxlflash: Support AFU interrupt mapping and registration
    - SAUCE: cxlflash: Support starting user contexts
    - SAUCE: cxlflash: Support adapter context polling
    - SAUCE: cxlflash: Support adapter context reading
    - SAUCE: cxlflash: Support adapter context mmap and release
    - SAUCE: cxlflash: Support file descriptor mapping
    - SAUCE: cxlflash: Introduce object handle fop
    - SAUCE: cxlflash: Setup LISNs for user contexts
    - SAUCE: cxlflash: Setup LISNs for master contexts
    - SAUCE: cxlflash: Update synchronous interrupt status bits
    - SAUCE: cxlflash: Introduce OCXL context state machine
    - SAUCE: cxlflash: Register for translation errors
    - SAUCE: cxlflash: Support AFU reset
    - SAUCE: cxlflash: Enable OCXL operations

* [Feature][CFL] Enable pmc_core driver for H, S, and U SKUs (LP: #1730770)
    - platform/x86: intel_pmc_core: Remove unused EXPORTED API
    - platform/x86: intel_pmc_core: Change driver to a module
    - platform/x86: intel_pmc_core: Fix file permission warnings
    - platform/x86: intel_pmc_core: Refactor debugfs entries
    - platform/x86: intel_pmc_core: Substitute PCI with CPUID enumeration
    - platform/x86: intel_pmc_core: Convert to ICPU macro
    - platform/x86: intel_pmc_core: Remove unused header file
    - ACPI / LPIT: Export lpit_read_residency_count_address()
    - platform/x86: intel_pmc_core: Read base address from LPIT
    - x86/cpu: Add Cannonlake to Intel family
    - platform/x86: intel_pmc_core: Add CannonLake PCH support
    - platform/x86: intel_pmc_core: Special case for Coffeelake

* 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

* [Artful][Wyse 3040] System hang when trying to enable an offlined CPU core
    (LP: #1736393)
    - SAUCE: drm/i915:Don't set chip specific data
    - SAUCE: drm/i915: make previous commit affects Wyse 3040 only

* [Bug] ISH support for CFL-H (LP: #1739522)
    - HID: intel-ish-hid: Enable Cannon Lake and Coffee Lake laptop/desktop

* ath9k can't connect to wifi AP (LP: #1727228)
    - ath9k: add MSI support
    - ath9k: add a quirk to set use_msi automatically

* [P9,Power NV][Witherspoon][Ubuntu 18.04][Perf] : PMU events by name it is
    not listed under perf list (LP: #1755470)
    - iperf vendor events: Use more flexible pattern matching for CPU
      identification for mapfile.csv

* zed process consuming 100% cpu (LP: #1751796)
    - SAUCE: Fix ioctl loop-spin in zed (LP: #1751796)

* Bionic update to 4.15.13 stable release (LP: #1758886)
    - scsi: megaraid_sas: Do not use 32-bit atomic request descriptor for Ventura
      controllers
    - staging: android: ashmem: Fix possible deadlock in ashmem_ioctl
    - drm/amdgpu: use polling mem to set SDMA3 wptr for VF
    - Bluetooth: hci_qca: Avoid setup failure on missing rampatch
    - Bluetooth: btqcomsmd: Fix skb double free corruption
    - cpufreq: longhaul: Revert transition_delay_us to 200 ms
    - media: c8sectpfe: fix potential NULL pointer dereference in
      c8sectpfe_timer_interrupt
    - drm/msm: fix leak in failed get_pages
    - IB/ipoib: Warn when one port fails to initialize
    - RDMA/iwpm: Fix uninitialized error code in iwpm_send_mapinfo()
    - hv_netvsc: Fix the receive buffer size limit
    - hv_netvsc: Fix the TX/RX buffer default sizes
    - tcp: allow TLP in ECN CWR
    - spi: sh-msiof: Avoid writing to registers from spi_master.setup()
    - libbpf: prefer global symbols as bpf program name source
    - rtlwifi: rtl_pci: Fix the bug when inactiveps is enabled.
    - rtlwifi: always initialize variables given to RT_TRACE()
    - media: bt8xx: Fix err 'bt878_probe()'
    - ath10k: handling qos at STA side based on AP WMM enable/disable
    - media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
    - qmi_wwan: set FLAG_SEND_ZLP to avoid network initiated disconnect
    - tty: goldfish: Enable 'earlycon' only if built-in
    - serial: 8250_dw: Disable clock on error
    - cros_ec: fix nul-termination for firmware build info
    - watchdog: Fix potential kref imbalance when opening watchdog
    - watchdog: Fix kref imbalance seen if handle_boot_enabled=0
    - platform/chrome: Use proper protocol transfer function
    - dmaengine: zynqmp_dma: Fix race condition in the probe
    - drm/tilcdc: ensure nonatomic iowrite64 is not used
    - mmc: avoid removing non-removable hosts during suspend
    - mmc: block: fix logical error to avoid memory leak
    - /dev/mem: Add bounce buffer for copy-out
    - net: phy: meson-gxl: check phy_write return value
    - sfp: fix EEPROM reading in the case of non-SFF8472 SFPs
    - sfp: fix non-detection of PHY
    - media: s5p-mfc: Fix lock contention - request_firmware() once
    - rtc: ac100: Fix multiple race conditions
    - IB/ipoib: Avoid memory leak if the SA returns a different DGID
    - RDMA/cma: Use correct size when writing netlink stats
    - IB/umem: Fix use of npages/nmap fields
    - iser-target: avoid reinitializing rdma contexts for isert commands
    - bpf/cgroup: fix a verification error for a CGROUP_DEVICE type prog
    - vgacon: Set VGA struct resource types
    - omapdrm: panel: fix compatible vendor string for td028ttec1
    - mmc: sdhci-xenon: wait 5ms after set 1.8V signal enable
    - drm/omap: DMM: Check for DMM readiness after successful transaction commit
    - pty: cancel pty slave port buf's work in tty_release
    - coresight: Fix disabling of CoreSight TPIU
    - PCI: designware-ep: Fix ->get_msi() to check MSI_EN bit
    - PCI: endpoint: Fix find_first_zero_bit() usage
    - PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures
    - media: davinci: fix a debug printk
    - clk: check ops pointer on clock register
    - dt-bindings: display: panel: Fix compatible string for Toshiba LT089AC29000
    - clk: use round rate to bail out early in set_rate
    - pinctrl: Really force states during suspend/resume
    - pinctrl: rockchip: enable clock when reading pin direction register
    - iommu/vt-d: clean up pr_irq if request_threaded_irq fails
    - ip6_vti: adjust vti mtu according to mtu of lower device
    - ip_gre: fix error path when erspan_rcv failed
    - ip_gre: fix potential memory leak in erspan_rcv
    - soc: qcom: smsm: fix child-node lookup
    - RDMA/ocrdma: Fix permissions for OCRDMA_RESET_STATS
    - ARM: dts: aspeed-evb: Add unit name to memory node
    - nfsd4: permit layoutget of executable-only files
    - clk: at91: pmc: Wait for clocks when resuming
    - clk: Don't touch hardware when reparenting during registration
    - clk: axi-clkgen: Correctly handle nocount bit in recalc_rate()
    - clk: si5351: Rename internal plls to avoid name collisions
    - crypto: artpec6 - set correct iv size for gcm(aes)
    - hwrng: core - Clean up RNG list when last hwrng is unregistered
    - dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63
    - IB/mlx5: Fix integer overflows in mlx5_ib_create_srq
    - IB/mlx5: Fix out-of-bounds read in create_raw_packet_qp_rq
    - RDMA/vmw_pvrdma: Fix usage of user response structures in ABI file
    - serial: 8250_pci: Don't fail on multiport card class
    - RDMA/core: Do not use invalid destination in determining port reuse
    - clk: migrate the count of orphaned clocks at init
    - RDMA/ucma: Fix access to non-initialized CM_ID object
    - RDMA/ucma: Don't allow join attempts for unsupported AF family
    - Linux 4.15.13

* Ubuntu18.04:PowerPC - Set Transparent Huge Pages (THP) by default to
    "always" (LP: #1753708)
    - Config: Set TRANSPARENT_HUGEPAGE_ALWAYS=y on ppc64el

* Bionic update to 4.15.12 stable release (LP: #1757465)
    - x86/cpufeatures: Add Intel Total Memory Encryption cpufeature
    - x86/cpufeatures: Add Intel PCONFIG cpufeature
    - selftests/x86/entry_from_vm86: Exit with 1 if we fail
    - selftests/x86/entry_from_vm86: Add test cases for POPF
    - x86/vm86/32: Fix POPF emulation
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool on
      32-bit kernels
    - x86/speculation: Remove Skylake C2 from Speculation Control microcode
      blacklist
    - KVM: x86: Fix device passthrough when SME is active
    - x86/mm: Fix vmalloc_fault to use pXd_large
    - parisc: Handle case where flush_cache_range is called with no context
    - ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats()
    - ALSA: hda - Revert power_save option default value
    - ALSA: seq: Fix possible UAF in snd_seq_check_queue()
    - ALSA: seq: Clear client entry before deleting else at closing
    - drm/nouveau/bl: Fix oops on driver unbind
    - drm/nouveau/mmu: ALIGN_DOWN correct variable
    - drm/amdgpu: fix prime teardown order
    - drm/radeon: fix prime teardown order
    - drm/amdgpu/dce: Don't turn off DP sink when disconnected
    - fs: Teach path_connected to handle nfs filesystems with multiple roots.
    - KVM: arm/arm64: Reduce verbosity of KVM init log
    - KVM: arm/arm64: Reset mapped IRQs on VM reset
    - kvm: arm/arm64: vgic-v3: Tighten synchronization for guests using v2 on v3
    - KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid
    - lock_parent() needs to recheck if dentry got __dentry_kill'ed under it
    - fs/aio: Add explicit RCU grace period when freeing kioctx
    - fs/aio: Use RCU accessors for kioctx_table->table[]
    - RDMAVT: Fix synchronization around percpu_ref
    - irqchip/gic-v3-its: Ensure nr_ites >= nr_lpis
    - nvme: fix subsystem multiple controllers support check
    - xfs: preserve i_rdev when recycling a reclaimable inode
    - btrfs: Fix NULL pointer exception in find_bio_stripe
    - btrfs: add missing initialization in btrfs_check_shared
    - btrfs: alloc_chunk: fix DUP stripe size handling
    - btrfs: Fix use-after-free when cleaning up fs_devs with a single stale
      device
    - btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes
    - btrfs: Fix memory barriers usage with device stats counters
    - scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que
    - scsi: qla2xxx: Fix NULL pointer access for fcport structure
    - scsi: qla2xxx: Fix logo flag for qlt_free_session_done()
    - scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failure
    - usb: dwc2: fix STM32F7 USB OTG HS compatible
    - dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding
    - USB: gadget: udc: Add missing platform_device_put() on error in
      bdc_pci_probe()
    - usb: dwc3: Fix GDBGFIFOSPACE_TYPE values
    - usb: dwc3: core: Power-off core/PHYs on system_suspend in host mode
    - usb: dwc3: of-simple: fix oops by unbalanced clk disable call
    - usb: gadget: udc: renesas_usb3: fix oops in renesas_usb3_remove()
    - phy: phy-brcm-usb: Fix two DT properties to match bindings doc
    - phy: phy-brcm-usb-init: Some Low Speed keyboards fail on 7271
    - phy: phy-brcm-usb-init: DRD mode can cause crash on startup
    - phy: phy-brcm-usb-init: Power down USB 3.0 PHY when XHCI disabled
    - Linux 4.15.12

* cxl: Fix timebase synchronization status on POWER9 missing (CAPI)
    (LP: #1757228)
    - cxl: Fix timebase synchronization status on P9

* [Feature][GLK] Enable L2 CDP (Code and Data Prioritization) (LP: #1737873)
    - x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature
    - x86/intel_rdt: Add command line parameter to control L2_CDP

* [Feature] Crystal Ridge-Restrict DAX to configurations with struct page
    (LP: #1751724)
    - mm, dax: introduce pfn_t_special()
    - ext2: auto disable dax instead of failing mount
    - ext4: auto disable dax instead of failing mount
    - dax: require 'struct page' by default for filesystem dax
    - Config: Enable CONFIG_FS_DAX_LIMITED

* Bionic update to 4.15.11 stable release (LP: #1756978)
    - x86: Treat R_X86_64_PLT32 as R_X86_64_PC32
    - ASoC: sun4i-i2s: Fix RX slot number of SUN8I
    - ASoC: sgtl5000: Fix suspend/resume
    - ASoC: wm_adsp: For TLV controls only register TLV get/set
    - ASoC: rt5651: Fix regcache sync errors on resume
    - usb: host: xhci-rcar: add support for r8a77965
    - xhci: Fix front USB ports on ASUS PRIME B350M-A
    - xhci: fix endpoint context tracer output
    - serial: sh-sci: prevent lockup on full TTY buffers
    - tty/serial: atmel: add new version check for usart
    - uas: fix comparison for error code
    - staging: comedi: fix comedi_nsamples_left.
    - staging: android: ashmem: Fix lockdep issue during llseek
    - scsi: sd_zbc: Fix potential memory leak
    - USB: storage: Add JMicron bridge 152d:2567 to unusual_devs.h
    - usbip: vudc: fix null pointer dereference on udc->lock
    - usb: quirks: add control message delay for 1b1c:1b20
    - usb: usbmon: Read text within supplied buffer size
    - usb: gadget: f_fs: Fix use-after-free in ffs_fs_kill_sb()
    - usb: dwc3: Fix lock-up on ID change during system suspend/resume
    - serial: 8250_pci: Add Brainboxes UC-260 4 port serial device
    - serial: core: mark port as initialized in autoconfig
    - earlycon: add reg-offset to physical address before mapping
    - dm mpath: fix passing integrity data
    - Revert "btrfs: use proper endianness accessors for super_copy"
    - gfs2: Clean up {lookup,fillup}_metapath
    - gfs2: Fixes to "Implement iomap for block_map" (2)
    - drm/panel: rpi-touchscreen: propagate errors in rpi_touchscreen_i2c_read()
    - spi: imx: Fix failure path leak on GPIO request error correctly
    - HID: multitouch: Only look at non touch fields in first packet of a frame
    - KVM: PPC: Book3S HV: Avoid shifts by negative amounts
    - drm/edid: set ELD connector type in drm_edid_to_eld()
    - dma-buf/fence: Fix lock inversion within dma-fence-array
    - video/hdmi: Allow "empty" HDMI infoframes
    - KVM: PPC: Book3S HV: Fix typo in kvmppc_hv_get_dirty_log_radix()
    - HID: elo: clear BTN_LEFT mapping
    - iwlwifi: mvm: rs: don't override the rate history in the search cycle
    - ARM: dts: koelsch: Move cec_clock to root node
    - clk: meson: gxbb: fix wrong clock for SARADC/SANA
    - ARM: dts: exynos: Correct Trats2 panel reset line
    - drm/amdgpu: fix get_max_engine_clock_in_mhz
    - staging: rtl8822be: fix missing null check on dev_alloc_skb return
    - typec: tcpm: fusb302: Resolve out of order messaging events
    - USB: ledtrig-usbport: fix of-node leak
    - dt-bindings: serial: Add common rs485 binding for RTS polarity
    - sched: Stop switched_to_rt() from sending IPIs to offline CPUs
    - sched: Stop resched_cpu() from sending IPIs to offline CPUs
    - crypto: chelsio - Fix an error code in chcr_hash_dma_map()
    - crypto: ecc - Fix NULL pointer deref. on no default_rng
    - crypto: keywrap - Add missing ULL suffixes for 64-bit constants
    - crypto: cavium - fix memory leak on info
    - test_firmware: fix setting old custom fw path back on exit
    - drm/vblank: Fix vblank timestamp debugs
    - net: ieee802154: adf7242: Fix bug if defined DEBUG
    - rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()
    - perf report: Fix -D output for user metadata events
    - net: xfrm: allow clearing socket xfrm policies.
    - gpiolib: don't allow OPEN_DRAIN & OPEN_SOURCE flags simultaneously
    - mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]()
    - net: thunderx: Set max queue count taking XDP_TX into account
    - ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin
    - ARM: dts: omap3-n900: Fix the audio CODEC's reset pin
    - mtd: nand: ifc: update bufnum mask for ver >= 2.0.0
    - userns: Don't fail follow_automount based on s_user_ns
    - xfrm: Fix xfrm_replay_overflow_offload_esn
    - leds: pm8058: Silence pointer to integer size warning
    - bpf: fix stack state printing in verifier log
    - power: supply: sbs-message: double left shift bug in sbsm_select()
    - power: supply: ab8500_charger: Fix an error handling path
    - power: supply: ab8500_charger: Bail out in case of error in
      'ab8500_charger_init_hw_registers()'
    - drm/etnaviv: make THERMAL selectable
    - iio: adc: ina2xx: Shift bus voltage register to mask flag bits
    - iio: health: max30102: Add power enable parameter to get_temp function
    - ath10k: update tdls teardown state to target
    - cpufreq: Fix governor module removal race
    - KVM: X86: Restart the guest when insn_len is zero and SEV is enabled
    - drm/amdgpu:fix random missing of FLR NOTIFY
    - scsi: ses: don't ask for diagnostic pages repeatedly during probe
    - pwm: stmpe: Fix wrong register offset for hwpwm=2 case
    - drm/sun4i: Fix format mask in DE2 driver
    - pinctrl: sh-pfc: r8a7791: Add can_clk function
    - pinctrl: sh-pfc: r8a7795-es1: Fix MOD_SEL1 bit[25:24] to 0x3 when using
      STP_ISEN_1_D
    - perf annotate: Fix unnecessary memory allocation for s390x
    - perf annotate: Fix objdump comment parsing for Intel mov dissassembly
    - iwlwifi: mvm: avoid dumping assert log when device is stopped
    - drm/amdgpu:fix virtual dce bug
    - drm/amdgpu: fix amdgpu_sync_resv v2
    - bnxt_en: Uninitialized variable in bnxt_tc_parse_actions()
    - clk: qcom: msm8916: fix mnd_width for codec_digcodec
    - mwifiex: cfg80211: do not change virtual interface during scan processing
    - ath10k: fix invalid STS_CAP_OFFSET_MASK
    - tools/usbip: fixes build with musl libc toolchain
    - spi: sun6i: disable/unprepare clocks on remove
    - bnxt_en: Don't print "Link speed -1 no longer supported" messages.
    - scsi: core: scsi_get_device_flags_keyed(): Always return device flags
    - scsi: devinfo: apply to HP XP the same flags as Hitachi VSP
    - scsi: dh: add new rdac devices
    - clk: renesas: r8a77970: Add LVDS clock
    - staging: fsl-dpaa2/eth: Fix access to FAS field
    - media: vsp1: Prevent suspending and resuming DRM pipelines
    - dm raid: fix raid set size revalidation
    - media: cpia2: Fix a couple off by one bugs
    - media: davinci: vpif_capture: add NULL check on devm_kzalloc return value
    - virtio_net: Disable interrupts if napi_complete_done rescheduled napi
    - net: sched: drop qdisc_reset from dev_graft_qdisc
    - veth: set peer GSO values
    - drm/amdkfd: Fix memory leaks in kfd topology
    - powerpc/64: Don't trace irqs-off at interrupt return to soft-disabled
      context
    - arm64: dts: renesas: salvator-common: Add EthernetAVB PHY reset
    - agp/intel: Flush all chipset writes after updating the GGTT
    - mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
    - mac80211: remove BUG() when interface type is invalid
    - crypto: caam/qi - use correct print specifier for size_t
    - ASoC: nuc900: Fix a loop timeout test
    - mmc: mmc_test: Ensure command queue is disabled for testing
    - Fix misannotated out-of-line _copy_to_user()
    - ipvlan: add L2 check for packets arriving via virtual devices
    - rcutorture/configinit: Fix build directory error message
    - locking/locktorture: Fix num reader/writer corner cases
    - ima: relax requiring a file signature for new files with zero length
    - IB/mlx5: revisit -Wmaybe-uninitialized warning
    - dmaengine: qcom_hidma: check pending interrupts
    - drm/i915/glk: Disable Guc and HuC on GLK
    - Linux 4.15.11
    - Config: Enable CONFIG_DRM_ETNAVIV_THERMAL=y

* [FFE][Feature] KVM CLX avx512_vnni (LP: #1739665)
    - KVM: x86: add support for UMIP
    - KVM: Expose new cpu features to guest

* Ubuntu18.04[P9 DD2.2 Boston]:Unable to boot power8 compat mode
    guests(ubuntu14.04.5) (kvm) (LP: #1756254)
    - KVM: PPC: Book3S HV: Allow HPT and radix on the same core for POWER9 v2.2

* Allow hugepage backing for "p8compat" mode kvm guests (LP: #1754206)
    - KVM: PPC: Book3S HV: Fix VRMA initialization with 2MB or 1GB memory backing

* [Bug][KVM][Crystal Ridge] Terrible performance of vNVDIMM on QEMU with
    device DAX backend (LP: #1745899)
    - x86/mm: add a function to check if a pfn is UC/UC-/WC
    - KVM: MMU: consider host cache mode in MMIO page check

* nfp: read ME frequency from vNIC ctrl memory (LP: #1752818)
    - nfp: add TLV capabilities to the BAR
    - nfp: read ME frequency from vNIC ctrl memory
    - nfp: fix TLV offset calculation

* Miscellaneous Ubuntu changes
    - [Packaging] skip cloud tools packaging when not building package
    - [Packaging] final-checks -- remove check for empty retpoline files

-- Seth Forshee <seth.forshee@canonical.com>  Wed, 04 Apr 2018 08:26:19 -0500

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

Manoj Iyer (manjo) on 2018-04-23

Changed in ubuntu-power-systems:
status:	Fix Committed → Fix Released

Ubuntu
linux package

Ubuntu 18.04 [ WSP DD2.2 with stop4 and stop5 enabled ]: kdump fails to capture dump when smt=2 or off.

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	Status	Importance	Assigned to
The Ubuntu-power-systems project	Fix Released	High	Canonical Kernel Team
linux (Ubuntu)	Fix Released	High	Joseph Salisbury
Bionic	Fix Released	High	Joseph Salisbury

Ubuntulinux package

Ubuntu 18.04 [ WSP DD2.2 with stop4 and stop5 enabled ]: kdump fails to capture dump when smt=2 or off.

Bug Description

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Ubuntu
linux package