Ubuntu
linux package

ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: cpu hotplug on boslcp3g4 guest dumping call traces continuously.

Bug #1759722 reported by bugproxy on 2018-03-29

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	The Ubuntu-power-systems project	Fix Released	Medium	Canonical Kernel Team
	linux (Ubuntu)	Fix Released	Undecided	Ubuntu on IBM Power Systems Bug Triage

Bug Description

Problem Description:
===================
After performing HOTPLUG CPU on guest boslcp3g4 , saw dumping messages on the guest console continously

Steps to re-create:
==================

> boslcp3g4 is a guest of Boston LC system "boslcp3". Both of these systems are installed with ubuntu1804 kernel.

root@boslcp3:/home# uname -a
Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux
root@boslcp3:/home# uname -r
4.15.0-12-generic

root@boslcp3g4:/kte/tools/setup.d# uname -a
Linux boslcp3g4 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux
root@boslcp3g4:/kte/tools/setup.d# uname -r
4.15.0-12-generic

> When I perform hotplug of the cpu , it was successful but throwing these call traces in the Guest console continuously-

root@boslcp3:~# virsh setvcpus boslcp3g4 64 --live

root@boslcp3g4:~# [22273.371233] Using 'aes-generic' as fallback implementation.
[22273.371377] Using 'ctr(aes-generic)' as fallback implementation.
[22273.450867] Using 'aes-generic' as fallback implementation.
[22273.450967] Using 'ctr(aes-generic)' as fallback implementation.
[22300.779703] Using 'aes-generic' as fallback implementation.
[22300.779810] Using 'ctr(aes-generic)' as fallback implementation.
[22300.789192] Using 'aes-generic' as fallback implementation.
[22300.789327] Using 'ctr(aes-generic)' as fallback implementation.
[22327.714322] Using 'aes-generic' as fallback implementation.
[22327.714423] Using 'ctr(aes-generic)' as fallback implementation.
[22327.722548] Using 'aes-generic' as fallback implementation.
[22327.722654] Using 'ctr(aes-generic)' as fallback implementation.
[22354.401415] Using 'aes-generic' as fallback implementation.
[22354.401546] Using 'ctr(aes-generic)' as fallback implementation.
[22354.422227] Using 'aes-generic' as fallback implementation.
[22354.422354] Using 'ctr(aes-generic)' as fallback implementation.
[22368.150663] WARNING: CPU: 34 PID: 40114 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.153463] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.154166] CPU: 34 PID: 40114 Comm: kworker/34:0H Not tainted 4.15.0-12-generic #13+leo20180320
[22368.154241] Workqueue: kblockd blk_mq_run_work_fn
[22368.154283] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.154344] REGS: c000000145a2f9d0 TRAP: 0700 Not tainted (4.15.0-12-generic)
[22368.154402] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.154480] CFAR: c00000000068e070 SOFTE: 1
[22368.154480] GPR00: c000000000131538 c000000145a2fc50 c0000000016eaf00 c0000001346f7800
[22368.154480] GPR04: c0000001346f7880 0000000000000000 0000000000000000 c000000001721ed8
[22368.154480] GPR08: 0000000000000000 0000000000000001 0000000000000000 c000000145985d30
[22368.154480] GPR12: c00000000068e140 c00000000fa97600 c00000000013a368 c0000001760c35c0
[22368.154480] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.154480] GPR20: c00000017ee78180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.154480] GPR24: 0000000000000402 0000000000000000 c00000017ee78500 0000000000000000
[22368.154480] GPR28: c0000001346f7880 c00000017ee7c900 c00000017ee78180 c0000001346f7800
[22368.155001] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.155065] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.155115] Call Trace:
[22368.155139] [c000000145a2fc50] [c000000145a2fce0] 0xc000000145a2fce0 (unreliable)
[22368.155200] [c000000145a2fc90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.155259] [c000000145a2fd20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.155308] [c000000145a2fdc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.155358] [c000000145a2fe30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.155415] Instruction dump:
[22368.155446] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.155506] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.155566] ---[ end trace 70e3c0daa532c721 ]---
[22368.204754] WARNING: CPU: 34 PID: 40224 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.204856] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.205275] CPU: 34 PID: 40224 Comm: kworker/34:1H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.205352] Workqueue: kblockd blk_mq_run_work_fn
[22368.205392] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.205449] REGS: c00000017ac8b9d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.205513] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44002284 XER: 00000000
[22368.205588] CFAR: c00000000068e070 SOFTE: 1
[22368.205588] GPR00: c000000000131538 c00000017ac8bc50 c0000000016eaf00 c0000001346f7800
[22368.205588] GPR04: c0000001346f7880 0000000000000000 0000000044008282 c000000001721ed8
[22368.205588] GPR08: 0000000000000000 0000000000000001 0000000000000000 00000000ffffffff
[22368.205588] GPR12: c00000000068e140 c00000000fa97600 c00000000013a368 c000000179360000
[22368.205588] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.205588] GPR20: c00000017ee78180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.205588] GPR24: 0000000000000402 0000000000000000 c00000017ee78500 0000000000000000
[22368.205588] GPR28: c0000001346f7880 c00000017ee7c900 c00000017ee78180 c0000001346f7800
[22368.206068] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.206118] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.206165] Call Trace:
[22368.206263] [c00000017ac8bc90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.206322] [c00000017ac8bd20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.206373] [c00000017ac8bdc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.206424] [c00000017ac8be30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.206480] Instruction dump:
[22368.206511] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.206588] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.206662] ---[ end trace 70e3c0daa532c722 ]---
[22368.340886] WARNING: workqueue cpumask: online intersect > possible intersect
[22368.378115] WARNING: CPU: 36 PID: 40286 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.378224] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.378684] CPU: 36 PID: 40286 Comm: kworker/36:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.378762] Workqueue: kblockd blk_mq_run_work_fn
[22368.378801] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.378859] REGS: c00000017ace79d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.378942] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.379015] CFAR: c00000000068e070 SOFTE: 1
[22368.379015] GPR00: c000000000131538 c00000017ace7c50 c0000000016eaf00 c000000142f0fc00
[22368.379015] GPR04: c000000142f0fc80 0000000000000000 0000000000000000 c000000001721ed8
[22368.379015] GPR08: 0000000000000000 0000000000000001 0000000000000000 c0000001788e2930
[22368.379015] GPR12: c00000000068e140 c00000000fa98c00 c00000000013a368 c0000001760c2400
[22368.379015] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.379015] GPR20: c00000017eef8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.379015] GPR24: 0000000000000402 0000000000000000 c00000017eef8500 0000000000000000
[22368.379015] GPR28: c000000142f0fc80 c00000017eefc900 c00000017eef8180 c000000142f0fc00
[22368.379497] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.379547] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.379594] Call Trace:
[22368.379617] [c00000017ace7c50] [c00000017ace7ce0] 0xc00000017ace7ce0 (unreliable)
[22368.379678] [c00000017ace7c90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.379739] [c00000017ace7d20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.379790] [c00000017ace7dc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.379842] [c00000017ace7e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.379907] Instruction dump:
[22368.379938] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.380005] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.380070] ---[ end trace 70e3c0daa532c723 ]---
[22368.488613] WARNING: CPU: 39 PID: 40552 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.488724] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.489289] CPU: 39 PID: 40552 Comm: kworker/39:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.489367] Workqueue: kblockd blk_mq_run_work_fn
[22368.489409] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.489467] REGS: c00000017285b9d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.489532] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.489605] CFAR: c00000000068e070 SOFTE: 1
[22368.489605] GPR00: c000000000131538 c00000017285bc50 c0000000016eaf00 c0000001346f7800
[22368.489605] GPR04: c0000001346f7880 0000000000000000 0000000000000000 c000000001721ed8
[22368.489605] GPR08: 0000000000000000 0000000000000001 0000000000000000 c000000142ca9c30
[22368.489605] GPR12: c00000000068e140 c00000000fa9ad00 c00000000013a368 c0000001760c9e40
[22368.489605] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.489605] GPR20: c00000017efb8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.489605] GPR24: 0000000000000402 0000000000000000 c00000017efb8500 0000000000000000
[22368.489605] GPR28: c0000001346f7880 c00000017efbc900 c00000017efb8180 c0000001346f7800
[22368.490093] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.490144] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.490191] Call Trace:
[22368.490213] [c00000017285bc50] [c00000017285bce0] 0xc00000017285bce0 (unreliable)
[22368.490272] [c00000017285bc90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.490330] [c00000017285bd20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.490379] [c00000017285bdc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.490431] [c00000017285be30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.490487] Instruction dump:
[22368.490517] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.490576] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.490636] ---[ end trace 70e3c0daa532c724 ]---
[22368.522251] WARNING: CPU: 39 PID: 41050 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.522353] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.522772] CPU: 39 PID: 41050 Comm: kworker/39:1H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.522851] Workqueue: kblockd blk_mq_run_work_fn
[22368.522890] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.522962] REGS: c0000000e95e39d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.523029] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44002884 XER: 00000000
[22368.523103] CFAR: c00000000068e070 SOFTE: 1
[22368.523103] GPR00: c000000000131538 c0000000e95e3c50 c0000000016eaf00 c0000001346f7800
[22368.523103] GPR04: c0000001346f7880 0000000000000000 0000000044008882 c000000001721ed8
[22368.523103] GPR08: 0000000000000000 0000000000000001 0000000000000000 00000000ffffffff
[22368.523103] GPR12: c00000000068e140 c00000000fa9ad00 c00000000013a368 c000000261facac0
[22368.523103] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.523103] GPR20: c00000017efb8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.523103] GPR24: 0000000000000402 0000000000000000 c00000017efb8500 0000000000000000
[22368.523103] GPR28: c0000001346f7880 c00000017efbc900 c00000017efb8180 c0000001346f7800
[22368.523584] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.523635] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.523682] Call Trace:
[22368.523704] [c0000000e95e3c90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.523761] [c0000000e95e3d20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.523811] [c0000000e95e3dc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.523862] [c0000000e95e3e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.523919] Instruction dump:
[22368.523948] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.524009] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.524068] ---[ end trace 70e3c0daa532c725 ]---
[22368.525105] WARNING: CPU: 38 PID: 40474 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.525198] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.525604] CPU: 38 PID: 40474 Comm: kworker/38:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.525692] Workqueue: kblockd blk_mq_run_work_fn
[22368.525736] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.525800] REGS: c00000017282f9d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.525869] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.525944] CFAR: c00000000068e070 SOFTE: 1
[22368.525944] GPR00: c000000000131538 c00000017282fc50 c0000000016eaf00 c000000142f0fc00
[22368.525944] GPR04: c000000142f0fc80 0000000000000000 0000000000000000 c000000001721ed8
[22368.525944] GPR08: 0000000000000000 0000000000000001 0000000000000000 c000000142ca5730
[22368.525944] GPR12: c00000000068e140 c00000000fa9a200 c00000000013a368 c0000001760c4040
[22368.525944] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.525944] GPR20: c00000017ef78180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.525944] GPR24: 0000000000000402 0000000000000000 c00000017ef78500 0000000000000000
[22368.525944] GPR28: c000000142f0fc80 c00000017ef7c900 c00000017ef78180 c000000142f0fc00
[22368.526428] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.526477] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.526524] Call Trace:
[22368.526546] [c00000017282fc50] [c00000017282fce0] 0xc00000017282fce0 (unreliable)
[22368.526604] [c00000017282fc90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.526662] [c00000017282fd20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.526711] [c00000017282fdc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.526761] [c00000017282fe30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.526818] Instruction dump:
[22368.526849] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.526908] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.526984] ---[ end trace 70e3c0daa532c726 ]---
[22368.829929] WARNING: CPU: 32 PID: 39931 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.830040] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.830473] CPU: 32 PID: 39931 Comm: kworker/32:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.830588] Workqueue: kblockd blk_mq_run_work_fn
[22368.830629] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.830688] REGS: c0000001789779d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.830754] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.830830] CFAR: c00000000068e070 SOFTE: 1
[22368.830830] GPR00: c000000000131538 c000000178977c50 c0000000016eaf00 c0000001346f7800
[22368.830830] GPR04: c0000001346f7880 0000000000000000 0000000000000000 c000000001721ed8
[22368.830830] GPR08: 0000000000000000 0000000000000001 0000000000000000 c0000001727a5730
[22368.830830] GPR12: c00000000068e140 c00000000fa96000 c00000000013a368 c0000001760ca940
[22368.830830] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.830830] GPR20: c00000017edf8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.830830] GPR24: 0000000000000402 0000000000000000 c00000017edf8500 0000000000000000
[22368.830830] GPR28: c0000001346f7880 c00000017edfc900 c00000017edf8180 c0000001346f7800
[22368.831330] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.831383] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.831472] Call Trace:
[22368.831495] [c000000178977c50] [c000000178977ce0] 0xc000000178977ce0 (unreliable)
[22368.831554] [c000000178977c90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.831612] [c000000178977d20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.831662] [c000000178977dc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.831714] [c000000178977e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.831773] Instruction dump:
[22368.831803] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.831863] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.831924] ---[ end trace 70e3c0daa532c727 ]---
[22368.831972] WARNING: CPU: 32 PID: 39931 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.832047] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.832450] CPU: 32 PID: 39931 Comm: kworker/32:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.832527] Workqueue: kblockd blk_mq_run_work_fn
[22368.832565] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.832624] REGS: c0000001789779d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.832690] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.832761] CFAR: c00000000068e070 SOFTE: 1
[22368.832761] GPR00: c000000000131538 c000000178977c50 c0000000016eaf00 c0000001346f7800
[22368.832761] GPR04: c0000001346f7880 0000000000000000 0000000000000000 c000000001721ed8
[22368.832761] GPR08: 0000000000000000 0000000000000001 0000000000000000 c0000001727a5730
[22368.832761] GPR12: c00000000068e140 c00000000fa96000 c00000000013a368 c0000001760ca940
[22368.832761] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.832761] GPR20: c00000017edf8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.832761] GPR24: 0000000000000402 0000000000000000 c00000017edf8500 0000000000000000
[22368.832761] GPR28: c0000001346f7880 c00000017edfc900 c00000017edf8180 c0000001346f7800
[22368.833253] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.833302] LR [c000000000131538] process_one_work+0x298/0x5a0
[22368.833351] Call Trace:
[22368.833371] [c000000178977c50] [c000000178977c90] 0xc000000178977c90 (unreliable)
[22368.833429] [c000000178977c90] [c000000000131538] process_one_work+0x298/0x5a0
[22368.833488] [c000000178977d20] [c0000000001318d8] worker_thread+0x98/0x630
[22368.833537] [c000000178977dc0] [c00000000013a508] kthread+0x1a8/0x1b0
[22368.833587] [c000000178977e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
[22368.833642] Instruction dump:
[22368.833673] 7fa4eb78 7fc3f378 4bb10611 60000000 eba10028 ebc10030 38210040 e8010010
[22368.833732] ebe1fff8 7c0803a6 4e800020 60420000 <0fe00000> 78290464 8129000c 552902ef
[22368.833792] ---[ end trace 70e3c0daa532c728 ]---
[22368.913232] WARNING: CPU: 35 PID: 40184 at /home/user/ubuntu-bionic/block/blk-mq.c:1211 __blk_mq_run_hw_queue+0xf0/0x140
[22368.913335] Modules linked in: sctp esp4 xfrm4_mode_transport ccm xfrm_user xfrm_algo minix nls_iso8859_1 xfs rpcsec_gss_krb5 nfsv4 nfs fscache binfmt_misc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua vmx_crypto sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp nfsd libiscsi scsi_transport_iscsi auth_rpcgss parport_pc nfs_acl ppdev lockd grace sunrpc lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_vpmsum crc32c_vpmsum virtio_blk virtio_scsi virtio_net
[22368.913750] CPU: 35 PID: 40184 Comm: kworker/35:0H Tainted: G W 4.15.0-12-generic #13+leo20180320
[22368.913830] Workqueue: kblockd blk_mq_run_work_fn
[22368.913869] NIP: c00000000068e0f0 LR: c000000000131538 CTR: c00000000068e140
[22368.913928] REGS: c00000017acc79d0 TRAP: 0700 Tainted: G W (4.15.0-12-generic)
[22368.913996] MSR: 800000000282b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 42002424 XER: 00000000
[22368.914070] CFAR: c00000000068e070 SOFTE: 1
[22368.914070] GPR00: c000000000131538 c00000017acc7c50 c0000000016eaf00 c000000142f0fc00
[22368.914070] GPR04: c000000142f0fc80 0000000000000000 0000000000000000 c000000001721ed8
[22368.914070] GPR08: 0000000000000000 0000000000000001 0000000000000000 c000000172428530
[22368.914070] GPR12: c00000000068e140 c00000000fa98100 c00000000013a368 c0000001760c2ac0
[22368.914070] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[22368.914070] GPR20: c00000017eeb8180 0000000000000000 0000000000000000 fffffffffffffef7
[22368.914070] GPR24: 0000000000000402 0000000000000000 c00000017eeb8500 0000000000000000
[22368.914070] GPR28: c000000142f0fc80 c00000017eebc900 c00000017eeb8180 c000000142f0fc00
[22368.914583] NIP [c00000000068e0f0] __blk_mq_run_hw_queue+0xf0/0x140
[22368.914635] LR [c000000000131538] process_one_work+0x298/0x5a0
[

> virsh dumpxml boslcp3g4

root@boslcp3:~# virsh dumpxml boslcp3g4 | grep vcpu
  <vcpu placement='static' current='64'>80</vcpu>
  <vcpus>
    <vcpu id='0' enabled='yes' hotpluggable='no' order='1'/>
    <vcpu id='1' enabled='yes' hotpluggable='no' order='1'/>
    <vcpu id='2' enabled='yes' hotpluggable='no' order='1'/>
    <vcpu id='3' enabled='yes' hotpluggable='no' order='1'/>
    <vcpu id='4' enabled='yes' hotpluggable='no' order='2'/>
    <vcpu id='5' enabled='yes' hotpluggable='no' order='2'/>
    <vcpu id='6' enabled='yes' hotpluggable='no' order='2'/>
    <vcpu id='7' enabled='yes' hotpluggable='no' order='2'/>
    <vcpu id='8' enabled='yes' hotpluggable='no' order='3'/>
    <vcpu id='9' enabled='yes' hotpluggable='no' order='3'/>
    <vcpu id='10' enabled='yes' hotpluggable='no' order='3'/>
    <vcpu id='11' enabled='yes' hotpluggable='no' order='3'/>
    <vcpu id='12' enabled='yes' hotpluggable='no' order='4'/>
    <vcpu id='13' enabled='yes' hotpluggable='no' order='4'/>
    <vcpu id='14' enabled='yes' hotpluggable='no' order='4'/>
    <vcpu id='15' enabled='yes' hotpluggable='no' order='4'/>
    <vcpu id='16' enabled='yes' hotpluggable='no' order='5'/>
    <vcpu id='17' enabled='yes' hotpluggable='no' order='5'/>
    <vcpu id='18' enabled='yes' hotpluggable='no' order='5'/>
    <vcpu id='19' enabled='yes' hotpluggable='no' order='5'/>
    <vcpu id='20' enabled='yes' hotpluggable='no' order='6'/>
    <vcpu id='21' enabled='yes' hotpluggable='no' order='6'/>
    <vcpu id='22' enabled='yes' hotpluggable='no' order='6'/>
    <vcpu id='23' enabled='yes' hotpluggable='no' order='6'/>
    <vcpu id='24' enabled='yes' hotpluggable='no' order='7'/>
    <vcpu id='25' enabled='yes' hotpluggable='no' order='7'/>
    <vcpu id='26' enabled='yes' hotpluggable='no' order='7'/>
    <vcpu id='27' enabled='yes' hotpluggable='no' order='7'/>
    <vcpu id='28' enabled='yes' hotpluggable='no' order='8'/>
    <vcpu id='29' enabled='yes' hotpluggable='no' order='8'/>
    <vcpu id='30' enabled='yes' hotpluggable='no' order='8'/>
    <vcpu id='31' enabled='yes' hotpluggable='no' order='8'/>
    <vcpu id='32' enabled='yes' hotpluggable='yes' order='9'/>
    <vcpu id='33' enabled='yes' hotpluggable='yes' order='9'/>
    <vcpu id='34' enabled='yes' hotpluggable='yes' order='9'/>
    <vcpu id='35' enabled='yes' hotpluggable='yes' order='9'/>
    <vcpu id='36' enabled='yes' hotpluggable='yes' order='10'/>
    <vcpu id='37' enabled='yes' hotpluggable='yes' order='10'/>
    <vcpu id='38' enabled='yes' hotpluggable='yes' order='10'/>
    <vcpu id='39' enabled='yes' hotpluggable='yes' order='10'/>
    <vcpu id='40' enabled='yes' hotpluggable='yes' order='11'/>
    <vcpu id='41' enabled='yes' hotpluggable='yes' order='11'/>
    <vcpu id='42' enabled='yes' hotpluggable='yes' order='11'/>
    <vcpu id='43' enabled='yes' hotpluggable='yes' order='11'/>
    <vcpu id='44' enabled='yes' hotpluggable='yes' order='12'/>
    <vcpu id='45' enabled='yes' hotpluggable='yes' order='12'/>
    <vcpu id='46' enabled='yes' hotpluggable='yes' order='12'/>
    <vcpu id='47' enabled='yes' hotpluggable='yes' order='12'/>
    <vcpu id='48' enabled='yes' hotpluggable='yes' order='13'/>
    <vcpu id='49' enabled='yes' hotpluggable='yes' order='13'/>
    <vcpu id='50' enabled='yes' hotpluggable='yes' order='13'/>
    <vcpu id='51' enabled='yes' hotpluggable='yes' order='13'/>
    <vcpu id='52' enabled='yes' hotpluggable='yes' order='14'/>
    <vcpu id='53' enabled='yes' hotpluggable='yes' order='14'/>
    <vcpu id='54' enabled='yes' hotpluggable='yes' order='14'/>
    <vcpu id='55' enabled='yes' hotpluggable='yes' order='14'/>
    <vcpu id='56' enabled='yes' hotpluggable='yes' order='15'/>
    <vcpu id='57' enabled='yes' hotpluggable='yes' order='15'/>
    <vcpu id='58' enabled='yes' hotpluggable='yes' order='15'/>
    <vcpu id='59' enabled='yes' hotpluggable='yes' order='15'/>
    <vcpu id='60' enabled='yes' hotpluggable='yes' order='16'/>
    <vcpu id='61' enabled='yes' hotpluggable='yes' order='16'/>
    <vcpu id='62' enabled='yes' hotpluggable='yes' order='16'/>
    <vcpu id='63' enabled='yes' hotpluggable='yes' order='16'/>
    <vcpu id='64' enabled='no' hotpluggable='yes'/>
    <vcpu id='65' enabled='no' hotpluggable='yes'/>
    <vcpu id='66' enabled='no' hotpluggable='yes'/>
    <vcpu id='67' enabled='no' hotpluggable='yes'/>
    <vcpu id='68' enabled='no' hotpluggable='yes'/>
    <vcpu id='69' enabled='no' hotpluggable='yes'/>
    <vcpu id='70' enabled='no' hotpluggable='yes'/>
    <vcpu id='71' enabled='no' hotpluggable='yes'/>
    <vcpu id='72' enabled='no' hotpluggable='yes'/>
    <vcpu id='73' enabled='no' hotpluggable='yes'/>
    <vcpu id='74' enabled='no' hotpluggable='yes'/>
    <vcpu id='75' enabled='no' hotpluggable='yes'/>
    <vcpu id='76' enabled='no' hotpluggable='yes'/>
    <vcpu id='77' enabled='no' hotpluggable='yes'/>
    <vcpu id='78' enabled='no' hotpluggable='yes'/>
    <vcpu id='79' enabled='no' hotpluggable='yes'/>
  </vcpus>
root@boslcp3:~#

> lspcu output from guest

root@boslcp3g4:~# lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 64
On-line CPU(s) list: 0,4,8,12,16,20,24,28,32-63
Off-line CPU(s) list: 1-3,5-7,9-11,13-15,17-19,21-23,25-27,29-31
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 2
NUMA node(s): 2
Model: 2.2 (pvr 004e 1202)
Model name: POWER9 (architected), altivec supported
Hypervisor vendor: KVM
Virtualization type: para
L1d cache: 32K
L1i cache: 32K
NUMA node0 CPU(s): 0,4,8,12,16,20,24,28,32-39
NUMA node1 CPU(s): 40-63
root@boslcp3g4:~#

> Attched guest consoel logs

Hi, there is a patch to remove the WARNING message but it's harmless according to the patch author:

4058ba173eb411422482125e14e7bb12b70c8b38

blk-mq: turn WARN_ON in __blk_mq_run_hw_queue into printk

We know this WARN_ON is harmless and in reality it may be trigged,
so convert it to printk() and dump_stack() to avoid to confusing
people.

I'll prepare a backport to Canonical but I lowering this importance to medium, since it's not a problem.

Thank you

Tags:

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-29: hotplug CPU dump messages from boslcp3g4

hotplug CPU dump messages from boslcp3g4 Edit (59.3 KiB, text/plain)

Default Comment by Bridge

tags:

added: architecture-ppc64le bugnameltc-165971 severity-medium targetmilestone-inin1804

Revision history for this message

bugproxy (bugproxy) wrote on 2018-03-29: dmesg message logs during hotplug cpu

dmesg message logs during hotplug cpu Edit (280.5 KiB, application/octet-stream)

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 2018-03-29

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

Seth Forshee (sforshee) on 2018-03-29

Changed in linux (Ubuntu):
status:	New → Fix Committed

Frank Heimes (fheimes) on 2018-03-29

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

Revision history for this message

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

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

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

* 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):
status:	Fix Committed → Fix Released

Frank Heimes (fheimes) on 2018-04-14

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

Brad Figg (brad-figg) on 2019-07-24

tags:

added: cscc

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ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: cpu hotplug on boslcp3g4 guest dumping call traces continuously.

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