** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)
** Changed in: ubuntu-power-systems
Importance: Undecided => Critical
** Tags added: triage-g
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https://bugs.launchpad.net/bugs/1733864
Title:
kernel 4.10.0-40 is hanging with a CPU soft lock
Status in The Ubuntu-power-systems project:
New
Status in linux package in Ubuntu:
New
Bug description:
Kernel 4.10.0-40-generic is causing CPU hung on POWER machines. I got
this problem on a POWER8 KVM virtual machine
[ 1912.003255] NMI watchdog: BUG: soft lockup - CPU#12 stuck for 24s!
[dpkg-deb:31284]
[ 1912.004496] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs msdos jfs
xfs ipt_REJECT nf_reject_ipv4 xfrm_user xfrm_algo xt_addrtype xt_conntrack
br_netfilter ebtable_filter ebtables ip6table_filter ip6_tables ib_srpt
dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio tcm_qla2xxx qla2xxx
vhost_scsi vhost usb_f_tcm tcm_usb_gadget libcomposite udc_core tcm_fc libfc
scsi_transport_fc tcm_loop iscsi_target_mod target_core_file target_core_iblock
target_core_pscsi target_core_mod ipmi_devintf ipmi_msghandler xt_CHECKSUM
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat xt_tcpudp
iptable_filter ip_tables x_tables openvswitch nf_conntrack_ipv6 nf_nat_ipv6
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_defrag_ipv6 nf_nat nf_conntrack
binfmt_misc zfs(PO) zunicode(PO) zavl(PO) zcommon(PO)
[ 1912.004575] znvpair(PO) spl(O) bridge 8021q garp mrp stp llc vmx_crypto
kvm ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0
multipath linear ibmvscsi ibmveth crc32c_vpmsum virtio_blk
[ 1912.004624] CPU: 12 PID: 31284 Comm: dpkg-deb Tainted: P O
4.10.0-40-generic #44~16.04.1-Ubuntu
[ 1912.004626] task: c000000775551e00 task.stack: c0000007755ac000
[ 1912.004627] NIP: 00003fff86b71960 LR: 00003fff86b7319c CTR:
000000000000002d
[ 1912.004628] REGS: c0000007755afea0 TRAP: 0901 Tainted: P O
(4.10.0-40-generic)
[ 1912.004629] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>
[ 1912.004635] CR: 42004442 XER: 20000000
[ 1912.004636] CFAR: 00003fff86b719b4 SOFTE: 1
GPR00: 00000000000000a4 00003fffd53f7d70 00003fff86ba5008
0000000000000040
GPR04: 00000000038a20fc 00003fff86467d4b 00000000036c0ed8
000000000000002a
GPR08: 00003fff81c41010 00000000000a20f5 0000000000800001
ffffffffffec0ed1
GPR12: 00000000000000a6 00003fff86c8db30
[ 1912.004646] NIP [00003fff86b71960] 0x3fff86b71960
[ 1912.004647] LR [00003fff86b7319c] 0x3fff86b7319c
[ 1912.004647] Call Trace:
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