Comment # 3 on bug 1106005 from Markus Zimmermann

This might be triggerd by a CronJob that is running on Monday 00:0x. Also, one
of the VMs of the server is down first. So this might be triggered by that VM
which is running some docker containers on LEAP 15 with no special packages.
Nontheless this takes down the whole hypervisor because it marks all RAIDs as
read-only bringing down the whole server with its VMs. I cannot Google anything
of the trace so I guess that this is again a kernel bug I am triggering that is
unique to SUSE.

[591655.627253] ------------[ cut here ]------------
[591655.627255] print_req_error: I/O error, dev nvme1n1, sector 67227176
[591655.627261] device-mapper: multipath: Failing path 259:0.
[591655.627422] WARNING: CPU: 7 PID: 573 at ../drivers/nvme/host/core.c:571
nvme_setup_cmd+0x3dd/0x430 [nvme_core]
[591655.627423] print_req_error: I/O error, dev dm-1, sector 67227176
[591655.627537] Modules linked in: vhost_net vhost tap xt_CHECKSUM
iptable_mangle ipt_REJECT tun devlink ebtable_filter ebtables af_packet joydev
iscsi_ibft iscsi_boot_sysfs nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter
ip6_tables ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat iptable_nat nf_nat_ipv4
nf_nat xt_physdev br_netfilter bridge stp llc xt_tcpudp nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c iptable_filter ip_tables
x_tables hid_generic usbhid intel_rapl x86_pkg_temp_thermal intel_powerclamp
coretemp kvm_intel iTCO_wdt kvm iTCO_vendor_support ppdev mei_wdt irqbypass
i2c_i801 pcspkr shpchp mei_me mei intel_pch_thermal ie31200_edac wmi parport_pc
parport video acpi_pad button raid1 md_mod dm_service_time scsi_transport_iscsi
crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel
[591655.627573]  pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd
xhci_pci e1000e nvme xhci_hcd ptp serio_raw pps_core ahci nvme_core libahci
usbcore sunrpc dm_mirror dm_region_hash dm_log sg dm_multipath dm_mod
scsi_dh_rdac scsi_dh_emc scsi_dh_alua
[591655.627589] CPU: 7 PID: 573 Comm: kdmwork-254:0 Not tainted
4.12.14-lp150.12.16-default #1 openSUSE Leap 15.0
[591655.627590] Hardware name: FUJITSU /D3417-B2, BIOS V5.0.0.12 R1.8.0.SR.1
for D3417-B2x                05/16/2017
[591655.627591] task: ffff880fe0510000 task.stack: ffffc90006edc000
[591655.627594] RIP: 0010:nvme_setup_cmd+0x3dd/0x430 [nvme_core]
[591655.627595] RSP: 0018:ffffc90006edfca0 EFLAGS: 00010202
[591655.627597] RAX: 0000000000000000 RBX: ffffc90006edfd38 RCX:
0000000000000000
[591655.627598] RDX: 0000000000000002 RSI: ffff880fa2346a40 RDI:
000000000401ce28
[591655.627599] RBP: ffff880fddd02c00 R08: ffff880fa2346a40 R09:
0000000000003df8
[591655.627600] R10: ffff880fe0a0a440 R11: 000000000000006c R12:
ffff880fed90c000
[591655.627601] R13: 0000000000000001 R14: 0000000000000001 R15:
ffff880fddd02c00
[591655.627602] FS:  0000000000000000(0000) GS:ffff88102e5c0000(0000)
knlGS:0000000000000000
[591655.627604] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[591655.627605] CR2: 00007f503eebc000 CR3: 000000000200a001 CR4:
00000000003626e0
[591655.627606] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[591655.627607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[591655.627607] Call Trace:
[591655.627614]  ? blk_mq_run_hw_queue+0x10/0x10
[591655.627616]  nvme_queue_rq+0x52/0xbc0 [nvme]
[591655.627620]  ? kmem_cache_alloc+0xea/0x510
[591655.627623]  ? __sbitmap_queue_get+0x24/0x90
[591655.627625]  ? wait_woken+0x80/0x80
[591655.627628]  ? mempool_alloc+0x55/0x160
[591655.627630]  ? blk_mq_run_hw_queue+0x10/0x10
[591655.627632]  blk_mq_dispatch_rq_list+0x194/0x300
[591655.627636]  blk_mq_sched_dispatch_requests+0x11c/0x1d0
[591655.627638]  __blk_mq_delay_run_hw_queue+0x73/0x80
[591655.627641]  blk_insert_cloned_request+0x9a/0x1e0
[591655.627647]  map_request+0xc1/0x1d0 [dm_mod]
[591655.627650]  ? kthread_create_worker_on_cpu+0x50/0x50
[591655.627655]  map_tio_request+0x12/0x30 [dm_mod]
[591655.627657]  kthread_worker_fn+0xe5/0x190
[591655.627660]  kthread+0x11a/0x130
[591655.627662]  ? kthread_create_on_node+0x40/0x40
[591655.627665]  ? do_syscall_64+0x7b/0x150
[591655.627668]  ? SyS_exit_group+0x10/0x10
[591655.627670]  ret_from_fork+0x1f/0x40
[591655.627672] Code: 5b 89 c8 83 ce 10 c1 e0 10 09 c2 83 f9 04 0f 87 b1 fe ff
ff 8b 45 58 48 8b 7d 30 c1 e8 09 48 01 84 cf 20 08 00 00 e9 9a fe ff ff <0f> 0b
4c 89 c7 41 bd 0a 00 00 00 e8 f3 b6 f9 e0 e9 9d fc ff ff 
[591655.627702] ---[ end trace e1d58069ee3b2e0b ]---