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-- Problem Description --
Kernel OOPS during DLPAR operation with Fibre Channel adapter
 
---uname output---
4.1.0-1-generic
 
---Additional Hardware Info---
Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03) 
 
Machine Type = POWER8 
  
---Steps to Reproduce---
1) Install Ubuntu 15.10 on a Power VM LPAR.
2) Configure and start rtas_errd daemon
3) Via HMC try to add a Fibre channel adapter via dynamic partitioning
 During the operation following OOPS message is observed

Oops output:

 !!! 00E0806 Fcode, Copyright (c) 2000-2012 Emulex !!!  Version 3.10x2


!!! 00E0806 Fcode, Copyright (c) 2000-2012 Emulex !!!  Version 3.10x2
[ 8696.808703] PCI host bridge /pci@800000020000020  ranges:
[ 8696.808708]  MEM 0x0003ff8400000000..0x0003ff847effffff -> 0x0000000080000000 
[ 8696.808716] PCI: I/O resource not set for host bridge /pci@800000020000020 (domain 1)
[ 8696.808761] PCI host bridge to bus 0001:01
[ 8696.808765] pci_bus 0001:01: root bus resource [mem 0x3ff8400000000-0x3ff847effffff] (bus address [0x80000000-0xfeffffff])
[ 8696.808768] pci_bus 0001:01: root bus resource [bus 01-ff]
[ 8696.897390] rpaphp: Slot [U78C7.001.RCH0042-P1-C8] registered
[ 8696.897395] rpadlpar_io: slot PHB 32 added
[ 8696.972155] Emulex LightPulse Fibre Channel SCSI driver 10.5.0.0.
[ 8696.972157] Copyright(c) 2004-2015 Emulex.  All rights reserved.
[ 8696.972438] lpfc 0001:01:00.1: enabling device (0140 -> 0142)
[ 8696.976145] Unable to handle kernel paging request for data at address 0x0000000c
[ 8696.976174] Faulting instruction address: 0xc000000000084cc4
[ 8696.976182] Oops: Kernel access of bad area, sig: 11 [#1]
[ 8696.976188] SMP NR_CPUS=2048 NUMA pSeries
[ 8696.976196] Modules linked in: lpfc(+) scsi_transport_fc rpadlpar_io rpaphp rtc_generic pseries_rng autofs4
[ 8696.976220] CPU: 3 PID: 1426 Comm: systemd-udevd Not tainted 4.1.0-1-generic #1~dogfoodv1-Ubuntu
[ 8696.976230] task: c0000003857737e0 ti: c0000000fd08c000 task.ti: c0000000fd08c000
[ 8696.976239] NIP: c000000000084cc4 LR: c000000000084ca8 CTR: 0000000000000000
[ 8696.976247] REGS: c0000000fd08f0f0 TRAP: 0300   Not tainted  (4.1.0-1-generic)
[ 8696.976255] MSR: 8000000100009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 82228888  XER: 20000000
[ 8696.976278] CFAR: c000000000008468 DAR: 000000000000000c DSISR: 40000000 SOFTE: 1 
               GPR00: c000000000084ca8 c0000000fd08f370 c0000000014bda00 0000000000000000 
               GPR04: 0000000000000001 c0000000fd08f408 0000000000000003 d000000002c31e60 
               GPR08: c0000000013bda00 0000000000000000 c0000003873e6b80 d000000002ca7c98 
               GPR12: 0000000000008800 c00000000e831b00 d0000000029421f8 00003ffff8ca4522 
               GPR16: c0000000fd08fdc0 c0000000fd08fe04 d000000002941878 c0000000fc8054c0 
               GPR20: d000000002380000 d000000002380000 d000000002ccff90 0000000000000000 
               GPR24: c00000000165074c c00000038e17e000 c0000000013b5e00 c00000038e17e000 
               GPR28: c0000000013b5e28 c00000000a590600 c0000000013b5df0 c0000000013b5e20 
[ 8696.976396] NIP [c000000000084cc4] enable_ddw+0x254/0x7b0
[ 8696.976405] LR [c000000000084ca8] enable_ddw+0x238/0x7b0
[ 8696.976411] Call Trace:
[ 8696.976419] [c0000000fd08f370] [c000000000084ca8] enable_ddw+0x238/0x7b0 (unreliable)
[ 8696.976431] [c0000000fd08f4b0] [c0000000000866d8] dma_set_mask_pSeriesLP+0x218/0x2a0
[ 8696.976444] [c0000000fd08f540] [c000000000023528] dma_set_mask+0x58/0xa0
[ 8696.976474] [c0000000fd08f570] [d000000002c71280] lpfc_pci_probe_one+0xb0/0xc50 [lpfc]
[ 8696.976486] [c0000000fd08f610] [c0000000005987fc] local_pci_probe+0x6c/0x140
[ 8696.976497] [c0000000fd08f6a0] [c000000000598a28] pci_device_probe+0x158/0x1e0
[ 8696.976510] [c0000000fd08f700] [c00000000067b744] driver_probe_device+0x1c4/0x5a0
[ 8696.976522] [c0000000fd08f790] [c00000000067bcdc] __driver_attach+0x11c/0x120
[ 8696.976533] [c0000000fd08f7d0] [c00000000067854c] bus_for_each_dev+0x9c/0x110
[ 8696.976544] [c0000000fd08f820] [c00000000067adbc] driver_attach+0x3c/0x60
[ 8696.976555] [c0000000fd08f850] [c00000000067a768] bus_add_driver+0x208/0x320
[ 8696.976565] [c0000000fd08f8e0] [c00000000067c99c] driver_register+0x9c/0x180
[ 8696.976576] [c0000000fd08f950] [c0000000005978ec] __pci_register_driver+0x6c/0x90
[ 8696.976604] [c0000000fd08f990] [d000000002ca7848] lpfc_init+0x17c/0x1d8 [lpfc]
[ 8696.976617] [c0000000fd08fa20] [c00000000000b42c] do_one_initcall+0x12c/0x280
[ 8696.976628] [c0000000fd08faf0] [c000000000a6c7c8] do_init_module+0x98/0x238
[ 8696.976640] [c0000000fd08fb80] [c000000000163fa4] load_module+0x1354/0x14d0
[ 8696.976651] [c0000000fd08fd50] [c0000000001643d0] SyS_finit_module+0xc0/0x120
[ 8696.976662] [c0000000fd08fe30] [c0000000000091fc] system_call+0x38/0xb4
[ 8696.976669] Instruction dump:
[ 8696.976675] 7fa3eb78 38842388 38a10090 38c00003 488345a5 60000000 2fa30000 409e0170 
[ 8696.976694] 2fb90000 419e0438 ea7902f0 e93902e8 <83e9000c> 81490008 2f9f0000 7bff0020 
[ 8696.976716] ---[ end trace c6f99bed0288dc0c ]---

The DLPAR operation completes successfully. lspci does display following
information after this operation

# lspci
0001:01:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
0001:01:00.1 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
#

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: architecture-ppc64le bot-comment bugnameltc-127497 severity-critical targetmilestone-inin1510
-- 
Kernel OOPS during DLPAR operation with Fibre Channel adapter
https://bugs.launchpad.net/bugs/1486180
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