[powerpc] 5.9.0-rc1 boot failure on POWER9 PowerVM LPAR

[Sachin Sant]

5.9.0-rc1 fails to boot on POWER9 PowerVM LPAR with following message

[  OK  ] Started Create Static Device Nodes in /dev.
            Starting udev Kernel Device Manager...
[  OK  ] Started udev Kernel Device Manager.
BUG: Kernel NULL pointer dereference on read at 0x00000188
Faulting instruction address: 0xc0000000005417e0
Oops: Kernel access of bad area, sig: 11 [#1]
LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
Modules linked in: papr_scm(+) uio_pdrv_genirq uio sch_fq_codel ip_tables sd_mod t10_pi ibmvscsi scsi_transport_srp ibmveth
CPU: 14 PID: 7 Comm: kworker/u32:0 Not tainted 5.9.0-rc1-00085-g06a4ec1d9dc6 #1
Workqueue: events_unbound async_run_entry_fn
NIP:  c0000000005417e0 LR: c000000000541784 CTR: c000000000871e30
REGS: c00000067871b710 TRAP: 0300   Not tainted  (5.9.0-rc1-00085-g06a4ec1d9dc6)
MSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 24822484  XER: 00000000
CFAR: c00000000054178c DAR: 0000000000000188 DSISR: 40000000 IRQMASK: 0 
GPR00: c000000000541784 c00000067871b9a0 c00000000173cb00 0000000000000000 
GPR04: c000000000f9eb50 0000000000000002 0000000000000001 c000000678689000 
GPR08: c000000000d45e20 0000000000000180 0000000000000001 0000000000000220 
GPR12: c000000000871e30 c00000001ec5ba00 c00000000017ba18 c000000678220e00 
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
GPR20: 0000000000000000 0000000000000000 fffffffffffffef7 ffffffffffffee4b 
GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000003 
GPR28: c0000000037eb018 c00000000166f9e8 c00000066992dd80 c000000000d45f00 
NIP [c0000000005417e0] internal_create_group+0x180/0x4e0
LR [c000000000541784] internal_create_group+0x124/0x4e0
Call Trace:
[c00000067871b9a0] [c000000000541784] internal_create_group+0x124/0x4e0 (unreliable)
[c00000067871ba60] [c000000000541d70] internal_create_groups.part.4+0x70/0x120
[c00000067871bab0] [c0000000008293d0] device_add+0x470/0x970
[c00000067871bb70] [c00000000086f028] nd_async_device_register+0x28/0xa0
[c00000067871bbe0] [c000000000180fec] async_run_entry_fn+0x7c/0x220
[c00000067871bc70] [c000000000170f20] process_one_work+0x260/0x510
[c00000067871bd10] [c000000000171258] worker_thread+0x88/0x5e0
[c00000067871bdb0] [c00000000017bbb4] kthread+0x1a4/0x1b0
[c00000067871be20] [c00000000000d3d0] ret_from_kernel_thread+0x5c/0x6c
Instruction dump:
7f07c378 38a00000 7fc3f378 4bffe47d 60000000 7c7a1b79 40820218 e93d0009 
3b7b0001 7f7b07b4 2fa90000 419e0024 <a3490008> 4192ff7c e8890000 38a00000 
---[ end trace c238dab2fca3582d ]---

Kernel panic - not syncing: Fatal exception

Have attached config

thanks
-Sachin

-------------- next part --------------
A non-text attachment was scrubbed...
Name: config-5.9.0-rc1
Type: application/octet-stream
Size: 156957 bytes
Desc: not available
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20200818/46414a84/attachment-0001.obj>