Subject: [Oops][next-20170614] powerpc boot fails with WARNING: CPU: 12 PID: 0 at mm/memblock.c

From: Abdul Haleem <[email-masked]>
Date: Thu, 15 Jun 2017 11:30:37 +0530

Hi,

linux-next fails to boot on powerpc Bare-metal with these warnings.

machine booted fine on next-20170613

Test: Boot
Machine type: Power8 Bare-metal
Kernel : 4.12.0-rc5-next-20170614
config: attached 

Trace logs:
-----------
 numa:   NODE_DATA [mem 0x3fff50a300-0x3fff513fff]
 numa:     NODE_DATA(0) on node 256
 Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead
 ------------[ cut here ]------------
 WARNING: CPU: 30 PID: 0 at mm/memblock.c:1289
memblock_virt_alloc_internal+0x94/0x204
 Modules linked in:
 CPU: 30 PID: 0 Comm: swapper Not tainted
4.12.0-rc5-next-20170614-autotest #1
 task: c000000000f20d00 task.stack: c000000001068000
 NIP: c000000000c47614 LR: c000000000c47610 CTR: 0000000030036a88
 REGS: c00000000106b8e0 TRAP: 0700   Not tainted
(4.12.0-rc5-next-20170614-autotest)
 MSR: 9000000000021033 <SF,HV,ME,IR,DR,RI,LE>
   CR: 24042222  XER: 20000000
 CFAR: c00000000024e028 SOFTE: 0
 GPR00: c000000000c47610 c00000000106bb60 c00000000106d700
000000000000003d
 GPR04: 0000000000000000 c00000000008edc4 9000000000001033
0000000000000000
 GPR08: 0000000000000000 c000000000f597f8 c000000000f597f8
9000000000001003
 GPR12: 0000000000002200 c00000000fad3b00 0000000000000001
0000000002a50600
 GPR16: 000000002ffe0000 000000000000002e 0000000000000000
0000000000000000
 GPR20: 0000000000000000 0000000000000008 0000000000000100
0000004000000000
 GPR24: c000000001223f68 c000003ffb460000 0000000000000000
0000000000000100
 GPR28: 0000000000000000 0000004000000000 0000000000000080
0000003fff000000
 NIP [c000000000c47614] memblock_virt_alloc_internal+0x94/0x204
 LR [c000000000c47610] memblock_virt_alloc_internal+0x90/0x204
 Call Trace:
 [c00000000106bb60] [c000000000c47610] memblock_virt_alloc_internal
+0x90/0x204 (unreliable)
 [c00000000106bc10] [c000000000c49574] sparse_early_usemaps_alloc_node
+0xc4/0x248
 [c00000000106bcd0] [c000000000c49a9c] sparse_init+0x1c0/0x480
 [c00000000106bd90] [c000000000c23b38] initmem_init+0x938/0xc08
 [c00000000106be90] [c000000000c1a0e0] setup_arch+0x2c8/0x344
 [c00000000106bf00] [c000000000c13c8c] start_kernel+0x88/0x544
 [c00000000106bf90] [c00000000000a97c] start_here_common+0x1c/0x520
 Instruction dump:
 2f9b0100 40fe0034 3d42fff3 892a719c 2f890000 40fe0020 39200001 3c62ffae
 3863b388 992a719c 4b6069dd 60000000 <0fe00000> 3b60ffff 4b648bbd
60000000
 random: print_oops_end_marker+0x6c/0xa0 get_random_bytes called with
crng_init=0
 ---[ end trace 0000000000000000 ]---
 Initializing IODA2 PHB (/pciex@3fffe40000000)
 PCI host bridge /pciex@3fffe40000000 (primary) ranges:
  MEM 0x0000200000000000..0x000020ffffffffff -> 0x0000200000000000 (M64
#0..15)
  Using M64 #15 as default window
   256 (255) PE's M32: 0x10001 [segment=0x100]
                  M64: 0x10000000000 [segment=0x100000000]
   Allocated bitmap for 2040 MSIs (base IRQ 0x800)
 Initializing IODA2 PHB (/pciex@3fffe40100000)
 PCI host bridge /pciex@3fffe40100000  ranges:
 OPAL: Reboot request...
 MEM 0x0000210000000000..0x000021ffffffffff -> 0x0000210000000000 (M64
#0..15)
 Using M64 #15 as default window
  256 (255) PE's M32: 0x10001 [segment=0x100]
                 M64: 0x10000000000 [segment=0x100000000]
  Allocated bitmap for 2040 MSIs (base IRQ 0x1000)
Initializing IODA2 PHB (/pciex@3fffe40200000)
PCI host bridge /pciex@3fffe40200000  ranges:
 MEM 0x0000220000000000..0x000022ffffffffff -> 0x0000220000000000 (M64
#0..15)
 Using M64 #15 as default window
  256 (255) PE's M32: 0x10001 [segment=0x100]
                 M64: 0x10000000000 [segment=0x100000000]
  Allocated bitmap for 2040 MSIs (base IRQ 0x1800)
OPAL nvram setup, 589824 bytes
Zone ranges:
  DMA      [mem 0x0000000000000000-0x0000000fffffffff]
  DMA32    empty 
  Normal   empty 
Movable zone start for each node
Early memory node ranges
  node 256: [mem 0x0000000000000000-0x0000000fffffffff]
Could not find start_pfn for node 0
Initmem setup node 0 [mem 0x0000000000000000-0x0000000000000000]
Could not find start_pfn for node 1
Initmem setup node 1 [mem 0x0000000000000000-0x0000000000000000]
percpu: Embedded 3 pages/cpu @c000000ffe700000 s159000 r0 d37608
u262144 
Unable to handle kernel paging request for data at address 0x00000040
Faulting instruction address: 0xc00000000022b4ac
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=2048 
NUMA 
PowerNV

CPU: 12 PID: 0 Comm: swapper Tainted: G        W
4.12.0-rc5-next-20170614 #1
task: c000000000f30d00 task.stack: c00000000105c000
NIP: c00000000022b4ac LR: c00000000022b6d0 CTR: 0000000000000000
REGS: c00000000105fb70 TRAP: 0380   Tainted: G        W
(4.12.0-rc5-next-20170614)
MSR: 9000000002001033 <SF,HV,VEC,ME,IR,DR,RI,LE>
  CR: 44022228  XER: 00000000  
CFAR: c00000000022b6cc SOFTE: 0 
GPR00: c00000000022b684 c00000000105fdf0 c00000000105ec00
c000000fffd2fd00 
GPR04: 0000000000000000 0000000000000000 c000000ffea21f88
4ec4ec4ec4ec4ec5 
GPR08: 000000000000000c 0000000000000000 0000000000000000
0000000000000000 
GPR12: 0000000000002200 c00000000fd44200 0000000000000001
0000000002900600 
GPR16: 000000002ffc0000 000000000000002c 0000000000000000
0000000000000000 
GPR20: c000000000d51f28 c000000000d51f00 0000000000000000
c0000000010a1db8 
GPR24: c0000000012a08a0 c0000000010a20e4 c000000000d51f30
0000000000000001 
GPR28: c00000000109db78 0000000000000060 c000000ffea21f30
000000000000000c 
NIP [c00000000022b4ac] local_memory_node+0x2c/0x70
LR [c00000000022b6d0] __build_all_zonelists+0x1e0/0x290
Call Trace:
[c00000000105fdf0] [c00000000022b684] __build_all_zonelists+0x194/0x290
(unreliable)
[c00000000105fe70] [c000000000cafce0] build_all_zonelists_init+0x1c/0x3c
[c00000000105fe90] [c0000000002d7f0c] build_all_zonelists+0x17c/0x18c
[c00000000105ff00] [c000000000c83d5c] start_kernel+0x18c/0x53c
[c00000000105ff90] [c00000000000b17c] start_here_common+0x1c/0x520
Instruction dump:
60420000 3c4c00e3 38423780 3d22001b 392944e8 78631f24 7d29182a 81491a08 
38691a00 2b8a0002 41dd0010 e9230000 <e8690042> 4e800020 7c0802a6
38800002 
---[ end trace f68728a0d3053b52 ]---

Kernel panic - not syncing: Attempted to kill the idle task! 
Rebooting in 10 seconds..

-- 
Regard's

Abdul Haleem
IBM Linux Technology Centre