[Xen-devel] Linux 4.15-rc6 + xen-unstable: BUG: unable to handle kernel NULL pointer dereference at (null), [ 0.000000] IP: zero_resv_unavail+0x8e/0xe1

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hi Boris / Juergen,

First of all best wishes for a quite turbulent starting new year.

Now the holidays are over I finally gotten to test a linux 4.15-rc6 kernel
and experienced a crash in early dom0 boot on my system (AMD phenom x6).

I tested some earlier linux 4.15 rc's but experienced crashes then as well, 
but didn't have time to setup serial console to send them in 
(and waited to see if the issue Boris fixed with AMD PCI 64bit bar's could be 
it). 

But since that patch went in before 4.15 rc6, that doesn't seem to be the 
issue. 
So it could be that the culprit went in pretty earlier in the 4.15 cycle.

The 4.15-rc6 kernel boots fine on bare metal, as does a 4.14.6 kernel on 
xen-unstable.

Hopefully you have a pointer to what is wrong, if not i can try to do a bisect.

--
Sander

Attached: .config and full serial log

 0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: RSDP 0x00000000000FB100 000014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 0x00000000C7F90000 000048 (v01 MSI    OEMSLIC  
20100913 MSFT 00000097)
[    0.000000] ACPI: FACP 0x00000000C7F90200 000084 (v01 7640MS A7640100 
20100913 MSFT 00000097)
[    0.000000] ACPI: DSDT 0x00000000C7F905E0 009427 (v01 A7640  A7640100 
00000100 INTL 20051117)
[    0.000000] ACPI: FACS 0x00000000C7F9E000 000040
[    0.000000] ACPI: APIC 0x00000000C7F90390 000088 (v01 7640MS A7640100 
20100913 MSFT 00000097)
[    0.000000] ACPI: MCFG 0x00000000C7F90420 00003C (v01 7640MS OEMMCFG  
20100913 MSFT 00000097)
[    0.000000] ACPI: SLIC 0x00000000C7F90460 000176 (v01 MSI    OEMSLIC  
20100913 MSFT 00000097)
[    0.000000] ACPI: OEMB 0x00000000C7F9E040 000072 (v01 7640MS A7640100 
20100913 MSFT 00000097)
[    0.000000] ACPI: SRAT 0x00000000C7F9A5E0 000108 (v03 AMD    FAM_F_10 
00000002 AMD  00000001)
[    0.000000] ACPI: HPET 0x00000000C7F9A6F0 000038 (v01 7640MS OEMHPET  
20100913 MSFT 00000097)
[    0.000000] ACPI: IVRS 0x00000000C7F9A730 000110 (v01 AMD    RD890S   
00202031 AMD  00000000)
[    0.000000] ACPI: SSDT 0x00000000C7F9A840 000DA4 (v01 A M I  POWERNOW 
00000001 AMD  00000001)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] Setting APIC routing to Xen PV.
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000] NODE_DATA(0) allocated [mem 0x7fc15000-0x7fc1efff]
[    0.000000] tsc: Fast TSC calibration using PIT
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.000000]   DMA32    [mem 0x0000000001000000-0x000000007fffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000001000-0x0000000000095fff]
[    0.000000]   node   0: [mem 0x0000000000100000-0x000000007fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007fffffff]
[    0.000000] On node 0 totalpages: 524181
[    0.000000]   DMA zone: 64 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3989 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 8128 pages used for memmap
[    0.000000]   DMA32 zone: 520192 pages, LIFO batch:31
[    0.000000] BUG: unable to handle kernel NULL pointer dereference at         
  (null)
[    0.000000] IP: zero_resv_unavail+0x8e/0xe1
[    0.000000] PGD 0 P4D 0 
[    0.000000] Oops: 0002 [#1] SMP
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 
4.15.0-rc6-20180104-linus-doflr+ #1
[    0.000000] Hardware name: MSI MS-7640/890FXA-GD70 (MS-7640)  , BIOS V1.8B1 
09/13/2010
[    0.000000] RIP: e030:zero_resv_unavail+0x8e/0xe1
[    0.000000] RSP: e02b:ffffffff82803d68 EFLAGS: 00010006
[    0.000000] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000010
[    0.000000] RDX: 000000000007ffff RSI: 0000000000000100 RDI: ffffea0002000000
[    0.000000] RBP: ffffffff82803d70 R08: ffffea0002000000 R09: 0000000000000002
[    0.000000] R10: 0000000000000002 R11: 0000000000000003 R12: ffffea0000000000
[    0.000000] R13: 0000000000000000 R14: ffffffff82803f20 R15: 0000000000000000
[    0.000000] FS:  0000000000000000(0000) GS:ffffffff82e16000(0000) 
knlGS:0000000000000000
[    0.000000] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.000000] CR2: 0000000000000000 CR3: 0000000002823000 CR4: 0000000000000660
[    0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.000000] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000
[    0.000000] Call Trace:
[    0.000000]  ? free_area_init_nodes+0x690/0x69f
[    0.000000]  ? zone_sizes_init+0x4b/0x50
[    0.000000]  ? xen_pagetable_init+0x13/0x43f
[    0.000000]  ? memblock_find_dma_reserve+0x141/0x15b
[    0.000000]  ? memblock_find_dma_reserve+0x150/0x15b
[    0.000000]  ? numa_init+0x43c/0x453
[    0.000000]  ? setup_arch+0x7a0/0x87f
[    0.000000]  ? start_kernel+0x58/0x3a8
[    0.000000]  ? iommu_shutdown_noop+0x10/0x10
[    0.000000]  ? xen_start_kernel+0x528/0x534
[    0.000000] Code: da 49 c1 e0 06 4d 01 e0 48 8b 44 24 08 48 8d 0c 1a 48 05 
ff 0f 00 00 48 c1 e8 0c 48 39 c8 76 16 4c 89 c7 b9 10 00 00 00 44 89 e8 <f3> ab 
48 ff c3 49 83 c0 40 eb d2 6a 00 55 31 d2 49 c7 c0 90 78 
[    0.000000] RIP: zero_resv_unavail+0x8e/0xe1 RSP: ffffffff82803d68
[    0.000000] CR2: 0000000000000000
[    0.000000] ---[ end trace b788f32e38f6de39 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
(XEN) [2018-01-04 09:52:49.218] Hardware Dom0 crashed: rebooting machine in 5 
seconds.

Attachment: dotconfig
Description: Text document

Attachment: serial-log.txt
Description: Text document

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel