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Date: Fri, 4 Sep 2015 12:08:51 +0200 From: Juergen Gross <jgross@...e.com> To: Roger Pau Monné <roger.pau@...rix.com> Cc: David Vrabel <david.vrabel@...rix.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, xen-devel <xen-devel@...ts.xenproject.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: Kernel crash with "xen: avoid early crash of memory limited dom0" On 09/04/2015 11:48 AM, Roger Pau Monné wrote: > Hello, > > The following commit: > > commit fa84f27e21200dbe7d18c21af424d1de703b7567 > Author: Juergen Gross <jgross@...e.com> > Date: Wed Aug 19 18:52:34 2015 +0200 > > xen: avoid early crash of memory limited dom0 > > Which is queued in: > > git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git for-linus-4.3 > > Is giving me the following panic: > > Loading xen/xend.gz... ok > Loading linux/vmlinuz-4.2.0-rc7+... ok > Loading linux/initrd.img-4.2.0-rc7+... ok > Xen 4.6.0-rc > (XEN) Xen version 4.6.0-rc (root@) (gcc (Debian 4.9.2-10) 4.9.2) debug=y Thu Aug 27 12:30:51 CEST 2015 > (XEN) Latest ChangeSet: Mon Aug 24 15:48:58 2015 -0400 git:6596412 > (XEN) Console output is synchronous. > (XEN) Bootloader: PXELINUX 4.02 debian-20101014 > (XEN) Command line: sync_console dom0_vcpus_pin dom0_mem=2048M ioapic_ack=old iommu=debug,no-intremap dom0_max_vcpus=8 guest_loglvl=debug loglvl=debug console=com1 > (XEN) Video information: > (XEN) VGA is text mode 80x25, font 8x16 > (XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds > (XEN) EDID info not retrieved because of reasons unknown > (XEN) Disc information: > (XEN) Found 2 MBR signatures > (XEN) Found 2 EDD information structures > (XEN) Xen-e820 RAM map: > (XEN) 0000000000000000 - 0000000000092400 (usable) > (XEN) 00000000000f0000 - 0000000000100000 (reserved) > (XEN) 0000000000100000 - 00000000dfdf9c00 (usable) > (XEN) 00000000dfdf9c00 - 00000000dfe4bc00 (ACPI NVS) > (XEN) 00000000dfe4bc00 - 00000000dfe4dc00 (ACPI data) > (XEN) 00000000dfe4dc00 - 00000000e0000000 (reserved) > (XEN) 00000000f8000000 - 00000000fd000000 (reserved) > (XEN) 00000000fe000000 - 00000000fed00400 (reserved) > (XEN) 00000000fee00000 - 00000000fef00000 (reserved) > (XEN) 00000000ffb00000 - 0000000100000000 (reserved) > (XEN) 0000000100000000 - 00000001a0000000 (usable) > (XEN) ACPI: RSDP 000FEC30, 0024 (r2 DELL ) > (XEN) ACPI: XSDT 000FCCC7, 007C (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: FACP 000FCDB7, 00F4 (r3 DELL B10K 15 ASL 61) > (XEN) ACPI: DSDT FFE9E952, 4A74 (r1 DELL dt_ex 1000 INTL 20050624) > (XEN) ACPI: FACS DFDF9C00, 0040 > (XEN) ACPI: SSDT FFEA34D7, 009C (r1 DELL st_ex 1000 INTL 20050624) > (XEN) ACPI: APIC 000FCEAB, 015E (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: BOOT 000FD009, 0028 (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: ASF! 000FD031, 0096 (r32 DELL B10K 15 ASL 61) > (XEN) ACPI: MCFG 000FD0C7, 003C (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: HPET 000FD103, 0038 (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: TCPA 000FD35F, 0032 (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: DMAR 000FD391, 00C8 (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: SLIC 000FD13B, 0176 (r1 DELL B10K 15 ASL 61) > (XEN) ACPI: SSDT DFE4DC00, 276C (r1 INTEL PPM RCM 80000001 INTL 20061109) > (XEN) System RAM: 6141MB (6288940kB) > (XEN) No NUMA configuration found > (XEN) Faking a node at 0000000000000000-00000001a0000000 > (XEN) Domain heap initialised > (XEN) DMI 2.5 present. > (XEN) Using APIC driver default > (XEN) ACPI: PM-Timer IO Port: 0x808 > (XEN) ACPI: SLEEP INFO: pm1x_cnt[1:804,1:0], pm1x_evt[1:800,1:0] > (XEN) ACPI: wakeup_vec[dfdf9c0c], vec_size[20] > (XEN) ACPI: Local APIC address 0xfee00000 > (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) > (XEN) Processor #0 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled) > (XEN) Processor #2 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled) > (XEN) Processor #4 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled) > (XEN) Processor #6 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x01] enabled) > (XEN) Processor #1 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x03] enabled) > (XEN) Processor #3 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x05] enabled) > (XEN) Processor #5 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] enabled) > (XEN) Processor #7 7:10 APIC version 21 > (XEN) ACPI: LAPIC (acpi_id[0x09] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x10] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x11] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x12] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x13] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x14] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x15] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x16] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x17] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x18] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x19] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1a] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1b] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1c] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1d] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1e] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x1f] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC (acpi_id[0x20] lapic_id[0x00] disabled) > (XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high level lint[0x1]) > (XEN) ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0]) > (XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23 > (XEN) ACPI: IOAPIC (id[0x09] address[0xfec80000] gsi_base[24]) > (XEN) IOAPIC[1]: apic_id 9, version 32, address 0xfec80000, GSI 24-47 > (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) > (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) > (XEN) ACPI: IRQ0 used by override. > (XEN) ACPI: IRQ2 used by override. > (XEN) ACPI: IRQ9 used by override. > (XEN) Enabling APIC mode: Flat. Using 2 I/O APICs > (XEN) ACPI: HPET id: 0x8086a301 base: 0xfed00000 > (XEN) [VT-D]dmar.c:809: Host address width 36 > (XEN) [VT-D]dmar.c:823: found ACPI_DMAR_DRHD: > (XEN) [VT-D]dmar.c:485: dmaru->address = fedc0000 > (XEN) [VT-D]iommu.c:1149: drhd->address = fedc0000 iommu->reg = ffff82c000201000 > (XEN) [VT-D]iommu.c:1151: cap = c90780106f0462 ecap = f020fe > (XEN) [VT-D]dmar.c:410: IOAPIC: 0000:00:13.0 > (XEN) [VT-D]dmar.c:410: IOAPIC: 0000:00:1f.7 > (XEN) [VT-D]dmar.c:499: flags: INCLUDE_ALL > (XEN) [VT-D]dmar.c:828: found ACPI_DMAR_RMRR: > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1d.0 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1d.1 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1d.2 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1d.7 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1a.0 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1a.1 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1a.2 > (XEN) [VT-D]dmar.c:396: endpoint: 0000:00:1a.7 > (XEN) [VT-D]dmar.c:694: RMRR region: base_addr dfe58000 end_address dfe6ffff > (XEN) [VT-D]dmar.c:833: found ACPI_DMAR_ATSR: > (XEN) [VT-D]dmar.c:723: atsru->all_ports: 0 > (XEN) [VT-D]dmar.c:366: bridge: 0000:00:01.0 start=0 sec=1 sub=1 > (XEN) [VT-D]dmar.c:366: bridge: 0000:00:03.0 start=0 sec=2 sub=2 > (XEN) [VT-D]dmar.c:366: bridge: 0000:00:07.0 start=0 sec=3 sub=3 > (XEN) ERST table was not found > (XEN) Using ACPI (MADT) for SMP configuration information > (XEN) SMP: Allowing 32 CPUs (24 hotplug CPUs) > (XEN) IRQ limits: 48 GSI, 1504 MSI/MSI-X > (XEN) mce_intel.c:735: MCA Capability: BCAST 1 SER 0 CMCI 1 firstbank 0 extended MCE MSR 0 > (XEN) Intel machine check reporting enabled > (XEN) Using scheduler: SMP Credit Scheduler (credit) > (XEN) Detected 3066.886 MHz processor. > (XEN) Initing memory sharing. > (XEN) alt table ffff82d0802e7d50 -> ffff82d0802e9010 > (XEN) PCI: MCFG configuration 0: base f8000000 segment 0000 buses 00 - 3f > (XEN) PCI: MCFG area at f8000000 reserved in E820 > (XEN) PCI: Using MCFG for segment 0000 bus 00-3f > (XEN) Intel VT-d iommu 0 supported page sizes: 4kB. > (XEN) Intel VT-d Snoop Control enabled. > (XEN) Intel VT-d Dom0 DMA Passthrough not enabled. > (XEN) Intel VT-d Queued Invalidation enabled. > (XEN) Intel VT-d Interrupt Remapping not enabled. > (XEN) Intel VT-d Shared EPT tables not enabled. > (XEN) I/O virtualisation enabled > (XEN) - Dom0 mode: Relaxed > (XEN) Interrupt remapping disabled > (XEN) ENABLING IO-APIC IRQs > (XEN) -> Using old ACK method > (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1 > (XEN) Platform timer is 14.318MHz HPET > (XEN) Allocated console ring of 64 KiB. > (XEN) mwait-idle: MWAIT substates: 0x1120 > (XEN) mwait-idle: v0.4 model 0x1a > (XEN) mwait-idle: lapic_timer_reliable_states 0x2 > (XEN) HPET: 0 timers usable for broadcast (4 total) > (XEN) VMX: Supported advanced features: > (XEN) - APIC MMIO access virtualisation > (XEN) - APIC TPR shadow > (XEN) - Extended Page Tables (EPT) > (XEN) - Virtual-Processor Identifiers (VPID) > (XEN) - Virtual NMI > (XEN) - MSR direct-access bitmap > (XEN) HVM: ASIDs enabled. > (XEN) HVM: VMX enabled > (XEN) HVM: Hardware Assisted Paging (HAP) detected > (XEN) HVM: HAP page sizes: 4kB, 2MB > (XEN) Brought up 8 CPUs > (XEN) ACPI sleep modes: S3 > (XEN) VPMU: disabled > (XEN) mcheck_poll: Machine check polling timer started. > (XEN) Dom0 has maximum 816 PIRQs > (XEN) NX (Execute Disable) protection active > (XEN) *** LOADING DOMAIN 0 *** > (XEN) elf_parse_binary: phdr: paddr=0x1000000 memsz=0xb6f000 > (XEN) elf_parse_binary: phdr: paddr=0x1c00000 memsz=0x101000 > (XEN) elf_parse_binary: phdr: paddr=0x1d01000 memsz=0x17888 > (XEN) elf_parse_binary: phdr: paddr=0x1d19000 memsz=0xe43000 > (XEN) elf_parse_binary: memory: 0x1000000 -> 0x2b5c000 > (XEN) elf_xen_parse_note: GUEST_OS = "linux" > (XEN) elf_xen_parse_note: GUEST_VERSION = "2.6" > (XEN) elf_xen_parse_note: XEN_VERSION = "xen-3.0" > (XEN) elf_xen_parse_note: VIRT_BASE = 0xffffffff80000000 > (XEN) elf_xen_parse_note: INIT_P2M = 0x8000000000 > (XEN) elf_xen_parse_note: ENTRY = 0xffffffff81d191f0 > (XEN) elf_xen_parse_note: HYPERCALL_PAGE = 0xffffffff81001000 > (XEN) elf_xen_parse_note: FEATURES = "!writable_page_tables|pae_pgdir_above_4gb|writable_descriptor_tables|auto_translated_physmap|supervisor_mode_kernel" > (XEN) elf_xen_parse_note: SUPPORTED_FEATURES = 0x90d > (XEN) elf_xen_parse_note: PAE_MODE = "yes" > (XEN) elf_xen_parse_note: LOADER = "generic" > (XEN) elf_xen_parse_note: unknown xen elf note (0xd) > (XEN) elf_xen_parse_note: SUSPEND_CANCEL = 0x1 > (XEN) elf_xen_parse_note: MOD_START_PFN = 0x1 > (XEN) elf_xen_parse_note: HV_START_LOW = 0xffff800000000000 > (XEN) elf_xen_parse_note: PADDR_OFFSET = 0x0 > (XEN) elf_xen_addr_calc_check: addresses: > (XEN) virt_base = 0xffffffff80000000 > (XEN) elf_paddr_offset = 0x0 > (XEN) virt_offset = 0xffffffff80000000 > (XEN) virt_kstart = 0xffffffff81000000 > (XEN) virt_kend = 0xffffffff82b5c000 > (XEN) virt_entry = 0xffffffff81d191f0 > (XEN) p2m_base = 0x8000000000 > (XEN) Xen kernel: 64-bit, lsb, compat32 > (XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x2b5c000 > (XEN) PHYSICAL MEMORY ARRANGEMENT: > (XEN) Dom0 alloc.: 0000000194000000->0000000198000000 (505800 pages to be allocated) > (XEN) Init. ramdisk: 000000019f7c8000->00000001a0000000 > (XEN) VIRTUAL MEMORY ARRANGEMENT: > (XEN) Loaded kernel: ffffffff81000000->ffffffff82b5c000 > (XEN) Init. ramdisk: 0000000000000000->0000000000000000 > (XEN) Phys-Mach map: 0000008000000000->0000008000400000 > (XEN) Start info: ffffffff82b5c000->ffffffff82b5c4b4 > (XEN) Page tables: ffffffff82b5d000->ffffffff82b76000 > (XEN) Boot stack: ffffffff82b76000->ffffffff82b77000 > (XEN) TOTAL: ffffffff80000000->ffffffff82c00000 > (XEN) ENTRY ADDRESS: ffffffff81d191f0 > (XEN) Dom0 has maximum 8 VCPUs > (XEN) elf_load_binary: phdr 0 at 0xffffffff81000000 -> 0xffffffff81b6f000 > (XEN) elf_load_binary: phdr 1 at 0xffffffff81c00000 -> 0xffffffff81d01000 > (XEN) elf_load_binary: phdr 2 at 0xffffffff81d01000 -> 0xffffffff81d18888 > (XEN) elf_load_binary: phdr 3 at 0xffffffff81d19000 -> 0xffffffff81df0000 > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:00:00.0 map > (XEN) Found masked UR signaling on 0000:00:00.0 > (XEN) Found masked UR signaling on 0000:00:01.0 > (XEN) Found masked UR signaling on 0000:00:03.0 > (XEN) Found masked UR signaling on 0000:00:07.0 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:00:14.0 > (XEN) Masked VT-d error signaling on 0000:00:14.0 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:00:14.1 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:00:14.2 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1a.0 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1a.1 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1a.2 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1a.7 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:00:1b.0 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1d.0 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1d.1 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1d.2 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1d.7 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1f.0 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1f.2 > (XEN) [VT-D]iommu.c:1459: d0:PCI: map 0000:00:1f.3 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:01:00.0 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:01:00.1 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:02:00.0 > (XEN) [VT-D]iommu.c:1447: d0:PCIe: map 0000:05:00.0 > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:00.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:00.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:02.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:02.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:03.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:03.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:03.4 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:04.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:04.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:04.2 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:04.3 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:05.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:05.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:05.2 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:05.3 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:06.0 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:06.1 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:06.2 map > (XEN) [VT-D]iommu.c:1433: d0:Hostbridge: skip 0000:3f:06.3 map > (XEN) [VT-D]iommu.c:729: iommu_enable_translation: iommu->reg = ffff82c000201000 > (XEN) Scrubbing Free RAM on 1 nodes using 4 CPUs > (XEN) .............done. > (XEN) Initial low memory virq threshold set at 0x4000 pages. > (XEN) Std. Loglevel: All > (XEN) Guest Loglevel: All > (XEN) ********************************************** > (XEN) ******* WARNING: CONSOLE OUTPUT IS SYNCHRONOUS > (XEN) ******* This option is intended to aid debugging of Xen by ensuring > (XEN) ******* that all output is synchronously delivered on the serial line. > (XEN) ******* However it can introduce SIGNIFICANT latencies and affect > (XEN) ******* timekeeping. It is NOT recommended for production use! > (XEN) ********************************************** > (XEN) 3... 2... 1... > (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen) > (XEN) Freed 304kB init memory. > mapping kernel into physical memory > about to get started... > [ 0.000000] x86/PAT: Configuration [0-7]: WB WT UC- UC WC WP UC UC > [ 0.000000] Initializing cgroup subsys cpuset > [ 0.000000] Initializing cgroup subsys cpu > [ 0.000000] Initializing cgroup subsys cpuacct > [ 0.000000] Linux version 4.2.0-rc7+ (root@...i) (gcc version 4.4.5 (Debian 4.4.5-8) ) #0 SMP Wed Jan 8 11:20:24 CET 2014 > [ 0.000000] Command line: ramdisk_size=1048576 root=UUID=0bcbaae9-bca3-48ee-909e-a34dc8d1539c ro earlyprintk=xen loglevel=9 console=hvc0 debug max_loop=64 > [ 0.000000] x86/fpu: Legacy x87 FPU detected. > [ 0.000000] x86/fpu: Using 'lazy' FPU context switches. > [ 0.000000] Released 0 page(s) > [ 0.000000] e820: BIOS-provided physical RAM map: > [ 0.000000] Xen: [mem 0x0000000000000000-0x0000000000091fff] usable > [ 0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved > [ 0.000000] Xen: [mem 0x0000000000100000-0x000000007fffffff] usable > [ 0.000000] Xen: [mem 0x0000000080000000-0x00000000dfdf9bff] unusable > [ 0.000000] Xen: [mem 0x00000000dfdf9c00-0x00000000dfe4bbff] ACPI NVS > [ 0.000000] Xen: [mem 0x00000000dfe4bc00-0x00000000dfe4dbff] ACPI data > [ 0.000000] Xen: [mem 0x00000000dfe4dc00-0x00000000dfffffff] reserved > [ 0.000000] Xen: [mem 0x00000000f8000000-0x00000000fcffffff] reserved > [ 0.000000] Xen: [mem 0x00000000fe000000-0x00000000fed003ff] reserved > [ 0.000000] Xen: [mem 0x00000000fedc0000-0x00000000fedc0fff] reserved > [ 0.000000] Xen: [mem 0x00000000fee00000-0x00000000feefffff] reserved > [ 0.000000] Xen: [mem 0x00000000ffb00000-0x00000000ffffffff] reserved > [ 0.000000] Xen: [mem 0x0000000100000000-0x000000019fffffff] unusable > [ 0.000000] bootconsole [xenboot0] enabled > [ 0.000000] NX (Execute Disable) protection: active > [ 0.000000] SMBIOS 2.5 present. > [ 0.000000] DMI: Dell Inc. Precision WorkStation T3500 /09KPNV, BIOS A17 05/28/2013 > [ 0.000000] Hypervisor detected: Xen > [ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved > [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable > [ 0.000000] e820: last_pfn = 0x80000 max_arch_pfn = 0x400000000 > [ 0.000000] MTRR: Disabled > [ 0.000000] Base memory trampoline at [ffff88000008c000] 8c000 size 24576 > [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] > [ 0.000000] [mem 0x00000000-0x000fffff] page 4k > [ 0.000000] init_memory_mapping: [mem 0x7fe00000-0x7fffffff] > [ 0.000000] [mem 0x7fe00000-0x7fffffff] page 4k > [ 0.000000] BRK [0x02b36000, 0x02b36fff] PGTABLE > [ 0.000000] BRK [0x02b37000, 0x02b37fff] PGTABLE > [ 0.000000] init_memory_mapping: [mem 0x60000000-0x7fdfffff] > [ 0.000000] [mem 0x60000000-0x7fdfffff] page 4k > [ 0.000000] BRK [0x02b38000, 0x02b38fff] PGTABLE > [ 0.000000] BRK [0x02b39000, 0x02b39fff] PGTABLE > [ 0.000000] BRK [0x02b3a000, 0x02b3afff] PGTABLE > [ 0.000000] BRK [0x02b3b000, 0x02b3bfff] PGTABLE > [ 0.000000] init_memory_mapping: [mem 0x00100000-0x5fffffff] > [ 0.000000] [mem 0x00100000-0x5fffffff] page 4k > [ 0.000000] RAMDISK: [mem 0x04000000-0x04837fff] > [ 0.000000] ACPI: Early table checksum verification disabled > [ 0.000000] ACPI: RSDP 0x00000000000FEC30 000024 (v02 DELL ) > [ 0.000000] ACPI: XSDT 0x00000000000FCCC7 00007C (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: FACP 0x00000000000FCDB7 0000F4 (v03 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe0Block: 128/64 (20150619/tbfadt-623) > [ 0.000000] ACPI: DSDT 0x00000000FFE9E952 004A74 (v01 DELL dt_ex 00001000 INTL 20050624) > [ 0.000000] ACPI: FACS 0x00000000DFDF9C00 000040 > [ 0.000000] ACPI: FACS 0x00000000DFDF9C00 000040 > [ 0.000000] ACPI: SSDT 0x00000000FFEA34D7 00009C (v01 DELL st_ex 00001000 INTL 20050624) > [ 0.000000] ACPI: APIC 0x00000000000FCEAB 00015E (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: BOOT 0x00000000000FD009 000028 (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: ASF! 0x00000000000FD031 000096 (v32 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: MCFG 0x00000000000FD0C7 00003C (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: HPET 0x00000000000FD103 000038 (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: TCPA 0x00000000000FD35F 000032 (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: DMAR 0x00000000000FD391 0000C8 (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: SLIC 0x00000000000FD13B 000176 (v01 DELL B10K 00000015 ASL 00000061) > [ 0.000000] ACPI: SSDT 0x00000000DFE4DC00 00276C (v01 INTEL PPM RCM 80000001 INTL 20061109) > [ 0.000000] ACPI: Local APIC address 0xfee00000 > [ 0.000000] Setting APIC routing to Xen PV. > [ 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 0x0000000000001000-0x0000000000091fff] > [ 0.000000] node 0: [mem 0x0000000000100000-0x000000007fffffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007fffffff] > [ 0.000000] On node 0 totalpages: 524177 > [ 0.000000] DMA zone: 56 pages used for memmap > [ 0.000000] DMA zone: 21 pages reserved > [ 0.000000] DMA zone: 3985 pages, LIFO batch:0 > [ 0.000000] DMA32 zone: 7112 pages used for memmap > [ 0.000000] DMA32 zone: 520192 pages, LIFO batch:31 > [ 0.000000] p2m virtual area at ffffc90000000000, size is 400000 > (XEN) d0v0 Unhandled invalid opcode fault/trap [#6, ec=0000] > (XEN) domain_crash_sync called from entry.S: fault at ffff82d08023c069 create_bounce_frame+0x139/0x148 > (XEN) Domain 0 (vcpu#0) crashed on cpu#0: > (XEN) ----[ Xen-4.6.0-rc x86_64 debug=y Tainted: C ]---- > (XEN) CPU: 0 > (XEN) RIP: e033:[<ffffffff81008bb4>] > (XEN) RFLAGS: 0000000000000206 EM: 1 CONTEXT: pv guest (d0v0) > (XEN) rax: 0000000194092001 rbx: 0000000000000000 rcx: 0000000000194092 > (XEN) rdx: 0000000000000001 rsi: 0000000000194093 rdi: 0000000000080000 > (XEN) rbp: ffffffff81c03d28 rsp: ffffffff81c03cb8 r8: aaaaaaaaaaaaaaaa > (XEN) r9: 0000000000000000 r10: 00000000deadbeef r11: 000000007f77e000 > (XEN) r12: 0000000000080000 r13: 0000000000080000 r14: 0000000000080000 > (XEN) r15: fffffffffff80000 cr0: 0000000080050033 cr4: 00000000000026e0 > (XEN) cr3: 0000000195c08000 cr2: 0000000000000000 > (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e02b cs: e033 > (XEN) Guest stack trace from rsp=ffffffff81c03cb8: > (XEN) 0000000000194092 000000007f77e000 ffffffff81008bb4 000000010000e030 > (XEN) 0000000000010006 ffffffff81c03cf8 000000000000e02b ffffffff8107cec9 > (XEN) ffffffff81c03d18 ffffffff81005a36 0000000000000000 ffffffffffffffff > (XEN) 0000000000080000 0000000000080000 ffffffff81c03d98 ffffffff81008c7a > (XEN) ffffffff81c03d58 0000000000194092 ffffffff81dae000 8000000194092063 > (XEN) ffffffff81c03d78 ffffffff81040abc ffffffff81dae000 0000000000000000 > (XEN) ffffffffffffffff 0000000000080000 0000000000080000 fffffffffff80000 > (XEN) ffffffff81c03e08 ffffffff81d1cfe8 ffffffff81c03e08 0000000000194092 > (XEN) 0000000000195dae 0000000194092000 0000000194092001 0000000000080000 > (XEN) ffffffff81c03e08 ffff880002b5c000 ffff880004838ff8 ffff880004839ff8 > (XEN) 00003ffffffff000 0000000000000000 ffffffff81c03e68 ffffffff81d1e6b4 > (XEN) ffffffff81cee910 0000000000001000 ffff880004838000 0000000004c3a000 > (XEN) 000000007fc1b000 000000007ff91000 ffff880004000000 0000000004838000 > (XEN) 0000000000000000 0000000000000000 ffffffff81c03ee8 ffffffff81d223c5 > (XEN) ffffffff81c03e88 ffffffff81088501 ffffffff81c03ee8 ffffffff816441e2 > (XEN) 0000000000000000 0000000000000000 ffffffff81c03ef8 0000000000000000 > (XEN) ffffffff81c03ed8 ffffffffffffffff 0000000000000000 ffffffff81dab9c0 > (XEN) 0000000000000000 0000000000000000 ffffffff81c03f28 ffffffff81d19b94 > (XEN) 5520205457202042 ffffffff81db60c0 ffff880002b5c000 ffffffff81c03f60 > (XEN) 0000000000000000 0000000000000000 ffffffff81c03f38 ffffffff81d194c6 > (XEN) Hardware Dom0 crashed: rebooting machine in 5 seconds. > > Reverting the commit solves the issue. Can you give me some more details like kernel config? In which function does the crash occur? Juergen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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