On Tue, 31 Oct 2006, Horms wrote:
On 月, 10月 30, 2006 at 11:49:00午前 +0000, Mel Gorman wrote:On Mon, 30 Oct 2006, Horms wrote:On Mon, Oct 30, 2006 at 06:11:26PM +0900, Horms wrote:On Fri, Oct 27, 2006 at 10:15:16AM +0100, Andy Whitcroft wrote:A logical next step might be to bodge things such that we offer up the kernel image as an active range and see if that sorts out the alignment issue we are seeing, this will allow us to be certain it is the kernel image in this area. Something like the following inserted into register_memory() might work: add_active_range(0, code_resource.start >> PAGE_SHIFT, data_resource.end >> PAGE_SHIFT); Not sure this is the right thing as a fix, but would help confirm the theory.I will poke around with that. Though it will probably be tomorrow.Hi, I did try adding that line to the end of register_memory(), however it didn't seem to alter the behaviour that I am seeing. The log is below, including the EFI map, in case it is useful.Judging from the output of early_node_map[], the range of memory the kdump kernel is in is still not being registered so the memmap is not initialised. In the EFI output, we see mem12: type=2, attr=0xb, range=[0x0000000010000000-0x00000000104b0000) (4MB) mem13: type=2, attr=0xb, range=[0x00000000104b0000-0x00000000104c0000) (0MB) mem14: type=2, attr=0xb, range=[0x00000000104c0000-0x0000000010760000) (2MB) mem15: type=7, attr=0xb, range=[0x0000000010760000-0x000000001ffe4000) (248MB) The first three ranges is where I suspect the kernel is and with "type=2", add_active_range() is not being called when walking the EFI map. If this memory is marked correctly, it will get registered correctly. Try calling add_active_range(0, 16384, 16855) manually after the call to efi_memmap_walk(register_active_ranges, &nid) and see does the kernel boot.Hi Mel, I am pleased to report that the above change did indeed allow the "crash kernel" to boot without incident.
ok, that confirms then that the "adjusted" memmap is messed up and providing the wrong information which mucks the initialisation later. Boot a kernel without kdump in it at all and look at the output of early_node_map[] and you'll see what the 256MB range at PFN 16384 is meant to look like. Then apply the kdump patches and get the EFI map to look the same for that 256MB region on kexec.
In the process of doing this I noticed that if CONFIG_HUGETLBFS is not set (with CONFIG_HUGETLB_PAGE unset, though that seems to make no difference) the kernel halts a little futher on.
The bad page PFN faulting is at 266809 which is *WAY* outside normal memory. Something else is going wrong there.
This is despite having adjusted the valudes in the hack you suggested accordingly. And it does not seem to be aleviated by ading extra add_active_range() calls for the pfn corresponding to the page that causes the crash.
I'm not suprised, there is no memory there. It's not clear to me how such a page ended up on the freelists.
It is interesting that in this case the kernel completely locks up. A log is below for reference. -- Horms H: http://www.vergenet.net/~horms/ W: http://www.valinux.co.jp/en/ Uncompressing Linux... done Loading initrd people/horms/initramfs_data.cpio.gz...done Linux version 2.6.18-kexec-g05e0caad-dirty (horms@xxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.5) #57 SMP Tue Oct 31 17:59:41 JST 2006 EFI v1.10 by INTEL: SALsystab=0x7fe54980 ACPI=0x7ff99000 ACPI 2.0=0x7ff98000 MPS=0x7ff97000 SMBIOS=0xf0000 Kernel Start Address: _start=000000070300000b mem00: type=4, attr=0x9, range=[0x0000000000000000-0x0000000000001000) (0MB) mem01: type=7, attr=0x9, range=[0x0000000000001000-0x0000000000007000) (0MB) mem02: type=4, attr=0x9, range=[0x0000000000007000-0x0000000000009000) (0MB) mem03: type=7, attr=0x9, range=[0x0000000000009000-0x0000000000082000) (0MB) mem04: type=6, attr=0x8000000000000009, range=[0x0000000000082000-0x0000000000084000) (0MB) mem05: type=7, attr=0x9, range=[0x0000000000084000-0x0000000000085000) (0MB) mem06: type=4, attr=0x9, range=[0x0000000000085000-0x00000000000a0000) (0MB) mem07: type=5, attr=0x8000000000000009, range=[0x00000000000c0000-0x0000000000100000) (0MB) mem08: type=7, attr=0xb, range=[0x0000000000100000-0x0000000004000000) (63MB) mem09: type=2, attr=0xb, range=[0x0000000004000000-0x0000000004736000) (7MB) mem10: type=7, attr=0xb, range=[0x0000000004736000-0x000000000ffc0000) (184MB) mem11: type=4, attr=0xb, range=[0x000000000ffc0000-0x0000000010000000) (0MB) mem12: type=7, attr=0xb, range=[0x0000000010000000-0x000000007af7e000) (1711MB) mem13: type=2, attr=0xb, range=[0x000000007af7e000-0x000000007c8d2000) (25MB) mem14: type=1, attr=0xb, range=[0x000000007c8d2000-0x000000007c92e000) (0MB) mem15: type=2, attr=0xb, range=[0x000000007c92e000-0x000000007c938000) (0MB) mem16: type=1, attr=0xb, range=[0x000000007c938000-0x000000007c97e000) (0MB) mem17: type=7, attr=0xb, range=[0x000000007c97e000-0x000000007ce16000) (4MB) mem18: type=4, attr=0xb, range=[0x000000007ce16000-0x000000007ce1c000) (0MB) mem19: type=7, attr=0xb, range=[0x000000007ce1c000-0x000000007ce20000) (0MB) mem20: type=4, attr=0xb, range=[0x000000007ce20000-0x000000007ce22000) (0MB) mem21: type=7, attr=0xb, range=[0x000000007ce22000-0x000000007ce2a000) (0MB) mem22: type=4, attr=0xb, range=[0x000000007ce2a000-0x000000007d001000) (1MB) mem23: type=7, attr=0xb, range=[0x000000007d001000-0x000000007d002000) (0MB) mem24: type=4, attr=0xb, range=[0x000000007d002000-0x000000007d004000) (0MB) mem25: type=7, attr=0xb, range=[0x000000007d004000-0x000000007d026000) (0MB) mem26: type=4, attr=0xb, range=[0x000000007d026000-0x000000007d068000) (0MB) mem27: type=7, attr=0xb, range=[0x000000007d068000-0x000000007d069000) (0MB) mem28: type=4, attr=0xb, range=[0x000000007d069000-0x000000007d37e000) (3MB) mem29: type=7, attr=0xb, range=[0x000000007d37e000-0x000000007d700000) (3MB) mem30: type=3, attr=0xb, range=[0x000000007d700000-0x000000007d77e000) (0MB) mem31: type=7, attr=0xb, range=[0x000000007d77e000-0x000000007d8b4000) (1MB) mem32: type=6, attr=0x8000000000000009, range=[0x000000007d8b4000-0x000000007d900000) (0MB) mem33: type=3, attr=0xb, range=[0x000000007d900000-0x000000007f980000) (32MB) mem34: type=7, attr=0xb, range=[0x000000007f980000-0x000000007fa00000) (0MB) mem35: type=5, attr=0x8000000000000009, range=[0x000000007fa00000-0x000000007fe00000) (4MB) mem36: type=13, attr=0x8000000000000009, range=[0x000000007fe00000-0x000000007fe48000) (0MB) mem37: type=5, attr=0x8000000000000009, range=[0x000000007fe48000-0x000000007fea0000) (0MB) mem38: type=7, attr=0xb, range=[0x000000007fea0000-0x000000007feda000) (0MB) mem39: type=5, attr=0x8000000000000009, range=[0x000000007feda000-0x000000007ff46000) (0MB) mem40: type=6, attr=0x8000000000000009, range=[0x000000007ff46000-0x0000000080000000) (0MB) mem41: type=11, attr=0x1, range=[0x00000000fe000000-0x00000000ff000000) (16MB) mem42: type=6, attr=0x8000000000000001, range=[0x00000000ff000000-0x0000000100000000) (16MB) mem43: type=11, attr=0x8000000000000001, range=[0x00000ffff8000000-0x00000ffffc000000) (64MB) mem44: type=12, attr=0x8000000000000001, range=[0x00000ffffc000000-0x0000100000000000) (64MB) CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) booting generic kernel on platform dig Early serial console at I/O port 0x2f8 (options '115200') Initial ramdisk at: 0xe00000007af84000 (9714027 bytes) SAL 3.20: Intel Corp SR870BH2 version 3.0 SAL Platform features: BusLock SAL: AP wakeup using external interrupt vector 0xf0 No logical to physical processor mapping available CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) iosapic_system_init: Disabling PC-AT compatible 8259 interrupts ACPI: Local APIC address c0000000fee00000 PLATFORM int CPEI (0x3): GSI 22 (level, low) -> CPU 0 (0x0100) vector 30 register_intr: changing vector 39 from IO-SAPIC-edge to IO-SAPIC-level 2 CPUs available, 2 CPUs total MCA related initialization done Virtual mem_map starts at 0xa0007fffff900000 Zone PFN ranges: DMA 1025 -> 262144 Normal 262144 -> 262144 early_node_map[7] active PFN ranges 0: 1025 -> 4096 0: 4558 -> 16845 0: 32768 -> 125919 0: 126514 -> 127540 0: 127541 -> 128557 0: 128576 -> 130688 0: 130984 -> 130998 SMP: Allowing 2 CPUs, 0 hotplug CPUs Built 1 zonelists. Total pages: 112677 Kernel command line: BOOT_IMAGE=net0:ia64/people/horms/vmlinux.gz maxcpus=1 console=uart,io,0x2f8,115200 crashkernel=256M@256M ro PID hash table entries: 4096 (order: 12, 32768 bytes) Console: colour VGA+ 80x25 Placing software IO TLB between 0x6740000 - 0xa740000 Memory: 1656064k/1795456k available (3189k code, 418480k reserved, 2247k data, 624k init) McKinley Errata 9 workaround not needed; disabling it Dentry cache hash table entries: 262144 (order: 7, 2097152 bytes) Inode-cache hash table entries: 131072 (order: 6, 1048576 bytes) Mount-cache hash table entries: 1024 ACPI: Core revision 20060707 Boot processor id 0x0/0x100 Brought up 1 CPUs Total of 1 processors activated (1941.50 BogoMIPS). migration_cost=0 checking if image is initramfs... it is Freeing initrd memory: 9472kB freed DMI 2.3 present. ACPI: bus type pci registered ACPI: Interpreter enabled ACPI: Using IOSAPIC for interrupt routing ACPI: PCI Root Bridge [PCI0] (0000:00) PCI quirk: region 0c00-0c7f claimed by ICH4 ACPI/GPIO/TCO PCI quirk: region 0500-053f claimed by ICH4 GPIO PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1 ACPI: PCI Root Bridge [PCI1] (0000:02) ACPI: PCI Root Bridge [PCI2] (0000:05) ACPI: Device [CSFF] status [00000008]: functional but not present; setting present ACPI: PCI Root Bridge [CSFF] (0000:ff) Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init pnp: PnP ACPI: found 12 devices perfmon: version 2.0 IRQ 238 perfmon: Itanium 2 PMU detected, 16 PMCs, 18 PMDs, 4 counters (47 bits) PAL Information Facility v0.5 perfmon: added sampling format default_format perfmon_default_smpl: default_format v2.0 registered Total HugeTLB memory allocated, 0 io scheduler noop registered io scheduler anticipatory registered (default) Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled 00:08: ttyS0 at I/O 0x3f8 (irq = 44) is a 16550A 00:09: ttyS1 at I/O 0x2f8 (irq = 45) is a 16550A RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize mice: PS/2 mouse device common for all mice EFI Variables Facility v0.08 2004-May-17 Adding console on ttyS1 at I/O port 0x2f8 (options '115200') Freeing unused kernel memory: 624kB freed init started: BusyBox v1.2.1 (2006.09.23-05:46+0000) multi-call binary Starting pid 774, console /dev/console: '/etc/init.d/rcS' ifconfig: socket: Function not implemented ifconfig: No usable address families found. ifconfig: socket: Function not implemented Starting pid 883, console /dev/console: '/bin/sh' BusyBox v1.2.1 (2006.09.23-05:46+0000) Built-in shell (ash) Enter 'help' for a list of built-in commands. / # do_kdump XEN="" KDUMP="yes" ARCH="ia64" KARCH="ia64" UARCH="ia64" IMAGE="vmlinux-ia64-kdump.gz" XEN_IMAGE="xen-ia64.gz" Create ramdisk Load kernel and ramdisk Kdump SysRq : Trigger a crashdump CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) Linux version 2.6.18-kexec-g05e0caad-dirty (horms@xxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.5) #57 SMP Tue Oct 31 17:59:41 JST 2006 Ignoring memory below 256MB Ignoring memory above 512MB EFI v1.10 by INTEL: SALsystab=0x7fe54980 ACPI=0x7ff99000 ACPI 2.0=0x7ff98000 MPS=0x7ff97000 SMBIOS=0xf0000 Kernel Start Address: _start=000000070300000b mem00: type=4, attr=0x9, range=[0x0000000000000000-0x0000000000001000) (0MB) mem01: type=7, attr=0x9, range=[0x0000000000001000-0x0000000000007000) (0MB) mem02: type=4, attr=0x9, range=[0x0000000000007000-0x0000000000009000) (0MB) mem03: type=7, attr=0x9, range=[0x0000000000009000-0x0000000000082000) (0MB) mem04: type=6, attr=0x8000000000000009, range=[0x0000000000082000-0x0000000000084000) (0MB) mem05: type=7, attr=0x9, range=[0x0000000000084000-0x0000000000085000) (0MB) mem06: type=4, attr=0x9, range=[0x0000000000085000-0x00000000000a0000) (0MB) mem07: type=5, attr=0x8000000000000009, range=[0x00000000000c0000-0x0000000000100000) (0MB) mem08: type=7, attr=0xb, range=[0x0000000000100000-0x0000000004000000) (63MB) mem09: type=7, attr=0xb, range=[0x0000000004000000-0x0000000004736000) (7MB) mem10: type=7, attr=0xb, range=[0x0000000004736000-0x000000000ffc0000) (184MB) mem11: type=4, attr=0xb, range=[0x000000000ffc0000-0x0000000010000000) (0MB) mem12: type=2, attr=0xb, range=[0x0000000010000000-0x0000000010490000) (4MB) mem13: type=2, attr=0xb, range=[0x0000000010490000-0x00000000104a0000) (0MB) mem14: type=2, attr=0xb, range=[0x00000000104a0000-0x0000000010740000) (2MB) mem15: type=7, attr=0xb, range=[0x0000000010740000-0x000000001ffe4000) (248MB) mem16: type=8, attr=0xb, range=[0x000000001ffe4000-0x000000001ffe5000) (0MB) mem17: type=7, attr=0xb, range=[0x000000001ffe5000-0x000000007af7e000) (1455MB) mem18: type=7, attr=0xb, range=[0x000000007af7e000-0x000000007c8d2000) (25MB) mem19: type=1, attr=0xb, range=[0x000000007c8d2000-0x000000007c92e000) (0MB) mem20: type=7, attr=0xb, range=[0x000000007c92e000-0x000000007c938000) (0MB) mem21: type=1, attr=0xb, range=[0x000000007c938000-0x000000007c97e000) (0MB) mem22: type=7, attr=0xb, range=[0x000000007c97e000-0x000000007ce16000) (4MB) mem23: type=4, attr=0xb, range=[0x000000007ce16000-0x000000007ce1c000) (0MB) mem24: type=7, attr=0xb, range=[0x000000007ce1c000-0x000000007ce20000) (0MB) mem25: type=4, attr=0xb, range=[0x000000007ce20000-0x000000007ce22000) (0MB) mem26: type=7, attr=0xb, range=[0x000000007ce22000-0x000000007ce2a000) (0MB) mem27: type=4, attr=0xb, range=[0x000000007ce2a000-0x000000007d001000) (1MB) mem28: type=7, attr=0xb, range=[0x000000007d001000-0x000000007d002000) (0MB) mem29: type=4, attr=0xb, range=[0x000000007d002000-0x000000007d004000) (0MB) mem30: type=7, attr=0xb, range=[0x000000007d004000-0x000000007d026000) (0MB) mem31: type=4, attr=0xb, range=[0x000000007d026000-0x000000007d068000) (0MB) mem32: type=7, attr=0xb, range=[0x000000007d068000-0x000000007d069000) (0MB) mem33: type=4, attr=0xb, range=[0x000000007d069000-0x000000007d37e000) (3MB) mem34: type=7, attr=0xb, range=[0x000000007d37e000-0x000000007d700000) (3MB) mem35: type=3, attr=0xb, range=[0x000000007d700000-0x000000007d77e000) (0MB) mem36: type=7, attr=0xb, range=[0x000000007d77e000-0x000000007d8b4000) (1MB) mem37: type=6, attr=0x8000000000000009, range=[0x000000007d8b4000-0x000000007d900000) (0MB) mem38: type=3, attr=0xb, range=[0x000000007d900000-0x000000007f980000) (32MB) mem39: type=7, attr=0xb, range=[0x000000007f980000-0x000000007fa00000) (0MB) mem40: type=5, attr=0x8000000000000009, range=[0x000000007fa00000-0x000000007fe00000) (4MB) mem41: type=13, attr=0x8000000000000009, range=[0x000000007fe00000-0x000000007fe48000) (0MB) mem42: type=5, attr=0x8000000000000009, range=[0x000000007fe48000-0x000000007fea0000) (0MB) mem43: type=7, attr=0xb, range=[0x000000007fea0000-0x000000007feda000) (0MB) mem44: type=5, attr=0x8000000000000009, range=[0x000000007feda000-0x000000007ff46000) (0MB) mem45: type=6, attr=0x8000000000000009, range=[0x000000007ff46000-0x0000000080000000) (0MB) mem46: type=11, attr=0x1, range=[0x00000000fe000000-0x00000000ff000000) (16MB) mem47: type=6, attr=0x8000000000000001, range=[0x00000000ff000000-0x0000000100000000) (16MB) mem48: type=11, attr=0x8000000000000001, range=[0x00000ffff8000000-0x00000ffffc000000) (64MB) mem49: type=12, attr=0x8000000000000001, range=[0x00000ffffc000000-0x0000100000000000) (64MB) CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) booting generic kernel on platform dig Early serial console at I/O port 0x2f8 (options '115200n8') Initial ramdisk at: 0xe00000001f580000 (10739200 bytes) SAL 3.20: Intel Corp SR870BH2 version 3.0 SAL Platform features: BusLock SAL: AP wakeup using external interrupt vector 0xf0 No logical to physical processor mapping available CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) iosapic_system_init: Disabling PC-AT compatible 8259 interrupts ACPI: Local APIC address c0000000fee00000 PLATFORM int CPEI (0x3): GSI 22 (level, low) -> CPU 0 (0x0100) vector 30 register_intr: changing vector 39 from IO-SAPIC-edge to IO-SAPIC-level 2 CPUs available, 2 CPUs total MCA related initialization done Virtual mem_map starts at 0xa0007fffffc80000 Zone PFN ranges: DMA 16846 -> 262144 Normal 262144 -> 262144 early_node_map[8] active PFN ranges 0: 16384 -> 16845 0: 16846 -> 16848 0: 16849 -> 32096 0: 32752 -> 32753 0: 32754 -> 32755 0: 32756 -> 32757 0: 32758 -> 32761 0: 32762 -> 32768 SMP: Allowing 2 CPUs, 0 hotplug CPUs Built 1 zonelists. Total pages: 15261 Kernel command line: phys_efi clock=pit ip=on apm=power-off console=tty0 console=uart,io,0x2f8,115200n8 init 1 irqpoll maxcpus=1 elfcorehdr=524176K max_addr=512M min_addr=256M Warning! clock= boot option is deprecated. Use clocksource=xyz Misrouted IRQ fixup and polling support enabled This may significantly impact system performance PID hash table entries: 1024 (order: 10, 8192 bytes) Console: colour VGA+ 80x25 Linux version 2.6.18-kexec-g05e0caad-dirty (horms@xxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.5) #57 SMP Tue Oct 31 17:59:41 JST 2006 Ignoring memory below 256MB Ignoring memory above 512MB EFI v1.10 by INTEL: SALsystab=0x7fe54980 ACPI=0x7ff99000 ACPI 2.0=0x7ff98000 MPS=0x7ff97000 SMBIOS=0xf0000 Kernel Start Address: _start=000000070300000b mem00: type=4, attr=0x9, range=[0x0000000000000000-0x0000000000001000) (0MB) mem01: type=7, attr=0x9, range=[0x0000000000001000-0x0000000000007000) (0MB) mem02: type=4, attr=0x9, range=[0x0000000000007000-0x0000000000009000) (0MB) mem03: type=7, attr=0x9, range=[0x0000000000009000-0x0000000000082000) (0MB) mem04: type=6, attr=0x8000000000000009, range=[0x0000000000082000-0x0000000000084000) (0MB) mem05: type=7, attr=0x9, range=[0x0000000000084000-0x0000000000085000) (0MB) mem06: type=4, attr=0x9, range=[0x0000000000085000-0x00000000000a0000) (0MB) mem07: type=5, attr=0x8000000000000009, range=[0x00000000000c0000-0x0000000000100000) (0MB) mem08: type=7, attr=0xb, range=[0x0000000000100000-0x0000000004000000) (63MB) mem09: type=7, attr=0xb, range=[0x0000000004000000-0x0000000004736000) (7MB) mem10: type=7, attr=0xb, range=[0x0000000004736000-0x000000000ffc0000) (184MB) mem11: type=4, attr=0xb, range=[0x000000000ffc0000-0x0000000010000000) (0MB) mem12: type=2, attr=0xb, range=[0x0000000010000000-0x0000000010490000) (4MB) mem13: type=2, attr=0xb, range=[0x0000000010490000-0x00000000104a0000) (0MB) mem14: type=2, attr=0xb, range=[0x00000000104a0000-0x0000000010740000) (2MB) mem15: type=7, attr=0xb, range=[0x0000000010740000-0x000000001ffe4000) (248MB) mem16: type=8, attr=0xb, range=[0x000000001ffe4000-0x000000001ffe5000) (0MB) mem17: type=7, attr=0xb, range=[0x000000001ffe5000-0x000000007af7e000) (1455MB) mem18: type=7, attr=0xb, range=[0x000000007af7e000-0x000000007c8d2000) (25MB) mem19: type=1, attr=0xb, range=[0x000000007c8d2000-0x000000007c92e000) (0MB) mem20: type=7, attr=0xb, range=[0x000000007c92e000-0x000000007c938000) (0MB) mem21: type=1, attr=0xb, range=[0x000000007c938000-0x000000007c97e000) (0MB) mem22: type=7, attr=0xb, range=[0x000000007c97e000-0x000000007ce16000) (4MB) mem23: type=4, attr=0xb, range=[0x000000007ce16000-0x000000007ce1c000) (0MB) mem24: type=7, attr=0xb, range=[0x000000007ce1c000-0x000000007ce20000) (0MB) mem25: type=4, attr=0xb, range=[0x000000007ce20000-0x000000007ce22000) (0MB) mem26: type=7, attr=0xb, range=[0x000000007ce22000-0x000000007ce2a000) (0MB) mem27: type=4, attr=0xb, range=[0x000000007ce2a000-0x000000007d001000) (1MB) mem28: type=7, attr=0xb, range=[0x000000007d001000-0x000000007d002000) (0MB) mem29: type=4, attr=0xb, range=[0x000000007d002000-0x000000007d004000) (0MB) mem30: type=7, attr=0xb, range=[0x000000007d004000-0x000000007d026000) (0MB) mem31: type=4, attr=0xb, range=[0x000000007d026000-0x000000007d068000) (0MB) mem32: type=7, attr=0xb, range=[0x000000007d068000-0x000000007d069000) (0MB) mem33: type=4, attr=0xb, range=[0x000000007d069000-0x000000007d37e000) (3MB) mem34: type=7, attr=0xb, range=[0x000000007d37e000-0x000000007d700000) (3MB) mem35: type=3, attr=0xb, range=[0x000000007d700000-0x000000007d77e000) (0MB) mem36: type=7, attr=0xb, range=[0x000000007d77e000-0x000000007d8b4000) (1MB) mem37: type=6, attr=0x8000000000000009, range=[0x000000007d8b4000-0x000000007d900000) (0MB) mem38: type=3, attr=0xb, range=[0x000000007d900000-0x000000007f980000) (32MB) mem39: type=7, attr=0xb, range=[0x000000007f980000-0x000000007fa00000) (0MB) mem40: type=5, attr=0x8000000000000009, range=[0x000000007fa00000-0x000000007fe00000) (4MB) mem41: type=13, attr=0x8000000000000009, range=[0x000000007fe00000-0x000000007fe48000) (0MB) mem42: type=5, attr=0x8000000000000009, range=[0x000000007fe48000-0x000000007fea0000) (0MB) mem43: type=7, attr=0xb, range=[0x000000007fea0000-0x000000007feda000) (0MB) mem44: type=5, attr=0x8000000000000009, range=[0x000000007feda000-0x000000007ff46000) (0MB) mem45: type=6, attr=0x8000000000000009, range=[0x000000007ff46000-0x0000000080000000) (0MB) mem46: type=11, attr=0x1, range=[0x00000000fe000000-0x00000000ff000000) (16MB) mem47: type=6, attr=0x8000000000000001, range=[0x00000000ff000000-0x0000000100000000) (16MB) mem48: type=11, attr=0x8000000000000001, range=[0x00000ffff8000000-0x00000ffffc000000) (64MB) mem49: type=12, attr=0x8000000000000001, range=[0x00000ffffc000000-0x0000100000000000) (64MB) CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) booting generic kernel on platform dig Early serial console at I/O port 0x2f8 (options '115200n8') Initial ramdisk at: 0xe00000001f580000 (10739200 bytes) SAL 3.20: Intel Corp SR870BH2 version 3.0 SAL Platform features: BusLock SAL: AP wakeup using external interrupt vector 0xf0 No logical to physical processor mapping available CPU 0: mapping PAL code [0x7fe00000-0x7fe48000) into [0xe00000007f000000-0xe000000080000000) iosapic_system_init: Disabling PC-AT compatible 8259 interrupts ACPI: Local APIC address c0000000fee00000 PLATFORM int CPEI (0x3): GSI 22 (level, low) -> CPU 0 (0x0100) vector 30 register_intr: changing vector 39 from IO-SAPIC-edge to IO-SAPIC-level 2 CPUs available, 2 CPUs total MCA related initialization done Virtual mem_map starts at 0xa0007fffffc80000 Zone PFN ranges: DMA 16846 -> 262144 Normal 262144 -> 262144 early_node_map[8] active PFN ranges 0: 16384 -> 16845 0: 16846 -> 16848 0: 16849 -> 32096 0: 32752 -> 32753 0: 32754 -> 32755 0: 32756 -> 32757 0: 32758 -> 32761 0: 32762 -> 32768 SMP: Allowing 2 CPUs, 0 hotplug CPUs Built 1 zonelists. Total pages: 15261 Kernel command line: phys_efi clock=pit ip=on apm=power-off console=tty0 console=uart,io,0x2f8,115200n8 init 1 irqpoll maxcpus=1 elfcorehdr=524176K max_addr=512M min_addr=256M Warning! clock= boot option is deprecated. Use clocksource=xyz Misrouted IRQ fixup and polling support enabled This may significantly impact system performance PID hash table entries: 1024 (order: 10, 8192 bytes) Console: colour VGA+ 80x25 Placing software IO TLB between 0x148dc000 - 0x188dc000 Bad page state in process 'swapper' page:a0007fffffe3fc80 flags:0x0000000000000000 mapping:0000000000000000 mapcount:1 count:0 Trying to fix it up, but a reboot is needed Backtrace: Unable to handle kernel NULL pointer dereference (address 0000000000000000) swapper[0]: Oops 8813272891392 [1] Modules linked in: Pid: 0, CPU 0, comm: swapper psr : 00001010084a2010 ifs : 8000000000000308 ip : [<a000000100135a00>] Not tainted ip is at kmem_cache_alloc+0xa0/0x160 unat: 0000000000000000 pfs : 0000000000000793 rsc : 0000000000000003 rnat: 0000000000000000 bsps: 0000000000000000 pr : 0000000000026959 ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70433f csd : 0000000000000000 ssd : 0000000000000000 b0 : a00000010003e960 b6 : a00000010003f740 b7 : a00000010000d090 f6 : 1003edb67405daa9195d6 f7 : 1003e9e3779b97f4a7c16 f8 : 1003e0a000000100012a1 f9 : 1003e000000000000007f f10 : 1003e0000000000000379 f11 : 1003e6db6db6db6db6db7 r1 : a000000100743a60 r2 : 0000000000000000 r3 : a000000100450018 r8 : 0000000000000000 r9 : 0000000000000000 r10 : 0000000000000000 r11 : 0000000000000000 r12 : a000000100457510 r13 : a000000100450000 r14 : 0000000000000000 r15 : 0000000012000000 r16 : a0000001004575a0 r17 : a000000100450fa4 r18 : a0000001004d6c78 r19 : a00000010045759c r20 : a000000100457598 r21 : 000000007fffffff r22 : 0000000000000000 r23 : a000000100012a10 r24 : a0000001000129c0 r25 : a000000100000000 r26 : a0000001004e3d68 r27 : a000000100544518 r28 : a0000001004ddfe0 r29 : a0000001004ddfd0 r30 : 00000000000000ce r31 : 0000000000012a60
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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