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Message-Id: <200608250829.46066.ak@suse.de>
Date:	Fri, 25 Aug 2006 08:29:46 +0200
From:	Andi Kleen <ak@...e.de>
To:	kmannth@...ibm.com
Cc:	lkml <linux-kernel@...r.kernel.org>, andrew <akpm@...l.org>,
	Vivek goyal <vgoyal@...ibm.com>
Subject: Re: [Bug] 2.6.18-rc4-mm2 panic in __unix_insert_socket x86_64

On Friday 25 August 2006 04:20, keith mannthey wrote:
> On Tue, 2006-08-22 at 17:39 -0700, keith mannthey wrote:
> > Hello all,
> >   Something from mm1 to mm2 brought this bug out. I didn't see any
> > change in the unix socket code so I am not sure where to start. I am
> > going to start bisecting patches. 2.6.18-rc4-mm1 was working as
> > expected.  I have already stepped around afs and smp alternatives errors
> > but I haven't seen any errors related to this posted yet.
> 
> 
> Ok finally finished all the rebuilds/reboots needed find the trouble
> patch.  What seems to be causing the problem is listed as 
> 
> Re-positioning the bss segment   or 
> x86_64-mm-re-positioning-the-bss-segment.patch
> 
> It seems something is getting trampled.  Thoughts?

Hmm, it seems to be outside _edata now. There are a couple of references,
but I'm not sure they actually matter

arch/x86_64/kernel/setup.c:370: init_mm.end_data = (unsigned long) &_edata;
arch/x86_64/kernel/setup.c:376: data_resource.end = virt_to_phys(&_edata)-1;
arch/x86_64/mm/init.c:616:      datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
arch/x86_64/kernel/vmlinux.lds.S:68:  _edata = .;                       /* End of data section */
arch/x86_64/boot/compressed/head.S:61:  movl $_edata,%edi

init_mm shouldn't matter here. Maybe it not being reserved
as a resource had a bad side effect though, although I would 
have thought that the rest of the kernel code would have been 
reserved anyways (e.g. init data cannot be overwritten by 
resources either). That's probably a bug, but a unrelated one.

I suppose the patch has broken /proc/kcore at least too according
to the mm/init.c reference. I removed it for now.

Thanks for tracking it down.
-andi


> 
> Thanks,
>   Keith 
> 
> >  Any ideas?
> > 
> > Unable to handle kernel NULL pointer dereference at 0000000000000007
> > RIP:
> >  [<ffffffff803d45b0>] __unix_insert_socket+0x49/0x5a
> > PGD 115c934067 PUD 115c935067 PMD 0
> > Oops: 0002 [1] SMP
> > last sysfs file:
> > CPU 14
> > Modules linked in:
> > Pid: 1, comm: init Not tainted 2.6.18-rc4-mm2-smp #3
> > RIP: 0010:[<ffffffff803d45b0>]  [<ffffffff803d45b0>]
> > __unix_insert_socket+0x49/0x5a
> > RSP: 0018:ffff810460605eb8  EFLAGS: 00010286
> > RAX: ffffffffffffffff RBX: ffff81115c171c80 RCX: 0000000000000000
> > RDX: ffff81115c171c88 RSI: ffff81115c171c80 RDI: ffffffff806656e0
> > RBP: ffffffff806656e0 R08: ffff81115c069200 R09: ffff8110700b4000
> > R10: 0000000000000000 R11: 0000000000000002 R12: ffff81115c170d00
> > R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
> > FS:  00002b793a4fd6d0(0000) GS:ffff81115c910e40(0000)
> > knlGS:0000000000000000
> > CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > CR2: 0000000000000007 CR3: 000000115c92d000 CR4: 00000000000006e0
> > Process init (pid: 1, threadinfo ffff810460604000, task
> > ffff81115cb10040)
> > Stack:  0000000100000001 00000000ffffffff ffff81115c171c80
> > ffffffff803d58e9
> >  ffffffff8045bb30 0000000180298f61 ffffffff80498080 0000000000000001
> >  ffff81115c170d00 ffffffff803d595d 0000000000000004 ffffffff80376061
> > Call Trace:
> >  [<ffffffff803d58e9>] unix_create1+0xf3/0x107
> >  [<ffffffff803d595d>] unix_create+0x60/0x6b
> >  [<ffffffff80376061>] __sock_create+0x12f/0x227
> >  [<ffffffff80376429>] sys_socket+0xf/0x37
> >  [<ffffffff8020968e>] system_call+0x7e/0x83
> > 
> > 
> > Code: 48 89 50 08 48 89 55 00 48 89 6a 08 41 58 5b 5d c3 c7 47 08
> > RIP  [<ffffffff803d45b0>] __unix_insert_socket+0x49/0x5a
> >  RSP <ffff810460605eb8>
> > CR2: 0000000000000007
> >  <0>Kernel panic - not syncing: Attempted to kill init!
> > 
> > 
> > See full dmesg below. 
> > 
> > disabling early console
> > Linux version 2.6.18-rc4-mm2-smp (root@...3a153) (gcc version 4.1.0
> > (SUSE Linux)) #3 SMP Tue Aug 22 17:58:53 EDT 2006
> > Command line: root=/dev/sda3
> > ip=9.47.66.153:9.47.66.169:9.47.66.1:255.255.255.0 resume=/dev/sda2
> > showopts earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0
> > debug
> > BIOS-provided physical RAM map:
> >  BIOS-e820: 0000000000000000 - 0000000000098400 (usable)
> >  BIOS-e820: 0000000000098400 - 00000000000a0000 (reserved)
> >  BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
> >  BIOS-e820: 0000000000100000 - 000000007ff85e00 (usable)
> >  BIOS-e820: 000000007ff85e00 - 000000007ff98880 (ACPI data)
> >  BIOS-e820: 000000007ff98880 - 0000000080000000 (reserved)
> >  BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
> >  BIOS-e820: 0000000100000000 - 0000000470000000 (usable)
> >  BIOS-e820: 0000001070000000 - 0000001160000000 (usable)
> > DMI 2.3 present.
> > ACPI: RSDP (v000 IBM                                   ) @
> > 0x00000000000fdcf0
> > ACPI: RSDT (v001 IBM    EXA01ZEU 0x00001000 IBM  0x45444f43) @
> > 0x000000007ff98800
> > ACPI: FADT (v001 IBM    EXA01ZEU 0x00001000 IBM  0x45444f43) @
> > 0x000000007ff98780
> > ACPI: MADT (v001 IBM    EXA01ZEU 0x00001000 IBM  0x45444f43) @
> > 0x000000007ff98600
> > ACPI: SRAT (v001 IBM    EXA01ZEU 0x00001000 IBM  0x45444f43) @
> > 0x000000007ff983c0
> > ACPI: HPET (v001 IBM    EXA01ZEU 0x00001000 IBM  0x45444f43) @
> > 0x000000007ff98380
> > ACPI: SSDT (v001 IBM    VIGSSDT0 0x00001000 INTL 0x20030122) @
> > 0x000000007ff90780
> > ACPI: SSDT (v001 IBM    VIGSSDT1 0x00001000 INTL 0x20030122) @
> > 0x000000007ff88bc0
> > ACPI: DSDT (v001 IBM    EXA01ZEU 0x00001000 INTL 0x20030122) @
> > 0x0000000000000000
> > SRAT: PXM 0 -> APIC 0 -> Node 0
> > SRAT: PXM 0 -> APIC 1 -> Node 0
> > SRAT: PXM 0 -> APIC 2 -> Node 0
> > SRAT: PXM 0 -> APIC 3 -> Node 0
> > SRAT: PXM 0 -> APIC 38 -> Node 0
> > SRAT: PXM 0 -> APIC 39 -> Node 0
> > SRAT: PXM 0 -> APIC 36 -> Node 0
> > SRAT: PXM 0 -> APIC 37 -> Node 0
> > SRAT: PXM 1 -> APIC 64 -> Node 1
> > SRAT: PXM 1 -> APIC 65 -> Node 1
> > SRAT: PXM 1 -> APIC 66 -> Node 1
> > SRAT: PXM 1 -> APIC 67 -> Node 1
> > SRAT: PXM 1 -> APIC 102 -> Node 1
> > SRAT: PXM 1 -> APIC 103 -> Node 1
> > SRAT: PXM 1 -> APIC 100 -> Node 1
> > SRAT: PXM 1 -> APIC 101 -> Node 1
> > SRAT: Node 0 PXM 0 0-80000000
> > SRAT: Node 0 PXM 0 0-470000000
> > SRAT: Node 1 PXM 1 1070000000-1160000000
> > NUMA: Using 36 for the hash shift.
> > Bootmem setup node 0 0000000000000000-0000000470000000
> > Bootmem setup node 1 0000001070000000-0000001160000000
> > On node 0 totalpages: 4063507
> >   DMA zone: 2518 pages, LIFO batch:0
> >   DMA32 zone: 505789 pages, LIFO batch:31
> >   Normal zone: 3555200 pages, LIFO batch:31
> > On node 1 totalpages: 969600
> >   Normal zone: 969600 pages, LIFO batch:31
> > ACPI: PM-Timer IO Port: 0x9c
> > ACPI: Local APIC address 0xfee00000
> > ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> > Processor #0 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
> > Processor #1 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
> > Processor #2 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] enabled)
> > Processor #3 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x04] lapic_id[0x26] enabled)
> > Processor #38 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x05] lapic_id[0x27] enabled)
> > Processor #39 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x06] lapic_id[0x24] enabled)
> > Processor #36 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x07] lapic_id[0x25] enabled)
> > Processor #37 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x10] lapic_id[0x40] enabled)
> > Processor #64 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x11] lapic_id[0x41] enabled)
> > Processor #65 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x12] lapic_id[0x42] enabled)
> > Processor #66 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x13] lapic_id[0x43] enabled)
> > Processor #67 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x14] lapic_id[0x66] enabled)
> > Processor #102 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x15] lapic_id[0x67] enabled)
> > Processor #103 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x16] lapic_id[0x64] enabled)
> > Processor #100 15:4 APIC version 20
> > ACPI: LAPIC (acpi_id[0x17] lapic_id[0x65] enabled)
> > Processor #101 15:4 APIC version 20
> > ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x04] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x05] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x07] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x10] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x11] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x12] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x13] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x14] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x15] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x16] dfl dfl lint[0x1])
> > ACPI: LAPIC_NMI (acpi_id[0x17] dfl dfl lint[0x1])
> > ACPI: IOAPIC (id[0x0f] address[0xfec00000] gsi_base[0])
> > IOAPIC[0]: apic_id 15, version 17, address 0xfec00000, GSI 0-35
> > ACPI: IOAPIC (id[0x0e] address[0xfec01000] gsi_base[36])
> > IOAPIC[1]: apic_id 14, version 17, address 0xfec01000, GSI 36-71
> > ACPI: IOAPIC (id[0x0d] address[0xfec02000] gsi_base[72])
> > IOAPIC[2]: apic_id 13, version 17, address 0xfec02000, GSI 72-107
> > ACPI: IOAPIC (id[0x0c] address[0xfec03000] gsi_base[108])
> > IOAPIC[3]: apic_id 12, version 17, address 0xfec03000, GSI 108-143
> > ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> > ACPI: INT_SRC_OVR (bus 0 bus_irq 8 global_irq 8 low edge)
> > ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 low edge)
> > ACPI: IRQ0 used by override.
> > ACPI: IRQ2 used by override.
> > ACPI: IRQ8 used by override.
> > ACPI: IRQ9 used by override.
> > ACPI: IRQ14 used by override.
> > Setting APIC routing to clustered
> > ACPI: HPET id: 0x10142201 base: 0xfde84000
> > Using ACPI (MADT) for SMP configuration information
> > Nosave address range: 0000000000098000 - 0000000000099000
> > Nosave address range: 0000000000099000 - 00000000000a0000
> > Nosave address range: 00000000000a0000 - 00000000000e0000
> > Nosave address range: 00000000000e0000 - 0000000000100000
> > Nosave address range: 000000007ff85000 - 000000007ff86000
> > Nosave address range: 000000007ff86000 - 000000007ff98000
> > Nosave address range: 000000007ff98000 - 000000007ff99000
> > Nosave address range: 000000007ff99000 - 0000000080000000
> > Nosave address range: 0000000080000000 - 00000000fec00000
> > Nosave address range: 00000000fec00000 - 0000000100000000
> > Nosave address range: 0000000470000000 - 0000001070000000
> > Allocating PCI resources starting at 88000000 (gap: 80000000:7ec00000)
> > SMP: Allowing 16 CPUs, 0 hotplug CPUs
> > PERCPU: Allocating 49792 bytes of per cpu data
> > Built 2 zonelists.  Total pages: 5033107
> > Kernel command line: root=/dev/sda3
> > ip=9.47.66.153:9.47.66.169:9.47.66.1:255.255.255.0 resume=/dev/sda2
> > showopts earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0
> > debug
> > Initializing CPU#0
> > PID hash table entries: 4096 (order: 12, 32768 bytes)
> > disabling early console
> > Console: colour VGA+ 80x25
> > Dentry cache hash table entries: 4194304 (order: 13, 33554432 bytes)
> > Inode-cache hash table entries: 2097152 (order: 12, 16777216 bytes)
> > Checking aperture...
> > PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
> > Placing software IO TLB between 0x409d000 - 0x809d000
> > Memory: 20013348k/72876032k available (1922k kernel code, 432976k
> > reserved, 928k data, 184k init)
> > Calibrating delay using timer specific routine.. 6011.54 BogoMIPS
> > (lpj=12023094)Security Framework v1.0.0 initialized
> > Mount-cache hash table entries: 256
> > CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 0/0 -> Node 0
> > using mwait in idle threads.
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 0
> > CPU0: Thermal monitoring enabled (TM1)
> > SMP alternatives: switching to UP code
> > ACPI: Core revision 20060707
> > ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> > Using local APIC timer interrupts.
> > result 10425670
> > Detected 10.425 MHz APIC timer.
> > SMP alternatives: switching to SMP code
> > Booting processor 1/16 APIC 0x1
> > Initializing CPU#1
> > Calibrating delay using timer specific routine.. 6005.42 BogoMIPS
> > (lpj=12010849)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 1/1 -> Node 0
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 0
> > CPU1: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 1: Syncing TSC to CPU 0.
> > CPU 1: synchronized TSC with CPU 0 (last diff -103 cycles, maxerr 936
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 2/16 APIC 0x2
> > Initializing CPU#2
> > Calibrating delay using timer specific routine.. 6005.62 BogoMIPS
> > (lpj=12011251)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 2/2 -> Node 0
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 1
> > CPU2: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 2: Syncing TSC to CPU 0.
> > CPU 2: synchronized TSC with CPU 0 (last diff 90 cycles, maxerr 1620
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 3/16 APIC 0x3
> > Initializing CPU#3
> > Calibrating delay using timer specific routine.. 6005.69 BogoMIPS
> > (lpj=12011390)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 3/3 -> Node 0
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 1
> > CPU3: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 3: Syncing TSC to CPU 0.
> > CPU 3: synchronized TSC with CPU 0 (last diff 40 cycles, maxerr 1611
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 4/16 APIC 0x26
> > Initializing CPU#4
> > Calibrating delay using timer specific routine.. 6005.56 BogoMIPS
> > (lpj=12011139)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 4/26 -> Node 0
> > CPU: Physical Processor ID: 9
> > CPU: Processor Core ID: 1
> > CPU4: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 4: Syncing TSC to CPU 0.
> > CPU 4: synchronized TSC with CPU 0 (last diff -23 cycles, maxerr 1593
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 5/16 APIC 0x27
> > Initializing CPU#5
> > Calibrating delay using timer specific routine.. 6005.64 BogoMIPS
> > (lpj=12011290)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 5/27 -> Node 0
> > CPU: Physical Processor ID: 9
> > CPU: Processor Core ID: 1
> > CPU5: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 5: Syncing TSC to CPU 0.
> > CPU 5: synchronized TSC with CPU 0 (last diff 72 cycles, maxerr 1584
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 6/16 APIC 0x24
> > Initializing CPU#6
> > Calibrating delay using timer specific routine.. 6005.71 BogoMIPS
> > (lpj=12011431)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 6/24 -> Node 0
> > CPU: Physical Processor ID: 9
> > CPU: Processor Core ID: 0
> > CPU6: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 6: Syncing TSC to CPU 0.
> > CPU 6: synchronized TSC with CPU 0 (last diff 40 cycles, maxerr 1593
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 7/16 APIC 0x25
> > Initializing CPU#7
> > Calibrating delay using timer specific routine.. 6005.73 BogoMIPS
> > (lpj=12011473)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 7/25 -> Node 0
> > CPU: Physical Processor ID: 9
> > CPU: Processor Core ID: 0
> > CPU7: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 7: Syncing TSC to CPU 0.
> > CPU 7: synchronized TSC with CPU 0 (last diff 144 cycles, maxerr 1782
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 8/16 APIC 0x40
> > Initializing CPU#8
> > Calibrating delay using timer specific routine.. 6005.91 BogoMIPS
> > (lpj=12011838)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 8/40 -> Node 1
> > CPU: Physical Processor ID: 16
> > CPU: Processor Core ID: 0
> > CPU8: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 8: Syncing TSC to CPU 0.
> > CPU 8: synchronized TSC with CPU 0 (last diff 102 cycles, maxerr 4356
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 9/16 APIC 0x41
> > Initializing CPU#9
> > Calibrating delay using timer specific routine.. 6005.99 BogoMIPS
> > (lpj=12011998)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 9/41 -> Node 1
> > CPU: Physical Processor ID: 16
> > CPU: Processor Core ID: 0
> > CPU9: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 9: Syncing TSC to CPU 0.
> > CPU 9: synchronized TSC with CPU 0 (last diff 283 cycles, maxerr 4275
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 10/16 APIC 0x42
> > Initializing CPU#10
> > Calibrating delay using timer specific routine.. 6005.76 BogoMIPS
> > (lpj=12011532)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 10/42 -> Node 1
> > CPU: Physical Processor ID: 16
> > CPU: Processor Core ID: 1
> > CPU10: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 10: Syncing TSC to CPU 0.
> > CPU 10: synchronized TSC with CPU 0 (last diff 272 cycles, maxerr 4338
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 11/16 APIC 0x43
> > Initializing CPU#11
> > Calibrating delay using timer specific routine.. 6005.85 BogoMIPS
> > (lpj=12011702)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 11/43 -> Node 1
> > CPU: Physical Processor ID: 16
> > CPU: Processor Core ID: 1
> > CPU11: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 11: Syncing TSC to CPU 0.
> > CPU 11: synchronized TSC with CPU 0 (last diff 125 cycles, maxerr 4716
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 12/16 APIC 0x66
> > Initializing CPU#12
> > Calibrating delay using timer specific routine.. 6005.93 BogoMIPS
> > (lpj=12011875)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 12/66 -> Node 1
> > CPU: Physical Processor ID: 25
> > CPU: Processor Core ID: 1
> > CPU12: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 12: Syncing TSC to CPU 0.
> > CPU 12: synchronized TSC with CPU 0 (last diff -14 cycles, maxerr 4689
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 13/16 APIC 0x67
> > Initializing CPU#13
> > Calibrating delay using timer specific routine.. 6006.06 BogoMIPS
> > (lpj=12012123)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 13/67 -> Node 1
> > CPU: Physical Processor ID: 25
> > CPU: Processor Core ID: 1
> > CPU13: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 13: Syncing TSC to CPU 0.
> > CPU 13: synchronized TSC with CPU 0 (last diff 110 cycles, maxerr 4725
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 14/16 APIC 0x64
> > Initializing CPU#14
> > Calibrating delay using timer specific routine.. 6005.67 BogoMIPS
> > (lpj=12011349)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 14/64 -> Node 1
> > CPU: Physical Processor ID: 25
> > CPU: Processor Core ID: 0
> > CPU14: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 14: Syncing TSC to CPU 0.
> > CPU 14: synchronized TSC with CPU 0 (last diff 64 cycles, maxerr 4698
> > cycles)
> > SMP alternatives: switching to SMP code
> > Booting processor 15/16 APIC 0x65
> > Initializing CPU#15
> > Calibrating delay using timer specific routine.. 6005.80 BogoMIPS
> > (lpj=12011600)CPU: Trace cache: 12K uops, L1 D cache: 16K
> > CPU: L2 cache: 2048K
> > CPU 15/65 -> Node 1
> > CPU: Physical Processor ID: 25
> > CPU: Processor Core ID: 0
> > CPU15: Thermal monitoring enabled (TM1)
> >                    Genuine Intel(R) CPU 3.00GHz stepping 08
> > CPU 15: Syncing TSC to CPU 0.
> > CPU 15: synchronized TSC with CPU 0 (last diff 275 cycles, maxerr 4356
> > cycles)
> > Brought up 16 CPUs
> > testing NMI watchdog ... OK.
> > time.c: Using 333.333333 MHz WALL PIT GTOD PIT/HPET timer.
> > time.c: Detected 3002.613 MHz processor.
> > migration_cost=15,1006,15011
> > checking if image is initramfs... it is
> > Freeing initrd memory: 2769k freed
> > NET: Registered protocol family 16
> > ACPI: bus type pci registered
> > PCI: Using configuration type 1
> > ACPI: Interpreter enabled
> > ACPI: Using IOAPIC for interrupt routing
> > ACPI: PCI Root Bridge [VP00] (0000:00)
> > PCI: Probing PCI hardware (bus 00)
> > Boot video device is 0000:00:01.0
> > PCI: Ignoring BAR0-3 of IDE controller 0000:00:0f.1
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP00._PRT]
> > ACPI: PCI Root Bridge [VP01] (0000:01)
> > PCI: Probing PCI hardware (bus 01)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP01._PRT]
> > ACPI: PCI Root Bridge [VP02] (0000:02)
> > PCI: Probing PCI hardware (bus 02)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP02._PRT]
> > ACPI: PCI Root Bridge [VP03] (0000:04)
> > PCI: Probing PCI hardware (bus 04)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP03._PRT]
> > ACPI: PCI Root Bridge [VP04] (0000:06)
> > PCI: Probing PCI hardware (bus 06)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP04._PRT]
> > ACPI: PCI Root Bridge [VP05] (0000:08)
> > PCI: Probing PCI hardware (bus 08)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP05._PRT]
> > ACPI: PCI Root Bridge [VP06] (0000:0a)
> > PCI: Probing PCI hardware (bus 0a)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP06._PRT]
> > ACPI: PCI Root Bridge [VP07] (0000:0c)
> > PCI: Probing PCI hardware (bus 0c)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP07._PRT]
> > ACPI: PCI Root Bridge [VP10] (0000:0e)
> > PCI: Probing PCI hardware (bus 0e)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP10._PRT]
> > ACPI: PCI Root Bridge [VP11] (0000:0f)
> > PCI: Probing PCI hardware (bus 0f)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP11._PRT]
> > ACPI: PCI Root Bridge [VP12] (0000:10)
> > PCI: Probing PCI hardware (bus 10)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP12._PRT]
> > ACPI: PCI Root Bridge [VP13] (0000:12)
> > PCI: Probing PCI hardware (bus 12)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP13._PRT]
> > ACPI: PCI Root Bridge [VP14] (0000:14)
> > PCI: Probing PCI hardware (bus 14)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP14._PRT]
> > ACPI: PCI Root Bridge [VP15] (0000:16)
> > PCI: Probing PCI hardware (bus 16)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP15._PRT]
> > ACPI: PCI Root Bridge [VP16] (0000:18)
> > PCI: Probing PCI hardware (bus 18)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP16._PRT]
> > ACPI: PCI Root Bridge [VP17] (0000:1a)
> > PCI: Probing PCI hardware (bus 1a)
> > ACPI: PCI Interrupt Routing Table [\_SB_.VP17._PRT]
> > PCI: Using ACPI for IRQ routing
> > PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a
> > report
> > hpet0: at MMIO 0xfde84000, IRQs 2, 8, 0
> > hpet0: 3 64-bit timers, 3707069 Hz
> > PCI-GART: No AMD northbridge found.
> > NET: Registered protocol family 2
> > IP route cache hash table entries: 524288 (order: 10, 4194304 bytes)
> > TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
> > TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
> > TCP: Hash tables configured (established 262144 bind 65536)
> > TCP reno registered
> > audit: initializing netlink socket (disabled)
> > audit(1156286435.128:1): initialized
> > Total HugeTLB memory allocated, 0
> > VFS: Disk quotas dquot_6.5.1
> > Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> > io scheduler noop registered
> > io scheduler anticipatory registered
> > io scheduler deadline registered
> > io scheduler cfq registered (default)
> > Hotplug Mem Device
> > System RAM resource 400000000 - 46fffffff cannot be added
> > System RAM resource 380000000 - 3ffffffff cannot be added
> > System RAM resource 300000000 - 37fffffff cannot be added
> > System RAM resource 280000000 - 2ffffffff cannot be added
> > System RAM resource 200000000 - 27fffffff cannot be added
> > System RAM resource 180000000 - 1ffffffff cannot be added
> > System RAM resource 100000000 - 17fffffff cannot be added
> > System RAM resource 100000 - 7fffffff cannot be added
> > ACPI: add_memory failed
> > Hotplug Mem Device
> > System RAM resource 10f0000000 - 115fffffff cannot be added
> > System RAM resource 1070000000 - 10efffffff cannot be added
> > ACPI: add_memory failed
> > Real Time Clock Driver v1.12ac
> > Non-volatile memory driver v1.2
> > Linux agpgart interface v0.101 (c) Dave Jones
> > Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing
> > disabled
> > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> > serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> > RAMDISK driver initialized: 16 RAM disks of 128000K size 1024 blocksize
> > serio: i8042 AUX port at 0x60,0x64 irq 12
> > serio: i8042 KBD port at 0x60,0x64 irq 1
> > mice: PS/2 mouse device common for all mice
> > input: PC Speaker as /class/input/input0
> > input: AT Translated Set 2 keyboard as /class/input/input1
> > md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
> > md: bitmap version 4.39
> > NET: Registered protocol family 1
> > ACPI: (supports S0 S5)
> > input: ImExPS/2 Generic Explorer Mouse as /class/input/input2
> > IP-Config: No network devices available.
> > Freeing unused kernel memory: 184k freed
> > Unable to handle kernel NULL pointer dereference at 0000000000000007
> > RIP:
> >  [<ffffffff803d45b0>] __unix_insert_socket+0x49/0x5a
> > PGD 115c934067 PUD 115c935067 PMD 0
> > Oops: 0002 [1] SMP
> > last sysfs file:
> > CPU 14
> > Modules linked in:
> > Pid: 1, comm: init Not tainted 2.6.18-rc4-mm2-smp #3
> > RIP: 0010:[<ffffffff803d45b0>]  [<ffffffff803d45b0>]
> > __unix_insert_socket+0x49/0x5a
> > RSP: 0018:ffff810460605eb8  EFLAGS: 00010286
> > RAX: ffffffffffffffff RBX: ffff81115c171c80 RCX: 0000000000000000
> > RDX: ffff81115c171c88 RSI: ffff81115c171c80 RDI: ffffffff806656e0
> > RBP: ffffffff806656e0 R08: ffff81115c069200 R09: ffff8110700b4000
> > R10: 0000000000000000 R11: 0000000000000002 R12: ffff81115c170d00
> > R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
> > FS:  00002b793a4fd6d0(0000) GS:ffff81115c910e40(0000)
> > knlGS:0000000000000000
> > CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > CR2: 0000000000000007 CR3: 000000115c92d000 CR4: 00000000000006e0
> > Process init (pid: 1, threadinfo ffff810460604000, task
> > ffff81115cb10040)
> > Stack:  0000000100000001 00000000ffffffff ffff81115c171c80
> > ffffffff803d58e9
> >  ffffffff8045bb30 0000000180298f61 ffffffff80498080 0000000000000001
> >  ffff81115c170d00 ffffffff803d595d 0000000000000004 ffffffff80376061
> > Call Trace:
> >  [<ffffffff803d58e9>] unix_create1+0xf3/0x107
> >  [<ffffffff803d595d>] unix_create+0x60/0x6b
> >  [<ffffffff80376061>] __sock_create+0x12f/0x227
> >  [<ffffffff80376429>] sys_socket+0xf/0x37
> >  [<ffffffff8020968e>] system_call+0x7e/0x83
> > 
> > 
> > Code: 48 89 50 08 48 89 55 00 48 89 6a 08 41 58 5b 5d c3 c7 47 08
> > RIP  [<ffffffff803d45b0>] __unix_insert_socket+0x49/0x5a
> >  RSP <ffff810460605eb8>
> > CR2: 0000000000000007
> >  <0>Kernel panic - not syncing: Attempted to kill init!
> > 
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