Panic on boot for x86_64

[Martin Bligh]

x86_64 seems to panic on boot, since 2.6.26-git2 (or maybe -git1,
which wouldn't compile)
2.6.26 works.

http://test.kernel.org/results/IBM/186461/debug/console

kernel BUG at arch/x86/kernel/io_apic_64.c:356!
invalid opcode: 0000 [1] SMP
CPU 24
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.27-rc1-git2-autotest #1
RIP: 0010:[<ffffffff8021bb1a>]  [<ffffffff8021bb1a>] add_pin_to_irq+0x7a/0x90
RSP: 0018:ffff88032e4b9b40  EFLAGS: 00010216
RAX: 00000000000000f0 RBX: 00000000000000f0 RCX: 0000000000000001
RDX: 0000000000000018 RSI: 0000000000000006 RDI: 00000000000000f0
RBP: 0000000000000006 R08: 0000000000000018 R09: 0000000000000006
R10: 0000000000000008 R11: ffffffff8038f8dd R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000018 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880bfe733540(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff88032e4b8000, task ffff880bfe4ca050)
Stack:  ffff88032e4b9be0 ffffffff8021bbae 00000000000000f0 0000000000000001
 0000000000000000 ffff88032e4b9c0c 00000000000000f0 ffffffff80218d81
 00000000000000f0 0000000000000000 0000000000000001 ffffffff80218e0c
Call Trace:
 [<ffffffff8021bbae>] ? io_apic_set_pci_routing+0x7e/0xa0
 [<ffffffff80218d81>] ? mp_register_gsi+0xb1/0xd0
 [<ffffffff80218e0c>] ? acpi_register_gsi+0x6c/0x70
 [<ffffffff8038fb30>] ? acpi_pci_irq_enable+0x178/0x260
 [<ffffffff8038f8dd>] ? acpi_pci_allocate_irq+0x0/0x4c
 [<ffffffff8036d257>] ? pci_enable_resources+0x27/0x160
 [<ffffffff80368a6a>] ? do_pci_enable_device+0x4a/0x70
 [<ffffffff80368ae1>] ? __pci_enable_device_flags+0x51/0x60
 [<ffffffff804dce18>] ? tg3_init_one+0x58/0x1640
 [<ffffffff8022a950>] ? default_wake_function+0x0/0x10
 [<ffffffff8022efa8>] ? set_cpus_allowed_ptr+0xe8/0x110
 [<ffffffff8036ae8f>] ? pci_device_probe+0xdf/0x130
 [<ffffffff803bf016>] ? driver_probe_device+0x96/0x1a0
 [<ffffffff803bf1a9>] ? __driver_attach+0x89/0x90
 [<ffffffff803bf120>] ? __driver_attach+0x0/0x90
 [<ffffffff803be68d>] ? bus_for_each_dev+0x4d/0x80
 [<ffffffff8028afa8>] ? kmem_cache_alloc+0xc8/0xf0
 [<ffffffff803beb7e>] ? bus_add_driver+0xae/0x220
 [<ffffffff803bf436>] ? driver_register+0x56/0x130
 [<ffffffff8036b148>] ? __pci_register_driver+0x68/0xb0
 [<ffffffff806cb610>] ? tg3_init+0x0/0x20
 [<ffffffff806ad5b1>] ? do_one_initcall+0x41/0x180
 [<ffffffff802d5798>] ? create_proc_entry+0x58/0xa0
 [<ffffffff8025eae4>] ? register_irq_proc+0xd4/0xf0
 [<ffffffff806adb53>] ? kernel_init+0x133/0x190
 [<ffffffff8020c529>] ? child_rip+0xa/0x11
 [<ffffffff806ada20>] ? kernel_init+0x0/0x190
 [<ffffffff8020c51f>] ? child_rip+0x0/0x11


Code: 89 05 3f 24 42 00 7f 29 48 0f bf c1 48 8d 14 00 48 c1 e0 03 48
29 d0 48 8d 90 c0 0e 73 80 66 89 32 66 44 89 42 02 48 83 c4 08 c3 <0f>
0b eb fe 66 90 48 c7 c7 28 a4 5c 80 31 c0 e8 b2 7d 01 00 66
RIP  [<ffffffff8021bb1a>] add_pin_to_irq+0x7a/0x90
 RSP <ffff88032e4b9b40>
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