Hi Stephen, This BUG_ON() with next-20080505 kernel is hit on x86_64 machine with 32 cpus. Kernel boots up when, passing noapic as boot parameter. kernel BUG at arch/x86/kernel/io_apic_64.c:353! invalid opcode: 0000 [1] SMP last sysfs file: CPU 24 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.26-rc1-next-20080505-autotest #1 RIP: 0010:[<ffffffff8021cfba>] [<ffffffff8021cfba>] add_pin_to_irq+0x7a/0x90 RSP: 0018:ffff81090e4cbb80 EFLAGS: 00010216 RAX: 00000000000000f0 RBX: 00000000000000f0 RCX: 0000000000000001 RDX: 0000000000000018 RSI: 0000000000000006 RDI: 00000000000000f0 RBP: 0000000000000006 R08: 0000000000000018 R09: 0000000000000006 R10: 0000000000000008 R11: ffffffff80394926 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000018 R15: ffff81090e4cbc24 FS: 0000000000000000(0000) GS:ffff810bfe7cf540(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 ffff81090e4ca000, task ffff81061e4ca050) Stack: 0000000000000006 ffffffff8021d04e 00000000000000f0 0000000000000001 0000000000000000 0000000000000000 ffff81090e4cbc20 ffffffff8021b290 00000000000000f0 0000000000000000 0000000000000001 ffffffff80219e8a Call Trace: [<ffffffff8021d04e>] io_apic_set_pci_routing+0x7e/0xb0 [<ffffffff8021b290>] mp_register_gsi+0xc0/0xe0 [<ffffffff80219e8a>] acpi_register_gsi+0x6a/0x70 [<ffffffff80394b50>] acpi_pci_irq_enable+0x14f/0x1f9 [<ffffffff80394926>] acpi_pci_allocate_irq+0x0/0x4c [<ffffffff8036e70a>] do_pci_enable_device+0x4a/0x70 [<ffffffff8036e781>] __pci_enable_device_flags+0x51/0x60 [<ffffffff804dac78>] tg3_init_one+0x58/0x15e0 [<ffffffff8022be40>] default_wake_function+0x0/0x10 [<ffffffff80231a50>] set_cpus_allowed_ptr+0xd0/0x100 [<ffffffff803703bf>] pci_device_probe+0xdf/0x130 [<ffffffff803c3526>] driver_probe_device+0x96/0x1a0 [<ffffffff803c36b9>] __driver_attach+0x89/0x90 [<ffffffff803c3630>] __driver_attach+0x0/0x90 [<ffffffff803c2b9d>] bus_for_each_dev+0x4d/0x80 [<ffffffff80292288>] kmem_cache_alloc+0xc8/0xf0 [<ffffffff803c308e>] bus_add_driver+0xae/0x220 [<ffffffff803c3946>] driver_register+0x56/0x130 [<ffffffff80370665>] __pci_register_driver+0x55/0xa0 [<ffffffff806a8a44>] kernel_init+0x154/0x2e0 [<ffffffff8020c3c8>] child_rip+0xa/0x12 [<ffffffff806a88f0>] kernel_init+0x0/0x2e0 [<ffffffff8020c3be>] child_rip+0x0/0x12 Code: 89 05 07 86 41 00 7f 29 48 0f bf c1 48 8d 14 00 48 c1 e0 03 48 29 d0 48 8d 90 20 10 72 80 66 89 32 66 44 89 42 02 48 83 c4 08 c3 <0f> 0b eb fe 66 90 48 c7 c7 38 34 5c 80 31 c0 e8 d2 9f 01 00 66 RIP [<ffffffff8021cfba>] add_pin_to_irq+0x7a/0x90 RSP <ffff81090e4cbb80> ---[ end trace d31308394cb604eb ]--- Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: swapper Tainted: G D 2.6.26-rc1-next-20080505-autotest #1 Call Trace: [<ffffffff80237026>] panic+0x86/0x170 [<ffffffff80237d8e>] printk+0x4e/0x60 [<ffffffff8023ad31>] do_exit+0x761/0x770 [<ffffffff8020c871>] oops_end+0xc1/0xd0 [<ffffffff8020ddf6>] do_invalid_op+0x86/0xa0 [<ffffffff8021cfba>] add_pin_to_irq+0x7a/0x90 [<ffffffff803ad724>] vt_console_print+0x224/0x2f0 [<ffffffff80373f60>] dummycon_dummy+0x0/0x10 [<ffffffff804ea179>] error_exit+0x0/0x51 [<ffffffff80394926>] acpi_pci_allocate_irq+0x0/0x4c [<ffffffff8021cfba>] add_pin_to_irq+0x7a/0x90 [<ffffffff8021d04e>] io_apic_set_pci_routing+0x7e/0xb0 [<ffffffff8021b290>] mp_register_gsi+0xc0/0xe0 [<ffffffff80219e8a>] acpi_register_gsi+0x6a/0x70 [<ffffffff80394b50>] acpi_pci_irq_enable+0x14f/0x1f9 [<ffffffff80394926>] acpi_pci_allocate_irq+0x0/0x4c [<ffffffff8036e70a>] do_pci_enable_device+0x4a/0x70 [<ffffffff8036e781>] __pci_enable_device_flags+0x51/0x60 [<ffffffff804dac78>] tg3_init_one+0x58/0x15e0 [<ffffffff8022be40>] default_wake_function+0x0/0x10 [<ffffffff80231a50>] set_cpus_allowed_ptr+0xd0/0x100 [<ffffffff803703bf>] pci_device_probe+0xdf/0x130 [<ffffffff803c3526>] driver_probe_device+0x96/0x1a0 [<ffffffff803c36b9>] __driver_attach+0x89/0x90 [<ffffffff803c3630>] __driver_attach+0x0/0x90 [<ffffffff803c2b9d>] bus_for_each_dev+0x4d/0x80 [<ffffffff80292288>] kmem_cache_alloc+0xc8/0xf0 [<ffffffff803c308e>] bus_add_driver+0xae/0x220 [<ffffffff803c3946>] driver_register+0x56/0x130 [<ffffffff80370665>] __pci_register_driver+0x55/0xa0 [<ffffffff806a8a44>] kernel_init+0x154/0x2e0 [<ffffffff8020c3c8>] child_rip+0xa/0x12 [<ffffffff806a88f0>] kernel_init+0x0/0x2e0 [<ffffffff8020c3be>] child_rip+0x0/0x12 -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. --
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