I got this on a dual P4 Xeon with HT. If anyone wants more information, let me know.
Creating /dev Starting udev input: AT Translated Set 2 keyboard on isa0060/serio0 atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly. atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly. ------------[ cut here ]------------ kernel BUG at kernel/sched.c:2597! invalid operand: 0000 [#1] PREEMPT SMP Modules linked in: CPU: 1 EIP: 0060:[<c0115324>] Not tainted VLI EFLAGS: 00010246 (2.6.12-rc2) EIP is at sub_preempt_count+0x35/0x3f eax: 00000100 ebx: c03a0394 ecx: c03a0370 edx: 00000001 esi: 00000000 edi: c01152db ebp: f7fd464c esp: f7fd464c ds: 007b es: 007b ss: 0068 Process udev (pid: 57, threadinfo=f7fd4000 task=f7fd5a40) Stack: f7fd4654 c034b416 f7fd466c c01342ec 00000217 f7fd4754 00000000 f7fd46b0 f7fd4678 c0112192 f7fd4754 f7fd4698 c0103eaa c0359df2 00000004 00000006 f7fd4754 00000000 c01040e0 f7fd474c c0104177 00000000 f7fd4754 00000000 Call Trace: [<c01039d3>] show_stack+0x94/0xca [<c0103bad>] show_registers+0x18b/0x225 [<c0103dcd>] die+0xfb/0x176 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b416>] _spin_unlock_irqrestore+0x24/0x4e [<c01342ec>] search_module_extables+0x78/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b099>] _spin_lock_irqsave+0x10/0x6f [<c0134289>] search_module_extables+0x15/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b099>] _spin_lock_irqsave+0x10/0x6f [<c0134289>] search_module_extables+0x15/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b099>] _spin_lock_irqsave+0x10/0x6f [<c0134289>] search_module_extables+0x15/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b099>] _spin_lock_irqsave+0x10/0x6f [<c0134289>] search_module_extables+0x15/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b099>] _spin_lock_irqsave+0x10/0x6f [<c0134289>] search_module_extables+0x15/0x82 [<c0112192>] fixup_exception+0xe/0x2c [<c0103eaa>] do_trap+0x62/0xa4 [<c0104177>] do_invalid_op+0x97/0xa1 [<c010360f>] error_code+0x4f/0x54 [<c034b031>] _spin_lock+0x10/0x68 [<c016bae5>] d_alloc+0x121/0x1a4 [<c01621d9>] real_lookup+0x9a/0xd4 [<c016240d>] do_lookup+0x6a/0x75 [<c0162573>] __link_path_walk+0x15b/0xdaf [<c0163213>] link_path_walk+0x4c/0xf2 [<c0163553>] path_lookup+0xa3/0x19c [<c01637a8>] __user_walk+0x28/0x3b [<c015e166>] vfs_lstat+0x17/0x3d [<c015e6d1>] sys_lstat64+0x14/0x28 [<c0102af9>] syscall_call+0x7/0xb Code: 21 e0 8b 40 14 39 d0 7c 18 81 fa fe 00 00 00 77 04 84 c0 74 16 b8 00 f0 ff ff 21 e0 29 50 14 5d c3 0f 0b 21 0a 3c b8 35 c0 eb de <0f> 0b 25 0a 3c b8 35 c0 eb e0 55 89 e5 8b 40 04 5d e9 eb e2 ff <0>Kernel panic - not syncing: Fatal exception in interrupt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/