All 3.4-rc kernels I have tried displayed this issue.
This report looks similar https://lkml.org/lkml/2015/9/26/165. I also have a Core 2 cpu on a Asus P5B (not deluxe) board. ... ACPI: Core revision 20150818 ACPI: 1 ACPI AML tables successfully acquired and loaded Mount-cache hash table entries: 8192 (order: 4, 65536 bytes) Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes) CPU: Physical Processor ID: 0 CPU: Processor Core ID: 0 mce: CPU supports 6 MCE banks CPU0: Thermal monitoring enabled (TM2) process: using mwait in idle threads Last level iTLB entries: 4KB 128, 2MB 4, 4MB 4 Last level dTLB entries: 4KB 256, 2MB 0, 4MB 32, 1GB 0 Freeing SMP alternatives memory: 20K (ffffffff819b5000 - ffffffff819ba000) ftrace: allocating 18583 entries in 73 pages ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 smpboot: CPU0: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz (fam: 06, model: 0f, stepping: 06) Performance Events: PEBS fmt0-, 4-deep LBR, Core2 events, Intel PMU driver. perf_event_intel: PEBS disabled due to CPU errata ... version: 2 ... bit width: 40 ... generic registers: 2 ... value mask: 000000ffffffffff ... max period: 000000007fffffff ... fixed-purpose events: 3 ... event mask: 0000000700000003 x86: Booting SMP configuration: .... node #0, CPUs: #1 smpboot: do_boot_cpu failed(-1) to wakeup CPU#1 x86: Booted up 1 node, 1 CPUs smpboot: Total of 1 processors activated (4272.42 BogoMIPS) devtmpfs: initialized I took a guess and got lucky. Reverting "x86/smpboot: Remove APIC.wait_for_init_deassert and atomic init_deasserted" resolved the issue. Regards, Shane -- 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/

