On Mon, Sep 24, 2012 at 08:16:50PM +0200, Conny Seidel wrote: > Hi, > > On Mon, 24 Sep 2012 16:36:09 +0200 > Borislav Petkov <bp@xxxxxxxxx> wrote: > >[ … ] > > > >Conny, would you test pls? > > Sure thing. > Out of ~25 runs I only triggered it once, without the patch the > trigger-rate is higher. > > [ 55.098249] Broke affinity for irq 81 > [ 55.105108] smpboot: CPU 1 is now offline > [ 55.311216] smpboot: Booting Node 0 Processor 1 APIC 0x11 > [ 55.333022] LVT offset 0 assigned for vector 0x400 > [ 55.545877] smpboot: CPU 2 is now offline > [ 55.753050] smpboot: Booting Node 0 Processor 2 APIC 0x12 > [ 55.775582] LVT offset 0 assigned for vector 0x400 > [ 55.986747] smpboot: CPU 3 is now offline > [ 56.193839] smpboot: Booting Node 0 Processor 3 APIC 0x13 > [ 56.212643] LVT offset 0 assigned for vector 0x400 > [ 56.423201] Got negative events: -25 I see it: __percpu_counter_sum does for_each_online_cpu without doing get/put_online_cpus(). -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>