Hi Jin, On Thu, Jul 02, 2015 at 12:24:34PM +0800, xiao jin wrote: > [ 106.107851] BUG: unable to handle kernel NULL pointer dereference at > 0000000000000040 > [ 106.116702] IP: > [ 106.118490] [<ffffffff810044f6>] > check_irq_vectors_for_cpu_disable+0x76/0x180
This might be the same issue I fixed with: d97eb8966c91 x86/irq: Check for valid irq descriptor in check_irq_vectors_for_cpu_disable() Can you try whether applying this patch on your kernel fixes your issue? Thanks, Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/