Messages in this thread | | | From | Wanpeng Li <> | Date | Mon, 18 Dec 2017 20:09:39 +0800 | Subject | Re: [PATCH v4] KVM: Fix stack-out-of-bounds read in write_mmio |
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2017-12-18 19:55 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>: > On 15/12/2017 12:06, Marc Zyngier wrote: >> Assuming you address the above: >> >> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> >> Tested-by: Marc Zyngier <marc.zyngier@arm.com> > > Done as follows: > > diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h > index dfd21708694f..0a016bd14c2d 100644 > --- a/include/trace/events/kvm.h > +++ b/include/trace/events/kvm.h > @@ -227,7 +227,8 @@ > __entry->gpa = gpa; > __entry->val = 0; > if (val) > - memcpy(&__entry->val, val, min(8, len)); > + memcpy(&__entry->val, val, > + min_t(u32, sizeof(__entry->val), len)); > ), > > TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",
Thanks Paolo. :)
Regards, Wanpeng Li
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