[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] x86: compat_show_guest_stack() should not truncate MFN
Re-using "addr" here was a mistake, as it is a 32-bit quantity. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> --- a/xen/arch/x86/x86_64/compat/traps.c +++ b/xen/arch/x86/x86_64/compat/traps.c @@ -20,11 +20,12 @@ void compat_show_guest_stack(struct vcpu if ( v != current ) { struct vcpu *vcpu; + unsigned long mfn; ASSERT(guest_kernel_mode(v, regs)); - addr = read_cr3() >> PAGE_SHIFT; + mfn = read_cr3() >> PAGE_SHIFT; for_each_vcpu( v->domain, vcpu ) - if ( pagetable_get_pfn(vcpu->arch.guest_table) == addr ) + if ( pagetable_get_pfn(vcpu->arch.guest_table) == mfn ) break; if ( !vcpu ) { Attachment:
x86-compat-show-guest-stack-mfn.patch _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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