Re: [Xen-devel] DomU: kernel BUG at arch/x86/xen/enlighten.c:425

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 15/09/15 17:28, Thomas DEBESSE wrote:

2015-09-15 18:09 GMT+02:00 Andrew Cooper <andrew.cooper3@xxxxxxxxxx>:

The instantiation of HYPERVISOR_update_va_mapping() in set_aliased_prot() has always been buggy in pvops kernels.

This bug should be fixed by c/s 0b0e55 "x86/xen: Probe target addresses in set_aliased_prot before the hypercall" which is in the process of being backported to #stable as a prerequisite for the recent LDT CVE fixes.

~Andrew

OK thanks, I will stick with the 3.2 kernel for the moment, it seems to work with it.

I don't know why, but only one vm seems to be affected (and they all are built the same way).

It will depend on userspace running in the VM as to whether the bug gets tickled.

~Andrew

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel