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

[Thomas DEBESSE <thomas.debesse@xxxxxxxxxxxxxxxxxxxxxxxxx>]

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).

--

Thomas DEBESSE

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