Re: [Xen-devel] question: is it a CVE in relinquish_memory()[xen/arch/x86/domain.c]

2016-11-09 Thread Jan Beulich
>>> On 09.11.16 at 13:01, wrote: > Based on CVE-2015-7814 and commit 1ef01396fdff, ' arm: handle races between > relinquish_memory and free_domheap_pages'.. > relinquish_memory() [xen/arch/arm/domain.c, arm code], > when couldn't get a reference -- someone is freeing this page and has already >

[Xen-devel] question: is it a CVE in relinquish_memory()[xen/arch/x86/domain.c]

2016-11-09 Thread Xuquan (Quan Xu)
Hi, Based on CVE-2015-7814 and commit 1ef01396fdff, ' arm: handle races between relinquish_memory and free_domheap_pages'.. relinquish_memory() [xen/arch/arm/domain.c, arm code], when couldn't get a reference -- someone is freeing this page and has already committed to doing so, so no more to do