> -----Original Message----- > From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: 16 February 2017 09:21 > To: Paul Durrant <paul.durr...@citrix.com> > Cc: xen-devel <xen-de...@lists.xenproject.org> > Subject: backport of "x86/hvm: don't rely on shared ioreq state for > completion handling" ? > > Paul, > > as it looks to be quite non-trivial an operation, did you happen to > have to backport commit 480b83162a to 4.4 or older, without > backporting all the ioreq server stuff at the same time? It looks to > me as if the issue predates the addition of ioreq servers, and us > having had customer reports here would seem to make this a > candidate fix (perhaps with at least 125833f5f1 ["x86: fix > ioreq-server event channel vulnerability"] also backported, which > also appears to address a pre-existing issue). >
Hi Jan, Sorry, no I don't have a back-port. Agreed that the issue existed prior to ioreq servers but the checking was probably sufficiently lax that it never resulted in a domain_crash(), just bad data coming back from an emulation request. Paul > Thanks, Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
