From: Wei Liu <wei.liu2@citrix.com>
To: Doug Goldstein <cardoe@cardoe.com>
Cc: ross.lagerwall@citrix.com, Wei Liu <wei.liu2@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: XSM denials with 4.7.0 RC1
Date: Wed, 4 May 2016 15:05:38 +0100 [thread overview]
Message-ID: <20160504140538.GB27070@citrix.com> (raw)
In-Reply-To: <37c4c8fe-c803-dcd1-4934-0674628b2c45@cardoe.com>
CC Konrad and Ross
On Wed, May 04, 2016 at 08:52:24AM -0500, Doug Goldstein wrote:
> Hi all,
>
> Sometime after d4cd5a205973171475b8c63bc250c2803e0f51fa, I get the
> following denials for any domU that attempts to run "xl". In my
> situation my domU needs to run "xl devd" because its a driver domain.
>
> (XEN) avc: denied { xen_extraversion } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_extraversion } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_compile_info } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_capabilities } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_changeset } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_pagesize } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_commandline } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
> (XEN) avc: denied { xen_build_id } for domid=1
> scontext=system_u:system_r:domU_t tcontext=system_u:system_r:xen_t
> tclass=version
>
> I'm guessing a changed happened to xl so that it queries the version
> info everytime it is run.
>
I think the root cause is that we have now altered xen_version hypercall
for xsplice.
We might need to update the hook, the default policy (assuming that's
what you use) or both.
Wei.
> --
> Doug Goldstein
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
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next prev parent reply other threads:[~2016-05-04 14:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-04 13:52 XSM denials with 4.7.0 RC1 Doug Goldstein
2016-05-04 13:58 ` Jan Beulich
2016-05-04 14:00 ` Doug Goldstein
2016-05-04 14:05 ` Wei Liu [this message]
2016-05-04 15:33 ` Konrad Rzeszutek Wilk
2016-05-04 17:20 ` Daniel De Graaf
2016-05-04 19:35 ` Doug Goldstein
2016-05-04 19:39 ` Konrad Rzeszutek Wilk
2016-05-04 19:43 ` Doug Goldstein
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