From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 109695] qemu using spice gl and sandbox resourcecontrol=deny crashes with SIGSYS on radeonsi Date: Thu, 28 Feb 2019 00:15:48 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1504139196==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 925D96E142 for ; Thu, 28 Feb 2019 00:15:48 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1504139196== Content-Type: multipart/alternative; boundary="15513129482.45DeF904.19680" Content-Transfer-Encoding: 7bit --15513129482.45DeF904.19680 Date: Thu, 28 Feb 2019 00:15:48 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D109695 --- Comment #7 from Marek Ol=C5=A1=C3=A1k --- (In reply to Daniel P. Berrange from comment #4) > I'm curious what motivated this change to start with ? Even if QEMU was = not > enforcing seccomp filters, I think I'd consider it a bug for mesa to be > setting its process affinity in this way. The mgmt application or sysadm= in > has decided that the process must have a certain affinity, based on how > it/they want the host CPUs utilized. Why is mesa wanting to override this > administrative policy decision to restrict CPU usage ? The correct solution is to fix pthread_setaffinity such that it returns an error code instead of crashing. An even better solution would be to have a virtual thread affinity that only the application can see and change, which should be silently masked by administrative policies not visible to the application. --=20 You are receiving this mail because: You are the assignee for the bug.= --15513129482.45DeF904.19680 Date: Thu, 28 Feb 2019 00:15:48 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Commen= t # 7 on bug 10969= 5 from Marek Ol=C5=A1=C3=A1k 
(In reply to Daniel P. Berrange from comment #4)
> I'm curious what motivated this change to start =
with ?  Even if QEMU was not
> enforcing seccomp filters, I think I'd consider it a bug for mesa to be
> setting its process affinity in this way.  The mgmt application or sys=
admin
> has decided that the process must have a certain affinity, based on how
> it/they want the host CPUs utilized. Why is mesa wanting to override t=
his
> administrative policy decision to restrict CPU usage ?

The correct solution is to fix pthread_setaffinity such that it returns an
error code instead of crashing.

An even better solution would be to have a virtual thread affinity that only
the application can see and change, which should be silently masked by
administrative policies not visible to the application.

You are receiving this mail because:
  • You are the assignee for the bug.
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