[Qemu-devel] [PULL 0/1] seccomp branch queue

[Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

The following changes since commit c447afd5783b9237fa51b7a85777007d8d568bfc:

  Update version for v3.0.0-rc0 release (2018-07-10 18:19:50 +0100)

are available in the Git repository at:

  https://github.com/otubo/qemu.git tags/pull-seccomp-20180712

for you to fetch changes up to 056de1e894155fbb99e7b43c1c4382d4920cf437:

  seccomp: allow sched_setscheduler() with SCHED_IDLE policy (2018-07-12 14:52:39 +0200)

----------------------------------------------------------------
pull-seccomp-20180712

----------------------------------------------------------------
Marc-André Lureau (1):
      seccomp: allow sched_setscheduler() with SCHED_IDLE policy

 qemu-seccomp.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

-- 
2.17.1

[Qemu-devel] [PULL 1/1] seccomp: allow sched_setscheduler() with SCHED_IDLE policy

[Eduardo Otubo]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Current and upcoming mesa releases rely on a shader disk cash. It uses
a thread job queue with low priority, set with
sched_setscheduler(SCHED_IDLE). However, that syscall is rejected by
the "resourcecontrol" seccomp qemu filter.

Since it should be safe to allow lowering thread priority, let's allow
scheduling thread to idle policy.

Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1594456

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eduardo Otubo <otubo@redhat.com>
---
 qemu-seccomp.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/qemu-seccomp.c b/qemu-seccomp.c
index 148e4c6f24..9cd8eb9499 100644
--- a/qemu-seccomp.c
+++ b/qemu-seccomp.c
@@ -34,6 +34,12 @@
 struct QemuSeccompSyscall {
     int32_t num;
     uint8_t set;
+    uint8_t narg;
+    const struct scmp_arg_cmp *arg_cmp;
+};
+
+const struct scmp_arg_cmp sched_setscheduler_arg[] = {
+    SCMP_A1(SCMP_CMP_NE, SCHED_IDLE)
 };
 
 static const struct QemuSeccompSyscall blacklist[] = {
@@ -92,7 +98,8 @@ static const struct QemuSeccompSyscall blacklist[] = {
     { SCMP_SYS(setpriority),            QEMU_SECCOMP_SET_RESOURCECTL },
     { SCMP_SYS(sched_setparam),         QEMU_SECCOMP_SET_RESOURCECTL },
     { SCMP_SYS(sched_getparam),         QEMU_SECCOMP_SET_RESOURCECTL },
-    { SCMP_SYS(sched_setscheduler),     QEMU_SECCOMP_SET_RESOURCECTL },
+    { SCMP_SYS(sched_setscheduler),     QEMU_SECCOMP_SET_RESOURCECTL,
+      ARRAY_SIZE(sched_setscheduler_arg), sched_setscheduler_arg },
     { SCMP_SYS(sched_getscheduler),     QEMU_SECCOMP_SET_RESOURCECTL },
     { SCMP_SYS(sched_setaffinity),      QEMU_SECCOMP_SET_RESOURCECTL },
     { SCMP_SYS(sched_getaffinity),      QEMU_SECCOMP_SET_RESOURCECTL },
@@ -118,7 +125,8 @@ static int seccomp_start(uint32_t seccomp_opts)
             continue;
         }
 
-        rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, blacklist[i].num, 0);
+        rc = seccomp_rule_add_array(ctx, SCMP_ACT_KILL, blacklist[i].num,
+                                    blacklist[i].narg, blacklist[i].arg_cmp);
         if (rc < 0) {
             goto seccomp_return;
         }
-- 
2.17.1

Re: [Qemu-devel] [PULL 0/1] seccomp branch queue

[Peter Maydell]

On 12 July 2018 at 14:25, Eduardo Otubo <otubo@redhat.com> wrote:
> The following changes since commit c447afd5783b9237fa51b7a85777007d8d568bfc:
>
>   Update version for v3.0.0-rc0 release (2018-07-10 18:19:50 +0100)
>
> are available in the Git repository at:
>
>   https://github.com/otubo/qemu.git tags/pull-seccomp-20180712
>
> for you to fetch changes up to 056de1e894155fbb99e7b43c1c4382d4920cf437:
>
>   seccomp: allow sched_setscheduler() with SCHED_IDLE policy (2018-07-12 14:52:39 +0200)
>
> ----------------------------------------------------------------
> pull-seccomp-20180712
>
> ----------------------------------------------------------------
> Marc-André Lureau (1):
>       seccomp: allow sched_setscheduler() with SCHED_IDLE policy
>
>  qemu-seccomp.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)


Applied, thanks.

-- PMM

[Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

The following changes since commit 19b599f7664b2ebfd0f405fb79c14dd241557452:

  Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2018-08-27-v2' into staging (2018-08-27 16:44:20 +0100)

are available in the Git repository at:

  https://github.com/otubo/qemu.git tags/pull-seccomp-20180914

for you to fetch changes up to d3228ed3829981047138bbaff332026f9d64f337:

  seccomp: check TSYNC host capability (2018-09-14 15:01:55 +0200)

----------------------------------------------------------------
pull-seccomp-20180914

----------------------------------------------------------------
Marc-André Lureau (1):
      seccomp: check TSYNC host capability

 qemu-seccomp.c | 19 ++++++++++++++++++-
 vl.c           |  4 ++--
 2 files changed, 20 insertions(+), 3 deletions(-)

-- 
2.17.1

[Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:

  Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)

are available in the Git repository at:

  https://github.com/otubo/qemu.git tags/pull-seccomp-20190412

for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:

  configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)

----------------------------------------------------------------
pull-seccomp-20190412

----------------------------------------------------------------
Helge Deller (1):
      configure: Relax check for libseccomp

 configure | 28 ++++------------------------
 1 file changed, 4 insertions(+), 24 deletions(-)

-- 
2.17.2

[Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:

  Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)

are available in the Git repository at:

  https://github.com/otubo/qemu.git tags/pull-seccomp-20190412

for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:

  configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)

----------------------------------------------------------------
pull-seccomp-20190412

----------------------------------------------------------------
Helge Deller (1):
      configure: Relax check for libseccomp

 configure | 28 ++++------------------------
 1 file changed, 4 insertions(+), 24 deletions(-)

-- 
2.17.2

Re: [Qemu-devel] [PULL 0/1] seccomp branch queue

[Peter Maydell]

On Fri, 12 Apr 2019 at 12:37, Eduardo Otubo <otubo@redhat.com> wrote:
>
> The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:
>
>   Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)
>
> are available in the Git repository at:
>
>   https://github.com/otubo/qemu.git tags/pull-seccomp-20190412
>
> for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:
>
>   configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)
>
> ----------------------------------------------------------------
> pull-seccomp-20190412
>
> ----------------------------------------------------------------
> Helge Deller (1):
>       configure: Relax check for libseccomp

Is this really release critical? If you're sending pull
requests for rc3/rc4 it is extremely helpful if you can
give the justification for why they need to go into this
release. (As it happens we're going to need an rc4, but
I want to keep the set of changes in it to a minimum.)

thanks
-- PMM

Re: [Qemu-devel] [PULL 0/1] seccomp branch queue

[Peter Maydell]

On Fri, 12 Apr 2019 at 12:37, Eduardo Otubo <otubo@redhat.com> wrote:
>
> The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:
>
>   Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)
>
> are available in the Git repository at:
>
>   https://github.com/otubo/qemu.git tags/pull-seccomp-20190412
>
> for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:
>
>   configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)
>
> ----------------------------------------------------------------
> pull-seccomp-20190412
>
> ----------------------------------------------------------------
> Helge Deller (1):
>       configure: Relax check for libseccomp

Is this really release critical? If you're sending pull
requests for rc3/rc4 it is extremely helpful if you can
give the justification for why they need to go into this
release. (As it happens we're going to need an rc4, but
I want to keep the set of changes in it to a minimum.)

thanks
-- PMM

Re: [Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

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On 12/04/2019 - 12:52:48, Peter Maydell wrote:
> On Fri, 12 Apr 2019 at 12:37, Eduardo Otubo <otubo@redhat.com> wrote:
> >
> > The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:
> >
> >   Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)
> >
> > are available in the Git repository at:
> >
> >   https://github.com/otubo/qemu.git tags/pull-seccomp-20190412
> >
> > for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:
> >
> >   configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)
> >
> > ----------------------------------------------------------------
> > pull-seccomp-20190412
> >
> > ----------------------------------------------------------------
> > Helge Deller (1):
> >       configure: Relax check for libseccomp
> 
> Is this really release critical? If you're sending pull
> requests for rc3/rc4 it is extremely helpful if you can
> give the justification for why they need to go into this
> release. (As it happens we're going to need an rc4, but
> I want to keep the set of changes in it to a minimum.)
> 

This is not critical. I'll send again after the current release.

-- 
Eduardo Otubo

Red Hat GmbH,http://www.de.redhat.com/, Sitz: Grasbrunn,
Handelsregister: Amtsgericht München, HRB 153243,
Geschäftsführer: Charles Cachera, Michael O'Neill, Tom Savage, Eric Shander

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Re: [Qemu-devel] [PULL 0/1] seccomp branch queue

[Eduardo Otubo]

[-- Attachment #1: Type: text/plain, Size: 1403 bytes --]

On 12/04/2019 - 12:52:48, Peter Maydell wrote:
> On Fri, 12 Apr 2019 at 12:37, Eduardo Otubo <otubo@redhat.com> wrote:
> >
> > The following changes since commit 532cc6da74ec25b5ba6893b5757c977d54582949:
> >
> >   Update version for v4.0.0-rc3 release (2019-04-10 15:38:59 +0100)
> >
> > are available in the Git repository at:
> >
> >   https://github.com/otubo/qemu.git tags/pull-seccomp-20190412
> >
> > for you to fetch changes up to ee352b53b3e49ba9621149f9de7279a5cadd606c:
> >
> >   configure: Relax check for libseccomp (2019-04-12 13:30:40 +0200)
> >
> > ----------------------------------------------------------------
> > pull-seccomp-20190412
> >
> > ----------------------------------------------------------------
> > Helge Deller (1):
> >       configure: Relax check for libseccomp
> 
> Is this really release critical? If you're sending pull
> requests for rc3/rc4 it is extremely helpful if you can
> give the justification for why they need to go into this
> release. (As it happens we're going to need an rc4, but
> I want to keep the set of changes in it to a minimum.)
> 

This is not critical. I'll send again after the current release.

-- 
Eduardo Otubo

Red Hat GmbH,http://www.de.redhat.com/, Sitz: Grasbrunn,
Handelsregister: Amtsgericht München, HRB 153243,
Geschäftsführer: Charles Cachera, Michael O'Neill, Tom Savage, Eric Shander

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