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Re: [Qemu-devel] seccomp missing calls in 2.7.0?


From: Brian Rak
Subject: Re: [Qemu-devel] seccomp missing calls in 2.7.0?
Date: Wed, 7 Sep 2016 15:55:49 -0400
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

--- src_clean/qemu-seccomp.c    2016-09-02 11:34:22.000000000 -0400
+++ src/qemu-seccomp.c    2016-09-06 11:28:23.189162653 -0400
@@ -65,6 +65,7 @@
     { SCMP_SYS(prctl), 245 },
     { SCMP_SYS(signalfd), 245 },
     { SCMP_SYS(getrlimit), 245 },
+    { SCMP_SYS(getrusage), 245 },
     { SCMP_SYS(set_tid_address), 245 },
     { SCMP_SYS(statfs), 245 },
     { SCMP_SYS(unlink), 245 },


On 9/6/2016 12:43 PM, Eduardo Otubo wrote:

This feature is enabled by default in virt-test/avocado and yes lots of people use it.

Please send a patch and I'll merge it.


On Tue, Sep 6, 2016, 18:41 Brian Rak <address@hidden <mailto:address@hidden>> wrote:

    I've been testing out 2.7.0 with seccomp support.  Whenever I
    connect to
    the VNC console, the process gets killed by the kernel.  dmesg shows:

    audit: type=1326 audit(1473175350.674:2): auid=0 uid=107 gid=107
    ses=423110 pid=32202 comm="qemu-kvm" exe="/bin/qemu-system-x86_64"
    sig=31 arch=c000003e syscall=98 compat=0 ip=0x7f2beba83477 code=0x0

    syscall 98 appears to be getrusage, which does not appear in
    qemu-seccomp.c.

    Is seccomp a supported feature these days?  I'm guessing it does
    not get
    a whole lot of use.





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