From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39497) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W88IC-0001Zi-K9 for qemu-devel@nongnu.org; Tue, 28 Jan 2014 08:01:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W88I4-0005Hg-J9 for qemu-devel@nongnu.org; Tue, 28 Jan 2014 08:01:28 -0500 Received: from e24smtp04.br.ibm.com ([32.104.18.25]:55874) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W88I3-0005HC-Sl for qemu-devel@nongnu.org; Tue, 28 Jan 2014 08:01:20 -0500 Received: from /spool/local by e24smtp04.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 28 Jan 2014 11:01:15 -0200 Received: from d24relay01.br.ibm.com (d24relay01.br.ibm.com [9.8.31.16]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 69ED13520065 for ; Tue, 28 Jan 2014 08:01:10 -0500 (EST) Received: from d24av02.br.ibm.com (d24av02.br.ibm.com [9.8.31.93]) by d24relay01.br.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s0SD1IHp4845766 for ; Tue, 28 Jan 2014 11:01:19 -0200 Received: from d24av02.br.ibm.com (localhost [127.0.0.1]) by d24av02.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s0SD1BVt030231 for ; Tue, 28 Jan 2014 11:01:11 -0200 Message-ID: <52E7AA08.5040909@linux.vnet.ibm.com> Date: Tue, 28 Jan 2014 11:00:56 -0200 From: Eduardo Otubo MIME-Version: 1.0 References: <52E4FDC4.3050204@fobos.de> In-Reply-To: <52E4FDC4.3050204@fobos.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH] seccomp: add timerfd_create and timerfd_settime to the whitelist List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Felix Geyer Cc: qemu-devel@nongnu.org On 01/26/2014 10:21 AM, Felix Geyer wrote: > libusb calls timerfd_create() and timerfd_settime() when it's built with > timerfd support. > > Command to reproduce: > > qemu -sandbox on -monitor stdio -device piix3-usb-uhci,id=usb > -device usb-host,hostbus=1,hostaddr=3,id=hostdev0 > > Log messages: > > audit(1390730418.924:135): auid=4294967295 uid=121 gid=103 ses=4294967295 > pid=5232 comm="qemu-system-x86" sig=31 syscall=283 > compat=0 ip=0x7f2b0f4e96a7 code=0x0 > audit(1390733100.580:142): auid=4294967295 uid=121 gid=103 ses=4294967295 > pid=16909 comm="qemu-system-x86" sig=31 syscall=286 > compat=0 ip=0x7f03513a06da code=0x0 > > Signed-off-by: Felix Geyer > --- > qemu-seccomp.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/qemu-seccomp.c b/qemu-seccomp.c > index caa926e..2705468 100644 > --- a/qemu-seccomp.c > +++ b/qemu-seccomp.c > @@ -225,7 +225,9 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = { > { SCMP_SYS(fchmod), 240 }, > { SCMP_SYS(shmget), 240 }, > { SCMP_SYS(shmat), 240 }, > - { SCMP_SYS(shmdt), 240 } > + { SCMP_SYS(shmdt), 240 }, > + { SCMP_SYS(timerfd_create), 240 }, > + { SCMP_SYS(timerfd_settime), 240 } Did you deliberately set the priority to 240? Or did you run any sort of benchmark (strace) to find this value? Regards, -- Eduardo Otubo IBM Linux Technology Center