[Qemu-stable] [PATCH 46/56] seccomp: add arch_prctl() to the syscall whitelist

[Michael Roth]

From: Paul Moore <address@hidden>

It appears that even a very simple /etc/qemu-ifup configuration can
require the arch_prctl() syscall, see the example below:

        #!/bin/sh
        /sbin/ifconfig $1 0.0.0.0 up
        /usr/sbin/brctl addif <switch> $1

Signed-off-by: Paul Moore <address@hidden>
Reviewed-by: Eduardo Otubo <address@hidden>
Message-id: address@hidden
Signed-off-by: Anthony Liguori <address@hidden>
(cherry picked from commit d2509b667caf482b6f827ff2645cbeb9b39ce29e)

Signed-off-by: Michael Roth <address@hidden>
---
 qemu-seccomp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/qemu-seccomp.c b/qemu-seccomp.c
index ca123bf..a7fb139 100644
--- a/qemu-seccomp.c
+++ b/qemu-seccomp.c
@@ -232,7 +232,8 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] 
= {
     { SCMP_SYS(prlimit64), 241 },
     { SCMP_SYS(waitid), 241 },
     { SCMP_SYS(io_setup), 241 },
-    { SCMP_SYS(io_destroy), 241 }
+    { SCMP_SYS(io_destroy), 241 },
+    { SCMP_SYS(arch_prctl), 240 }
 };
 
 int seccomp_start(void)
-- 
1.7.9.5