Re: [Qemu-devel] [PATCH] Whitelist sysinfo call

[Eduardo Otubo]

On Mon, Mar 07, 2016 at 10=34=46AM +0100, address@hidden wrote:
> From: Miroslav Rezanina <address@hidden>
> 
> Newer version of nss-softokn libraries (> 3.16.2.3) use sysinfo call
> so qemu using rbd image hang after start when run in sandbox mode.
> 
> To allow using rbd images in sandbox mode we have to whitelist it.
> 
> Signed-off-by: Miroslav Rezanina <address@hidden>
> ---
>  qemu-seccomp.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/qemu-seccomp.c b/qemu-seccomp.c
> index 2866e3c..e29fca1 100644
> --- a/qemu-seccomp.c
> +++ b/qemu-seccomp.c
> @@ -250,6 +250,7 @@ static const struct QemuSeccompSyscall 
> seccomp_whitelist[] = {
>  #ifdef HAVE_CACHEFLUSH
>      { SCMP_SYS(cacheflush), 240 },
>  #endif
> +    { SCMP_SYS(sysinfo), 240 },

Are you sure you want to add this syscall to the bottom of the list? Did
you estimate the frequency it is called by running strace?

Thanks for the patch.

-- 
Eduardo Otubo
ProfitBricks GmbH

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