Re: [PATCH] seccomp: fix killing of whole process instead of thread

[Stefan Hajnoczi]

On Fri, Sep 11, 2020 at 03:18:32PM +0100, Daniel P. Berrangé wrote:
> Back in 2018 we introduced support for killing the whole QEMU process
> instead of just one thread, when a seccomp rule is violated:
> 
>   commit bda08a5764d470f101fa38635d30b41179a313e1
>   Author: Marc-André Lureau <marcandre.lureau@redhat.com>
>   Date:   Wed Aug 22 19:02:48 2018 +0200
> 
>     seccomp: prefer SCMP_ACT_KILL_PROCESS if available
> 
> Fast forward a year and we introduced a patch to avoid killing the
> process for resource control syscalls tickled by Mesa.
> 
>   commit 9a1565a03b79d80b236bc7cc2dbce52a2ef3a1b8
>   Author: Daniel P. Berrangé <berrange@redhat.com>
>   Date:   Wed Mar 13 09:49:03 2019 +0000
> 
>     seccomp: don't kill process for resource control syscalls
> 
> Unfortunately a logic bug effectively reverted the first commit
> mentioned so that we go back to only killing the thread, not the whole
> process.
> 
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> ---
>  qemu-seccomp.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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